GridView en widgets de Android
He estado tratando de implementar el widget para mi aplicación conVista en cuadrícula . Soy nuevo en el desarrollo de Android. He buscado mucho en internet pero no pude encontrar nada útil. Estoy un poco atrapado aquí, ya que esto no muestra nada en miVista en cuadrícula . Cualquier ayuda sería apreciada.
Gracias por adelantado !
Este es mi código
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);
}
}
Esta es mi clase RemoteViewServices
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;
}
}
Esta es mi clase de objeto.
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>
Diseño de actividad principal (este diseño es el diseño del widget que contieneVista en cuadrícula )
<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>