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POAppWidget won't work
 

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    <p>I'm using a configuration activity to toggle visibilty of different views in the xml file using RemoteViews. At first i thought, since the configuration activity is called before the widget is set, i wouldnt need to update, so i used : </p> <pre><code>package com.example.test.clock.one; import android.app.Activity; import android.appwidget.AppWidgetManager; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.RemoteViews; public class chooseract extends Activity { int mAppWidgetId; RemoteViews rv; AppWidgetManager appWidgetManager; Context context; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } public void buttonhandler(View view) { rv = new RemoteViews(context.getPackageName(), R.layout.activity_main); Intent intent = getIntent(); Bundle extras = intent.getExtras(); if (extras != null) { mAppWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID); } switch(view.getId()) { case R.id.button1: { rv.setViewVisibility(R.id.analogClock1, View.VISIBLE); rv.setViewVisibility(R.id.analogClock2, View.INVISIBLE); finish(); break; } case R.id.button2: { rv.setViewVisibility(R.id.analogClock1, View.INVISIBLE); rv.setViewVisibility(R.id.analogClock2, View.VISIBLE); finish(); break; } } } } </code></pre> <p>but that just sets a blank widget (default visibility is INVISIBLE) then i tried updating the appwidget after toggling visibility using</p> <pre><code>package com.example.test.clock.one; import android.app.Activity; import android.appwidget.AppWidgetManager; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.RemoteViews; public class chooseract extends Activity { int mAppWidgetId; RemoteViews rv; AppWidgetManager appWidgetManager; Context context; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } public void buttonhandler(View view) { rv = new RemoteViews(context.getPackageName(), R.layout.activity_main); Intent intent = getIntent(); Bundle extras = intent.getExtras(); if (extras != null) { mAppWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID); } switch(view.getId()) { case R.id.button1: { rv.setViewVisibility(R.id.analogClock1, View.VISIBLE); rv.setViewVisibility(R.id.analogClock2, View.INVISIBLE); break; } case R.id.button2: { rv.setViewVisibility(R.id.analogClock1, View.INVISIBLE); rv.setViewVisibility(R.id.analogClock2, View.VISIBLE); break; } } AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context); appWidgetManager.updateAppWidget(mAppWidgetId, rv); Intent resultValue = new Intent(); resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId); setResult(RESULT_OK, resultValue); finish(); } } </code></pre> <p>but this just force closes when i touch the buttons with a NullPointerException Any ideas?</p>
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