Question

我必须在按钮点击时删除/添加Android小部件中的布局（按钮位于小部件上）。

这是我的代码

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        // There may be multiple widgets active, so update all of them
        final int N = appWidgetIds.length;
        for (int i = 0; i < N; i++) {
            updateAppWidget(context, appWidgetManager, appWidgetIds[i]);
        }
    }

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

        if(intent.getAction().equals(ACTION_HIDE_BALANCE)) {
            // CODE TO CHANGE WIDGET UI

        }
    }

    static void updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {

        CharSequence widgetText = context.getString(R.string.appwidget_text);
        // Construct the RemoteViews object
        RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);

        Intent intent;
        intent = new Intent(ACTION_HIDE_BALANCE);
        PendingIntent hideBalancePendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        views.setOnClickPendingIntent(R.id.action_wallet_hide_balance, hideBalancePendingIntent);

        intent = new Intent(ACTION_SHOW_BALANCE);
        PendingIntent showBalancePendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        views.setOnClickPendingIntent(R.id.action_wallet_show_balance, showBalancePendingIntent);


        // Instruct the widget manager to update the widget
        appWidgetManager.updateAppWidget(appWidgetId, views);
    }
}

在互联网上搜索我发现PendingIntent技术具有onClickListener效果（已在我的清单中添加了意图过滤器）。

问题在于onRecieve（）回调：如何更改小部件UI？我必须删除像rootView.removeView（layoutView）;

中的布局

提前致谢。

Answer 1

好的，我发现这很简单，就像使用标准视图一样。

@Override
public void onReceive(Context context, Intent intent) {
    AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
    int appWidgetId = 0;

    if(intent.getAction().equals(ACTION_HIDE_BALANCE)) {
        RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.root_view);
        views.removeAllViews(R.id.view_to_remove);
        appWidgetId = intent.getExtras().getInt(AppWidgetManager.EXTRA_APPWIDGET_ID);
        appWidgetManager.updateAppWidget(appWidgetId, views);
    }

    super.onReceive(context, intent);
}

很明显，不得不将AppWidgetManager.EXTRA_APPWIDGET_ID额外附加到onClick PendingIntent

添加 - 在android小部件中删除运行时的视图

1 个答案: