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  • Can't display image with Imageview on Android

    - by user1029167
    In my \drawable-mdpi folder, I have an image named: test.jpg In my main.xml file, in my LinearLayout section, I have: <ImageView android:id="@+id/test_image" android:src="@drawable/test" android:layout_width="wrap_content" android:layout_height="wrap_content" /> In my src folder, I have only 1 file, HelloAndroidActivity.java with only the following method: public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ImageView image = new ImageView(this); image = (ImageView) findViewById(R.id.test_image); setContentView(image); } This seems to be correct, yet whenever I try to run it, I get The application HelloAndroid (process xxxxx) has stopped unexpectedly. Please try again. The strange part is it previously did display the image, but now it won't and I don't know why. Also, when I comment out the ImageDisplay code, and replace it with TextDisplay code. i.e. TextView tv = new TextView(this); tv.setText("Does this work?"); setContentView(tv); It does display the text. Edit: was asked to post logcat. Link to pastebin.

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  • ListView exception for Images + Text

    - by drozzy
    I am trying to create a simple Icon+Text ListView but it does not work. I am using 2.1 Android SDK. My main class is very small slightly modified from the tutorial: public class Stuffs extends ListActivity { static final String[] COUNTRIES = new String[] {"A", "B","C"}; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, R.id.title, COUNTRIES)); } } and my list_item.xml file is this: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation = "horizontal"> <ImageView android:id = "@+id/icon" android:src="@drawable/icon" /> <TextView android:id = "@+id/title" android:padding="10dp" android:textSize="16sp" > </TextView> </LinearLayout> I have also created a "drawable" directory in my res directory and copied a "icon.png" into it. But any time I try to run this the application hangs up unexpected in my android emulator. Am I missing something?

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  • Followed the official android documentations but still could not use SQLite in app

    - by user366539
    My DBHelper class public class DBHelper extends SQLiteOpenHelper { public DBHelper(Context context) { super(context,"SIMPLE_DB",null,1); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL("CREATE TABLE SIMPLE_TABLE ( " + "ID INTEGER PRIMARY KEY " + "DESC TEXT);"); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { } } Activity class public class SimpleDatabase extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); DBHelper dbHelper = new DBHelper(this); SQLiteDatabase db = dbHelper.getReadableDatabase(); db.execSQL("INSERT INTO SIMPLE_TABLE VALUES (NULL, 'test');"); Cursor cursor = db.rawQuery("SELECT * FROM SIMPLE_TABLE", null); TextView text = (TextView)findViewById(R.id.textbox); text.setText(cursor.getString(0)); } } I figure it crashed (application has stopped unexpectedly!) at SQLiteDatabase db = ... because if I commented the code out from there to the end then it worked fine. But I have no idea whatsoever why it does that. Any help would be appreciated.

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  • getting page info from a webpage while sharing facebook style

    - by user556167
    Hi all. I am writing an app to share a page to friends when browsing. To this end, I can get the url of the page to my app and display it on the screen. Could anyone tell me, how to improve this, to show the headline of the page and the picture of a page as it appears when a page is being shared to friends on facebook. Here is the code to get and display the url of the page: Intent intent = getIntent(); String action = intent.getAction(); String type = intent.getType(); String mNewLinkUrl=""; if (action != null && type != null && Intent.ACTION_SEND.equals(action) && "text/plain".equals(type)){ mNewLinkUrl = intent.getStringExtra(Intent.EXTRA_TEXT); } TextView ptext = (TextView) findViewById(R.id.pagetext); ptext.append("\n"+mNewLinkUrl); Any insight will be appreciated. //update 1 found a method: use Jsoup to download the html as a Document. And use Elements and Element to get the data. For eg, the following is the code to get the links in imports in the html page: Elements imports = doc.select("link[href]"); for (Element link : imports) { Log.d(TAG,"link.tagName()"+link.tagName()+"link.attr(abs:href)"+link.attr("abs:href") +"link.attr(rel)"+link.attr("rel")); } But I am not able to figure out what attributes facebook exactly gets. Can anyone help me in this? Thank you.

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  • ListView and wrap_content

    - by gaiapac
    I want to create an activity with a ListView on the left and a TextView on the right, side by side. I write the following xml, but the ListView occupies the entire page and it don't worry about the wrap_content. Why? How can I resolve it? <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" > <ListView android:id="@+id/lv" android:layout_width="wrap_content" android:layout_height="match_parent" /> <TextView android:id="@+id/tv" android:layout_width="wrap_content" android:layout_height="match_parent" /> </LinearLayout> EDIT: my onCreate @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ListView lv = (ListView) findViewById(R.id.lv); String[] values = new String[] { "Test1", "Test2", "Test3", "Test4" }; ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.left, R.id.tv1, values); lv.setAdapter(adapter); }

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  • how to retrieve data from db and display it in list?

    - by raji
    In the below code I am passing catID to db.getNews(catID) super.onCreate(savedInstanceState); setContentView(R.layout.newslist); Bundle extras = getIntent().getExtras(); int catID = extras.getInt("cat_id"); mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); final ListView lv = (ListView) findViewById(R.id.category); lv.setAdapter(new ArrayAdapter<String>(this, R.layout.newslist, db.getNews(catID)){ public View getView(int position, View convertView, ViewGroup parent) { View row; if (null == convertView) { row = mInflater.inflate(R.layout.newslist, null); } else { row = convertView; } TextView tv = (TextView) row.findViewById(R.id.newslist_text); tv.setText(getItem(position)); return row; } }); the getnews(int catid) function is below: public NewsItemCursor getNews(int catID) { String sql = "SELECT title FROM news WHERE catid = " + catID + " ORDER BY id ASC"; SQLiteDatabase d = getReadableDatabase(); NewsItemCursor c = (NewsItemCursor) d.rawQueryWithFactory( new NewsItemCursor.Factory(), sql, null, null); c.moveToFirst(); d.close(); return c; } But I'm getting bug as array adapter undefined... Can anyone help me to resolve this, and retrieve data to make it display in list.

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  • My UITextView delegate method doesn't respond

    - by user611967
    Hi guys. I would like to start we that i'm not a very good english speaker, so excuse me if something is wrong. So I have this code header file : import @interface macViewController : UIViewController { UINavigationItem *navItem; UITextView *iTextView; } @property (nonatomic, retain) IBOutlet UINavigationItem *navItem; @property (nonatomic, retain) IBOutlet UITextView *iTextView; (IBAction) btnClicked; @end implementation file : import "macViewController.h" @implementation macViewController @synthesize navItem, iTextView; (IBAction) btnClicked { if (self.editing == YES) { self.editing = NO; [iTextView resignFirstResponder]; UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Data Saved" message:@"Your data was saved" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; } else { self.editing = YES; [iTextView becomeFirstResponder]; } NSLog(@"works"); self.navItem.rightBarButtonItem = self.editButtonItem; self.navItem.rightBarButtonItem.action = @selector(btnClicked); } (void) textViewDidChangeUITextView *)textView { NSLog(@"works"); } So like you guess it's a view based app wich when i tap Edit button the keyboard pops-up then i press Done button and keyboard disappear and appear a alert view. SO I WANTED TO MAKE THEN I TOUCH THE TEXTVIEW, EDIT BUTTON TO BECOME DONE BUTTON ... THE PROBLEM IS THAT THE METHOD I DELEGATE TO IT DOESN'T RESPOND ... (USING CONSOLE I SAW THAT NOTHING HAPPENS) ... I TRIED DIFFERENT CODE BUT ALL = 0 ... PLEASE HELP I'M NEW ...

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  • wifi provider onLocationChanged is never called

    - by Kelsie
    I got a weird problem. I uses wifi to retrieve user location. I have tested on several phones; on some of them, I could never get a location update. it seemed that the method onLocationChanged is never called. My code is attached below.. Any suggestions appreciated!!! @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); LocationManager locationManager; locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); String provider = locationManager.NETWORK_PROVIDER; Location l = locationManager.getLastKnownLocation(provider); updateWithNewLocation(l); locationManager.requestLocationUpdates(provider, 0, 0, locationListener); } private void updateWithNewLocation(Location location) { TextView myLocationText; myLocationText = (TextView)findViewById(R.id.myLocationText); String latLongString = "No location found"; if (location != null) { double lat = location.getLatitude(); double lng = location.getLongitude(); latLongString = "Lat:" + lat + "\nLong:" + lng; } myLocationText.setText("Your Current Position is:\n" + latLongString); } private final LocationListener locationListener = new LocationListener() { public void onLocationChanged(Location location) { updateWithNewLocation(location); Log.i("onLocationChanged", "onLocationChanged"); Toast.makeText(getApplicationContext(), "location changed", Toast.LENGTH_SHORT).show(); } public void onProviderDisabled(String provider) {} public void onProviderEnabled(String provider) {} public void onStatusChanged(String provider, int status, Bundle extras) {} }; Manifest <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.INTERNET"/>

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  • List View Array from Database

    - by leenolasco
    I have retrieved data and successfully shown it in text view. What do i modify in my codes to make it look like a list view? And also how do modify my listview programatically(adding size and padding)? Here is my a part of my DBclass in selecting the items that I've displayed getFAData() { // TODO Auto-generated method stub String [] columns = new String[]{Row_Name}; Cursor c = ourDB.query(db_Table, columns, null, null, null, null, null); String res = ""; int iRow = c.getColumnIndex(Row_Name); //int iDesc = c.getColumnIndex(Row_Desc); //int iID = c.getColumnIndex(Row_id); for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) { res = res + c.getString(iRow) + "\n"; } return res; } And here is class file: public class FirstAid extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.firstaid); displayresult(); } public void displayresult (){ TextView tvFa = (TextView) findViewById(R.id.tvFA); tvFa.setMovementMethod(new ScrollingMovementMethod()); DbHelper tblFa = new DbHelper(this); tblFa.open(); String result = tblFa.getFAData(); tblFa.close(); tvFa.setText(result); } }

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  • How to call a WCF service using ksoap2 on android?

    - by Qing
    Hi all, Here is my code import org.ksoap2.*; import org.ksoap2.serialization.*; import org.ksoap2.transport.*; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class ksop2test extends Activity { /** Called when the activity is first created. */ private static final String METHOD_NAME = "SayHello"; // private static final String METHOD_NAME = "HelloWorld"; private static final String NAMESPACE = "http://tempuri.org"; // private static final String NAMESPACE = "http://tempuri.org"; private static final String URL = "http://192.168.0.2:8080/HelloWCF/Service1.svc"; // private static final String URL = "http://192.168.0.2:8080/webservice1/Service1.asmx"; final String SOAP_ACTION = "http://tempuri.org/IService1/SayHello"; // final String SOAP_ACTION = "http://tempuri.org/HelloWorld"; TextView tv; StringBuilder sb; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); tv = new TextView(this); sb = new StringBuilder(); call(); tv.setText(sb.toString()); setContentView(tv); } public void call() { try { SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); request.addProperty("name", "Qing"); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope( SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); androidHttpTransport.call(SOAP_ACTION, envelope); sb.append(envelope.toString() + "\n");//cannot get the xml request send SoapPrimitive result = (SoapPrimitive)envelope.getResponse(); //to get the data String resultData = result.toString(); // 0 is the first object of data sb.append(resultData + "\n"); } catch (Exception e) { sb.append("Error:\n" + e.getMessage() + "\n"); } } } I can successfully access .asmx service, but when I try to call a wcf service the virtual machine said : Error: expected:END_TAG{http://schemas.xmlsoap.org/soap/envelope/}Body(position:END_TAG@1:712 in java.io.InputStreamReader@43ba6798 How to print what the request send? Here is the wcf wsdl: <wsdl:definitions name="Service1" targetNamespace="http://tempuri.org/"> - <wsdl:types> - <xsd:schema targetNamespace="http://tempuri.org/Imports"> <xsd:import schemaLocation="http://para-bj.para.local:8080/HelloWCF/Service1.svc?xsd=xsd0" namespace="http://tempuri.org/"/> <xsd:import schemaLocation="http://para-bj.para.local:8080/HelloWCF/Service1.svc?xsd=xsd1" namespace="http://schemas.microsoft.com/2003/10/Serialization/"/> </xsd:schema> </wsdl:types> - <wsdl:message name="IService1_SayHello_InputMessage"> <wsdl:part name="parameters" element="tns:SayHello"/> </wsdl:message> - <wsdl:message name="IService1_SayHello_OutputMessage"> <wsdl:part name="parameters" element="tns:SayHelloResponse"/> </wsdl:message> - <wsdl:portType name="IService1"> - <wsdl:operation name="SayHello"> <wsdl:input wsaw:Action="http://tempuri.org/IService1/SayHello" message="tns:IService1_SayHello_InputMessage"/> <wsdl:output wsaw:Action="http://tempuri.org/IService1/SayHelloResponse" message="tns:IService1_SayHello_OutputMessage"/> </wsdl:operation> </wsdl:portType> - <wsdl:binding name="BasicHttpBinding_IService1" type="tns:IService1"> <soap:binding transport="http://schemas.xmlsoap.org/soap/http"/> - <wsdl:operation name="SayHello"> <soap:operation soapAction="http://tempuri.org/IService1/SayHello" style="document"/> - <wsdl:input> <soap:body use="literal"/> </wsdl:input> - <wsdl:output> <soap:body use="literal"/> </wsdl:output> </wsdl:operation> </wsdl:binding> - <wsdl:service name="Service1"> - <wsdl:port name="BasicHttpBinding_IService1" binding="tns:BasicHttpBinding_IService1"> <soap:address location="http://para-bj.para.local:8080/HelloWCF/Service1.svc"/> </wsdl:port> </wsdl:service> </wsdl:definitions> It uses in tag and the asmx uses in tag what's the difference? Thanks. -Qing

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  • Android "java.lang.noclassdeffounderror" exception

    - by wpbnewbie
    Hello, I have a android webservice client application. I am trying to use the java standard WS library support. I have stripped the application down to the minimum, as shown below, to try and isolate the issue. Below is the applicaiton, package fau.edu.cse; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class ClassMap extends Activity { TextView displayObject; @Override public void onCreate(Bundle savedInstanceState) { // Build Screen Display String String screenString = "Program Started\n\n"; // Set up the display super.onCreate(savedInstanceState); setContentView(R.layout.main); displayObject = (TextView)findViewById(R.id.TextView01); screenString = screenString + "Inflate Disaplay\n\n"; try { // Set up Soap Service TempConvertSoap service = new TempConvert().getTempConvertSoap(); // Successful Soap Object Build screenString = screenString + "SOAP Object Correctly Build\n\n"; // Display Response displayObject.setText(screenString); } catch(Throwable e){ e.printStackTrace(); displayObject.setText(screenString +"Try Error...\n" + e.toString()); } } } The classes tempConvert and tempConvertSoap are in the package fau.edu.cse. I have included the java SE javax libraries in the java build pasth. When the android application tries to create the "service" object I get a "java.lang.noclassdeffounderror" exception. The two classes tempConvertSoap and TempConvet() are generated by wsimport. I am also using several libraries from javax.jws.. and javax.xml.ws.. Of course the application compiles without error and loads correctly. I know the application is running becouse my "try/catch" routine is successfully catching the error and printing it out. Here is what is in the logcat says (notice that it cannot find TempConvert), 06-12 22:58:39.340: WARN/dalvikvm(200): Unable to resolve superclass of Lfau/edu/cse/TempConvert; (53) 06-12 22:58:39.340: WARN/dalvikvm(200): Link of class 'Lfau/edu/cse/TempConvert;' failed 06-12 22:58:39.340: ERROR/dalvikvm(200): Could not find class 'fau.edu.cse.TempConvert', referenced from method fau.edu.cse.ClassMap.onCreate 06-12 22:58:39.340: WARN/dalvikvm(200): VFY: unable to resolve new-instance 21 (Lfau/edu/cse/TempConvert;) in Lfau/edu/cse/ClassMap; 06-12 22:58:39.340: DEBUG/dalvikvm(200): VFY: replacing opcode 0x22 at 0x0027 06-12 22:58:39.340: DEBUG/dalvikvm(200): Making a copy of Lfau/edu/cse/ClassMap;.onCreate code (252 bytes) 06-12 22:58:39.490: DEBUG/dalvikvm(30): GC freed 2 objects / 48 bytes in 273ms 06-12 22:58:39.530: DEBUG/ddm-heap(119): Got feature list request 06-12 22:58:39.620: WARN/Resources(200): Converting to string: TypedValue{t=0x12/d=0x0 a=2 r=0x7f050000} 06-12 22:58:39.620: WARN/System.err(200): java.lang.NoClassDefFoundError: fau.edu.cse.TempConvert 06-12 22:58:39.830: WARN/System.err(200): at fau.edu.cse.ClassMap.onCreate(ClassMap.java:26) 06-12 22:58:39.830: WARN/System.err(200): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 06-12 22:58:39.830: WARN/System.err(200): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459) 06-12 22:58:39.830: WARN/System.err(200): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512) 06-12 22:58:39.830: WARN/System.err(200): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 06-12 22:58:39.880: WARN/System.err(200): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 06-12 22:58:39.880: WARN/System.err(200): at android.os.Handler.dispatchMessage(Handler.java:99) 06-12 22:58:39.880: WARN/System.err(200): at android.os.Looper.loop(Looper.java:123) 06-12 22:58:39.880: WARN/System.err(200): at android.app.ActivityThread.main(ActivityThread.java:4363) 06-12 22:58:39.880: WARN/System.err(200): at java.lang.reflect.Method.invokeNative(Native Method) 06-12 22:58:39.880: WARN/System.err(200): at java.lang.reflect.Method.invoke(Method.java:521) 06-12 22:58:39.880: WARN/System.err(200): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 06-12 22:58:39.880: WARN/System.err(200): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 06-12 22:58:39.880: WARN/System.err(200): at dalvik.system.NativeStart.main(Native Method) ...bla...bla...bla It would be great if someone just had an answer, however I am looking at debug strategies. I have taken this same application and created a standard java client application and it works fine -- of course with all of the android stuff taken out. What would be a good debug strategy? What methods and techniques would you recommend I try and isolate the problem? I am thinking that there is some sort of Dalvik VM incompatibility that is causing the TempConvert class not to load. TempConvert is an interface class that references a lot of very tricky webservice attributes. Any help with debug strategies would be gladly appreciated. Thanks for the help, Steve

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  • Having trouble binding a ksoap object to an ArrayList in Android

    - by Maskau
    I'm working on an app that calls a web service, then the webservice returns an array list. My problem is I am having trouble getting the data into the ArrayList and then displaying in a ListView. Any ideas what I am doing wrong? I know for a fact the web service returns an ArrayList. Everything seems to be working fine, just no data in the ListView or the ArrayList.....Thanks in advance! EDIT: So I added more code to the catch block of run() and now it's returning "org.ksoap2.serialization.SoapObject".....no more no less....and I am even more confused now... package com.maskau; import java.util.ArrayList; import org.ksoap2.SoapEnvelope; import org.ksoap2.serialization.PropertyInfo; import org.ksoap2.serialization.SoapObject; import org.ksoap2.serialization.SoapSerializationEnvelope; import org.ksoap2.transport.AndroidHttpTransport; import android.app.*; import android.os.*; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import android.view.View; import android.view.View.OnClickListener; public class Home extends Activity implements Runnable{ /** Called when the activity is first created. */ public static final String SOAP_ACTION = "http://bb.mcrcog.com/GetArtist"; public static final String METHOD_NAME = "GetArtist"; public static final String NAMESPACE = "http://bb.mcrcog.com"; public static final String URL = "http://bb.mcrcog.com/karaoke/service.asmx"; String wt; public static ProgressDialog pd; TextView text1; ListView lv; static EditText myEditText; static Button but; private ArrayList<String> Artist_Result = new ArrayList<String>(); @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); myEditText = (EditText)findViewById(R.id.myEditText); text1 = (TextView)findViewById(R.id.text1); lv = (ListView)findViewById(R.id.lv); but = (Button)findViewById(R.id.but); but.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { wt = ("Searching for " + myEditText.getText().toString()); text1.setText(""); pd = ProgressDialog.show(Home.this, "Working...", wt , true, false); Thread thread = new Thread(Home.this); thread.start(); } } ); } public void run() { try { SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); PropertyInfo pi = new PropertyInfo(); pi.setName("ArtistQuery"); pi.setValue(Home.myEditText.getText().toString()); request.addProperty(pi); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); AndroidHttpTransport at = new AndroidHttpTransport(URL); at.call(SOAP_ACTION, envelope); java.util.Vector<Object> rs = (java.util.Vector<Object>)envelope.getResponse(); if (rs != null) { for (Object cs : rs) { Artist_Result.add(cs.toString()); } } } catch (Exception e) { // Added this line, throws "org.ksoap2.serialization.SoapObject" when run Artist_Result.add(e.getMessage()); } handler.sendEmptyMessage(0); } private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { ArrayAdapter<String> aa; aa = new ArrayAdapter<String>(Home.this, android.R.layout.simple_list_item_1, Artist_Result); lv.setAdapter(aa); try { if (Artist_Result.isEmpty()) { text1.setText("No Results"); } else { text1.setText("Complete"); myEditText.setText("Search Artist"); } } catch(Exception e) { text1.setText(e.getMessage()); } aa.notifyDataSetChanged(); pd.dismiss(); } }; }

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  • Why my button can trigger the UI to scroll and my TimerTask inside the activity can't?

    - by Spidey
    Long Story Short: a method of my activity updates and scrolls the ListView through an ArrayAdapter like it should, but a method of an internal TimerTask for polling messages (which are displayed in the ListView) updates the ListView, but don't scroll it. Why? Long Story: I have a chat activity with this layout: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#fff" > <ListView android:id="@+id/messageList" android:layout_width="fill_parent" android:layout_height="fill_parent" android:stackFromBottom="true" android:transcriptMode="alwaysScroll" android:layout_weight="1" android:fadeScrollbars="true" /> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center" > <EditText android:id="@+id/message" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" /> <Button android:id="@+id/button_send" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Send" android:onClick="sendMessage" /> </LinearLayout> </LinearLayout> The internal listView (with id messageList) is populated by an ArrayAdapter which inflates the XML below and replaces strings in it. <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" android:clickable="false" android:background="#fff" android:paddingLeft="2dp" android:paddingRight="2dp" > <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/date" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="16sp" android:textColor="#00F" android:typeface="monospace" android:text="2010-10-12 12:12:03" android:gravity="left" /> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/sender" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="16sp" android:textColor="#f84" android:text="spidey" android:gravity="right" android:textStyle="bold" /> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/body" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="14sp" android:padding="1dp" android:gravity="left" android:layout_below="@id/date" android:text="Mensagem muito legal 123 quatro cinco seis." android:textColor="#000" /> </RelativeLayout> The problem is: in the main layout, I have a EditText for the chat message, and a Button to send the message. I have declared the adapter in the activity scope: public class ChatManager extends Activity{ private EditText et; private ListView lv; private Timestamp lastDate = null; private long campaignId; private ChatAdapter ca; private List<ChatMessage> vetMsg = new ArrayList<ChatMessage>(); private Timer chatPollingTimer; private static final int CHAT_POLLING_PERIOD = 10000; ... } So, inside sendMessage(View v), the notifyDataSetChanged() scrolls the ListView acordingly, so I can see the latest chat messages automatically: public void sendMessage(View v) { String msg = et.getText().toString(); if(msg.length() == 0){ return; } et.setText(""); String xml = ServerCom.sendAndGetChatMessages(campaignId, lastDate, msg); Vector<ChatMessage> vetNew = Chat.parse(new InputSource(new StringReader(xml))); //Pegando a última data if(!vetNew.isEmpty()){ lastDate = vetNew.lastElement().getDateSent(); //Atualizando a tela vetMsg.addAll(vetNew); ca.notifyDataSetChanged(); } } But inside my TimerTask, I can't. The ListView IS UPDATED, but it just don't scroll automatically. What am I doing wrong? private class chatPollingTask extends TimerTask { @Override public void run() { String xml; if(lastDate != null){ //Chama o Updater xml = ServerCom.getChatMessages(campaignId, lastDate); }else{ //Chama o init denovo xml = ServerCom.getChatMessages(campaignId); } Vector<ChatMessage> vetNew = Chat.parse(new InputSource(new StringReader(xml))); if(!(vetNew.isEmpty())){ //TODO: descobrir porque o chat não está rolando quando chegam novas mensagens //Descobrir também como forçar o rolamento, enquanto o bug não for corrigido. Log.d("CHAT", "New message(s) acquired!"); lastDate = vetNew.lastElement().getDateSent(); vetMsg.addAll(vetNew); ca.notifyDataSetChanged(); } } } How can I force the scroll to the bottom? I've tried using scrollTo using lv.getBottom()-lv.getHeight(), but didn't work. Is this a bug in the Android SDK? Sorry for the MASSIVE amount of code, but I guess this way the question gets pretty clear.

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  • force close when assign onclick to button

    - by Lynnooi
    hi, i am very new in android development as well as in java. i had developed an application that gets an image url from a site and wanted to download it into the device and later on i would like to enable users to set it as wallpapers. however, i am met a problem when assigning onclick event to a button. Once i uncomment the line in red, it will pop up a box stating that the application was stopped unexpectedly. Can someone please help me with this? private ImageView imView = null; public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); try { /* Create a URL we want to load some xml-data from. */ URL url = new URL(xmlURL); /* Get a SAXParser from the SAXPArserFactory. */ SAXParserFactory spf = SAXParserFactory.newInstance(); SAXParser sp = spf.newSAXParser(); /* Get the XMLReader of the SAXParser we created. */ XMLReader xr = sp.getXMLReader(); /* Create a new ContentHandler and apply it to the XML-Reader */ ExampleHandler myExampleHandler = new ExampleHandler(); xr.setContentHandler(myExampleHandler); /* Parse the xml-data from our URL. */ xr.parse(new InputSource(url.openStream())); /* Parsing has finished. */ /* Our ExampleHandler now provides the parsed data to us. */ ParsedExampleDataSet parsedExampleDataSet = myExampleHandler .getParsedData(); /* Set the result to be displayed in our GUI. */ if (myExampleHandler.filenames != null) { a = a + "\n" + myExampleHandler.filenames + ", by " + myExampleHandler.authors + "\nhits: " + myExampleHandler.hits + " downloads"; this.ed = myExampleHandler.thumbs; this.imageURL = myExampleHandler.mediafiles; } } catch (Exception e) { a = e.getMessage(); } // get thumbnail Context context = this.getBaseContext(); if (ed.length() != 0) { Drawable image = ImageOperations(context, this.ed, "image.jpg"); ImageView imgView = new ImageView(context); imgView = (ImageView) findViewById(R.id.image1); imgView.setImageDrawable(image); } TextView tv = (TextView) findViewById(R.id.txt_name); tv.setText(a); Button bt3 = (Button) findViewById(R.id.get_imagebt); //bt3.setOnClickListener(getImageBtnOnClick); } OnClickListener getImageBtnOnClick = new OnClickListener() { public void onClick(View view) { downloadFile(imageURL); } }; void downloadFile(String fileUrl) { URL myFileUrl = null; try { myFileUrl = new URL(fileUrl); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } try { HttpURLConnection conn = (HttpURLConnection) myFileUrl .openConnection(); conn.setDoInput(true); conn.connect(); int length = conn.getContentLength(); InputStream is = conn.getInputStream(); bmImg = BitmapFactory.decodeStream(is); // this.imView.setImageBitmap(bmImg); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } private Drawable ImageOperations(Context ctx, String url, String saveFilename) { try { InputStream is = (InputStream) this.fetch(url); Drawable d = Drawable.createFromStream(is, "src"); return d; } catch (MalformedURLException e) { e.printStackTrace(); return null; } catch (IOException e) { e.printStackTrace(); return null; } } public Object fetch(String address) throws MalformedURLException, IOException { URL url = new URL(address); Object content = url.getContent(); return content; } Main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/viewgroup"> <ImageView android:id="@+id/image1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> <ImageView android:id="@+id/image2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> <TextView android:id="@+id/txt_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" /> <Button id="@+id/get_imagebt" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="xxx Get an image" android:layout_gravity="center" /> <ImageView id="@+id/imview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> </LinearLayout>

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  • How do I change variables from different classes?

    - by Dan T
    Before I delve into it, I'm very new to Android and I have just started learning Java last month. I've hit bumps while trying to develop my first simple app. Most of these hurdles were jumped thanks to random tutorials online. MY CODE IS VERY MESSY. Any tips are appreciated. The question above is quite broad, but this is what I want to do: It's a essentially a blood alcohol content calculator / drink keeper-tracker. Basic layout: http://i.imgur.com/JGuh7.jpg The buttons along the bottom are just regular buttons, not ImageButtons (had problems with that) Here's some example code of one: <Button android:id="@+id/Button01" android:layout_width="wrap_content" android:layout_marginRight="5dp" android:background="@drawable/addbeer"/> The buttons and TextView are all in main.xml. I have variables defined in a class called Global.java: package com.dantoth.drinkingbuddy; import android.app.Activity; public class Global extends Activity{ public static double StandardDrinks = 0; public static double BeerOunces = 12; public static double BeerPercentAlcohol = .05; public static double BeerDrink = BeerOunces * BeerPercentAlcohol; public static double BeerDrinkFinal = BeerDrink * 1.6666666; public static double ShotOunces = 1.5; public static double ShotPercentAlcohol = .4; public static double ShotDrink = ShotOunces * ShotPercentAlcohol; public static double ShotDrinkFinal = ShotDrink * 1.6666666; public static double WineOunces = 5; public static double WinePercentAlcohol = .12; public static double WineDrink = WineOunces * WinePercentAlcohol; public static double WineDrinkFinal = WineDrink * 1.6666666; public static double OtherOunces; public static double OtherPercentAlcohol; public static double OtherDrink = OtherOunces * (OtherPercentAlcohol * .01); public static double OtherDrinkFinal = OtherDrink * 1.6666666; public static double GenderConstant = 7.5; //9 for female public static double Weight = 180; public static double TimeDrinking = 60; public static double Hours = TimeDrinking / 60; public static double Bac = ((StandardDrinks / 2) * (GenderConstant / Weight)) - (0.017 * Hours); } The last variable is the important part. It calculates your BAC based on the factors involved. When I press the add beer button (Button01) I make it add 1 to StandardDrinks, simulating drinking one beer. The other variables in the Bac formula have values assigned to them in Global.java. The code that makes the beer button do stuff is in my regular class, drinkingbuddy.java: public class DrinkingBuddy extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button button = (Button) findViewById(R.id.Button01); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Global.StandardDrinks = Global.StandardDrinks + Global.BeerDrinkFinal; Toast.makeText(DrinkingBuddy.this, "Mmmm... Beer", Toast.LENGTH_SHORT).show(); } }); By my perception, StandardDrinks should now have a value of 1. However, when I click the Calculate BAC button (Button05) it merely outputs the variable Bac as if StandardDrinks was still set to 0. Here is the code for the Calculate BAC button (Button05): Button button4 = (Button) findViewById(R.id.Button05); button4.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { TextView texty; texty = (TextView) findViewById(R.id.texty1); texty.setText("Your BAC is " + Global.Bac ); } }); It outputs the following to the text view: "Your BAC is -0.017". This is the Bac value for if StandardDrinks was still 0, so obviously there is some problem communicating between the classes. Can anyone help me?? The other elements of the formula (weight, time spent drinking, and the alcohol %'s and such) are variables because I will ultimately allow the user to change those values in the settings. I've heard around the water cooler that global variables are not good programming style, but this is the closest I've come to getting it to work. Any other ways of doing it are very much welcomed!

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  • Custom View embed in Gallery crashes while key press

    - by tao
    Hi there, I'd like to find some stuff to replace the Tab component, so I'd make a custom View named StringView, which has the ability to display text, and to embed it into a Gallery. But it always crashes with error "NullPointerException at InputMethodManager". I have no idea about this, any help&tip&suggest are appreciate. Detail of my issue: First I'd created a class StringView extends View: public class StringView extends View { protected final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); protected String mString; protected int mAscent; // Constructor public StringView(Context context, String string) { super(context); mPaint.setARGB(255, 255, 60, 10); mPaint.setTextSize(30); //mPaint.setFakeBoldText(true); mString = string; setPadding(20,15,20,15); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); int w = this.getPaddingLeft(); int h = this.getPaddingTop() - mAscent; canvas.drawText(mString, w, h, mPaint); } public void setString(String str) { mString = str; this.requestLayout(); this.invalidate(); } public String getString() { return mString; } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { setMeasuredDimension(measureWidth(widthMeasureSpec), measureHeight(heightMeasureSpec)); } /** * Determines the width of this view * @param measureSpec A measureSpec packed into an int * @return The width of the view, honoring constraints from measureSpec */ private int measureWidth(int measureSpec) { int result = 0; int specMode = MeasureSpec.getMode(measureSpec); int specSize = MeasureSpec.getSize(measureSpec); if (specMode == MeasureSpec.EXACTLY) { // We were told how big to be result = specSize; } else { // Measure the text result = (int) mPaint.measureText(mString) + getPaddingLeft() + getPaddingRight(); if (specMode == MeasureSpec.AT_MOST) { // Respect AT_MOST value if that was what is called for by measureSpec result = Math.min(result, specSize); } } return result; } /** * Determines the height of this view * @param measureSpec A measureSpec packed into an int * @return The height of the view, honoring constraints from measureSpec */ private int measureHeight(int measureSpec) { int result = 0; int specMode = MeasureSpec.getMode(measureSpec); int specSize = MeasureSpec.getSize(measureSpec); mAscent = (int) mPaint.ascent(); if (specMode == MeasureSpec.EXACTLY) { // We were told how big to be result = specSize; } else { // Measure the text (beware: ascent is a negative number) result = (int) (-mAscent + mPaint.descent()) + getPaddingTop() + getPaddingBottom(); if (specMode == MeasureSpec.AT_MOST) { // Respect AT_MOST value if that was what is called for by measureSpec result = Math.min(result, specSize); } } return result; } } Second I put it in to Gallery through Adapter Gallery gallery = (Gallery) findViewById(R.id.gallery); gallery.setAdapter(new ImageAdapter(this)); ImageAdapter: public class ImageAdapter extends BaseAdapter { int mGalleryItemBackground; private Context mContext; private View[] mImages = genSerielImageViews(); public ImageAdapter(Context c) { mContext = c; TypedArray a = obtainStyledAttributes(R.styleable.Gallery); mGalleryItemBackground = a.getResourceId( R.styleable.Gallery_android_galleryItemBackground, 0); a.recycle(); } private View[] genSerielImageViews() { if (true) { int N = 6; StringView[] views = new StringView[N]; for (int i=0; i<N; i++) { views[i] = new StringView(mContext, "ITEM #" + Integer.toString(i) ); } return views; } else { int N = 6; TextView[] views = new TextView[N]; for (int i=0; i<N; i++) { views[i] = new TextView( mContext ); views[i].setText("CCTV #" + Integer.toString(i) ); } return views; } } public int getCount() { return mImages.length; } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { return mImages[position]; } } Then Compile&Run, press keypad RIGHT and I got a crash, It's turns out a weird InputMethodManager error: 03-18 07:22:33.568: ERROR/AndroidRuntime(958): Uncaught handler: thread main exiting due to uncaught exception 03-18 07:22:33.648: ERROR/AndroidRuntime(958): java.lang.NullPointerException 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at android.view.inputmethod.InputMethodManager.startInputInner(InputMethodManager.java:940) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at android.view.inputmethod.InputMethodManager.checkFocus(InputMethodManager.java:1114) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at android.view.ViewRoot.handleMessage(ViewRoot.java:1869) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at android.os.Handler.dispatchMessage(Handler.java:99) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at android.os.Looper.loop(Looper.java:123) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at android.app.ActivityThread.main(ActivityThread.java:4310) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at java.lang.reflect.Method.invokeNative(Native Method) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at java.lang.reflect.Method.invoke(Method.java:521) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 03-18 07:22:33.648: ERROR/AndroidRuntime(958): at dalvik.system.NativeStart.main(Native Method) Thanks.

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  • Why isn't my bundle getting passed?

    - by NickTFried
    I'm trying to pass a bundle of two values from a started class to my landnav app, but according to the debug nothing is getting passed, does anyone have any ideas why? package edu.elon.cs.mobile; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; public class PointEntry extends Activity{ private Button calc; private EditText longi; private EditText lati; private double longid; private double latd; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.pointentry); calc = (Button) findViewById(R.id.coorCalcButton); calc.setOnClickListener(landNavButtonListener); longi = (EditText) findViewById(R.id.longitudeedit); lati = (EditText) findViewById(R.id.latitudeedit); } private void startLandNav() { Intent intent = new Intent(this, LandNav.class); startActivityForResult(intent, 0); } private OnClickListener landNavButtonListener = new OnClickListener() { @Override public void onClick(View arg0) { Bundle bundle = new Bundle(); bundle.putDouble("longKey", longid); bundle.putDouble("latKey", latd); longid = Double.parseDouble(longi.getText().toString()); latd = Double.parseDouble(lati.getText().toString()); startLandNav(); } }; } This is the class that is suppose to take the second point package edu.elon.cs.mobile; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps.MapController; import com.google.android.maps.MapView; import com.google.android.maps.MyLocationOverlay; import com.google.android.maps.Overlay; import android.content.Context; import android.graphics.drawable.Drawable; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.location.Location; import android.location.LocationManager; import android.os.Bundle; import android.util.Log; import android.widget.EditText; import android.widget.TextView; public class LandNav extends MapActivity{ private MapView map; private MapController mc; private GeoPoint myPos; private SensorManager sensorMgr; private TextView azimuthView; private double longitudeFinal; private double latitudeFinal; double startTime; double newTime; double elapseTime; private MyLocationOverlay me; private Drawable marker; private GeoPoint finalPos; private SitesOverlay myOverlays; public LandNav(){ startTime = System.currentTimeMillis(); } public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.landnav); Bundle bundle = this.getIntent().getExtras(); if(bundle != null){ longitudeFinal = bundle.getDouble("longKey"); latitudeFinal = bundle.getDouble("latKey"); } azimuthView = (TextView) findViewById(R.id.azimuthView); map = (MapView) findViewById(R.id.map); mc = map.getController(); sensorMgr = (SensorManager) getSystemService(Context.SENSOR_SERVICE); LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); int longitude = (int)(location.getLongitude() * 1E6); int latitude = (int)(location.getLatitude() * 1E6); finalPos = new GeoPoint((int)(latitudeFinal*1E6), (int)(longitudeFinal*1E6)); myPos = new GeoPoint(latitude, longitude); map.setSatellite(true); map.setBuiltInZoomControls(true); mc.setZoom(16); mc.setCenter(myPos); marker = getResources().getDrawable(R.drawable.greenmarker); marker.setBounds(0,0, marker.getIntrinsicWidth(), marker.getIntrinsicHeight()); me = new MyLocationOverlay(this, map); myOverlays = new SitesOverlay(marker, myPos, finalPos); map.getOverlays().add(myOverlays); } @Override protected boolean isRouteDisplayed() { return false; } @Override protected void onResume() { super.onResume(); sensorMgr.registerListener(sensorListener, sensorMgr.getDefaultSensor(Sensor.TYPE_ORIENTATION), SensorManager.SENSOR_DELAY_UI); me.enableCompass(); me.enableMyLocation(); //me.onLocationChanged(location) } protected void onPause(){ super.onPause(); me.disableCompass(); me.disableMyLocation(); } @Override protected void onStop() { super.onStop(); sensorMgr.unregisterListener(sensorListener); } private SensorEventListener sensorListener = new SensorEventListener() { @Override public void onAccuracyChanged(Sensor arg0, int arg1) { // TODO Auto-generated method stub } private boolean reset = true; @Override public void onSensorChanged(SensorEvent event) { newTime = System.currentTimeMillis(); elapseTime = newTime - startTime; if (event.sensor.getType() == Sensor.TYPE_ORIENTATION && elapseTime > 400) { azimuthView.setText(Integer.toString((int) event.values[0])); startTime = newTime; } } }; }

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  • No view for id for fragment

    - by guillaume
    I'm trying to use le lib SlidingMenu in my app but i'm having some problems. I'm getting this error: 11-04 15:50:46.225: E/FragmentManager(21112): No view found for id 0x7f040009 (com.myapp:id/menu_frame) for fragment SampleListFragment{413805f0 #0 id=0x7f040009} BaseActivity.java package com.myapp; import android.support.v4.app.FragmentTransaction; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.view.Menu; import android.view.MenuItem; import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu; import com.jeremyfeinstein.slidingmenu.lib.app.SlidingFragmentActivity; public class BaseActivity extends SlidingFragmentActivity { private int mTitleRes; protected ListFragment mFrag; public BaseActivity(int titleRes) { mTitleRes = titleRes; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setTitle(mTitleRes); // set the Behind View setBehindContentView(R.layout.menu_frame); if (savedInstanceState == null) { FragmentTransaction t = this.getSupportFragmentManager().beginTransaction(); mFrag = new SampleListFragment(); t.replace(R.id.menu_frame, mFrag); t.commit(); } else { mFrag = (ListFragment) this.getSupportFragmentManager().findFragmentById(R.id.menu_frame); } // customize the SlidingMenu SlidingMenu slidingMenu = getSlidingMenu(); slidingMenu.setMode(SlidingMenu.LEFT); slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN); slidingMenu.setShadowWidthRes(R.dimen.slidingmenu_shadow_width); slidingMenu.setShadowDrawable(R.drawable.slidingmenu_shadow); slidingMenu.setBehindOffsetRes(R.dimen.slidingmenu_offset); slidingMenu.setFadeDegree(0.35f); slidingMenu.setMenu(R.layout.slidingmenu); getActionBar().setDisplayHomeAsUpEnabled(true); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: toggle(); return true; } return super.onOptionsItemSelected(item); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } } menu.xml <?xml version="1.0" encoding="utf-8"?> <fragment xmlns:android="http://schemas.android.com/apk/res/android" android:name="com.myapp.SampleListFragment" android:layout_width="match_parent" android:layout_height="match_parent" > </fragment> menu_frame.xml <?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/menu_frame" android:layout_width="match_parent" android:layout_height="match_parent" /> SampleListFragment.java package com.myapp; import android.content.Context; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.ImageView; import android.widget.TextView; public class SampleListFragment extends ListFragment { public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.list, null); } public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); SampleAdapter adapter = new SampleAdapter(getActivity()); for (int i = 0; i < 20; i++) { adapter.add(new SampleItem("Sample List", android.R.drawable.ic_menu_search)); } setListAdapter(adapter); } private class SampleItem { public String tag; public int iconRes; public SampleItem(String tag, int iconRes) { this.tag = tag; this.iconRes = iconRes; } } public class SampleAdapter extends ArrayAdapter<SampleItem> { public SampleAdapter(Context context) { super(context, 0); } public View getView(int position, View convertView, ViewGroup parent) { if (convertView == null) { convertView = LayoutInflater.from(getContext()).inflate(R.layout.row, null); } ImageView icon = (ImageView) convertView.findViewById(R.id.row_icon); icon.setImageResource(getItem(position).iconRes); TextView title = (TextView) convertView.findViewById(R.id.row_title); title.setText(getItem(position).tag); return convertView; } } } MainActivity.java package com.myapp; import java.util.ArrayList; import beans.Tweet; import database.DatabaseHelper; import adapters.TweetListViewAdapter; import android.os.Bundle; import android.widget.ListView; public class MainActivity extends BaseActivity { public MainActivity(){ super(R.string.app_name); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final ListView listview = (ListView) findViewById(R.id.listview_tweets); DatabaseHelper db = new DatabaseHelper(this); ArrayList<Tweet> tweets = db.getAllTweets(); TweetListViewAdapter adapter = new TweetListViewAdapter(this, R.layout.listview_item_row, tweets); listview.setAdapter(adapter); setSlidingActionBarEnabled(false); } } I don't understand why the view menu_frame is not found because I have a view with the id menu_frame and this view is a child of the layout menu_frame.

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  • How to get data from dynamically created EditText views and insert it into an array?

