Android 24

snippet01.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:background="@drawable/frame">
  
  <TextView 
    android:id="@+id/nome"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_alignParentLeft="true"
    android:textSize="10pt"
    android:textColor="#FFFFFF" />
    
  <ImageButton 
    android:id="@+id/proximo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_alignParentRight="true"
    android:src="@drawable/proximo" />
</RelativeLayout>

snippet02.java

package net.rafaeltoledo.restaurante;
 
import android.app.IntentService;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.content.ComponentName;
import android.content.Intent;
import android.database.Cursor;
import android.widget.RemoteViews;
 
public class WidgetService extends IntentService {
 
  public WidgetService() {
    super("WidgetService");
  }
 
  @Override
  protected void onHandleIntent(Intent intent) {
    ComponentName cn = new ComponentName(this, WidgetAplicativo.class);
    RemoteViews atualizarFrame = new RemoteViews("net.rafaeltoledo.restaurante", R.layout.widget);
    GerenciadorRestaurantes gerenciador = new GerenciadorRestaurantes(this);
    AppWidgetManager mgr = AppWidgetManager.getInstance(this);
 
    try {
      Cursor c = gerenciador.getReadableDatabase().rawQuery("SELECT COUNT(*) FROM restaurantes", null);
      c.moveToFirst();
      int contador = c.getInt(0);
      c.close();
 
      if (contador > 0) {
        int deslocamento = (int) (contador * Math.random());
        String args[] = {String.valueOf(deslocamento)};
        c = gerenciador.getReadableDatabase().rawQuery("SELECT _id, nome FROM restaurantes LIMIT 1 OFFSET ?", args);
        c.moveToFirst();
        atualizarFrame.setTextViewText(R.id.nome, c.getString(1));
 
        c.close();
      } else {
        atualizarFrame.setTextViewText(R.id.nome, getString(R.string.vazio));
      }
    } finally {
      gerenciador.close();
    }
 
    mgr.updateAppWidget(cn, atualizarFrame);
  }
}

snippet03.xml

<service android:name=".WidgetService" />

snippet04.java

package net.rafaeltoledo.restaurante;
 
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
 
public class WidgetAplicativo extends AppWidgetProvider {
 
  @Override
  public void onUpdate(Context context, AppWidgetManager appWidgetManager,
      int[] appWidgetIds) {
    context.startService(new Intent(context, WidgetService.class));
  }
}

snippet05.java

Intent i = new Intent(this, WidgetService.class);
PendingIntent pi = PendingIntent.getService(this, 0, i, 0);
atualizarFrame.setOnClickPendingIntent(R.id.proximo, pi);
mgr.updateAppWidget(cn, atualizarFrame);

snippet06.java

@Override
protected void onHandleIntent(Intent intent) {
  ComponentName cn = new ComponentName(this, WidgetAplicativo.class);
  RemoteViews atualizarFrame = new RemoteViews("net.rafaeltoledo.restaurante", R.layout.widget);
  GerenciadorRestaurantes gerenciador = new GerenciadorRestaurantes(this);
  AppWidgetManager mgr = AppWidgetManager.getInstance(this);
 
  try {
    Cursor c = gerenciador.getReadableDatabase().rawQuery("SELECT COUNT(*) FROM restaurantes", null);
    c.moveToFirst();
    int contador = c.getInt(0);
    c.close();
 
    if (contador > 0) {
      int deslocamento = (int) (contador * Math.random());
      String args[] = {String.valueOf(deslocamento)};
      c = gerenciador.getReadableDatabase().rawQuery("SELECT _id, nome FROM restaurantes LIMIT 1 OFFSET ?", args);
      c.moveToFirst();
      atualizarFrame.setTextViewText(R.id.nome, c.getString(1));
 
      Intent i = new Intent(this, FormularioDetalhes.class);
      i.putExtra(ListaRestaurantes._ID, c.getString(0));
      PendingIntent pi = PendingIntent.getActivity(this, 0, i, PendingIntent.FLAG_UPDATE_CURRENT);
      atualizarFrame.setOnClickPendingIntent(R.id.nome, pi);
 
      c.close();
    } else {
      atualizarFrame.setTextViewText(R.id.nome, getString(R.string.vazio));
    }
  } finally {
    gerenciador.close();
  }
 
  Intent i = new Intent(this, WidgetService.class);
  PendingIntent pi = PendingIntent.getService(this, 0, i, 0);
  atualizarFrame.setOnClickPendingIntent(R.id.proximo, pi);
  mgr.updateAppWidget(cn, atualizarFrame);
}