android服务导出属性？

Question

我是 android 平台的新手。我想导出我的服务以供公众使用。我在开发者文档上找到了一些东西

android:exportedWhether or not components of other applications can invoke the service or interact with it — "true" if they can, and "false" if not. When the value is "false", only components of the same application or applications with the same user ID can start the service or bind to it.

但是我不明白任何人都可以向我展示如何使用它的简短示例吗？

Answer 1

“导出”的目的是让其他应用程序可以访问服务。

例如\android-sdk-windows\samples\android-8\SampleSyncAdapter\AndroidManifest.xml

    <service
        android:name=".authenticator.AuthenticationService"
        android:exported="true">
        <intent-filter>
            <action
                android:name="android.accounts.AccountAuthenticator" />
        </intent-filter>
        <meta-data
            android:name="android.accounts.AccountAuthenticator"
            android:resource="@xml/authenticator" />
    </service>
    <service
        android:name=".syncadapter.SyncService"
        android:exported="true">
        <intent-filter>
            <action
                android:name="android.content.SyncAdapter" />
        </intent-filter>
        <meta-data
            android:name="android.content.SyncAdapter"
            android:resource="@xml/syncadapter" />
        <meta-data
            android:name="android.provider.CONTACTS_STRUCTURE"
            android:resource="@xml/contacts" />
    </service>

然后在您的示例文件夹中找到与这些服务匹配的源代码

\android-sdk-windows\samples\android-8\SampleSyncAdapter\src\com\example\android\samplesync\authenticator\AuthenticationService.java

和

\android-sdk-windows\samples\android-8\SampleSyncAdapter\src\com\example\android\samplesync\syncadapter\SyncService.java

使用它的示例可能位于...

  \android-sdk-windows\samples\android-8\SampleSyncAdapter\src\com\example\android\samplesync\client\NetworkUtilities.java (3 hits)
    Line 63:         "https://samplesyncadapter.appspot.com";
    Line 238:             // Succesfully connected to the samplesyncadapter server and
    Line 287:             // Succesfully connected to the samplesyncadapter server and