title: Android custom dialog force close
body: <p>I am implementing a custom dialog to form an about screen with a simple look and feel (which may become more complex once I get it working).  I have a xml layout that loads some text and an icon from R.   However when ever showDialog(int) is called I get a force close.</p>
  
  <p>I followed the instructions as per the dev guide: <a href="http://developer.android.com/intl/de/guide/topics/ui/dialogs.html" rel="noreferrer">http://developer.android.com/intl/de/guide/topics/ui/dialogs.html</a></p>
  
  <p>code is as follows:</p>
  
  <pre><code> @Override
   protected Dialog onCreateDialog(int id) {
     Dialog dialog;
        switch(id) {
        case DIAG_ABOUT:
         dialog = new Dialog(getApplicationContext());
         dialog.setContentView(R.layout.aboutdialog);
         dialog.setTitle(R.string.about_title);
         dialog.setOwnerActivity(this);
         break;
        default:
            dialog = null;
        }
        return dialog;
   }
  </code></pre>
  
  <p>DIAG_ABOUT is defined as <code>private static final int DIAG_ABOUT = 0;</code></p>
  
  <p>The Log cat shows the following trace:</p>
  
  <pre><code>03-04 11:37:08.760: ERROR/AndroidRuntime(726): Uncaught handler: thread main exiting due to uncaught exception
  03-04 11:37:08.780: ERROR/AndroidRuntime(726): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.ViewRoot.setView(ViewRoot.java:429)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:178)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.app.Dialog.show(Dialog.java:231)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.app.Activity.showDialog(Activity.java:2407)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at uk.me.cpearson.runningLate.Home.onOptionsItemSelected(Home.java:143)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.app.Activity.onMenuItemSelected(Activity.java:2085)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:820)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:139)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:813)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:519)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:122)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.View.onTouchEvent(View.java:3828)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.widget.TextView.onTouchEvent(TextView.java:6291)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.View.dispatchTouchEvent(View.java:3368)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1691)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1525)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.os.Handler.dispatchMessage(Handler.java:99)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.os.Looper.loop(Looper.java:123)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at android.app.ActivityThread.main(ActivityThread.java:3948)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at java.lang.reflect.Method.invokeNative(Native Method)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at java.lang.reflect.Method.invoke(Method.java:521)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
  03-04 11:37:08.780: ERROR/AndroidRuntime(726):     at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>Can some one point out where I have gone wrong, I am using SDK 1.5 </p>