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POHow to launch an activity from a dialog?
 

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  1. POHow to launch an activity from a dialog?
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    <p>Any ideas how to launch an activity and send a value from a dialog button?</p> <p>Here's what I have at the moment. Tried a number of variations but app crashes when the button is pressed:</p> <pre><code>dialog.setPositiveButton("View Profile", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Intent intent = new Intent(); intent.setClass(context, Profile.class); intent.putExtra("profileID", "8"); startActivity(intent); dialog.cancel(); return; } }); </code></pre> <p>Full class:</p> <pre><code>public class PlacesItemizedOverlay extends ItemizedOverlay { private Context context; private ArrayList&lt;OverlayItem&gt; items = new ArrayList&lt;OverlayItem&gt;(); private Activity aClass; public PlacesItemizedOverlay(Context aContext, Drawable marker) { super(boundCenterBottom(marker)); context = aContext; } public void addOverlayItem(OverlayItem item) { items.add(item); populate(); } @Override protected OverlayItem createItem(int i) { return (OverlayItem) items.get(i); } @Override public int size() { return items.size(); } @Override protected boolean onTap(int index) { aClass = new Activity(); OverlayItem item = (OverlayItem) items.get(index); if(item.getTitle() != null) { AlertDialog.Builder dialog = new AlertDialog.Builder(context); dialog.setTitle(item.getTitle()); dialog.setPositiveButton("View Profile", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Intent intent = new Intent(); intent.setClass(context, Profile.class); intent.putExtra("profileID", "8"); aClass.startActivity(intent); dialog.cancel(); return; } }); dialog.show(); } return true; } } </code></pre> <p>LogCat:</p> <pre><code>06-24 10:35:31.253: WARN/dalvikvm(30118): threadid=1: thread exiting with uncaught exception (group=0x4001d5a0) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): FATAL EXCEPTION: main 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): java.lang.NullPointerException 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at android.app.Activity.startActivityForResult(Activity.java:2901) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at android.app.Activity.startActivity(Activity.java:3007) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at com.example.android.test.PlacesItemizedOverlay$1.onClick(PlacesItemizedOverlay.java:57) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:159) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at android.os.Handler.dispatchMessage(Handler.java:99) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at android.os.Looper.loop(Looper.java:143) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at android.app.ActivityThread.main(ActivityThread.java:4196) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at java.lang.reflect.Method.invokeNative(Native Method) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at java.lang.reflect.Method.invoke(Method.java:507) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 06-24 10:35:31.283: ERROR/AndroidRuntime(30118): at dalvik.system.NativeStart.main(Native Method) 06-24 10:35:31.293: WARN/ActivityManager(1344): Force finishing activity com.example.android.test/.SearchActivity </code></pre>
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    1. CO`putExtra()` is the right method to use. What's the error message in the stack trace?
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    2. COYou'll have to bare with me Haphazard, Im not used to debugging this yet. I will see if I can find the 'stack trace' and post it. Many thanks.
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    3. COType `adb logcat` into a command window and look for the big error message.
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