android - 使用 RemoteViews 单击时设置 ImageView 源

Question

有没有办法在点击远程视图时设置图像视图的源。我知道你可以做 remoteViews.setImageViewResource(R.id.image, R.drawable.source);

但这不允许我点击它。

任何帮助，将不胜感激。谢谢。

Answer 1

但这不允许我点击

是的，它确实。调用setOnClickPendingIntent()中的ImageView条目RemoteViews，使用PendingIntent指向您的AppWidgetProvider或其他的BroadcastReceiver。在那里，调用setImageResource()更新您ImageView的更新并通过AppWidgetManager.

例如，当用户点击任一骰子时，此示例使用新的随机骰子AppWidgetProvider更新一对小部件：ImageView

/***
  Copyright (c) 2008-2012 CommonsWare, LLC
  Licensed under the Apache License, Version 2.0 (the "License"); you may not
  use this file except in compliance with the License. You may obtain a copy
  of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
  by applicable law or agreed to in writing, software distributed under the
  License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
  OF ANY KIND, either express or implied. See the License for the specific
  language governing permissions and limitations under the License.

  From _The Busy Coder's Guide to Android Development_
    http://commonsware.com/Android
*/

package com.commonsware.android.appwidget.dice;

import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;

public class AppWidget extends AppWidgetProvider {
  private static final int[] IMAGES={R.drawable.die_1,R.drawable.die_2,
                                      R.drawable.die_3,R.drawable.die_4,
                                      R.drawable.die_5,R.drawable.die_6};

  @Override
  public void onUpdate(Context ctxt, AppWidgetManager mgr,
                        int[] appWidgetIds) {
    ComponentName me=new ComponentName(ctxt, AppWidget.class);

    mgr.updateAppWidget(me, buildUpdate(ctxt, appWidgetIds));
  }

  private RemoteViews buildUpdate(Context ctxt, int[] appWidgetIds) {
    RemoteViews updateViews=new RemoteViews(ctxt.getPackageName(),
                                            R.layout.widget);

    Intent i=new Intent(ctxt, AppWidget.class);

    i.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
    i.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);

    PendingIntent pi=PendingIntent.getBroadcast(ctxt, 0 , i,
                                                PendingIntent.FLAG_UPDATE_CURRENT);

    updateViews.setImageViewResource(R.id.left_die,
                                     IMAGES[(int)(Math.random()*6)]); 
    updateViews.setOnClickPendingIntent(R.id.left_die, pi);
    updateViews.setImageViewResource(R.id.right_die,
                                     IMAGES[(int)(Math.random()*6)]); 
    updateViews.setOnClickPendingIntent(R.id.right_die, pi);
    updateViews.setOnClickPendingIntent(R.id.background, pi);

    return(updateViews);
  }
}

（来自这个示例项目）