android service exported attribute?

Question

I am quite new to the android platform. I want to export my service to be publicly used. I find something on developer doc

android:exported Whether or not

Answer 1

You can will find that the sample applications SampleSyncAdapter, CubeLiveWallpaper, and VoiceRecognitionService (new in level 8) all export services for public use. You can look through your sdk's samples/ directory. Eclipse can create a new project using the existing samples (from the File/New/Android Project dialog).

Answer 2

The purpose of the "exported" is to let other apps have access to a service.

For example, \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>

The source code that matches with these services is then found in your samples folder at

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

and

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

An example of using this might be located at...

  \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