小编Jon*_*tam的帖子

所以我刚为我的应用程序实现了一个小部件.它通过我的数据从数据库中获取数据ContentProvider.我在清单中定义了自己的读/写权限,说明我使用它们(似乎没有什么区别),并在内容提供程序中要求它们:

<!-- Define my permissions for the provider -->
<permission
    android:name="com.nononsenseapps.notepad.permissions.read"
    android:description="@string/permission_read_desc"
    android:label="@string/permission_read_label"
    android:permissionGroup="android.permission-group.PERSONAL_INFO"
    android:protectionLevel="normal" />
<permission
    android:name="com.nononsenseapps.notepad.permissions.write"
    android:description="@string/permission_write_desc"
    android:label="@string/permission_write_label"
    android:permissionGroup="android.permission-group.PERSONAL_INFO"
    android:protectionLevel="normal" />
......
<uses-permission android:name="com.nononsenseapps.notepad.permissions.read" />
<uses-permission android:name="com.nononsenseapps.notepad.permissions.write" />
<uses-permission android:name="android.permission.BIND_REMOTEVIEWS" />
......
<provider
        android:name=".NotePadProvider"
        android:authorities="com.nononsenseapps.NotePad"
        android:enabled="true"
        android:exported="true"
        android:label="@string/app_name"
        android:readPermission="com.nononsenseapps.notepad.permissions.read"
        android:syncable="true"
        android:writePermission="com.nononsenseapps.notepad.permissions.write" >
        <grant-uri-permission android:pathPattern=".*" />
    </provider>

我通过a更新我的小部件Service(根据小部件教程):

    <!-- List Widget -->
    <receiver android:name="com.nononsenseapps.notepad.widget.ListWidgetProvider" >
        <intent-filter>
            <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
        </intent-filter>

        <meta-data
            android:name="android.appwidget.provider"
            android:resource="@xml/listwidgetinfo" />
    </receiver>

    <service
        android:name="com.nononsenseapps.notepad.widget.ListWidgetService"
        android:exported="false"
        android:permission="android.permission.BIND_REMOTEVIEWS" />

而这Service反过来做到这一点(包括一堆代码):

/**
 * …