我一直在研究一个小部件并取得了一些进展(我希望如此),但仍然无法让它做我想做的事。
我有一个可以正常工作的配置器活动。当它关闭时,我调用 WordWidget 类中的 updateAppWidget 方法,小部件会更新随机数。
由于onClick,我不能做的就是改变随机数。根据日志,我确实输入了 onReceive() 方法,但仅此而已。
在日志中,我正在打印小部件 ID。我注意到,当从配置器活动运行时,它打印 appWidgetId=33,但是当我按下小部件时,它打印 appWidgetId=24。
这是代码:
public class WordWidget extends AppWidgetProvider
{
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
{
//This is run when a new widget is added or when the update period expires.
Log.v("wotd", "In onUpdate(), updating " + appWidgetIds.length + " widgets");
Log.v("wotd", " the array is " + appWidgetIds.toString());
for(int x = 0; x < appWidgetIds.length; x++)
{
Integer appWidgetId = appWidgetIds[x];
//Method that updates the random value
updateAppWidget(context, appWidgetManager, appWidgetId);
}
}
@Override
public void onReceive(Context context, Intent intent)
{
super.onReceive(context, intent);
Log.v("wotd", "In onReceive() with intent=" + intent.toString());
if (intent.getAction().equals("android.appwidget.action.APPWIDGET_UPDATE"))
{
Integer mAppWidgetId;
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
Bundle extras = intent.getExtras();
if(extras != null)
{
Log.v("wotd", "In onReceive(), extras is valid");
mAppWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
//If they gave us an intent without a valid widget Id, just bail.
if (mAppWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID)
{
Log.v("wotd", "In onReceive(), mAppWidgetId is ok");
updateAppWidget(context, appWidgetManager, mAppWidgetId);
}
} else
{
Log.v("wotd", "In onReceive(), extras is INVALID");
mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
}
}
}
static void updateAppWidget(Context context, AppWidgetManager appWidgetManager, Integer appWidgetId)
{
Log.v("wotd", "In updateAppWidget() with appWidgetId=" + appWidgetId);
//Setup onClick
Intent widgetIntent = new Intent(context, WordWidget.class);
widgetIntent.setAction("android.appwidget.action.APPWIDGET_UPDATE");
widgetIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
PendingIntent widgetPendingIntent = PendingIntent.getBroadcast(context, 0, widgetIntent, 0);
Integer nextNumb = new Random().nextInt(100);
Log.v("wotd", "In updateAppWidget(), nextNumb = " + nextNumb.toString());
RemoteViews remoteView = new RemoteViews(context.getPackageName(), R.layout.widgetlayout);
remoteView.setTextViewText(R.id.mainText, String.valueOf(nextNumb));
remoteView.setOnClickPendingIntent(R.id.mainText, widgetPendingIntent);
// Tell the widget manager
appWidgetManager.updateAppWidget(appWidgetId, remoteView);
}
}
这是从我触摸小部件时开始的日志文件(请注意,prefs 活动也有一个日志打印输出,并将小部件 ID 显示为与此不同的数字):
05-14 17:15:47.453: V/wotd(1585): In onReceive() with intent=Intent { act=android.appwidget.action.APPWIDGET_UPDATE flg=0x10000000 cmp=com.rfxlabs.wordofthedaywidget/.WordWidget bnds=[202,177][222,201] (has extras) }
05-14 17:15:47.453: V/wotd(1585): In onReceive(), extras is valid
05-14 17:15:47.463: V/wotd(1585): In onReceive(), mAppWidgetId is ok
05-14 17:15:47.463: V/wotd(1585): In updateAppWidget() with appWidgetId=24
05-14 17:15:47.463: V/wotd(1585): 在 updateAppWidget() 中,nextNumb = 42
如您所见,我实际上是在输入我的 updateAppWidget 方法,但由于某种原因 appWidgetId 不正确。
任何想法为什么会发生这种情况?非常感谢!