Question

我正在为从网站上抓取的图片构建图像查看器，该图片查看器的工作原理像一个超级按钮，现在唯一缺少的是使用户可以手动导航，而不仅是坐在那里并等待adapterviewflipper刷新。因此，我内置了两个用于导航的按钮。 AppWidgetProvider的代码如下：

public class CollectionWidget extends AppWidgetProvider {

    private final String NEXT_SCENE = "NAV_NEXT";
    private final String PREV_SCENE = "NAV_PREV";

    void updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
        RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.activity_main_widget);

        views.setOnClickPendingIntent(R.id.navSceneNext, getPendingSelfIntent(context, NEXT_SCENE));
        views.setOnClickPendingIntent(R.id.navScenePrevious, getPendingSelfIntent(context, PREV_SCENE));

        try {
            setRemoteAdapter(context, views);
        } catch (URISyntaxException e) {
            e.printStackTrace();
        }
        appWidgetManager.updateAppWidget(appWidgetId, views);
    }

    protected PendingIntent getPendingSelfIntent(Context context, String action) {
        Intent intent = new Intent(context, getClass());
        intent.setAction(action);
        return PendingIntent.getBroadcast(context, 0, intent, 0);
    }

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        // There may be multiple widgets active, so update all of them
        for (int appWidgetId : appWidgetIds) {
            updateAppWidget(context, appWidgetManager, appWidgetId);
        }
        super.onUpdate(context, appWidgetManager, appWidgetIds);
    }

    @Override
    public void onEnabled(Context context) {
        // Enter relevant functionality for when the first widget is created
    }

    @Override
    public void onDisabled(Context context) {
        // Enter relevant functionality for when the last widget is disabled
    }

    @Override
    public void onReceive(Context context, Intent intent)
    {
        super.onReceive(context, intent);
        if (NEXT_SCENE.equals(intent.getAction())) {

        }else if (PREV_SCENE.equals(intent.getAction())){
             // PROBLEM
        }
    }

    private static void setRemoteAdapter(Context context, @NonNull final RemoteViews views) throws URISyntaxException {
        Intent serviceIntent =  new Intent(context, WidgetService.class);
        views.setRemoteAdapter(R.id.scenarioAdapterViewFlipper,serviceIntent);
    }


}

通过按钮（R.id.navSceneNext / navScenePrevious）触发可以正常工作，但是从现在开始，我不知道如何触发翻转AdapterViewFlipper，因为我无法从onReceived方法内部影响它，至少到目前为止据我所知。

有人可以提出解决方案吗？

小部件中的AndroidViewFlipper导航

0 个答案: