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  • How computers display raw, low-level text and graphics

    - by panic
    My ever-growing interest in computers is making me ask deeper questions, that we don't seem to have to ask anymore. Our computers, at boot, as far as I understand it, are in text mode, in which a character can be displayed using the software interrupt 0x10 when AH=0x0e. We've all seen the famous booting font that always looks the same, regardless of what computer is booting. So, how on earth do computers output graphics at the lowest level, say, below the OS? And also, surely graphics aren't outputted a pixel at a time using software interrupts, as that sounds very slow? Is there a standard that defines basic outputting of vertices, polygons, fonts, etc. (below OpenGL for example, which OpenGL might use)? What makes me ask is why OS' can often be fine without official drivers installed; how do they do that? Apologies if my assumptions are incorrect. I would be very grateful for elaboration on these topics!

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  • Android Game Development in Java [on hold]

    - by Nusrat
    I have been searching for some good tutorials/frameworks for developing an Android Game . I want to develop a 3D Car Racing game . I have already looked into http://stackoverflow.com/questions/4227759/android-game-engine-for-2d-and-3d-games. Now , i know that Android Games can be developed using Java/Action Scripts/JS etc . Many of the users are suggesting me to use http://unity3d.com , but i found that it uses JavaScript, C#, Boo . I don't know JS too much , Is it possible to develop a very professional level Game for Android using my Java knowledge ? Any Software like Unity which allow me to code in Java ?

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  • External device/USB support in android API level 10 [migrated]

    - by chandan
    I am an android UI developer and having problem with issue with USB and external storage device support on android. What I want to have is on plug-in USB/SD card, the storage items in the devices directly show up on screen. For example the modern Operating systems have this feature that we plug in our device and it just automatically shows the contents of the device on new window. I am implementing my UI on android API level 10 and my device is IMX reference kit which has android 2.3.4 installed. I would be grateful if anyone could give specif suggestion or guideline. I already tried with external_storage.java class. but it only says that the APK is installed successfully. But no action launches on plug-in external device.

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  • Android JSon Array is not working with Maplocations class

    - by user1505962
    I am developing a map application in android i have made maplocation class to pass latitude and longitude and using Json Array to fetch data from MYSQl to display in map.But When I run application it crashed unfortunantely here is my log cat 07-07 14:02:26.423: E/AndroidRuntime(366): FATAL EXCEPTION: main 07-07 14:02:26.423: E/AndroidRuntime(366): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.icons.draw.view/com.icons.draw.view.DrawIcons}: android.view.InflateException: Binary XML file line #6: Error inflating class com.icons.draw.view.LocationViewers 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.os.Handler.dispatchMessage(Handler.java:99) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.os.Looper.loop(Looper.java:130) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.ActivityThread.main(ActivityThread.java:3683) 07-07 14:02:26.423: E/AndroidRuntime(366): at java.lang.reflect.Method.invokeNative(Native Method) 07-07 14:02:26.423: E/AndroidRuntime(366): at java.lang.reflect.Method.invoke(Method.java:507) 07-07 14:02:26.423: E/AndroidRuntime(366): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 07-07 14:02:26.423: E/AndroidRuntime(366): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 07-07 14:02:26.423: E/AndroidRuntime(366): at dalvik.system.NativeStart.main(Native Method) 07-07 14:02:26.423: E/AndroidRuntime(366): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class com.icons.draw.view.LocationViewers 07-07 14:02:26.423: E/AndroidRuntime(366): at android.view.LayoutInflater.createView(LayoutInflater.java:518) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.view.LayoutInflater.rInflate(LayoutInflater.java:623) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.view.LayoutInflater.inflate(LayoutInflater.java:408) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 07-07 14:02:26.423: E/AndroidRuntime(366): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.Activity.setContentView(Activity.java:1657) 07-07 14:02:26.423: E/AndroidRuntime(366): at com.icons.draw.view.DrawIcons.onCreate(DrawIcons.java:16) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 07-07 14:02:26.423: E/AndroidRuntime(366): ... 11 more 07-07 14:02:26.423: E/AndroidRuntime(366): Caused by: java.lang.reflect.InvocationTargetException 07-07 14:02:26.423: E/AndroidRuntime(366): at java.lang.reflect.Constructor.constructNative(Native Method) 07-07 14:02:26.423: E/AndroidRuntime(366): at java.lang.reflect.Constructor.newInstance(Constructor.java:415) 07-07 14:02:26.423: E/AndroidRuntime(366): at android.view.LayoutInflater.createView(LayoutInflater.java:505) 07-07 14:02:26.423: E/AndroidRuntime(366): ... 21 more 07-07 14:02:26.423: E/AndroidRuntime(366): Caused by: java.lang.NullPointerException 07-07 14:02:26.423: E/AndroidRuntime(366): at org.json.JSONTokener.nextCleanInternal(JSONTokener.java:112) 07-07 14:02:26.423: E/AndroidRuntime(366): at org.json.JSONTokener.nextValue(JSONTokener.java:90) 07-07 14:02:26.423: E/AndroidRuntime(366): at org.json.JSONArray.<init>(JSONArray.java:87) 07-07 14:02:26.423: E/AndroidRuntime(366): at org.json.JSONArray.<init>(JSONArray.java:103) 07-07 14:02:26.423: E/AndroidRuntime(366): at com.icons.draw.view.LocationViewers.getMapLocations(LocationViewers.java:102) 07-07 14:02:26.423: E/AndroidRuntime(366): at com.icons.draw.view.LocationViewers.init(LocationViewers.java:65) 07-07 14:02:26.423: E/AndroidRuntime(366): at com.icons.draw.view.LocationViewers.<init>(LocationViewers.java:45) 07-07 14:02:26.423: E/AndroidRuntime(366): ... 24 more And Here is My JSOn Array and loop code to make markers double LAT; double LANG; String INFO; public List<MapLocation> getMapLocations() { if (mapLocations == null) { try{ jArray = new JSONArray(result); JSONObject json_data=null; for(int i=0;i<jArray.length();i++){ json_data = jArray.getJSONObject(i); LAT=json_data.getDouble("lat"); LANG=json_data.getDouble("lang"); INFO=json_data.getString("info"); mapLocations = new ArrayList<MapLocation>(); mapLocations.add(new MapLocation(INFO,LAT,LANG)); } } catch(JSONException e1){ Toast.makeText(getContext(), "No Vehicles Found" ,Toast.LENGTH_LONG).show(); } catch (ParseException e1) { e1.printStackTrace(); } } return mapLocations; } Please Help to Remove this error

