Android-如何从Activity中传递参数到Service中？

Question

我在bind 一个service的时候，我想传递一个参数过去，可是发现调试的结果是Null。代码如下：
Activity:

istenLocationService mService;
@Override
public void onCreate(Bundle savedInstanceState) {
        ...
        Intent intent = new Intent(this, ListenLocationService.class);
        intent.putExtra("From", "Main");
        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
        ...
}

private ServiceConnection mConnection = new ServiceConnection() {

        public void onServiceConnected(ComponentName className,
                IBinder service) {
            LocalBinder binder = (LocalBinder) service;
            mService = binder.getService();         
        }

        public void onServiceDisconnected(ComponentName arg0) {
        }
    };

Answer 1

最后我通过接口的方式解决了。

声明一个接口，我会在activity中调用这些函数都在这里列出来

 public interface ILocationService {
public void StartListenLocation(Location location);
}

在Binder中实现这个接口

 public class MyBinder extends Binder implements ILocationService {
... ...

public void StartListenLocation(Location location) {
// implement your method properly
}

... ...
}

然后，在activity中，我直接就调用这个函数，了，参数就可以传递了.