Launcher小部件使用自定义View (仅限Launcher内部的小部件)

桌面小部件使用自定义的View方法

1. AppWidgetProvider.java

修改代码AppWidgetProviderInfo.java

修改CLS_CUSTOM_WIDGET_PREFIX为Launcher内部小部件的包名前缀就可以。比如我的小部件在com.demo包里面。

public class LauncherAppWidgetProviderInfo extends AppWidgetProviderInfo { 
public static final String CLS_CUSTOM_WIDGET_PREFIX = "com.demo";    //"#custom-widget-";
...
}

2. 桌面小部件实现demo

2.1  com.demo.MyWidgetProvider

public class MyWidgetProvider extends AppWidgetProvider {
}

2.2 res/layout/my_widget_view.xml

<?xml version="1.0" encoding="utf-8"?>
<com.demo.MyWidgetView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:orientation="vertical">

    </LinearLayout>
</com.demo.MyWidgetView>

2.3 res/xm/widget_info.xml

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:initialLayout="@layout/my_widget_view"
    android:minHeight="@dimen/widget_min_height"
    android:minWidth="@dimen/widget_min_width"
    android:previewImage="@drawable/ic_app_widget"
    android:resizeMode="none"
    android:updatePeriodMillis="86400000"></appwidget-provider>

2.4 AndroidManifest.xml

    <application>
      
        <receiver
            android:name="com.demo.MyWidgetProvider"
            android:label="@string/torch_widget_name">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/my_widget_info" />
        </receiver>
    </application>