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  • Click in a ListView item changes status of elements inside the item?

    - by Antonio
    Hi, I don't know exactly how to explain this problem, but I'll try. I have a ListView with several items. Each item has inside a TextView and two ImageView. I want the ImageView change when I click on them, and I want to open a context menu when I press for a long time into the ListView item. For the ImageView, everything works properly. For the whole item, I can show the context menu after a long press, but my problem is that the ImageView changes as well when I am pressing the TextView, for example. Somo pieces of my code: ListView item: <TextView android:id="@+id/title" android:textColor="@color/black" android:maxLines="2" android:textSize="14dip" /> <ImageView android:id="@+id/minus" android:src="@drawable/minusbutton" android:adjustViewBounds="true" android:gravity="center" /> <ImageView android:id="@+id/plus" android:src="@drawable/plusbutton" android:adjustViewBounds="true" android:gravity="center" /> Drawable to change the status of the plus button: <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_enabled="false" android:drawable="@drawable/button_add_normal_disabled" /> <item android:state_enabled="true" android:state_pressed="true" android:drawable="@drawable/button_add_pressed" /> <item android:state_enabled="true" android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/button_add_active" /> <item android:state_enabled="true" android:state_focused="false" android:state_pressed="false" android:drawable="@drawable/button_add_normal" /> I hope you understand my problem. I think that all the children of a view are affected by an event in the parent, but I am not sure. Do you have a solution? Thanks in advance

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  • RelativeLayout differences between 1.5 and 2.1

    - by Kilnr
    I've got a ListView with items composed of RelativeLayouts. This is the relevant XML from the list items: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content"> <TextView android:id="@+id/xx" android:gravity="center_vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_centerInParent="true" android:layout_alignParentLeft="true"/> <TextView android:id="@+id/title" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_toRightOf="@id/xx" /> <TextView android:id="@+id/tag" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/xx" android:layout_below="@id/title" /> <TextView android:id="@+id/subtitle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/tag" android:layout_below="@id/title" /> </RelativeLayout> On Android 2.1 (tested on a Nexus One), this shows the desired behavior: On Android 1.5 however (tested on a HTC Hero), it shows up like this: [edit] On 1.6 (emulator), it works as expected as well. The small grey line on the top left is what shows up in the first pic as "xx", so that should be vertically centered. As far as I can see, the XML dictates this, but for some reason, 1.5 ignores it. Why is this? I can't find anything about this difference, and I've been brute forcing any combination of layout_center, center, alignParent*, but to no avail... Can anyone shed some light on this? Thanks!

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  • Android ListView with Custom List Selector causing Flickring problem

    - by y ramesh rao
    I'm setting a selector.xml to the ListView Selector : <item android:state_focused="false" android:state_selected="true" android:state_pressed="true" android:drawable="@drawable/timeline_selected_rect"/> <item android:state_focused="false" android:state_selected="true" android:state_pressed="false" android:drawable="@drawable/timeline_selected_rect"/> <item android:state_focused="true" android:state_selected="true" android:state_pressed="true" android:drawable="@drawable/timeline_selected_rect"/> but setting this is causing the TextView flickr over selection. this thing is not happening when the Default selector is used... whats wrong with this selector. I have even added android:cacheColorHint="#00000000" as provided info by some other blogs.

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  • Eclipse complains android:scrollbars and android:fadingEdge do not allow Strings - includes code.

    - by emanuel
    Having a problem in Eclipse with regards to an XML file. Eclipse complains that android:scrollbars and android:fadingEdge do not allow Strings. I checked the Android developer site and they do in fact accept strings in the xml file. A related question posed had the problem where there was a missing :android after xmlns. As you can see from the code the line beginning with xmlns is correct I believe. Here is the complete file contents: <?xml version="1.0" encoding="UTF-8"?> <com.example.todolist.TodoListItemView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dp" android:scrollbars="verticle" android:textColor="@color/notepad_text" android:fadingEdge="verticle" />

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  • Permission denial to read from emailprovider in android

    - by Ambika
    Hello Everyone, I've the problem when I want to read "com.android.email.provider" to get email accounts. Here is my code to retrieve the account : Cursor c = null; Uri CONTENT_URI = Uri.parse("content://com.android.email.provider/account"); String RECORD_ID = "_id"; String[] ID_PROJECTION = new String[] {RECORD_ID }; c = getContentResolver().query(CONTENT_URI,ID_PROJECTION,null, null, null); I get a security exception: java.lang.SecurityException: Permission Denial: reading com.android.email.provider.EmailProvider uri content://com.android.email.provider/account from pid=278, uid=10003 requires com.android.email.permission.ACCESS_PROVIDER I want to know the account is created or not in some other app. Is there any other way to resolve this so that I can read from the provider. I have also tried by adding the permission in manifest: That dint not help. Any solution would be greatly appreciated. Thanks in advance

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  • Problem with DWR and Android-Browser

    - by moxn
    Hello everyone, I am experiencing a problem with accessing an application from the Android-browser. The application uses DWR to persist connections to the clients that are connected with it. Everything works fine for me, except that if the application does not send any data to the client on the Android-phone for 2 minutes, the connection seems to be lost and no data arrive at the client. The same scenario works just fine on Firefox, Opera and Chrome. If the pause between two data transfers is less than 2 minutes, it works just fine. So, now my question: Is there some timeout setting for the android browser that I am missing? Or is this some built-in bug/feature/whatever that I cannot circumvent? I know that I could prevent this from happening with some sort of heartbeat, I would just like to why this is happening. Thanks in advance, Max btw: Everything (server, clients) runs on my machine and I am testing this on the android emulator with Windows XP Android emulator version 1.10 (build_id CUPCAKE-150240)

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  • How to define GPS module in Android?

    - by Osama Gamal
    I'm porting android to Devkit8000 which is a BeagleBoard clone. I have a GPS module connected on /dev/ttyS0. I could successfully get NMEA output when writing "cat /dev/ttyS0" in the terminal emulator. I want to know how to let android know that there is a GPS module on /dev/ttyS0 and it is outputting NMEA standard? To be able to use the android.location class with it! Is there something to edit in the android's source? adding driver for example, writing a code with android-ndk or what?

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  • Android: How to maintain backwards-compatibility?

    - by Peterdk
    According to the instructions found here, to make your app state which screen sizes you can support, you'll need to compile your app against Android 1.6. Using the minSdkVersion and targetSdkVersion this should run also on Android 1.5: <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="4"/> However, when I try to launch my app from Eclipse to run in a emulated 1.5, I get the following error: Failed to find an AVD compatible with target 'Android 1.6'. Is this an error of the eclipse tools/emulator? Or how do I get it to also target 1.5 correctly while giving me the option to specify the supported screens?

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  • building mono from svn - android target

    - by Jeremy Bell
    There were patches made to mono on trunk svn to support android. My understanding is that essentially instead of Koush's system which builds mono using the android NDK build system directly, these patches add support for the android NDK using the regular mono configure.sh process. I'd like to play around with this patch, but not being an expert in the mono build system, I have no idea how to tell it to target the android NDK, or even where to look. I've been able to build mono from SVN using the default target (linux) on Ubuntu, but no documentation on how to target android was given with the patches. Since anyone not submitting or reviewing a patch is generally ignored on the mono mailing list, I figured I'd post the question here.

