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• Problem with custom Dialog Android

  - by Nanis

  Hi, I have a custom Dialog on my app and I have a problem to do what I would like. I explain. My Dialog have had 4 Buttons. (Back, Valid, Modify and Restore) When user click on Modify or Valid I would like to call another activity. So I use Intent but it crash. The error Log : 05-19 13:29:21.495: ERROR/DEBUGTAG(974): java.lang.NullPointerException 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.content.ComponentName.(ComponentName.java:75) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.content.Intent.(Intent.java:2551) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.booztermobile.activity.HeaderMailDisplayActivity.onClick(HeaderMailDisplayActivity.java:571) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.View.performClick(View.java:2364) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.View.onTouchEvent(View.java:4179) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.widget.TextView.onTouchEvent(TextView.java:6540) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.View.dispatchTouchEvent(View.java:3709) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.app.Dialog.dispatchTouchEvent(Dialog.java:643) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.os.Handler.dispatchMessage(Handler.java:99) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.os.Looper.loop(Looper.java:123) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.app.ActivityThread.main(ActivityThread.java:4363) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at java.lang.reflect.Method.invokeNative(Native Method) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at java.lang.reflect.Method.invoke(Method.java:521) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at dalvik.system.NativeStart.main(Native Method) My custom Dialog : package com.android.booztermobile.services; import com.android.booztermobile.R; import android.app.Dialog; import android.content.Context; import android.os.Bundle; import android.util.Log; import android.widget.Button; public class MailDialog extends Dialog { private Button btnValid; private Button btnBack; private Button btnRestore; private Button btnModify; private Context context; public MailDialog(Context cont) { super(cont); context = cont; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.d("TestApp", "Dialog created"); setContentView(R.layout.dialog_classement); btnValid = (Button) findViewById(R.id.btnValidClassement); btnBack = (Button) findViewById(R.id.btnBackClassement); btnRestore = (Button) findViewById(R.id.btnRestoreClassement); btnModify = (Button) findViewById(R.id.btnModifyClassement); } } and the activity (cut because too long): //create dialog public void getMailInformations(View v, Context context){ currentMail = (MailHeader) v.getTag(); dial = new MailDialog(context); dial.setTitle("Classement"); dial.show(); btnValidClassement = (Button) dial.findViewById(R.id.btnValidClassement); btnValidClassement.setOnClickListener(this); } /** the Onclick : */ public void onClick(View view) { if(view == btnValidClassement){ try{ ClassementHandlerCall classement = new ClassementHandlerCall(); boolean mailClassify = classement.classifyMail(AuthentificationActivity.uidh, String.valueOf(currentMail.getSeqnum()), null, null); dial.dismiss(); if (mailClassify == true){ // create Intent Intent defineIntentDisplayPreviousMails = new Intent(HeaderMailDisplayActivity.this, ClassementActivity.class); } }catch(Exception e){ // TODO Auto-generated catch block Log.e("DEBUGTAG","Error occured", e); e.printStackTrace(); } } }

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• debugging android app to the phone

  - by tipu

  I've gone through this page: http://developer.android.com/guide/developing/device.html, My manifest has <application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true"> My phone has Menu - Settings - Applications - Development - USB Debugging checked I have gone to the control panel on my Windows XP 64 bit and installed the USB drivers given to me by the SDK installer at: android-sdk_r05-windows\android-sdk-windows\usb_driver So my computer does recognize the android device. However.. when I run an app on Eclipse, it still insists on opening it up in an emulator rather than my phone. How can I fix that?

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• Android: Programatically Add UI Elements to a View

  - by Shivan Raptor

  My view is written as follow: package com.mycompany; import android.view.View; import java.util.concurrent.TimeUnit; import java.util.ArrayList; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.util.AttributeSet; import android.graphics.Paint; import android.graphics.Point; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.widget.*; public class GameEngineView extends View implements SensorEventListener { GameLoop gameloop; String txt_acc; float accY; ArrayList<Point> bugPath; private SensorManager sensorManager; private class GameLoop extends Thread { private volatile boolean running = true; public void run() { while (running) { try { TimeUnit.MILLISECONDS.sleep(1); postInvalidate(); pause(); } catch (InterruptedException ex) { running = false; } } } public void pause() { running = false; } public void start() { running = true; run(); } public void safeStop() { running = false; interrupt(); } } public void unload() { gameloop.safeStop(); } public GameEngineView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub init(context); } public GameEngineView(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub init(context); } public GameEngineView(Context context) { super(context); // TODO Auto-generated constructor stub init(context); } private void init(Context context) { txt_acc = ""; // Adding SENSOR sensorManager=(SensorManager)context.getSystemService(Context.SENSOR_SERVICE); // add listener. The listener will be HelloAndroid (this) class sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL); // Adding UI Elements : How ? Button btn_camera = new Button(context); btn_camera.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT)); btn_camera.setClickable(true); btn_camera.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { System.out.println("clicked the camera."); } }); gameloop = new GameLoop(); gameloop.run(); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { // TODO Auto-generated method stub //super.onMeasure(widthMeasureSpec, heightMeasureSpec); System.out.println("Width " + widthMeasureSpec); setMeasuredDimension(widthMeasureSpec, heightMeasureSpec); } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub // super.onDraw(canvas); Paint p = new Paint(); p.setColor(Color.WHITE); p.setStyle(Paint.Style.FILL); p.setAntiAlias(true); p.setTextSize(30); canvas.drawText("|[ " + txt_acc + " ]|", 50, 500, p); gameloop.start(); } public void onAccuracyChanged(Sensor sensor,int accuracy){ } public void onSensorChanged(SensorEvent event){ if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){ //float x=event.values[0]; accY =event.values[1]; //float z=event.values[2]; txt_acc = "" + accY; } } } I would like to add a Button to the scene, but I don't know how to. Can anybody give me some lights? UPDATE: Here is my Activity : public class MyActivity extends Activity { private GameEngineView gameEngine; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // add Game Engine gameEngine = new GameEngineView(this); setContentView(gameEngine); gameEngine.requestFocus(); } }

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• Android: Custom ListAdapter extending BaseAdapter crashes on application launch.

