棉花糖升级后，appwidget listview 行未更新或加载

Posted 2023-04-15

【中文标题】棉花糖升级后，appwidget listview 行未更新或加载

【英文标题】：appwidget listview rows not updating or loading after Marshmallow upgrade

【发布时间】：2016-01-23 21:15:14

【问题描述】：

我有一个小部件应用程序，可以在 android Lollipop 或更低的操作系统上正常运行。当我将我的 nexus 5 升级到 Marshmallow (android 6.0) 时，我意识到我的小部件在加载自定义行列表视图时出现问题。 Widget 有一个动态的 textView 和一个动态的 listView。 textView 完美运行；但 listView 行项目没有希望。当我添加小部件时，行卡在加载阶段。在 Lollipop 或更低的设备上运行的代码完全相同，但在 Marshmallow 上却没有。我相信 Marshmallow 导致了一个我还找不到的问题。我希望有人告诉我我做错了什么并帮助我解决这个问题。我很感激各种帮助。谢谢。

WidgetProvider.class：

@Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) 
        System.out.println("WidgetProvider.onUpdate()");

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
        final boolean isMaviKart = MainUtils.getCardType(context).equals(Constants.CARD_TYPE_MAVI);

        try 
            //set widget id
            ComponentName thisWidget = new ComponentName(context, WidgetProvider.class);
            int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);
            MainUtils.setWidgetID(prefs, allWidgetIds[allWidgetIds.length - 1]);

            for (int i = 0; i < appWidgetIds.length; i++) 
                Intent intentService = new Intent(context, WidgetService.class);

                intentService.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]);
                intentService.setData(Uri.parse(intentService.toUri(Intent.URI_INTENT_SCHEME)));

                RemoteViews widget = new RemoteViews(context.getPackageName(), R.layout.widget);
                widget.setRemoteAdapter(appWidgetIds[i], R.id.list_view, intentService);

                Intent clickIntent = new Intent(context, MainActivity.class);
                PendingIntent clickPI = PendingIntent.getActivity(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);

                widget.setPendingIntentTemplate(R.id.list_view, clickPI);

                if (isMaviKart) 
                    widget.setTextViewText(R.id.kalanPara, String.valueOf(MainUtils.getTokenPass(prefs)));
                    widget.setTextViewText(R.id.currency_tl, " Geçiş");
                
                else 
                    widget.setTextViewText(R.id.kalanPara, String.valueOf(MainUtils.getTotalMoney(prefs)));
                    widget.setTextViewText(R.id.currency_tl, " TL");
                

                appWidgetManager.updateAppWidget(appWidgetIds[i], widget);
            
        
        catch (Exception e) 
            e.printStackTrace();
            Toast.makeText(context, context.getResources().getString(R.string.error_occured), Toast.LENGTH_SHORT).show();
        
        super.onUpdate(context, appWidgetManager, appWidgetIds);
    


    @Override
    public void onReceive(Context context, Intent intent) 
        super.onReceive(context, intent);
        System.out.println("WidgetProvider.onReceive()");

        String key = intent.getStringExtra(Constants.EXTRA);
        if (key != null)
            Log.e("TEST", key);

    

WidgetViewsFactory.class：

@Override
    public RemoteViews getViewAt(int position) 

        Intent intent = new Intent();
        Bundle extras = new Bundle();

        rowButton = context.getResources().getIdentifier("widget_button","id", context.getPackageName());
        rowText = context.getResources().getIdentifier("widget_textview","id", context.getPackageName());

        RemoteViews row = new RemoteViews(context.getPackageName(), R.layout.row);

        // set BUTTON NAMES
        row.setTextViewText(rowButton, getFeeTypes(position));


        // simple rows:
        configureRowsInListview(row, position, context.getResources().getColor(R.color.DeepSkyBlue), View.VISIBLE);




        extras.putString(Constants.EXTRA, getEventKey(position));
        intent.putExtras(extras);
        row.setOnClickFillInIntent(rowButton, intent);
        row.setOnClickFillInIntent(rowText, intent);

        return row;
    

WidgetService.class：

public class WidgetService extends RemoteViewsService 
    @Override
    public RemoteViewsFactory onGetViewFactory(Intent intent) 
        return(new WidgetViewsFactory(this.getApplicationContext()));
    

MainActivity.class：（棉花糖上的关键字返回 null）

@Override
protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    prefs = PreferenceManager.getDefaultSharedPreferences(this);

    String keyWord = getIntent().getStringExtra(Constants.EXTRA);
    if (keyWord == null) 
        keyWord = "null";
        Log.e("onCreate() ", "No data Arrived yet!");
    


 private void updateWidgetScreen(String updateData, String currencyType) 

        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);
        RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.widget);
        ComponentName thisWidget = new ComponentName(this, WidgetProvider.class);
        remoteViews.setTextViewText(R.id.kalanPara, updateData);
        remoteViews.setTextViewText(R.id.currency_tl, currencyType);

        Intent intent = new Intent(this, WidgetService.class);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, MainUtils.getWidgetID(prefs));
        intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
        remoteViews.setRemoteAdapter(MainUtils.getWidgetID(prefs), R.id.list_view, intent);

        Intent clickIntent = new Intent(this, MainActivity.class);
        PendingIntent clickPI = PendingIntent.getActivity(this, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        remoteViews.setPendingIntentTemplate(R.id.list_view, clickPI);
        appWidgetManager.updateAppWidget(thisWidget, remoteViews);

        Log.e("updateWidgetScreen", updateData+" updateData - widgetid: "+ MainUtils.getWidgetID(prefs));
    

ListView 行问题：

【问题讨论】：

认为链接是源代码。嗯。没有原始代码很难修复安卓应用。

【参考方案1】：

我发现了我犯的错误。我有一个带有样式android:style/Widget.Material.Button 的按钮的自定义列表视图。当我删除按钮的样式时，它解决了我的问题。

   <Button
            android:id="@+id/widget_button"
            android:layout_
            android:layout_
            android:layout_gravity="center"
            android:text="Button"
            android:layout_marginRight="10dp"
            android:gravity="center"
            android:padding="8dp"
            android:textColor="@color/White"
            **style="@style/MaterialButton"**
            />

<style name="MaterialButton" parent="android:style/Widget.Material.Button">
       <item name="android:background">@drawable/raised_button_background</item>
</style>

【参考方案2】：

在我的例子中，我在列表视图项布局中使用了 androidx 类型的小部件，例如 androidx.appcompat.widget.AppCompatTextView。更改为 TextView 并解决了问题。