调用 Android updateAppWidget 但未更新小部件或到达 RemoteViewsFactory？

问题描述

我的应用小部件（显示游戏分数的 ListView）在主屏幕上创建时运行良好，但是当我在提供程序内部调用 appWidgetManager.updateAppWidget(id,R.id.appwidget) 时，小部件或 {{1} 中的日志调用没有反应}} 的 RemoteViewsFactory 或 onCreate() 方法。我知道 onDataSetChanged() 会被调用，因为我可以在它之前看到日志调用。

为什么小部件没有更新？

我的 appwidgetprovider：

updateAppWidget

我的 RemoteViewsService 和 RemoteViewsFactory：

class scoresappwidgetprovider : appwidgetprovider() {

override fun onUpdate(context: Context,appWidgetManager: AppWidgetManager,appWidgetIds: IntArray) {
        updateallWidgets(appWidgetIds,context,appWidgetManager)
        super.onUpdate(context,appWidgetManager,appWidgetIds)
    }

private fun updateallWidgets(appWidgetIds: IntArray,context: Context,appWidgetManager: AppWidgetManager) {
        appWidgetIds.forEach { appWidgetId ->
            updateWidget(appWidgetId,false)
        }

    }

override fun onReceive(context: Context,intent: Intent) {
        super.onReceive(context,intent)

        Log.i("TAG","onReceive appWidgetId $appWidgetId") // This is logged and id is correct      
        if (intent.action.equals(ACTION_CLICK_REFRESH)) {
            appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetId,R.id.appwidget_list_view) // Works fine and updates the widget list
        } else if (intent.action.equals((ACTION_CLICK_SPOILERS_ON))) { // This is received
            updateWidget(appWidgetId,true)
        } else if (intent.action.equals((ACTION_CLICK_SPOILERS_OFF))) { // This is received
            updateWidget(appWidgetId,false)
        }
    }

private fun updateWidget(appWidgetId: Int,spoilers: Boolean) {
        
        val intent = Intent(context,AppWidgetService::class.java).apply {
            putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,appWidgetId)
            putExtra("testString","Intent received")
            data = Uri.parse(toUri(Intent.URI_INTENT_SCHEME))
        }

        // PendingIntent to refresh the appWidget contents
        val pendingRefreshClickIntent: PendingIntent = Intent(context,scoresappwidgetprovider::class.java).let {
            it.action = scoresappwidgetprovider.ACTION_CLICK_REFRESH
            it.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,appWidgetId)
            return@let PendingIntent.getbroadcast(context,appWidgetId,it,PendingIntent.FLAG_UPDATE_CURRENT)
        }

        // PendingIntent to toggle score spoilers
        val pendingSpoilersClickIntent: PendingIntent = Intent(context,scoresappwidgetprovider::class.java).let {
            it.action = if (spoilers) scoresappwidgetprovider.ACTION_CLICK_SPOILERS_ON else scoresappwidgetprovider.ACTION_CLICK_SPOILERS_ON
            it.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,PendingIntent.FLAG_UPDATE_CURRENT)
        }

        // RemoteViews object for the app widget layout
        val remoteViews = RemoteViews(context.packageName,R.layout.appwidget).apply {
            if (spoilers) {
                setimageViewResource(R.id.btn_spoilers,R.drawable.avd_anim_turn_off_spoilers)
            } else {
                setimageViewResource(R.id.btn_spoilers,R.drawable.avd_anim_turn_on_spoilers)
            }
            
            setRemoteAdapter(R.id.appwidget_list_view,intent)
            setEmptyView(R.id.appwidget_list_view,R.id.empty_view)
            setonClickPendingIntent(R.id.btn_refresh,pendingRefreshClickIntent)
            setonClickPendingIntent(R.id.btn_spoilers,pendingSpoilersClickIntent)
        }

        Log.i(TAG,"updateWidget: Calling updateWidget!") // This is logged
        appWidgetManager.updateAppWidget(appWidgetId,remoteViews) // NO EFFECT FROM THIS CALL!!
    }

}

解决方法

传递给 remoteViews 的布局似乎已被缓存，您必须使用不同的布局才能使其工作。我使用了两种不同的布局来根据布尔值更新小部件，并且效果很好。

val remoteViews = if (spoilers) RemoteViews(context.packageName,R.layout.appwidget_spoilers) else RemoteViews(context.packageName,R.layout.appwidget_no_spoilers)

布局可以相似，但必须有一些不同。就我而言，我为 ImageView 使用了不同的可绘制对象。