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  • Android: Dynamically change Image in Listview

    - by Vivek
    Hi All, I have a listview defined by the following xml. I need to toggle the image in the list during runtime when the user clicks on any row. How can I achieve this? Any help is highly appreciated. Thanks //list_item.xml <?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"> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/play" android:id="@+id/img" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center_vertical" android:id="@+id/txt" /> </LinearLayout>

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  • Android 2.1 NullPointerException with TabWidgets

    - by ninjasense
    I have an issue I have not been able to figure out and it is only happening on devices running <2.1. It works fine on android 2.2. I have ansynchronous task that displays a loading dialog while it loads all the tabs. Here is the code for the TabActivity: public class OppTabsView extends TabActivity { Dialog dialog; String errorText; boolean save; final int OPP_SAVE = 0; public static boolean edited; public void onCreate(Bundle icicle) { try { super.onCreate(icicle); new DoInBackground().execute(); } catch (Exception e) { Toast.makeText(this, "Error occured. Please try again later.", Toast.LENGTH_SHORT).show(); } } @Override protected void onResume() { super.onResume(); } @Override protected void onStop() { super.onStop(); } @Override protected void onPause() { super.onPause(); } public boolean onCreateOptionsMenu(Menu menu) { menu.add(0, OPP_SAVE, 0, "Test"); return true; } public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case OPP_SAVE: save = true; new DoInBackground().execute(); return true; } return false; } public void LoadOpp() { handler.sendEmptyMessage(0); } public void SaveOpp() { DoStuff(); } public void LoadLayout() { setContentView(R.layout.view_opptabs); /* TabHost will have Tabs */ TabHost tabHost = (TabHost) findViewById(android.R.id.tabhost); /* * TabSpec used to create a new tab. By using TabSpec only we can able * to setContent to the tab. By using TabSpec setIndicator() we can set * name to tab. */ /* tid1 is firstTabSpec Id. Its used to access outside. */ TabSpec firstTabSpec = tabHost.newTabSpec("tid1"); TabSpec secondTabSpec = tabHost.newTabSpec("tid1"); TabSpec thirdTabSpec = tabHost.newTabSpec("tid1"); /* TabSpec setIndicator() is used to set name for the tab. */ /* TabSpec setContent() is used to set content for a particular tab. */ firstTabSpec.setIndicator("General", getResources().getDrawable(R.drawable.tab_moneybag)) .setContent(new Intent(this, OppTabGeneral.class)); secondTabSpec.setIndicator("Details", getResources().getDrawable(R.drawable.tab_papers)).setContent( new Intent(this, OppTabDetails.class)); thirdTabSpec.setIndicator("Contact", getResources().getDrawable(R.drawable.tab_contact)).setContent( new Intent(this, OppTabContact.class)); /* Add tabSpec to the TabHost to display. */ tabHost.addTab(firstTabSpec); tabHost.addTab(secondTabSpec); tabHost.addTab(thirdTabSpec); } private void do_update() { if (save) { SaveOpp(); } else { LoadOpp(); } } Handler handler = new Handler() { public void handleMessage(Message msg) { LoadLayout(); } }; private class DoInBackground extends AsyncTask<Void, Void, Void> implements DialogInterface.OnCancelListener { protected void onPreExecute() { String verb = "Connecting"; if (save) { verb = "Saving"; } dialog = ProgressDialog.show(OppTabsView.this, "", verb + ". Please Wait...", true, true, this); } protected Void doInBackground(Void... v) { do_update(); return null; } protected void onPostExecute(Void v) { dialog.dismiss(); } public void onCancel(DialogInterface dialog) { cancel(true); dialog.dismiss(); finish(); } } } Here is the stack trace from the error: java.lang.NullPointerException at android.widget.TabWidget.dispatchDraw(TabWidget.java:206) at android.view.ViewGroup.drawChild(ViewGroup.java:1529) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) at android.view.ViewGroup.drawChild(ViewGroup.java:1529) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) at android.view.ViewGroup.drawChild(ViewGroup.java:1529) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) at android.view.View.draw(View.java:6538) at android.widget.FrameLayout.draw(FrameLayout.java:352) at android.view.ViewGroup.drawChild(ViewGroup.java:1531) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) at android.view.ViewGroup.drawChild(ViewGroup.java:1529) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) at android.view.View.draw(View.java:6538) at android.widget.FrameLayout.draw(FrameLayout.java:352) at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1830) at android.view.ViewRoot.draw(ViewRoot.java:1349) at android.view.ViewRoot.performTraversals(ViewRoot.java:1114) at android.view.ViewRoot.handleMessage(ViewRoot.java:1633) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:4363) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) at dalvik.system.NativeStart.main(Native Method) I have tried stepping through it but the error seems to come out of no where, not at a specific line. Any help is greatly appreciated.

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  • How can I reference a drawable class in Android XML

    - by James Veenstra
    I've created a class that extends drawable that I'd like to reference inside a resource xml. I happen to need it in a selector, like so: <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_window_focused="false" android:state_pressed="false" android:drawable="com.sample.android.contacts.TopBarCollapsed" /> <item android:state_window_focused="true" android:state_pressed="true" android:drawable="@drawable/top_switcher_collapsed_selected" /> <item android:state_focused="true" android:drawable="@drawable/top_switcher_collapsed_focused" /> com.sample.android.contacts.TopBarCollapsed is the class that extends drawable.

