单击时更新主屏幕小部件的TextView

Question

In my app I am keeping track of a counter, which can be incremented by clicking on a widget button.

I wanted to give the user some feedback that his clicking has added one to the counter - so i tried to add a textView above the widget button. Is there a way to update the presented number after clicking?

My code (currently shows an outdated value of the counter...):

for (int appWidgetId : appWidgetIds) {

    Intent incCounter = new Intent(context, WidgetBroadcastReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, incCounter, 0); //braodcasting to a counter changing module

    RemoteViews ButtonCounterView = new RemoteViews(context.getPackageName(), R.layout.home_screen_widget);
    ButtonCounterView.setOnClickPendingIntent(R.id.widgetCounterButton, pendingIntent);

    String updatedCounter = String.valueOf(countersMap.getInt(todaysDate.getDate(), 0));
    ButtonCounterView.setTextViewText(R.id.widgetCounter, updatedCounter);

    appWidgetManager.updateAppWidget(appWidgetId, ButtonCounterView);
}

Answer 1

You need to update remoteviews contents inside WidgetBroadcastReceiver and then refresh the widget as below:

AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(getApplicationContext());
ComponentName thisWidget = new ComponentName(getApplication(), YourWidget.class);
int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);
for (int widgetId : allWidgetIds) {
  appWidgetManager.updateAppWidget(widgetId, remoteViews);
}

Answer 2

Yes, there is.

Add and onClickStatement to your button where the user clicks (in the xml folder):

<Button android:id="@+id/mybutton"
    android:text="Click me!"
    android:onClick="myMethod" />

Then on your actual class, just create the following:

Button btn = (Button) findViewById(R.id.mybutton);

btn.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        myMethod();
    }
});

Then, myMethod() will basically do something like:

textView.setText("Enter text that says user has added one to the counter")