GridView dans les widgets android

Question

J'ai essayé d'implémenter le widget pour mon application avec GridView. Je suis nouveau sur Android Development. J'ai beaucoup cherché sur internet mais je n'ai rien trouvé d'utile. Je suis coincé ici, car cela ne montre rien sur mon GridView. Toute aide serait appréciée.

Merci d'avance!

Ceci est mon code

public class MainActivity extends AppWidgetProvider{ 

public static final String TOAST_ACTION = "com.example.widgetdevelopment.TOAST_ACTION"; 
public static final String EXTRA_ITEM = "com.example.widgetdevelopment.EXTRA_ITEM"; 



@Override 
public void onReceive(Context context, Intent intent) { 

    AppWidgetManager mgr = AppWidgetManager.getInstance(context); 
    if (intent.getAction().equals(TOAST_ACTION)) { 
     int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, 
       AppWidgetManager.INVALID_APPWIDGET_ID); 
     int viewIndex = intent.getIntExtra(EXTRA_ITEM, 0); 
     Toast.makeText(context, "Touched view " + viewIndex,  Toast.LENGTH_SHORT).show(); 
    } 
    super.onReceive(context, intent); 
} 

@Override 
public void onUpdate(Context context, AppWidgetManager appWidgetManager, 
     int[] appWidgetIds) { 
    for (int i = 0; i < appWidgetIds.length; ++i) { 
     Intent intent = new Intent(context, GridWidgetService.class); 
     intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]); 

     intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))); 
     RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.activity_main); 
     rv.setRemoteAdapter(appWidgetIds[i], R.id.gridView1, intent); 

     rv.setEmptyView(R.id.gridView1, R.id.empty_view); 


     Intent toastIntent = new Intent(context, MainActivity.class); 

     toastIntent.setAction(MainActivity.TOAST_ACTION); 
     toastIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]); 
     intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))); 
     PendingIntent toastPendingIntent; 
    toastPendingIntent=PendingIntent.getBroadcast(context,0,toastIntent,PendingIntent.FLAG_UPDATE_CURRENT); 
     rv.setPendingIntentTemplate(R.id.gridView1, toastPendingIntent); 

     appWidgetManager.updateAppWidget(appWidgetIds[i], rv); 
    } 

    super.onUpdate(context, appWidgetManager, appWidgetIds); 

} 

} 

Ceci est mon RemoteViewServices classe

public class GridWidgetService extends RemoteViewsService{ 

@Override 
public RemoteViewsFactory onGetViewFactory(Intent intent) { 
    // TODO Auto-generated method stub 
    return new GridRemoteViewsFactory(this.getApplicationContext(), intent); 
} 

} 



public class GridRemoteViewsFactory implements RemoteViewsFactory { 

private static final int mCount = 10; 
private List<WidgetItem> mWidgetItems = new ArrayList<WidgetItem>(); 
private Context mContext; 
private int mAppWidgetId; 

public GridRemoteViewsFactory(Context context, Intent intent) { 
    mContext = context; 
    mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, 
      AppWidgetManager.INVALID_APPWIDGET_ID); 
} 

@Override 
public void onCreate() { 
    for (int i = 0; i < mCount; i++) { 
     mWidgetItems.add(new WidgetItem(i + "!")); 
    } 
    try { 
     Thread.sleep(3000); 
    } catch (InterruptedException e) { 
     e.printStackTrace(); 
    } 

} 

@Override 
public void onDataSetChanged() { 
    // TODO Auto-generated method stub 

} 

@Override 
public void onDestroy() { 
    // mWidgetItems.clear(); 

} 

@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return mCount; 
} 

@Override 
public RemoteViews getViewAt(int position) { 


    RemoteViews rv = new RemoteViews(mContext.getPackageName(), R.layout.widget_item); 
    rv.setTextViewText(R.id.widget_item, mWidgetItems.get(position).getSomething()); 
    Bundle extras = new Bundle(); 
    extras.putInt(MainActivity.EXTRA_ITEM, position); 
    Intent fillInIntent = new Intent(); 
    fillInIntent.putExtras(extras); 
    rv.setOnClickFillInIntent(R.id.widget_item, fillInIntent); 

    return rv; 
} 

@Override 
public RemoteViews getLoadingView() { 
    // TODO Auto-generated method stub 
    return null; 
} 



@Override 
public int getViewTypeCount() { 
    // TODO Auto-generated method stub 
    return 2; 
} 

@Override 
public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return 0; 
} 

@Override 
public boolean hasStableIds() { 
    // TODO Auto-generated method stub 
    return true; 
} 

} 

Ceci est ma classe d'objets.

public class WidgetItem { 
String something; 


public WidgetItem(String something) { 
super(); 
this.something = something; 
} 

public String getSomething() { 
return something; 
} 

public void setSomething(String something) { 
this.something = something; 
} 

} 

Widget_item XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context="com.example.widgetdevelopment.MainActivity" > 

<TextView 
    android:id="@+id/widget_item" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="@string/hello_world" /> 

</RelativeLayout> 

Main_Activity Mise en page (cette disposition est la mise en page du widget contenant GridView)

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:gravity="top" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context=".MainActivity" > 

<TextView 
    android:id="@+id/textView1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" 
    android:text="@string/website" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<Button 
    android:id="@+id/button1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignLeft="@+id/textView1" 
    android:layout_below="@+id/textView1" 
    android:text="@string/app_name" /> 

<GridView 
    android:id="@+id/gridView1" 
    android:layout_width="150dp" 
    android:layout_height="100dp" 
    android:layout_alignLeft="@+id/button1" 
    android:layout_alignParentRight="true" 
    android:layout_below="@+id/button1" 
    android:numColumns="3" > 

</GridView> 
<TextView 
    android:id="@+id/empty_view" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:gravity="center" 

    android:textColor="#ffffff" 
    android:textStyle="bold" 
    android:text="empty_view_text" 
    android:textSize="20sp" /> 

    </RelativeLayout> 

Answer 1

Avez-vous un service enregistré dans le AndroidManifest.xml? Comme ceci:

<service android:name="GridWidgetService" 
    android:permission="android.permission.BIND_REMOTEVIEWS" />