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  • Android UnknownHost in asyncTask - loading web page

    - by Sneha
    I followed this tutorial for AsyncTask and getting the following error log: 03-23 11:44:42.936: WARN/System.err(315): java.net.UnknownHostException: www.google.co.in 03-23 11:44:42.936: WARN/System.err(315): at java.net.InetAddress.lookupHostByName(InetAddress.java:513) 03-23 11:44:42.936: WARN/System.err(315): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:278) 03-23 11:44:42.936: WARN/System.err(315): at java.net.InetAddress.getAllByName(InetAddress.java:242) 03-23 11:44:42.936: WARN/System.err(315): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136) 03-23 11:44:42.936: WARN/System.err(315): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) 03-23 11:44:42.936: WARN/System.err(315): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) 03-23 11:44:42.936: WARN/System.err(315): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348) 03-23 11:44:42.936: WARN/System.err(315): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) 03-23 11:44:42.936: WARN/System.err(315): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 03-23 11:44:42.944: WARN/System.err(315): at org.apache.http.impl.client.AbstractHttpC lient.execute(AbstractHttpClient.java:465) 03-23 11:44:42.944: WARN/System.err(315): at com.test.async.AsyncTaskExampleActivity$DownloadWebPageTask.doInBackground (AsyncTaskExampleActivity.java:36) 03-23 11:44:42.944: WARN/System.err(315): at com.test.async.AsyncTaskExampleActivity$DownloadWebPageTask.doInBackground (AsyncTaskExampleActivity.java:1) 03-23 11:44:42.944: WARN/System.err(315): at android.os.AsyncTask$2.call(AsyncTask.java:185) 03-23 11:44:42.944: WARN/System.err(315): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 03-23 11:44:42.944: WARN/System.err(315): at java.util.concurrent.FutureTask.run (FutureTask.java:137) 03-23 11:44:42.944: WARN/System.err(315): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068) 03-23 11:44:42.944: WARN/System.err(315): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561) 03-23 11:44:42.944: WARN/System.err(315): at java.lang.Thread.run(Thread.java:1096) How do i fix it?? My Code: public class AsyncTaskExampleActivity extends Activity { private TextView textView; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); textView = (TextView) findViewById(R.id.TextView01); } private class DownloadWebPageTask extends AsyncTask<String, Void, String> { @Override protected String doInBackground(String... urls) { String response = ""; Log.i("", "in doInBackgroundddddddddd.........."); Log.i("", "in readWebpageeeeeeeeeeeee"); /* * try { InetAddress i = * InetAddress.getByName("http://google.co.in"); } catch * (UnknownHostException e1) { e1.printStackTrace(); } */ for (String url : urls) { Log.i("", "in for looooooop doInBackgroundddddddddd.........."); DefaultHttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(url); try { Log .i("", "afetr for looooooop try doInBackgroundddddddddd.........."); HttpResponse execute = client.execute(httpGet); Log .i("", "afetr for looooooop try client ..execute doInBackgroundddddddddd.........."); InputStream content = execute.getEntity().getContent(); BufferedReader buffer = new BufferedReader( new InputStreamReader(content)); String s = ""; while ((s = buffer.readLine()) != null) { response += s; Log .i("", "afetr while looooooop try client ..execute doInBackgroundddddddddd.........."); } } catch (Exception e) { e.printStackTrace(); } } Log .i("", "afetr lasttttttttttttt b4 response doInBackgroundddddddddd.........."); return response; } @Override protected void onPostExecute(String result) { Log.i("", "in onPostExecuteeee.........."); textView.setText(result); } } public void readWebpage(View view) { /* * System.setProperty("http.proxyHost", "10.132.116.10"); * System.setProperty("http.proxyPort", "3128"); */ DownloadWebPageTask task = new DownloadWebPageTask(); task.execute(new String[] { "http://google.co.in" }); Log.i("", "in readWebpageeeeeeeeeeeee after execute.........."); } } main.xml: <Button android:id="@+id/readWebpage" android:layout_width="match_parent" android:layout_height="wrap_content" android:onClick="readWebpage" android:text="Load Webpage"> </Button> <TextView android:id="@+id/TextView01" android:layout_width="match_parent" android:layout_height="match_parent" android:text="Example Text"> </TextView> Manifest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.test.async" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="8" /> <uses-permission android:name="android.permission.INTERNET"></uses-permission> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".AsyncTaskExampleActivity" 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> Thanks Sneha

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  • Android: Alignment of four squares

    - by metter
    Hello There I am trying to align four equally sized squares on an Android Screen & I have now tried what feels like a million different approaches, yet none of them seem to work :(. What I've got at the moment is the following: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/MasterLayout" android:layout_width="wrap_content" android:layout_height="fill_parent" android:background="#FFFFFF" <TableRow android:layout_weight="1" android:background="#BBBBBB" android:padding="0dip"> <TableRow android:layout_weight="1" android:padding="0dip"> This basically does the job. However, every one of those four Images has a huge padding above and under it. How do I get rid of that? Or do I need to use a different Layout type alltogether? To help illustrate my problem, here's a picture. On the left is what I got, on the right is what I need. Image Thank you very much! Cheers, Markus!

