android用服务service与广播broadcastreceiver创建开机启动服务

    原理：注册广播接受者收到开机启动信息，然后启动服务，服务做操作（例如从后台接收消息后显示在任务栏上面去，从而达到消息推送的效果）
    1.创建广播接受者
class="html" name="code" snippet_file_name="blog_20160312_3_9845105" code_snippet_id="1607321">public class BootBroadcastReceiver extends BroadcastReceiver {
@Override public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context,ServiceCrack.class);
context.startService(service); Log.d("test","开机自启动服务"); }
}

2.创建服务
class="html" name="code" snippet_file_name="blog_20160312_9_8809520" code_snippet_id="1607321">public class ServiceCrack extends Service {
    @Nullable @Override public IBinder onBind(Intent intent) {
    return null;
    }
    @Override public void onCreate() {
    super.onCreate();
    new Thread(){
    @Override public void run() {
    super.run();
    int i = 1;
    while(true){
    Log.d("test","收到消息"+i);
    i++;
    try {
    sleep(5000);
    } catch (InterruptedException e) {
    e.printStackTrace();
    }
    }
    }
    }.start(); }}

    3.在xml文件中添加权限以及描述广播和服务
    
class="html" name="code"> android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

                    android:name=".service.ServiceCrack"
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name" >
        

        android:name=".broadcast.BootBroadcastReceiver" >
            
                android:name="android.intent.action.BOOT_COMPLETED" />