測试Service

<strong><span style="font-size:18px;">自己定义Service:</span></strong>
/**
 * Created by liuwang on 15-3-15.
 */
public class MyService extends Service {

    private MBinder mBinder = new MBinder();

    public MyService() {
        super();
        System.out.println("MyService---");
    }

    @Override
    public IBinder onBind(Intent intent) {
        System.out.println("onBind---");
        return mBinder;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        System.out.println("onCreate---");
    }

    @Override
    public void onStart(Intent intent, int startId) {
        super.onStart(intent, startId);
        System.out.println("onStart---");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        System.out.println("onStartCommand---");
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public boolean onUnbind(Intent intent) {
        System.out.println("onUnbind---");
        return super.onUnbind(intent);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        System.out.println("onDestroy---");
    }



    @Override
    public void onRebind(Intent intent) {
        super.onRebind(intent);
        System.out.println("onRebind---");
    }

    @Override
    public void onTaskRemoved(Intent rootIntent) {
        super.onTaskRemoved(rootIntent);
        System.out.println("onTaskRemoved---");
    }

    @Override
    protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
        super.dump(fd, writer, args);
        System.out.println("dump---");
    }

    @Override
    public void onTrimMemory(int level) {
        super.onTrimMemory(level);
        System.out.println("onTrimMemory---");
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
        System.out.println("onLowMemory---");
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        System.out.println("onConfigurationChanged---");
    }

    class MBinder extends Binder {

    }

}

Activity:

public class MainActivity extends ActionBarActivity implements View.OnClickListener {

    private Button start;
    private Button finish;
    private Button onbind;
    private Button unbind;
    private Intent intent;
    private ServiceConnection sc;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        start = (Button) findViewById(R.id.start);
        finish = (Button) findViewById(R.id.finish);
        onbind = (Button) findViewById(R.id.onbind);
        unbind = (Button) findViewById(R.id.unbind);

        start.setOnClickListener(this);
        finish.setOnClickListener(this);
        onbind.setOnClickListener(this);
        unbind.setOnClickListener(this);

        intent = new Intent();
        intent.setClass(this,MyService.class);

        sc = new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                System.out.println("连接成功");
            }

            @Override
            public void onServiceDisconnected(ComponentName name) {
                System.out.println("连接失败");
            }
        };

    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.start:
                startService(intent);
                break;
            case R.id.finish:
                stopService(intent);
                break;
            case R.id.onbind:
                bindService(intent,sc,BIND_AUTO_CREATE);
                break;
            case R.id.unbind:
                unbindService(sc);

                break;
        }
    }
}

測试1：

当点击启动Service时的流程：

在点击绑定：

点击解绑：

最后点击关闭服务：

測试2：

点击绑定：

点击启动：

点击关闭服务：

无输出。

点击解除绑定：

总结：

当我进行启动服务和绑定服务后，假设仅仅是关闭服务或解绑服务并不会将service杀死。

当我进行启动服务后在绑定。并不会反复创建service。

先启动在绑定的流程：构造方法->oncreate->onstartcommand->onstart->onbind->onserviceconnection

先绑定service在启动service流程：构造方法->oncreate->onbind->onserviceconnection->onstartcommand->onstart

当我反复启动service仅仅会反复调用startcommand和start方法，不会反复调用oncreate

当我进行多次绑定时并不会反复创建多个service

当我绑定service而且退出activity不解绑service时，service会自己主动被关闭，而且logcat会报错

我能够利用绑定service后启动service然后退出activity解绑service，这样service还不会被kill。再次进入activity我们能够通过关闭service使service关闭。