Android: "BadTokenException: Unable to add window; is your activity running?" at showing dialog in PreferenceActivity
I had a very similar issue (which landed me here) and found a very simple fix for it. While my code is different, it should be easy to adapt. Here is my fix:
public void showBox() { mActive = true; if (! ((Activity) mContext).isFinishing()) { mDialogBox.show(); }} So, in the sample code in the question, the fix would have been (at a guess):
@Overridepublic void onSharedPreferenceChanged(SharedPreferences preferences, String key) { if (key.equals("checkTest")) { if (! this.isFinishing()) { showDialog(1); } } if (key.equals("cancel")) { dismissDialog(1); }}// onSPC
Maybe you didn't close or unregister something in your activity. In that case, try unregistering the broadcastreceiver on onDestroy.
This is usually caused by your app trying to display a dialog using a previously-finished Activity as a context. Then check that the activity is not closed by some other apps or other triggers before showing the dialog
if (!isFinishing()) { //showdialog here }