  - by Danny

  Data being pulled from a local DB, then mapped using a cursor. Custom Adapter displays data similar to a ListView. As items are added/deleted from the DB, the adapter is supposed to refresh. The solution attempted below crashes the application at launch. Any suggestions? Thanks in advance, -D @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; ViewGroup p = parent; if (v == null) { LayoutInflater vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.items_row, p); } int size = mAdapter.getCount(); Log.d(TAG, "position " + position + " Size " + size); if(size != 0){ if(position < size) return mAdapter.getView(position, v, p); Log.d(TAG, "-position " + position + " Size " + size); } return null; } Errors: 03-23 00:14:10.392: ERROR/AndroidRuntime(718): java.lang.UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.AdapterView.addView(AdapterView.java:461) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.LayoutInflater.inflate(LayoutInflater.java:415) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at com.xyz.abc.CustomSeparatedListAdapter.getView(CustomSeparatedListAdapter.java:90) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.AbsListView.obtainView(AbsListView.java:1273) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.makeAndAddView(ListView.java:1658) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.fillDown(ListView.java:637) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.fillFromTop(ListView.java:694) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.ListView.layoutChildren(ListView.java:1516) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.AbsListView.onLayout(AbsListView.java:1112) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:998) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.LinearLayout.onLayout(LinearLayout.java:918) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.View.layout(View.java:6569) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.ViewRoot.performTraversals(ViewRoot.java:979) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.view.ViewRoot.handleMessage(ViewRoot.java:1613) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.os.Handler.dispatchMessage(Handler.java:99) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.os.Looper.loop(Looper.java:123) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at android.app.ActivityThread.main(ActivityThread.java:4203) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at java.lang.reflect.Method.invokeNative(Native Method) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at java.lang.reflect.Method.invoke(Method.java:521) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 03-23 00:14:10.392: ERROR/AndroidRuntime(718): at dalvik.system.NativeStart.main(Native Method)

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• Android: How/where to put gesture code into IME?

  - by CardinalFIB

  Hi, I'm new to Android but I'm trying to create an IME that allows for gesture-character recognition. I can already do simple apps that perform gesture recognition but am not sure where to hook in the gesture views/obj with an IME. Here is a starting skeleton of what I have for the IME so far. I would like to use android.gesture.Gesture/Prediction/GestureOverlayView/OnGesturePerformedListener. Does anyone have advice? -- CardinalFIB gestureIME.java public class gestureIME extends InputMethodService { private static Keyboard keyboard; private static KeyboardView kView; private int lastDisplayWidth; @Override public void onCreate() { super.onCreate(); } @Override public void onInitializeInterface() { int displayWidth; if (keyboard != null) { displayWidth = getMaxWidth(); if (displayWidth == lastDisplayWidth) return; else lastDisplayWidth = getMaxWidth(); } keyboard = new GestureKeyboard(this, R.xml.keyboard); } @Override public View onCreateInputView() { kView = (KeyboardView) getLayoutInflater().inflate(R.layout.input, null); kView.setOnKeyboardActionListener(kListener); kView.setKeyboard(keyboard); return kView; } @Override public View onCreateCandidatesView() { return null; } @Override public void onStartInputView(EditorInfo attribute, boolean restarting) { super.onStartInputView(attribute, restarting); kView.setKeyboard(keyboard); kView.closing(); //what does this do??? } @Override public void onStartInput(EditorInfo attribute, boolean restarting) { super.onStartInput(attribute, restarting); } @Override public void onFinishInput() { super.onFinishInput(); } public KeyboardView.OnKeyboardActionListener kListener = new KeyboardView.OnKeyboardActionListener() { @Override public void onKey(int keyCode, int[] otherKeyCodes) { if(keyCode==Keyboard.KEYCODE_CANCEL) handleClose(); if(keyCode==10) getCurrentInputConnection().commitText(String.valueOf((char) keyCode), 1); //keyCode RETURN } @Override public void onPress(int primaryCode) {} // TODO Auto-generated method stub @Override public void onRelease(int primaryCode) {} // TODO Auto-generated method stub @Override public void onText(CharSequence text) {} // TODO Auto-generated method stub @Override public void swipeDown() {} // TODO Auto-generated method stub @Override public void swipeLeft() {} // TODO Auto-generated method stub @Override public void swipeRight() {} // TODO Auto-generated method stub @Override public void swipeUp() {} // TODO Auto-generated method stub }; private void handleClose() { requestHideSelf(0); kView.closing(); } } GestureKeyboard.java package com.android.jt.gestureIME; import android.content.Context; import android.inputmethodservice.Keyboard; public class GestureKeyboard extends Keyboard { public GestureKeyboard(Context context, int xmlLayoutResId) { super(context, xmlLayoutResId); } } GesureKeyboardView.java package com.android.jt.gestureIME; import android.content.Context; import android.inputmethodservice.KeyboardView; import android.inputmethodservice.Keyboard.Key; import android.util.AttributeSet; public class GestureKeyboardView extends KeyboardView { public GestureKeyboardView(Context context, AttributeSet attrs) { super(context, attrs); } public GestureKeyboardView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override protected boolean onLongPress(Key key) { return super.onLongPress(key); } } keyboard.xml <?xml version="1.0" encoding="utf-8"?> <Keyboard xmlns:android="http://schemas.android.com/apk/res/android" android:keyWidth="10%p" android:horizontalGap="0px" android:verticalGap="0px" android:keyHeight="@dimen/key_height" > <Row android:rowEdgeFlags="bottom"> <Key android:codes="-3" android:keyLabel="Close" android:keyWidth="20%p" android:keyEdgeFlags="left"/> <Key android:codes="10" android:keyLabel="Return" android:keyWidth="20%p" android:keyEdgeFlags="right"/> </Row> </Keyboard> input.xml <?xml version="1.0" encoding="utf-8"?> <com.android.jt.gestureIME.GestureKeyboardView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/gkeyboard" android:layout_alignParentBottom="true" android:layout_width="fill_parent" android:layout_height="wrap_content" />

