效果图:
[img]http://dl.iteye.com/upload/attachment/293117/2b07b92b-9230-375d-ac31-4706c0835abb.png[/img]
package com.example;import android.app.Activity;import android.os.Bundle;import android.widget.ImageButton;import android.widget.Toast;import android.view.View;import android.view.MotionEvent;import android.media.MediaPlayer;/** * @author: ZhangFL */public class Piano extends Activity { private ImageButton imageButton_white1; private ImageButton imageButton_white2; private ImageButton imageButton_white3; private ImageButton imageButton_white4; private ImageButton imageButton_white5; private ImageButton imageButton_white6; private ImageButton imageButton_white7; private ImageButton imageButton_white8; private ImageButton imageButton_black1; private ImageButton imageButton_black2; private ImageButton imageButton_black3; private ImageButton imageButton_black4; private ImageButton imageButton_black5; private MediaPlayer mediaPlayer01; @Override protected void onCreate(Bundle bundle) { super.onCreate(bundle); setContentView(R.layout.main); mediaPlayer01 = new MediaPlayer();// mediaPlayer01 = MediaPlayer.create(Piano.this, R.raw.white1); imageButton_white1 = (ImageButton) findViewById(R.id.white1); imageButton_white2 = (ImageButton) findViewById(R.id.white2); imageButton_white3 = (ImageButton) findViewById(R.id.white3); imageButton_white4 = (ImageButton) findViewById(R.id.white4); imageButton_white5 = (ImageButton) findViewById(R.id.white5); imageButton_white6 = (ImageButton) findViewById(R.id.white6); imageButton_white7 = (ImageButton) findViewById(R.id.white7); imageButton_white8 = (ImageButton) findViewById(R.id.white8); imageButton_black1 = (ImageButton) findViewById(R.id.black1); imageButton_black2 = (ImageButton) findViewById(R.id.black2); imageButton_black3 = (ImageButton) findViewById(R.id.black3); imageButton_black4 = (ImageButton) findViewById(R.id.black4); imageButton_black5 = (ImageButton) findViewById(R.id.black5); imageButton_white1.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white1); imageButton_white1.setImageResource(R.drawable.whiteback1); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white1.setImageResource(R.drawable.white1); } return false; } }); imageButton_white2.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white2); imageButton_white2.setImageResource(R.drawable.whiteback2); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white2.setImageResource(R.drawable.white2); } return false; } });// imageButton_white3.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white3); imageButton_white3.setImageResource(R.drawable.whiteback3); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white3.setImageResource(R.drawable.white3); } return false; } }); imageButton_white4.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white4); imageButton_white4.setImageResource(R.drawable.whiteback4); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white4.setImageResource(R.drawable.white4); } return false; } }); imageButton_white5.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white5); imageButton_white5.setImageResource(R.drawable.whiteback5); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white5.setImageResource(R.drawable.white5); } return false; } }); imageButton_white6.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white6); imageButton_white6.setImageResource(R.drawable.whiteback6); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white6.setImageResource(R.drawable.white6); } return false; } }); imageButton_white7.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white7); imageButton_white7.setImageResource(R.drawable.whiteback7); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white7.setImageResource(R.drawable.white7); } return false; } }); imageButton_white8.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.white8); imageButton_white8.setImageResource(R.drawable.whiteback8); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_white8.setImageResource(R.drawable.white8); } return false; } }); imageButton_black1.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.black1); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_black1.setImageResource(R.drawable.black1); } return false; } }); imageButton_black2.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.black2); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_black2.setImageResource(R.drawable.black2); } return false; } }); imageButton_black3.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.black3); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_black3.setImageResource(R.drawable.black3); } return false; } }); imageButton_black4.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.black4); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_black4.setImageResource(R.drawable.black4); } return false; } }); imageButton_black5.setOnTouchListener(new View.OnTouchListener() { public boolean onTouch(View view, MotionEvent motionEvent) { if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { play(R.raw.black5); } if (motionEvent.getAction() == MotionEvent.ACTION_UP) { imageButton_black5.setImageResource(R.drawable.black5); } return false; } });//// mediaPlayer01.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { public void onCompletion(MediaPlayer arg0) { mediaPlayer01.release(); mediaPlayer01 = null; Toast.makeText(Piano.this, "资源释放了!", Toast.LENGTH_SHORT).show(); } }); mediaPlayer01.setOnErrorListener(new MediaPlayer.OnErrorListener() { public boolean onError(MediaPlayer arg0, int i, int i1) { try { mediaPlayer01.release(); Toast.makeText(Piano.this, "发生错误了!", Toast.LENGTH_SHORT).show(); } catch (Exception e) { e.printStackTrace(); } return false; } }); } //------------------------------------------------------------------------------------- private void play(int resource) { try { mediaPlayer01.release(); mediaPlayer01 = MediaPlayer.create(Piano.this, resource); mediaPlayer01.start(); } catch (Exception e) { Toast.makeText(Piano.this, "发生错误了:" + e.getMessage(), Toast.LENGTH_SHORT).show(); } } @Override protected void onDestroy() { super.onDestroy(); if (mediaPlayer01 != null) { mediaPlayer01.release(); mediaPlayer01 = null; } }} 声音文件我附上了:)