Android 后台Service : 向服务器发送心跳包

<service            android:name=".demo.HeartbeatService"            android:label="QServer"            android:persistent="true" >            <intent-filter>                <action android:name="HeartbeatService" />            </intent-filter>        </service>

<uses-permission android:name="android.permission.GET_TASKS" />