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• Adding View extending from SurfaceView to layout gives me a blank screen

  - by JonF

  I'm very new to Android programming, so this is probably something pretty basic. I just have an xml layout with a few buttons. I'm trying to follow the model given by the JetBoy demo, so I'm adding a view to the layout which extends SurfaceView. When this new view is put in my xml layout, I just get a blank screen. Here's the XML layout if it helps. The gameview element is what causes the screen to be blank <?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:alwaysDrawnWithCache="true"> <game.test.gameEngine android:id="@+id/gameView" android:layout_width="fill_parent" android:layout_height="fill_parent"/> <Button android:text="Easy" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/EasyButton"></Button> <Button android:text="Medium" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/MedButton"></Button> <Button android:text="Hard" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/HardButton"></Button> <DatePicker android:id="@+id/DatePicker01" android:layout_width="wrap_content" android:layout_height="wrap_content"></DatePicker><Button android:id="@+id/Button04" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Exit"></Button> </LinearLayout>

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• Where is android.os.SystemProperties

  - by Travis

  I'm looking at the Android Camera code and when I try importing android.os.SystemProperties It cannot be found. here is the file I'm looking at. http://android.git.kernel.org/?p=platform/packages/apps/Camera.git;a=blob;f=src/com/android/camera/VideoCamera.java;h=8effd3c7e2841eb1ccf0cfce52ca71085642d113;hb=refs/heads/eclair I created a new 2.1 project and tried importing this namespace again, but It still cannot be found. I checked developer.android.com and SystemProperties was not listed Did i miss something?

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• trying to override getView in a SimpleCursorAdapter gives NullPointerException

  - by Dimitry Hristov

  Would very much appreciate any help or hint on were to go next. I'm trying to change the content of a row in ListView programmatically. In one row there are 3 TextView and a ProgressBar. I want to animate the ProgressBar if the 'result' column of the current row is zero. After reading some tutorials and docs, I came to the conclusion that LayoutInflater has to be used and getView() - overriden. Maybe I am wrong on this. If I return row = inflater.inflate(R.layout.row, null); from the function, it gives NullPointerException. Here is the code: private final class mySimpleCursorAdapter extends SimpleCursorAdapter { private Cursor localCursor; private Context localContext; public mySimpleCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to) { super(context, layout, c, from, to); this.localCursor = c; this.localContext = context; } /** * 1. ListView asks adapter "give me a view" (getView) for each item of the list * 2. A new View is returned and displayed */ public View getView(int position, View convertView, ViewGroup parent) { View row = super.getView(position, convertView, parent); LayoutInflater inflater = (LayoutInflater)localContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); String result = localCursor.getString(2); int resInt = Integer.parseInt(result); Log.d(TAG, "row " + row); // if 'result' column form the TABLE is 0, do something useful: if(resInt == 0) { ProgressBar progress = (ProgressBar) row.findViewById(R.id.update_progress); progress.setIndeterminate(true); TextView edit1 = (TextView)row.findViewById(R.id.row_id); TextView edit2 = (TextView)row.findViewById(R.id.request); TextView edit3 = (TextView)row.findViewById(R.id.result); edit1.setText("1"); edit2.setText("2"); edit3.setText("3"); row = inflater.inflate(R.layout.row, null); } return row; } here is the Stack Trace: 03-08 03:15:29.639: ERROR/AndroidRuntime(619): java.lang.NullPointerException 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.SimpleCursorAdapter.bindView(SimpleCursorAdapter.java:149) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.CursorAdapter.getView(CursorAdapter.java:186) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at com.dhristov.test1.test1$mySimpleCursorAdapter.getView(test1.java:105) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.AbsListView.obtainView(AbsListView.java:1256) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.ListView.makeAndAddView(ListView.java:1668) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.ListView.fillDown(ListView.java:637) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.ListView.fillSpecific(ListView.java:1224) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.ListView.layoutChildren(ListView.java:1499) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.AbsListView.onLayout(AbsListView.java:1113) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.View.layout(View.java:6830) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:998) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.onLayout(LinearLayout.java:918) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.View.layout(View.java:6830) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:998) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.onLayout(LinearLayout.java:918) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.View.layout(View.java:6830) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.View.layout(View.java:6830) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:998) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.LinearLayout.onLayout(LinearLayout.java:918) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.View.layout(View.java:6830) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.widget.FrameLayout.onLayout(FrameLayout.java:333) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.View.layout(View.java:6830) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.ViewRoot.performTraversals(ViewRoot.java:996) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.view.ViewRoot.handleMessage(ViewRoot.java:1633) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.os.Handler.dispatchMessage(Handler.java:99) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.os.Looper.loop(Looper.java:123) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at android.app.ActivityThread.main(ActivityThread.java:4363) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at java.lang.reflect.Method.invokeNative(Native Method) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at java.lang.reflect.Method.invoke(Method.java:521) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 03-08 03:15:29.639: ERROR/AndroidRuntime(619): at dalvik.system.NativeStart.main(Native Method)

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• How can I get an Android TableLayout to fill the screen?

