1.开机启动服务
我们经常会有这样的应用场合，比如消息推送服务，需要实现开机启动的功能。要实现这个功能，我们就可以订阅系统“启动完成”这条广播，接收到这条广播后我们就可以启动自己的服务了。我们来看一下BootCompleteReceiver和MsgPushService的具体实现：
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
public class BootCompleteReceiver extends BroadcastReceiver {
private static final String TAG = "BootCompleteReceiver";
@Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, MsgPushService.class);
context.startService(service);
Log.i(TAG, "Boot Complete. Starting MsgPushService...");
}
}
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
public class MsgPushService extends Service {
private static final String TAG = "MsgPushService";
@Override
public void onCreate() {
super.onCreate();
Log.i(TAG, "onCreate called.");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, "onStartCommand called.");
return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
然后我们需要在AndroidManifest.xml中配置相关信息：
<!-- 开机广播接受者 -->
<receiver android:name=".BootCompleteReceiver">
<intent-filter>
<!-- 注册开机广播地址-->
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
<!-- 消息推送服务 -->
<service android:name=".MsgPushService"/>