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  • AutoCompleteTextView displays 'android.database.sqlite.SQLiteCursor@'... after making selection

    - by user244190
    I am using the following code to set the adapter (SimpleCursorAdapter) for an AutoCompleteTextView mComment = (AutoCompleteTextView) findViewById(R.id.comment); Cursor cComments = myAdapter.getDistinctComments(); scaComments = new SimpleCursorAdapter(this,R.layout.auto_complete_item,cComments,new String[] {DBAdapter.KEY_LOG_COMMENT},new int[]{R.id.text1}); mComment.setAdapter(scaComments); auto_complete_item.xml <?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/text1" android:layout_width="wrap_content" android:layout_height="wrap_content"/> and thi is the xml for the actual control <AutoCompleteTextView android:id="@+id/comment" android:hint="@string/COMMENT" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="18dp"/> The dropdown appears to work correctly, and shows a list of items. When I make a selection from the list I get a sqlite object ('android.database.sqlite.SQLiteCursor@'... ) in the textview. Anyone know what would cause this, or how to resolve this? thanks Ok I am able to hook into the OnItemClick event, but the TextView.setText() portion of the AutoCompleteTextView widget is updated after this point. The OnItemSelected() event never gets fired, and the onNothingSelected() event gets fired when the dropdown items are first displayed. mComment.setOnItemClickListener( new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub SimpleCursorAdapter sca = (SimpleCursorAdapter) arg0.getAdapter(); String str = getSpinnerSelectedValue(sca,arg2,"comment"); TextView txt = (TextView) arg1; txt.setText(str); Toast.makeText(ctx, "onItemClick", Toast.LENGTH_SHORT).show(); } }); mComment.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { Toast.makeText(ctx, "onItemSelected", Toast.LENGTH_SHORT).show(); } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub Toast.makeText(ctx, "onNothingSelected", Toast.LENGTH_SHORT).show(); } }); Anyone alse have any ideas on how to override the updating of the TextView? thanks patrick

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  • How to Get user input from a Text Entry Box in Android?

    - by NewGuy
    in an android website, I found an article about how to create a text entry widget that provides auto-complete suggestions. (Following is the link to the site; and it shows all the codes). http://developer.android.com/resources/tutorials/views/hello-autocomplete.html Can anyone please tell me how I can capture the input entered by the user? For example, if the user chooses “Canada”, is there a way I can know the result in the “HelloAutoComplete.java” activity? Any help would be greatly appreciated. public class HelloAutoComplete extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autocomplete_country); String[] countries = getResources().getStringArray(R.array.countries_array); ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item, countries); textView.setAdapter(adapter); textView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { if (adapterView.getItemAtPosition(i).toString().equals("Canada")) { Toast.makeText(getApplicationContext(), "Result Canada", Toast.LENGTH_SHORT).show(); } //Does not get an out put when I select Canada. } public void onNothingSelected(AdapterView<?> adapterView) { } }); } }

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  • Error in code of basic game using multiple sprites and surfaceView [on hold]

    - by Khagendra Nath Mahato
    I am a beginner to android and i was trying to make a basic game with the help of an online video tutorial. I am having problem with the multi-sprites and how to use with surfaceview.The application fails launching. Here is the code of the game.please help me. package com.example.killthemall; import java.util.ArrayList; import java.util.List; import java.util.Random; import android.app.Activity; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Rect; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.widget.Toast; public class Game extends Activity { KhogenView View1; @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); while(true){ try { OurThread.join(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); }} } Thread OurThread; int herorows = 4; int herocolumns = 3; int xpos, ypos; int xspeed; int yspeed; int herowidth; int widthnumber = 0; int heroheight; Rect src; Rect dst; int round; Bitmap bmp1; // private Bitmap bmp1;//change name public List<Sprite> sprites = new ArrayList<Sprite>() { }; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); View1 = new KhogenView(this); setContentView(View1); sprites.add(createSprite(R.drawable.image)); sprites.add(createSprite(R.drawable.bad1)); sprites.add(createSprite(R.drawable.bad2)); sprites.add(createSprite(R.drawable.bad3)); sprites.add(createSprite(R.drawable.bad4)); sprites.add(createSprite(R.drawable.bad5)); sprites.add(createSprite(R.drawable.bad6)); sprites.add(createSprite(R.drawable.good1)); sprites.add(createSprite(R.drawable.good2)); sprites.add(createSprite(R.drawable.good3)); sprites.add(createSprite(R.drawable.good4)); sprites.add(createSprite(R.drawable.good5)); sprites.add(createSprite(R.drawable.good6)); } private Sprite createSprite(int image) { // TODO Auto-generated method stub bmp1 = BitmapFactory.decodeResource(getResources(), image); return new Sprite(this, bmp1); } public class KhogenView extends SurfaceView implements Runnable { SurfaceHolder OurHolder; Canvas canvas = null; Random rnd = new Random(); { xpos = rnd.nextInt(canvas.getWidth() - herowidth)+herowidth; ypos = rnd.nextInt(canvas.getHeight() - heroheight)+heroheight; xspeed = rnd.nextInt(10 - 5) + 5; yspeed = rnd.nextInt(10 - 5) + 5; } public KhogenView(Context context) { super(context); // TODO Auto-generated constructor stub OurHolder = getHolder(); OurThread = new Thread(this); OurThread.start(); } @Override public void run() { // TODO Auto-generated method stub herowidth = bmp1.getWidth() / 3; heroheight = bmp1.getHeight() / 4; boolean isRunning = true; while (isRunning) { if (!OurHolder.getSurface().isValid()) continue; canvas = OurHolder.lockCanvas(); canvas.drawRGB(02, 02, 50); for (Sprite sprite : sprites) { if (widthnumber == 3) widthnumber = 0; update(); getdirection(); src = new Rect(widthnumber * herowidth, round * heroheight, (widthnumber + 1) * herowidth, (round + 1)* heroheight); dst = new Rect(xpos, ypos, xpos + herowidth, ypos+ heroheight); canvas.drawBitmap(bmp1, src, dst, null); } widthnumber++; OurHolder.unlockCanvasAndPost(canvas); } } public void update() { try { Thread.sleep(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } if (xpos + xspeed <= 0) xspeed = 40; if (xpos >= canvas.getWidth() - herowidth) xspeed = -50; if (ypos + yspeed <= 0) yspeed = 45; if (ypos >= canvas.getHeight() - heroheight) yspeed = -55; xpos = xpos + xspeed; ypos = ypos + yspeed; } public void getdirection() { double angleinteger = (Math.atan2(yspeed, xspeed)) / (Math.PI / 2); round = (int) (Math.round(angleinteger) + 2) % herorows; // Toast.makeText(this, String.valueOf(round), // Toast.LENGTH_LONG).show(); } } public class Sprite { Game game; private Bitmap bmp; public Sprite(Game game, Bitmap bmp) { // TODO Auto-generated constructor stub this.game = game; this.bmp = bmp; } } } Here is the LogCat if it helps.... 08-22 23:18:06.980: D/AndroidRuntime(28151): Shutting down VM 08-22 23:18:06.980: W/dalvikvm(28151): threadid=1: thread exiting with uncaught exception (group=0xb3f6f4f0) 08-22 23:18:06.980: D/AndroidRuntime(28151): procName from cmdline: com.example.killthemall 08-22 23:18:06.980: E/AndroidRuntime(28151): in writeCrashedAppName, pkgName :com.example.killthemall 08-22 23:18:06.980: D/AndroidRuntime(28151): file written successfully with content: com.example.killthemall StringBuffer : ;com.example.killthemall 08-22 23:18:06.990: I/Process(28151): Sending signal. PID: 28151 SIG: 9 08-22 23:18:06.990: E/AndroidRuntime(28151): FATAL EXCEPTION: main 08-22 23:18:06.990: E/AndroidRuntime(28151): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.killthemall/com.example.killthemall.Game}: java.lang.NullPointerException 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.os.Handler.dispatchMessage(Handler.java:99) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.os.Looper.loop(Looper.java:130) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.app.ActivityThread.main(ActivityThread.java:3683) 08-22 23:18:06.990: E/AndroidRuntime(28151): at java.lang.reflect.Method.invokeNative(Native Method) 08-22 23:18:06.990: E/AndroidRuntime(28151): at java.lang.reflect.Method.invoke(Method.java:507) 08-22 23:18:06.990: E/AndroidRuntime(28151): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:880) 08-22 23:18:06.990: E/AndroidRuntime(28151): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:638) 08-22 23:18:06.990: E/AndroidRuntime(28151): at dalvik.system.NativeStart.main(Native Method) 08-22 23:18:06.990: E/AndroidRuntime(28151): Caused by: java.lang.NullPointerException 08-22 23:18:06.990: E/AndroidRuntime(28151): at com.example.killthemall.Game$KhogenView.<init>(Game.java:96) 08-22 23:18:06.990: E/AndroidRuntime(28151): at com.example.killthemall.Game.onCreate(Game.java:58) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 08-22 23:18:06.990: E/AndroidRuntime(28151): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 08-22 23:18:06.990: E/AndroidRuntime(28151): ... 11 more 08-22 23:18:18.050: D/AndroidRuntime(28191): Shutting down VM 08-22 23:18:18.050: W/dalvikvm(28191): threadid=1: thread exiting with uncaught exception (group=0xb3f6f4f0) 08-22 23:18:18.050: I/Process(28191): Sending signal. PID: 28191 SIG: 9 08-22 23:18:18.050: D/AndroidRuntime(28191): procName from cmdline: com.example.killthemall 08-22 23:18:18.050: E/AndroidRuntime(28191): in writeCrashedAppName, pkgName :com.example.killthemall 08-22 23:18:18.050: D/AndroidRuntime(28191): file written successfully with content: com.example.killthemall StringBuffer : ;com.example.killthemall 08-22 23:18:18.050: E/AndroidRuntime(28191): FATAL EXCEPTION: main 08-22 23:18:18.050: E/AndroidRuntime(28191): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.killthemall/com.example.killthemall.Game}: java.lang.NullPointerException 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.os.Handler.dispatchMessage(Handler.java:99) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.os.Looper.loop(Looper.java:130) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.app.ActivityThread.main(ActivityThread.java:3683) 08-22 23:18:18.050: E/AndroidRuntime(28191): at java.lang.reflect.Method.invokeNative(Native Method) 08-22 23:18:18.050: E/AndroidRuntime(28191): at java.lang.reflect.Method.invoke(Method.java:507) 08-22 23:18:18.050: E/AndroidRuntime(28191): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:880) 08-22 23:18:18.050: E/AndroidRuntime(28191): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:638) 08-22 23:18:18.050: E/AndroidRuntime(28191): at dalvik.system.NativeStart.main(Native Method) 08-22 23:18:18.050: E/AndroidRuntime(28191): Caused by: java.lang.NullPointerException 08-22 23:18:18.050: E/AndroidRuntime(28191): at com.example.killthemall.Game$KhogenView.<init>(Game.java:96) 08-22 23:18:18.050: E/AndroidRuntime(28191): at com.example.killthemall.Game.onCreate(Game.java:58) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 08-22 23:18:18.050: E/AndroidRuntime(28191): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 08-22 23:18:18.050: E/AndroidRuntime(28191): ... 11 more