  - by Timmmm

  Hi, I'm battling with Android's retarded layout system. I'm trying to get a table to fill the screen (simple right?) but it's ridiculously hard. I got it to work somehow in XML like this: <?xml version="1.0" encoding="utf-8"?> <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="fill_parent" android:layout_width="fill_parent"> <TableRow android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_weight="1"> <Button android:text="A" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> <Button android:text="B" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> </TableRow> <TableRow android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_weight="1"> <Button android:text="C" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> <Button android:text="D" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> </TableRow> However I can not get it to work in Java. I've tried a million combinations of the LayoutParams, but nothing ever works. This is the best result I have which only fills the width of the screen, not the height: table = new TableLayout(this); // Java. You suck. TableLayout.LayoutParams lp = new TableLayout.LayoutParams( ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT); table.setLayoutParams(lp); // This line has no effect! WHYYYY?! table.setStretchAllColumns(true); for (int r = 0; r < 2; ++r) { TableRow row = new TableRow(this); for (int c = 0; c < 2; ++c) { Button btn = new Button(this); btn.setText("A"); row.addView(btn); } table.addView(row); } Obviously the Android documentation is no help. Anyone have any ideas?

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• A Tab Exception Message

  - by Kooper

  06-14 00:21:30.398: ERROR/AndroidRuntime(332): Caused by: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost' what it means? I've already given the id for tabhost.And I can see the id in R.java. Here is the .xml: TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent" LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="5dp" TabWidget android:id="@+id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" FrameLayout android:id="@+id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="5dp" LinearLayout TabHost

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• How to make Spinner Editable in Android?

  - by Dhrumil Shah

  I changed the ArrayAdapter method of spinner and i got my custom Spinner. just change the parameter of this method like Spinner spinner = (Spinner) findViewById(R.id.Spinner01); ArrayAdapter<CharSequence> adapter=ArrayAdapter.createFromResource(This,R.array.statename,R.layout.mylayout); spinner.setAdapter(adp); In Which the mylayout file contains <EditText android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/spinnerTarget" android:textColor="#FF8B1500" android:gravity="center" >

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• Why does keyboard-slide crash my app?

  - by Brad Hein

  If I physically slide out the keyboard on my Moto Droid A855, it crashes my test app with the stack trace pasted below. I don't understand why? Also, if I start my app with the keyboard out, my app crashes immediately on startup. The app consists of an activity, which contains a viewflipper as the main view layout. The viewflipper contains two linearlayouts... Stack trace: 06-10 21:10:17.652 E/AndroidRuntime( 3785): Uncaught handler: thread main exiting due to uncaught exception 06-10 21:10:17.668 E/AndroidRuntime( 3785): java.lang.IllegalArgumentException: Receiver not registered: android.widget.ViewFlipper$1@447af0b8 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.app.ActivityThread$PackageInfo.forgetReceiverDispatcher(ActivityThread.java:667) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.app.ApplicationContext.unregisterReceiver(ApplicationContext.java:747) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:321) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.widget.ViewFlipper.onDetachedFromWindow(ViewFlipper.java:104) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.View.dispatchDetachedFromWindow(View.java:5835) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1076) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1074) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1074) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1074) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.ViewRoot.dispatchDetachedFromWindow(ViewRoot.java:1570) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.ViewRoot.doDie(ViewRoot.java:2556) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.ViewRoot.die(ViewRoot.java:2526) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:218) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.view.Window$LocalWindowManager.removeViewImmediate(Window.java:436) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3498) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3599) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.app.ActivityThread.access$2300(ActivityThread.java:119) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1867) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.os.Handler.dispatchMessage(Handler.java:99) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.os.Looper.loop(Looper.java:123) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at android.app.ActivityThread.main(ActivityThread.java:4363) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at java.lang.reflect.Method.invokeNative(Native Method) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at java.lang.reflect.Method.invoke(Method.java:521) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 06-10 21:10:17.668 E/AndroidRuntime( 3785): at dalvik.system.NativeStart.main(Native Method) 06-10 21:10:17.684 I/Process ( 1017): Sending signal. PID: 3785 SIG: 3

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• Eclipse + Android + JUnit test references android.os class = NoClassDefFoundError WTF

  - by Peter Pascale

  I have a custom timer that extends android.os.CountDownTimer. I have a test in the test project (standard Android/Eclipse project config) that tests the custom Timer. When I try to run this test, I get a java.lang.NoClassDefFoundError: android/os/CountDownTimer at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:698) You get the idea. Can I not run code that references android code code in junit test?

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• Position of builtInZoomControls in WebView and MapView

  - by Mathias Lin

  I noticed that the position of the builtInZoomControls in WebView (bottom, horizontal right) is not consistent with the default position in the MapView (bottom, horizontal center). 1) Why is that not consistent? (Probably a question to be asked to Google) 2) Is there a way to horizontal center the builtInZoomControls of the WebView without applying custom Zoom controls? Or is that the only way?

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• Port android / android tv on nokia booklet 3G

  - by Suresh

  is it possible to port android (android tv) on Nokia booklet 3G , i like the booklet hardware (built in 3g modem and hdmi port and overall build) but windows 7 is horrible. it would be great to have android with android tv port on nokia booklet 3G any idea how to do?

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• Get preferences in AppWidget Provider

  - by Brian515

  Hi all, I seem to be having trouble reading preferences from my AppWidgetProvider class. My code works in an Activity, but it does not in an AppWidgetProvider. Here is the code I am using to read back a boolean: SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0); boolean autoreplyon = settings.getBoolean("autoreplyon", false); However, I get the "The method getSharedPreferences(String, int) is undefined for the type widget" error (widget is the name of my AppWidgetProvider class). Thanks in advance for any suggestions!

