Android Widget Configuration Open Activity

Question

I want to create a widget for an app and have already written widget provider and configuration classes. I just have one image in widget layout and when it is clicked, I want it to open MyActivity Activity class. On configuration layout there is one red image, when I click that image, widget image gets changed. The Problem is when I click the widget, it does not open MyActivity.

Where should I put views.setOnClickPendingIntent? Into appWidgetProvider ? Into appWidgetConfiguration? Into both?

Question 2 is: Do I have to put this code into MyActivity in order to open it with widget click? : sendBroadcast(new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_HOME));

Here is what I have:

appwidget.xml

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">


    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher"
        android:id="@+id/imageWidget" />
</LinearLayout>

appWidgetProvider.java

public class OffAppWidgetProvider extends AppWidgetProvider {

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        final int N = appWidgetIds.length;               
        for (int i=0; i<N; i++) {
            int appWidgetId = appWidgetIds[i];

            Intent intent = new Intent(context, MyActivity.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.appwidget);
            views.setOnClickPendingIntent(R.id.imageWidget, pendingIntent);

            appWidgetManager.updateAppWidget(appWidgetId, views);
        }
    }

appWidgetConfiguration.java

public class AppWidgetConfiguration extends Activity{
    private int mAppWidgetId;
    private ImageView image;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setResult(RESULT_CANCELED);
        setContentView(R.layout.activity_appwidget_configuration);

        Intent intent = getIntent();
        Bundle extras = intent.getExtras();
        if (extras != null) {
            mAppWidgetId = extras.getInt(
                AppWidgetManager.EXTRA_APPWIDGET_ID,
                AppWidgetManager.INVALID_APPWIDGET_ID);
        }

        image=(ImageView)findViewById(R.id.imageWidgetRed);
        image.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Context context= AppWidgetConfiguration.this;
                AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
                RemoteViews views = new RemoteViews(getPackageName(),R.layout.appwidget);
                views.setImageViewResource(R.id.imageWidget,R.mipmap.widgetred);                        

                appWidgetManager.updateAppWidget(mAppWidgetId, views);

                Intent resultValue = new Intent();
                resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
                setResult(RESULT_OK, resultValue);
                finish();
            }
        });   

    }

Answer 1

1) It turns out that i have to put views.setOnClickPendingIntent(R.id.imageWidget, pendingIntent); to both appWidgetProvider and appWidgetConfiguration before the line appWidgetManager.updateAppWidget(mAppWidgetId, views);. Below is what i have written for click listener:

RemoteViews views = new RemoteViews(getPackageName(),R.layout.appwidget);
Intent intent = new Intent(context, MyActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
views.setOnClickPendingIntent(R.id.imageWidget, pendingIntent);
appWidgetManager.updateAppWidget(mAppWidgetId, views);

2) I can open my activity which has xml layout without putting this code in target activity: sendBroadcast(new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_HOME)). But MyActivity.java does not have xml layout and i had to put this code (into Oncreate) in order to open it with widget click. Second option is instead of putting this in target activity, write intent.addCategory(Intent.CATEGORY_LAUNCHER); when opening that activity as above.