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  • Menu bars are a basic light gray after installing graphics card driver. [closed]

    - by Jonathan
    Possible Duplicate: Desktop forgets theme? Hi, I've just installed Ubuntu 10.10 64-bit. It came up saying I could install 2 proprietary drivers, one for my WiFi adapter (which works perfectly) and one for my graphics card - a Sapphire AIT Radeon HD 5770 1024MB GDDR5 PCI-Express Graphics Card. The driver is called ATI/AMD proprietary FGLRX graphics driver. Before installing this driver I was unable to have Extra Visual Effects in Appearances. However after installing (and restarting) the menu bars are now in a basic light gray mode, rather than the sleek Ubuntu black. - Although Extra Visual Effects does now work. I've tried rebooting, and I've had a look around in ATI "Catalyst Control Center" but nothing has worked so far. Does anybody know what this windows mode is, how to change it back to normal and why it's doing it in the first place? Below is a screenshot of my computer: (This is also the first time I've installed Ubuntu on my computer, and am keen for it to work.)

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  • How to get disable nVidia Graphics Card (which has recently expired) so that I can boot Desktop ?

    - by shan23
    I have a 3-4 years old laptop (Compaq V3000), which had Win Vista with Ubuntu 10.10 in dual boot configuration. The graphics card inside is an old Nvidia GeForce Go 7200. One fine day, my graphics card died (of old age, presumably) - resulting in myself being initially unable to boot to WinVista and Ubuntu 10.10. I solved the problem with WinVista (disabled Nvidia card after booting to Safe mode), but I don't know how to do the same with Ubuntu. I can only disable the 3rd-party driver after I boot to desktop, but since its crashing before that, I'm unable to do so. Can anyone help me disable the graphics card in Ubunutu ?

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  • How do I find a proprietary driver for the Intel graphics card I have?

    - by user69798
    I have an Intel corporation core processor integrated graphics controller (rev 18), and I am trying to get a proprietary driver for my graphics card so I can play Amnesia from the Humble Bundle. I am a female that can easily follow directions but doesn't know much about Linux yet. If you give me precise directions, I will follow them so you can help me fix the problem. I would really appreciate it! My laptop is a Dell n7010. Additional info: I believe that it is the graphics card that is causing Amnesia to crash, but I am unsure. I have tried running it on the lowest possible settings, and it crashes after the first loading screen. :( Also, I installed via the Ubuntu Software Center after purchasing the Humble Bundle. I have not tried the other games yet.

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