android 服务

新建服务类

public class TimeService extends Service{    //监听时间变化的 这个receiver只能动态创建    private TimeTickReceiver mTickReceiver;    private IntentFilter mFilter;    @Override    public IBinder onBind(Intent intent) {        return null;    }    @Override    public void onCreate() {        Log.d("flag--","onCreate(TimeService.java:27)-->>");        super.onCreate();        mFilter = new IntentFilter();        mFilter.addAction(Intent.ACTION_TIME_TICK); //每分钟变化的action        mFilter.addAction(Intent.ACTION_TIME_CHANGED); //设置了系统时间的action        mTickReceiver = new TimeTickReceiver();        registerReceiver(mTickReceiver, mFilter);    }    @Override    public int onStartCommand(Intent intent, int flags, int startId) {        Log.d("flag--","onStartCommand(TimeService.java:37)-->>"+"启动了服务");        return Service.START_STICKY;    }    @Override    public void onDestroy() {        super.onDestroy();        unregisterReceiver(mTickReceiver);    }}

新建Reveicer

开启时启动服务

public class BootedReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        Log.d("flag--","onReceive(BootedReceiver.java:18)-->>"+"startService");        context.startService(new Intent(context, TimeService.class));    }}

public class TimeTickReceiver extends BroadcastReceiver{    private boolean flag;    @Override    public void onReceive(Context context, Intent intent) {        Log.d("flag--","onReceive(TimeTickReceiver.java:17)-->>"+"时间变了" + intent.getAction());        if (intent.getAction().equals(Intent.ACTION_TIME_TICK)) {            //每过一分钟 触发            Log.d("flag--", "onReceive(TimeTickReceiver.java:21)-->>" + "time change");        } else {            /*             * 系统bug??             * android.intent.action.TIME_SET  当调整系统时间后 这个action会收到两次             */            if (flag) {                try {                    /*  do some thing */                } catch (Exception e) {                    e.printStackTrace();                }                flag = false; //第二次置false            } else {                flag = true; //第一次置true            }        }    }}

在manifest文件中添加

        <!--开机时自动启动-->        <receiver android:name="com.halfopen.h.cislsign.receiver.BootedReceiver">            <intent-filter>                <action android:name="android.intent.action.BOOT_COMPLETED"/>            </intent-filter>        </receiver>        <!--声明服务-->        <service android:name=".service.TimeService"/>

添加广播权限

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

最终效果

可从看到服务已经启动

出现在开机启动项里面