问题描述

我有一个非常简单的小部件应用程序，它由一个带有背景的 LinearLayout 和一个 ImageButton 组成.

I have a very simple widget application which consists of a LinearLayout with a background and an ImageButton.

在 AppWidgetProvider onUpdate() 方法中，我注册了单击按钮以广播意图.当小部件第一次加载时，一切都运行良好并且点击被捕获.当屏幕旋转时出现问题，即使屏幕旋转回来也不会再次捕获点击.

In the AppWidgetProvider onUpdate() method, I register the click of the button to broadcast an intent. When the widget first loads, everything runs fine and the click is captured. The problem occurs when the screen is rotated, and the click is never captured again even if the screen is rotated back.

屏幕旋转时我需要做什么才能重新注册点击?

What do I have to do to re-register the click when the screen rotates?

下面是我正在使用的一些代码段.

below is some segments of code I am using.

AppWidgetProvider

AppWidgetProvider

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

    if(intent.getAction().equals("test.CLICK"))
    {
        CallTestMethod(context);
    }
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
    int[] appWidgetIds) {
    final int N = appWidgetIds.length;

    // Perform this loop procedure for each App Widget that belongs to this provider
    for (int i=0; i<N; i++) {
        int appWidgetId = appWidgetIds[i];

        RemoteViews views=new RemoteViews(context.getPackageName(), R.layout.widget);            
        Intent clickintent=new Intent("test.CLICK");
        PendingIntent pendingIntentClick=PendingIntent.getBroadcast(context, 0, clickintent, PendingIntent.FLAG_UPDATE_CURRENT);
        views.setOnClickPendingIntent(R.id.change_mode, pendingIntentClick);
        SetInitialLayout(context);
        appWidgetManager.updateAppWidget(appWidgetId, views);
    }
    super.onUpdate(context, appWidgetManager, appWidgetIds);
}

清单

<receiver android:name=".Widget" android:label="@string/widget_name">
        <intent-filter>
            <action android:name="android.appwidget.action.ACTION_APPWIDGET_CONFIGURE" />
            <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            <action android:name="test.CLICK" />
        </intent-filter>
        <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_mode_switcher" />            
    </receiver>

布局

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/widget_layout"
    android:layout_width="140dip"
    android:layout_height="140dip"
    android:scaleType="fitCenter"
    android:orientation="vertical"
    android:background="@drawable/background">
    <ImageButton
        android:id="@+id/change_mode"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:scaleType="fitCenter"
        android:orientation="vertical"
        android:src="@drawable/none_selected"
        android:background="@null"
        android:clickable="true" />
</LinearLayout>

感谢大家的帮助！

推荐答案

这对我有帮助:Android小部件ImageButton在屏幕旋转时丢失图像

简而言之，您必须在每次调用 awm.updateAppWidget 之前注册点击次数 (views.setOnClickPendingIntent)

In short, you have to register the clicks (views.setOnClickPendingIntent) before EVERY call to awm.updateAppWidget

这篇关于屏幕旋转时，小部件上的按钮单击丢失的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！