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• twitter4j code doent work on ICS and JellyBean help me

  - by swapnil adsure

  Hey guys i am using twitter4J to post tweet on twitter Here i Change the Code according to your suggestion . i do some google search. The problem is When i try to shift from main activity to twitter activity it show force close. Main activity is = "MainActivity" twitter activity is = "twiti_backup" I think there is problem in Manifestfile but i dont know what was it. public class twiti_backup extends Activity { private static final String TAG = "Blundell.TweetToTwitterActivity"; private static final String PREF_ACCESS_TOKEN = ""; private static final String PREF_ACCESS_TOKEN_SECRET = ""; private static final String CONSUMER_KEY = ""; private static final String CONSUMER_SECRET = ""; private static final String CALLBACK_URL = "android:///"; private SharedPreferences mPrefs; private Twitter mTwitter; private RequestToken mReqToken; private Button mLoginButton; private Button mTweetButton; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.i(TAG, "Loading TweetToTwitterActivity"); setContentView(R.layout.twite); mPrefs = getSharedPreferences("twitterPrefs", MODE_PRIVATE); mTwitter = new TwitterFactory().getInstance(); mTwitter.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET); mLoginButton = (Button) findViewById(R.id.login_button); mTweetButton = (Button) findViewById(R.id.tweet_button); } public void buttonLogin(View v) { Log.i(TAG, "Login Pressed"); if (mPrefs.contains(PREF_ACCESS_TOKEN)) { Log.i(TAG, "Repeat User"); loginAuthorisedUser(); } else { Log.i(TAG, "New User"); loginNewUser(); } } public void buttonTweet(View v) { Log.i(TAG, "Tweet Pressed"); tweetMessage(); } private void loginNewUser() { try { Log.i(TAG, "Request App Authentication"); mReqToken = mTwitter.getOAuthRequestToken(CALLBACK_URL); Log.i(TAG, "Starting Webview to login to twitter"); WebView twitterSite = new WebView(this); twitterSite.loadUrl(mReqToken.getAuthenticationURL()); setContentView(twitterSite); } catch (TwitterException e) { Toast.makeText(this, "Twitter Login error, try again later", Toast.LENGTH_SHORT).show(); } } private void loginAuthorisedUser() { String token = mPrefs.getString(PREF_ACCESS_TOKEN, null); String secret = mPrefs.getString(PREF_ACCESS_TOKEN_SECRET, null); // Create the twitter access token from the credentials we got previously AccessToken at = new AccessToken(token, secret); mTwitter.setOAuthAccessToken(at); Toast.makeText(this, "Welcome back", Toast.LENGTH_SHORT).show(); enableTweetButton(); } @Override protected void onNewIntent(Intent intent) { super.onNewIntent(intent); Log.i(TAG, "New Intent Arrived"); dealWithTwitterResponse(intent); } @Override protected void onResume() { super.onResume(); Log.i(TAG, "Arrived at onResume"); } private void dealWithTwitterResponse(Intent intent) { Uri uri = intent.getData(); if (uri != null && uri.toString().startsWith(CALLBACK_URL)) { // If the user has just logged in String oauthVerifier = uri.getQueryParameter("oauth_verifier"); authoriseNewUser(oauthVerifier); } } private void authoriseNewUser(String oauthVerifier) { try { AccessToken at = mTwitter.getOAuthAccessToken(mReqToken, oauthVerifier); mTwitter.setOAuthAccessToken(at); saveAccessToken(at); // Set the content view back after we changed to a webview setContentView(R.layout.twite); enableTweetButton(); } catch (TwitterException e) { Toast.makeText(this, "Twitter auth error x01, try again later", Toast.LENGTH_SHORT).show(); } } private void enableTweetButton() { Log.i(TAG, "User logged in - allowing to tweet"); mLoginButton.setEnabled(false); mTweetButton.setEnabled(true); } private void tweetMessage() { try { mTwitter.updateStatus("Test - Tweeting with @Blundell_apps #AndroidDev Tutorial using #Twitter4j http://blog.blundell-apps.com/sending-a-tweet/"); Toast.makeText(this, "Tweet Successful!", Toast.LENGTH_SHORT).show(); } catch (TwitterException e) { Toast.makeText(this, "Tweet error, try again later", Toast.LENGTH_SHORT).show(); } } private void saveAccessToken(AccessToken at) { String token = at.getToken(); String secret = at.getTokenSecret(); Editor editor = mPrefs.edit(); editor.putString(PREF_ACCESS_TOKEN, token); editor.putString(PREF_ACCESS_TOKEN_SECRET, secret); editor.commit(); } } And here is Manifest <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/title_activity_main" android:launchMode="singleInstance" android:configChanges="orientation|screenSize"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".twiti_backup" android:launchMode="singleInstance"> <action android:name="android.intent.action.VIEW" /> <category android:name="android.intent.category.DEFAULT" /> <category android:name="android.intent.category.BROWSABLE" /> <data android:scheme="android" android:host="callback_main" /> </activity> <activity android:name=".MyTwite"/> <activity android:name=".mp3" /> <activity android:name=".myfbapp" /> </application> Here is Log cat when i try to launch twiti_backup from main activity W/dalvikvm(16357): threadid=1: thread exiting with uncaught exception (group=0x4001d5a0) E/AndroidRuntime(16357): FATAL EXCEPTION: main E/AndroidRuntime(16357): java.lang.VerifyError: com.example.uitest.twiti_backup E/AndroidRuntime(16357): at java.lang.Class.newInstanceImpl(Native Method) E/AndroidRuntime(16357): at java.lang.Class.newInstance(Class.java:1409) E/AndroidRuntime(16357): at android.app.Instrumentation.newActivity(Instrumentation.java:1040) E/AndroidRuntime(16357): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1735) E/AndroidRuntime(16357): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1842) E/AndroidRuntime(16357): at android.app.ActivityThread.access$1500(ActivityThread.java:132) E/AndroidRuntime(16357): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1038) E/AndroidRuntime(16357): at android.os.Handler.dispatchMessage(Handler.java:99) E/AndroidRuntime(16357): at android.os.Looper.loop(Looper.java:143) E/AndroidRuntime(16357): at android.app.ActivityThread.main(ActivityThread.java:4263) E/AndroidRuntime(16357): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime(16357): at java.lang.reflect.Method.invoke(Method.java:507) E/AndroidRuntime(16357): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) E/AndroidRuntime(16357): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) E/AndroidRuntime(16357): at dalvik.system.NativeStart.main(Native Method)

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• How to fix "OutOfMemoryError: java heap space" while compiling MonoDroid App in MonoDevelop

  - by Rodja

  When I try to compile one of my projects, I recently get the following error: Tool /usr/bin/java execution started with arguments: -jar /Applications/android-sdk-mac_x86/platform-tools/lib/dx.jar --no-strict --dex --output=obj/Debug/android/bin/classes.dex obj/Debug/android/bin/classes /Developer/MonoAndroid/usr/lib/mandroid/platforms/android-8/mono.android.jar FlurryAnalytics/Jars/FlurryAgent.jar Jars/android-support-v4.jar UNEXPECTED TOP-LEVEL ERROR: java.lang.OutOfMemoryError: Java heap space at com.android.dx.rop.code.RegisterSpecSet.<init>(RegisterSpecSet.java:49) at com.android.dx.rop.code.RegisterSpecSet.mutableCopy(RegisterSpecSet.java:383) at com.android.dx.ssa.LocalVariableInfo.mutableCopyOfStarts(LocalVariableInfo.java:169) at com.android.dx.ssa.LocalVariableExtractor.processBlock(LocalVariableExtractor.java:104) at com.android.dx.ssa.LocalVariableExtractor.doit(LocalVariableExtractor.java:90) at com.android.dx.ssa.LocalVariableExtractor.extract(LocalVariableExtractor.java:56) at com.android.dx.ssa.SsaConverter.convertToSsaMethod(SsaConverter.java:50) at com.android.dx.ssa.Optimizer.optimize(Optimizer.java:99) at com.android.dx.ssa.Optimizer.optimize(Optimizer.java:73) at com.android.dx.dex.cf.CfTranslator.processMethods(CfTranslator.java:273) at com.android.dx.dex.cf.CfTranslator.translate0(CfTranslator.java:134) at com.android.dx.dex.cf.CfTranslator.translate(CfTranslator.java:87) at com.android.dx.command.dexer.Main.processClass(Main.java:487) at com.android.dx.command.dexer.Main.processFileBytes(Main.java:459) at com.android.dx.command.dexer.Main.access$400(Main.java:67) at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:398) at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:245) at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:131) at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:109) at com.android.dx.command.dexer.Main.processOne(Main.java:422) at com.android.dx.command.dexer.Main.processAllFiles(Main.java:333) at com.android.dx.command.dexer.Main.run(Main.java:209) at com.android.dx.command.dexer.Main.main(Main.java:174) at com.android.dx.command.Main.main(Main.java:91) Other projects build as expected. I think I need to increase the heap size for this java build step? But how?

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• Can't get precise layout on Nexus One

  - by Johnny

  I want to use precise layout on Nexus One, my code is like this: <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="90px"> <ImageView android:layout_width="5px" android:layout_height="fill_parent" android:src="@drawable/d10" /> <ImageView android:layout_width="94px" android:layout_height="fill_parent" android:src="@drawable/d5" /> <ImageView android:layout_width="94px" android:layout_height="fill_parent" android:src="@drawable/d6" /> <ImageView android:layout_width="94px" android:layout_height="fill_parent" android:src="@drawable/d7" /> <ImageView android:layout_width="94px" android:layout_height="fill_parent" android:src="@drawable/d8" /> <ImageView android:layout_width="94px" android:layout_height="fill_parent" android:src="@drawable/d9" /> <ImageView android:layout_width="5px" android:layout_height="fill_parent" android:src="@drawable/d10" /> But it turns out on Nexus One, the screen width is not 480 px. So this LinearLayout will exceed the screen width. How should I fix this?

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• How to return ArrayList results from an IntentService

  - by gcl1

  I have an IntentService that loads up an ArrayList with data from a network source (AWS SDB tables). The ArrayList is in a global space -- accessible to both the calling Activity and the IntentService (like this: appState = ((App)getApplicationContext())). When the IntentService is done, it notifies the Activity through a ResultReceiver, and the Activity calls adapter.notifyDataChanged() to update the ListView. This solution works most of the time, ... but it violates the rule that only the UI thread should make changes to data underlying a ListView. So as it is, I sometimes get an error: "The content of the adapter has changed but ListView did not receive a notification." I think this must be a common situation. Please let me know if you have any suggestions or best practices for this problem. Here are three options I'm aware of: Keep the IntentService, and have it store the results in another "working" ArrayList, also in the global space. When the result is ready, the IntentService calls the ResultReceiver (on the UI thread), which can then: a) copy the result to the ArrayList associated with the ListView, and b) call adapter.notifyDataChanged(). CONS: I don't like the idea of putting temp/working data in a global space, and copying the result list seems inefficient. Keep the IntentService, and have it pass the results back through a bundle loaded with a ParcelableArrayList. CONS: I'm not sure if this approach would scale for very large result sets. It also requires copying the result list. Switch to a Service which builds a local copy of the result list. Have the Activity directly access the address space of the Service in order to read the result list. CON: Still requires copying results to the ArrayList associated with the ListView. Thank you.

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• how can i update view when fragment change?

  - by user1524393

  i have a activity that have 2 sherlockfragment in this The first two pages display fragments with custom list views which are built from xml from server using AsyncTask. However, when the app runs, only one list view is displayed, the other page is just blank public class VpiAbsTestActivity extends SherlockFragmentActivity { private static final String[] CONTENT = new String[] { "1","2"}; TestFragmentAdapter mAdapter; ViewPager mPager; PageIndicator mIndicator; protected void onCreate(Bundle savedInstanceState) { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); super.onCreate(savedInstanceState); setContentView(R.layout.simple_tabs); mAdapter = new TestFragmentAdapter(getSupportFragmentManager()); mPager = (ViewPager)findViewById(R.id.pager); mPager.setAdapter(mAdapter); mIndicator = (TabPageIndicator)findViewById(R.id.indicator); mIndicator.setViewPager(mPager); mIndicator.notifyDataSetChanged(); } class TestFragmentAdapter extends FragmentPagerAdapter { private int mCount = CONTENT.length; public TestFragmentAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { switch(position) { case 0: return new customlist(); case 1: return new customlistnotuser(); default: return null; } } @Override public int getCount() { return mCount; } public CharSequence getPageTitle(int position) { return VpiAbsTestActivity.CONTENT[position % VpiAbsTestActivity.CONTENT.length].toUpperCase(); } @Override public void destroyItem(View collection, int position, Object view) { ((ViewPager) collection).removeView((View) view); } } } what can i update viewpager when change pages ? the customlistnotuser page likes customlist page but not show public class customlistnotuser extends SherlockFragment { // All static variables static final String URL = "url"; // XML node keys static final String KEY_TEST = "test"; // parent node static final String KEY_ID = "id"; static final String KEY_TITLE = "title"; static final String KEY_Description = "description"; static final String KEY_DURATION = "duration"; static final String KEY_THUMB_URL = "thumb_url"; static final String KEY_PRICE = "price"; static final String KEY_URL = "url"; private ProgressDialog pDialog; ListView list; LazyAdapterbeth adapter; XMLParser parser = new XMLParser(); public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); } public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); new getFeed().execute(); } public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View thisfragment = inflater.inflate(R.layout.dovomi, container, false); return thisfragment; } private class getFeed extends AsyncTask<Void, Void, Document> { } protected Document doInBackground(Void... params) { XMLParser parser = new XMLParser(); String xml = parser.getXmlFromUrl(URL); // getting XML from URL Document doc = parser.getDomElement(xml); // getting DOM element return doc; } protected void onPostExecute(Document doc) { ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>(); NodeList nl = doc.getElementsByTagName(KEY_TEST); // looping through all song nodes <song> for (int i = 0; i < nl.getLength(); i++) { // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); Element e = (Element) nl.item(i); // adding each child node to HashMap key => value map.put(KEY_ID, parser.getValue(e, KEY_ID)); map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE)); map.put(KEY_Description, parser.getValue(e, KEY_Description)); map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION)); map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL)); map.put(KEY_PRICE, parser.getValue(e, KEY_PRICE)); map.put(KEY_URL, parser.getValue(e, KEY_URL)); // adding HashList to ArrayList songsList.add(map); pDialog.dismiss(); } list=(ListView)getActivity().findViewById(R.id.list); // Getting adapter by passing xml data ArrayList adapter=new LazyAdapterbeth(getActivity(), songsList); list.setAdapter(adapter); // Click event for single list row list.setOnItemClickListener(new OnItemClickListener() {

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• how to show all added items into another activity, like: AddtoCart and ViewCart Functionality

  - by Stanley

  i am trying to make a shopping cart app, allowing user to choose category then select item to purchase, once user will click on any item to purchase, then showing that selected item into another activity with item image, name, cost, qty (to accept by user) and also providing add to cart functionality, now i want whenever user will click on Add to Cart button, then selected item need to show in ViewCart Activity, so here i am placing my AddtoCart Activity code, please tell me what i need to write to show added item(s) into ViewCart Category just like in shopping cart, In ViewCart activity i just want to show item title, cost and qty (entered by user):- public class AddtoCart extends Activity{ static final String KEY_TITLE = "title"; static final String KEY_COST = "cost"; static final String KEY_THUMB_URL = "imageUri"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.single); Intent in = getIntent(); String title = in.getStringExtra(KEY_TITLE); String thumb_url = in.getStringExtra(KEY_THUMB_URL); String cost = in.getStringExtra(KEY_COST); ImageLoader imageLoader = new ImageLoader(getApplicationContext()); ImageView imgv = (ImageView) findViewById(R.id.single_thumb); TextView txttitle = (TextView) findViewById(R.id.single_title); TextView txtcost = (TextView) findViewById(R.id.single_cost); txttitle.setText(title); txtcost.setText(cost); imageLoader.DisplayImage(thumb_url, imgv); // Save a reference to the quantity edit text final EditText editTextQuantity = (EditText) findViewById(R.id.edit_qty); ImageButton addToCartButton = (ImageButton) findViewById(R.id.img_add); addToCartButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { // Check to see that a valid quantity was entered int quantity = 0; try { quantity = Integer.parseInt(editTextQuantity.getText() .toString()); if (quantity <= 0) { Toast.makeText(getBaseContext(), "Please enter a quantity of 1 or higher", Toast.LENGTH_SHORT).show(); return; } } catch (Exception e) { Toast.makeText(getBaseContext(), "Please enter a numeric quantity", Toast.LENGTH_SHORT).show(); return; } // Close the activity finish(); } }); }}

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• How to add a dynamically resolved activity name to the back stack (without using PARENT_ACTIVITY)?

  - by user3214249

  The goal is 1) Start activity A from AppWidgetProvider or any other background task (it is simple). 2) From activity A go to activity B after clicking Back button. The problem is that I can't set PARENT_ACTIVITY in AndroidManifest.xml, because the activity B class name gets determined at run time. So in one case I need to go to activity B, in other case it is another activity. Seems like I can't use TaskStackBuilder without PARENT_ACTIVITY. I could handle this in the finish() method of activity A, but it should be a simpler way to add activity B to the "back stack" when I run startActivity(intent). Any ideas?

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• Evernote for Android Updates with New Features and Updated Widget

  - by Jason Fitzpatrick

  Android: Evernote for Android now features enhanced sharing, tighter Skitch integration, and a brand new homescreen widget. With this update you can now share entire notebooks directly from your Android phone, edit and annotate images with Skitch, and use the Evernote widget regardless of where you have Evernote installed–the previous version of Evernote’s widget would only function if Evernote was installed on the main memory instead of the SD card. You can read more about the new release here or hit up the link below to grab a copy from the Android Market. Evernote [Android Market] How to Make the Kindle Fire Silk Browser *Actually* Fast! Amazon’s New Kindle Fire Tablet: the How-To Geek Review HTG Explains: How Hackers Take Over Web Sites with SQL Injection / DDoS

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• Android - Switching Activities with a Tab Layout

  - by Bill Osuch

  This post is based on the Tab Layout  tutorial on the Android developers site, with some modifications. I wanted to get rid of the icons (they take up too much screen real estate), and modify the fonts on the tabs. First, create a new Android project, with an Activity called TabWidget. Then, create two additional Activities called TabOne and TabTwo. Throw a simple TextView on each one with a message identifying the tab, like this: public class TabTwo extends Activity {  @Override  public void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   TextView tv = new TextView(this);   tv.setText("This is tab 2");   setContentView(tv);  } } And don't forget to add them to your AndroidManifest.xml file: <activity android:name=".TabOne"></activity> <activity android:name=".TabTwo"></activity> Now we'll create the tab layout - open the res/layout/main.xml file and insert the following: <?xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android"  android:id="@android:id/tabhost"  android:layout_width="fill_parent"  android:layout_height="fill_parent">  <LinearLayout   android:orientation="vertical"   android:layout_width="fill_parent"   android:layout_height="fill_parent">   <TabWidget    android:id="@android:id/tabs"    android:layout_width="fill_parent"    android:layout_height="wrap_content" />   <FrameLayout    android:id="@android:id/tabcontent"             android:layout_width="fill_parent"    android:layout_height="fill_parent" />  </LinearLayout> </TabHost> Finally, we'll create the code needed to populate the TabHost. Make sure your TabWidget class extends TabActivity rather than Activity, and add code to grab the TabHost and create an Intent to launch a new Activity:    TabHost tabHost = getTabHost();  // The activity TabHost    TabHost.TabSpec spec;  // Reusable TabSpec for each tab    Intent intent;  // Reusable Intent for each tab       // Create an Intent to launch an Activity for the tab (to be reused)    intent = new Intent().setClass(this, TabOne.class); Add the first tab to the layout:    // Initialize a TabSpec for each tab and add it to the TabHost    spec = tabHost.newTabSpec("tabOne");      spec.setContent(intent);     spec.setIndicator("Tab One");     tabHost.addTab(spec); It's pretty tall as-is, so we'll shorten it:   // Squish the tab a little bit horizontally   tabHost.getTabWidget().getChildAt(0).getLayoutParams().height = 40; But the text is a little small, so let's increase the font size:   // Bump the text size up   LinearLayout ll = (LinearLayout) tabHost.getChildAt(0);   android.widget.TabWidget tw = (android.widget.TabWidget) ll.getChildAt(0);   RelativeLayout rllf = (RelativeLayout) tw.getChildAt(0);   TextView lf = (TextView) rllf.getChildAt(1);   lf.setTextSize(20); Do the same for the second tab, and you wind up with this: @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);                 TabHost tabHost = getTabHost();  // The activity TabHost         TabHost.TabSpec spec;  // Reusable TabSpec for each tab         Intent intent;  // Reusable Intent for each tab            // Create an Intent to launch an Activity for the tab (to be reused)         intent = new Intent().setClass(this, TabOne.class);         // Initialize a TabSpec for each tab and add it to the TabHost         spec = tabHost.newTabSpec("tabOne");           spec.setContent(intent);          spec.setIndicator("Tab One");          tabHost.addTab(spec);         // Squish the tab a little bit horizontally         tabHost.getTabWidget().getChildAt(0).getLayoutParams().height = 40;         // Bump the text size up         LinearLayout ll = (LinearLayout) tabHost.getChildAt(0);         android.widget.TabWidget tw = (android.widget.TabWidget) ll.getChildAt(0);         RelativeLayout rllf = (RelativeLayout) tw.getChildAt(0);         TextView lf = (TextView) rllf.getChildAt(1);         lf.setTextSize(20);            // Do the same for the other tabs         intent = new Intent().setClass(this, TabTwo.class);         spec = tabHost.newTabSpec("tabTwo");          spec.setContent(intent);          spec.setIndicator("Tab Two");         tabHost.addTab(spec);         tabHost.getTabWidget().getChildAt(1).getLayoutParams().height = 40;         RelativeLayout rlrf = (RelativeLayout) tw.getChildAt(1);         TextView rf = (TextView) rlrf.getChildAt(1);         rf.setTextSize(20);            tabHost.setCurrentTab(0);     } Save and fire up the emulator, and you should be able to switch back and forth between your tabs!

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