    - by Snwspeckle
    So basically what I need my program to do at this point is that when I click the submit button, I need to loop through each dynamic row of the ListView and grab the value in the EditText view and then insert that into an array which I will do further calculations after. Here is my code right now. package com.hello_world; import java.util.ArrayList; import com.hello_world.ByteInputActivity.MyAdapter.ViewHolder; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnFocusChangeListener; import android.view.View.OnKeyListener; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; public class ByteInputActivity extends Activity { private ListView myList; private MyAdapter myAdapter; private Integer resQuestions; private Integer indexVal = 0; private View caption; ViewHolder holder; ArrayList<Integer> intArrayList = new ArrayList<Integer>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fieldlist); //Gets number of questions from MainActivity Bundle extras = getIntent().getExtras(); if(extras !=null) { resQuestions = extras.getInt("index"); } myList = (ListView) findViewById(R.id.FieldList); myList.setItemsCanFocus(true); myAdapter = new MyAdapter(); myList.setAdapter(myAdapter); Button submit = (Button) findViewById(R.id.btn_New); submit.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { for (int i = 0; i < myList.getCount() ; i++) { View vListSortOrder; vListSortOrder = myList.getChildAt(i); String temp = holder.caption.getText().toString(); Log.e("VALUES", "" +temp); } } }); } public class MyAdapter extends BaseAdapter { private LayoutInflater mInflater; public ArrayList myItems = new ArrayList(); public MyAdapter() { mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); for (int i = 0; i < resQuestions; i++) { ListItem listItem = new ListItem(); listItem.caption = "Index " + i; listItem.indexText = "Index " + i; myItems.add(listItem); indexVal += 1; } notifyDataSetChanged(); } public int getCount() { return myItems.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { if (convertView == null) { holder = new ViewHolder(); convertView = mInflater.inflate(R.layout.item, null); holder.indexText = (TextView) convertView .findViewById(R.id.textView1); holder.caption = (EditText) convertView .findViewById(R.id.ItemCaption); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } //Fill EditText with the value you have in data source holder.caption.setText(""); holder.caption.setId(position); holder.indexText.setText("Index " + position); holder.indexText.setId(position); //we need to update adapter once we finish with editing holder.caption.setOnFocusChangeListener(new OnFocusChangeListener() { public void onFocusChange(View v, boolean hasFocus) { if (!hasFocus){ final int position = v.getId(); final EditText Caption = (EditText) v; myItems.set(position, Caption.getText().toString()); } } }); return convertView; } class ViewHolder { EditText caption; TextView indexText; } class ListItem { String caption; String indexText; } } }

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  • Android ListView delete row button - focus issue

    - by Max Gontar
    Hi! I have an activity with ListView and buttons below: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <ListView android:id="@+id/lvLamps" android:layout_width="fill_parent" android:layout_height="fill_parent" android:listSelector="@null" android:choiceMode="none" android:scrollbarStyle="insideInset" android:layout_weight="1.0" /> <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_weight="0.0"> <Button android:id="@+id/btnAdd" android:background="@null" android:drawableLeft="@drawable/btn_upgrade" android:layout_width="wrap_content" android:layout_height="wrap_content" android:drawableRight="@drawable/lbl_upgrade" android:textSize="0pt" android:text="" android:layout_alignParentLeft="true" android:padding="20px" /> <Button android:id="@+id/btnNext" android:background="@null" android:drawableRight="@drawable/next_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:drawableLeft="@drawable/lbl_next" android:textSize="0pt" android:text="" android:layout_alignParentRight="true" android:padding="20px" android:visibility="gone" /> <ImageButton android:id="@+id/btnListExit" android:background="@null" android:src="@drawable/btn_x" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:padding="20px" /> </RelativeLayout> </LinearLayout> ListView row contains delete button: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" android:focusable="true"> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" android:focusable="true"> <ImageButton android:id="@+id/btnRowDelete" android:src="@drawable/btn_x" android:background="@null" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:padding="4px" android:focusable="true" android:focusableInTouchMode="true"/> <TextView android:id="@+id/txtLampRowFrom" android:text="123" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="6pt" android:layout_toRightOf="@id/btnRowDelete" android:focusable="false" android:textColor="@color/textColor"/> <TextView android:id="@+id/txtLampRowTo" android:text="123" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="6pt" android:layout_toRightOf="@id/btnRowDelete" android:layout_alignParentBottom="true" android:focusable="false" android:textColor="@color/textColor"/> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/arrow_upgrade_to" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:focusable="false"/> </RelativeLayout> </LinearLayout> In Adapter, Button onClickListener is set, also there are dummies to make list non-selectable: // disabling list items select public boolean areAllItemsEnabled() { return false; } public boolean isEnabled(int position) { return false; } What I want is: always show buttons in the bottom of screen after list (no matter how long it is, there should be scroll if it's too long) ListView should not be selectable, I don't want row selection row delete button should be selectable (focusable) with touch and with trackball And everything works except I can't focus row delete button with trackball (although it's working with touch). Can you help me? Thanks!

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  • Android ViewFlipper + Gesture Detector

    - by Tim
    I am using gesture detector to catch "flings" and using a view flipper to change the screen when this happens. Some of my child views contain list views. The the gesture detector wont recognize a swipe if you swipe on the list view. But it will recognize it if it is onTop of TextView's or ImageView's. Is there a way to implement it so that it will recognize the swipes even if they are on top of another view that has a ClickListener?

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  • Change UITextView text color with animation.

    - by f0rz
    Hi ! Just a simple question. Is it possible to change the text color of UITextView with a animation? [UITextView beginAnimations:nil context:NULL]; [UITextView setAnimationDuration:2.0]; textView.textColor = [UIColor grayColor]; [UITextView commitAnimations]; Cheers! - Martin

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  • Specifying Android project dependencies (in Eclipse)

    - by Henrik Gustafsson
    I have two Android projects, a 'library project' containing a custom layout, and an 'application project' containing an application which uses the layout. Everything seems to build and execute fine, except that the visual layout editor throws a ClassNotFoundException (which I assume is a bug in the plug-in), but when I try to start to make use of the attributes I defined for the custom layout in the xml, I can no longer build. That is; this works: <?xml version="1.0" encoding="utf-8"?> <se.fnord.android.layout.PredicateLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="asdfasdf" /> </se.fnord.android.layout.PredicateLayout> Whereas this does not: <?xml version="1.0" encoding="utf-8"?> <se.fnord.android.layout.PredicateLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:fnord="http://schemas.android.com/apk/res/se.fnord.android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView fnord:layout_horizontalSpacing="1px" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="asdfasdf" /> </se.fnord.android.layout.PredicateLayout> The build fails with a message from aapt: ERROR No resource identifier found for attribute 'layout_horizontalSpacing' in package 'se.fnord.android' The resource identifier does exist in the R-file and attrs.xml contained the library project, and if I put the layout code and resources directly in the application project everything works fine. The layout_horizontalSpacing attribute (and layout_verticalSpacing) is a custom attribute used in the PredicateLayout.LayoutParam class to specify the distance to the next widget. So far I've tried the standard eclipse ways by specifying project references and build path project dependencies. I was also told to try the tag in the application manifest, which did not help. So, what do I need to do for the references in the xml-file to work? I don't know if it's relevant, but the 'library' manifest looks like this: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="se.fnord.android" android:versionCode="1" android:versionName="1.0.0"> </manifest> The 'application' manifest like this: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="se.fnord.appname" android:versionCode="1" android:versionName="1.0.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".AppName" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> (The 'PredicateLayout', btw, is a cleaned-up version of this).

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