Android 第一个程序

package pw.pw11.cxc;

import .AppCompatActivity;
import android.os.Bundle;
import .MediaPlayer;
import android.view.MotionEvent;

public class MainActivity extends AppCompatActivity{
    private MediaPlayer m;

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

    public void Load_Sounds(){
        m = MediaPlayer.create(this,R.raw.a);
    }
    @Override
    public boolean onTouchEvent(MotionEvent event){
        super.onTouchEvent(event);
        switch (event.getAction()){
            case MotionEvent.ACTION_DOWN:
                m.start();
            case MotionEvent.ACTION_UP:
                m.stop();
        }
        return true;
    }
}