Question

我正在设计一个切换小部件，用于静音和取消静音媒体音量。它工作得很好，直到我安装任何新应用程序...然后它就停止工作。没有力量关闭或任何东西，当我按下它时它什么都不做。（如果我删除小部件并再次添加它，它将再次开始工作。）对于log cat，我没有看到任何与我的应用程序相关的消息。

我已经在下面发布了代码，但是如果你能够在概念上告诉我在安装新应用时主屏幕会发生什么，而且基本上我可以排除故障也会有所帮助。

感谢您的帮助。我已经在这几天了，只是想不出来。我有现货android 4.04 Galaxy Nexus。

public class JCrashWidget extends AppWidgetProvider {
public static String ACTION_WIDGET_RECEIVER = "com.JCrash.widget.ACTION_WIDGET_RECEIVER";
public static String ACTION_WIDGET_CONFIGURE = "com.JCrash.widget.ACTION_WIDGET_CONFIGURE";
private RemoteViews remoteViews = new RemoteViews("com.JCrash", R.layout.widgetstyle1 );

public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds){
    super.onUpdate(context, appWidgetManager, appWidgetIds);    

    Intent mediaClick = new Intent(context, JCrashWidget.class);
    mediaClick.setAction(ACTION_WIDGET_RECEIVER);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(context,  0, mediaClick, 0);       
    remoteViews.setOnClickPendingIntent(R.id.headphonesid, pendingIntent);

    appWidgetManager.updateAppWidget(appWidgetIds,remoteViews );
}

public void onReceive(Context context, Intent intent)
{
    super.onReceive(context, intent);

    AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
    ComponentName cn = new ComponentName(context, JCrashWidget.class);

    int cVol = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
    SharedPreferences myPrefs = context.getSharedPreferences("myPrefs", Context.MODE_WORLD_WRITEABLE);
    SharedPreferences.Editor prefsEditor = myPrefs.edit();

        if (intent.getAction().equals(ACTION_WIDGET_RECEIVER)) {
            if (cVol == 0)
            {
                cVol = myPrefs.getInt("PREVIOUS_VOLUME", 0);
                    remoteViews.setImageViewResource(R.id.headphonesid,R.drawable.headphones);
                    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, cVol,
                    AudioManager.FLAG_SHOW_UI);
                    cVol = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
            }

            else 
            {
                prefsEditor.putInt("PREVIOUS_VOLUME", cVol);
                prefsEditor.commit();
                cVol = myPrefs.getInt("PREVIOUS_VOLUME", 0);

                remoteViews.setImageViewResource(R.id.headphonesid,R.drawable.headphones_off);
                audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, 0, AudioManager.FLAG_SHOW_UI);

                cVol = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
            }
            AppWidgetManager.getInstance(context).updateAppWidget(cn, remoteViews);             
        }

}

}

Answer 1

想出来！我不得不在OnReceive方法和OnUpdate方法中再次设置OnClickPendingIntent。我只是创建一个函数来设置窗口小部件的挂起意图，并从OnReceive和OnUpdate调用它。

安装任何新应用程序后，切换小部件停止工作

1 个答案: