AppWidgetProvider 问题

问题描述

我有一个 AppWidgetProvider，我需要在第一次将小部件添加到主屏幕时进行一些初始化.我知道这样做的地方是 onEnabled(Context context) 方法.我的问题是这个方法永远不会被调用(据我在 logcat 中看到的).

I have an AppWidgetProvider, and I need to do some initialization when a widget is first added to the home screen. I understand that the place to do it is in the onEnabled(Context context) method. My Problem is that this method is never called (As far as I can see in the logcat).

这是我的代码:

public class MyMonitorWidget extends AppWidgetProvider{

    @Override
    public void onEnabled(Context context) {
        super.onEnabled(context);

        Log.v("LOG", "Widget onEnabled");
        Intent intentToFire = new Intent(UpdateAlarmReceiver.ACTION_UPDATE_ALARM); 
        context.sendBroadcast(intentToFire);
    } 
...
}

还有我的 appwidget-provider xml:

And my appwidget-provider xml:

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:initialLayout="@layout/widget_layout"
  android:minWidth="146dp" 
  android:minHeight="74dp"
  android:label="Monitor Widget"
  />

在清单中:

<receiver android:name="MyMonitorWidget" android:label="Monitor Widget">
        <intent-filter>
            <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
        </intent-filter>
        <intent-filter>
        <action android:name="com.android.myMonitor.ACTION_NOTIFY_WIDGET"/>
        </intent-filter>
        <meta-data android:name="android.appwidget.provider" 
        android:resource="@xml/monitor_widget_info"/>
    </receiver>

你认为是什么问题?

推荐答案

您需要添加 android.appwidget.action.APPWIDGET_ENABLED 作为另一个动作:

You need to add android.appwidget.action.APPWIDGET_ENABLED as another action:

    <intent-filter>
        <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
        <action android:name="android.appwidget.action.APPWIDGET_ENABLED" />
    </intent-filter>

否则，您将不会收到触发 onEnabled() 的广播.

Without that, you will not receive the broadcast that triggers onEnabled().

这篇关于AppWidgetProvider 问题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跟版网！