1.startService

1.代码

开始服务：

Intent intent = new Intent(MainActivity.this, TestService.class);
                startService(intent);

停止服务：

stopService(new Intent(MainActivity.this,TestService.class));

服务代码：

public class TestService extends Service {
    private static final String TAG = "TestService";
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Log.d(TAG, "onBind: ");
        return null;
    }

    @Override
    public void onCreate() {
        Log.d(TAG, "onCreate: ");
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG, "onStartCommand: ");
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        Log.d(TAG, "onDestroy: ");
        super.onDestroy();
    }

    @Override
    public boolean onUnbind(Intent intent) {
        Log.d(TAG, "onUnbind: ");
        return super.onUnbind(intent);
    }

    @Override
    public void onRebind(Intent intent) {
        Log.d(TAG, "onRebind: ");
        super.onRebind(intent);
    }
    
}

声明服务：

<service android:name=".TestService"/>

1.生命周期

开始---->停止