<&#63;xML version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.COM/apk/res/android">    <ITem android:drawable="@drawable/button_Pressed" android:state_PRessed="true"></item>  <item android:drawable="@drawable/button"></item>   </selector>

 <?xml version="1.0" encoding="utf-8"?> <Shape xmlns:android="http://schemas.android.com/apk/res/android" >    <corners  android:bottomLeftRadius="10dp"  android:bottomRightRadius="10dp" >  </corners>    <stroke  android:width="2dp"  android:color="#605C59" />    <gradient  android:angle="270"  android:endColor="#FFFFFF"  android:startColor="#F5F5F5" />   </shaPE>

 <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" >    <solid android:color="#A4A4A4" />    <corners  android:bottomLeftRadius="10dp"  android:bottomRightRadius="10dp" >  </corners>    <stroke  android:width="2dp"  android:color="#605C59" />   </shape>

 package com.example.weixu.view;   /**  * 音乐播放帮助类  */   import java.util.HashMap; import android.content.Context; import android.media.AudioManager; import android.media.SoundPool;   import com.example.weixu.playpanio.R;   public class PanioMusic {  // 资源文件  int Music[] = {R.raw.do1, R.raw.re2, R.raw.mi3, R.raw.fa4, R.raw.sol5,  R.raw.la6, R.raw.si7,};  SoundPool soundPool;  HashMap<Integer, Integer> soundPoolMap;    public PanioMusic(Context context) {  soundPool = new SoundPool(2, AudioManager.STREAM_MUSIC, 100);  soundPoolMap = new HashMap<Integer, Integer>();  for (int i = 0; i < Music.length; i++) {  soundPoolMap.put(i, soundPool.load(context, Music[i], 1));  }  }    public int soundPlay(int no) {  return soundPool.play(soundPoolMap.get(no), 100, 100, 1, 0, 1.0f);  }    public int soundOver() {  return soundPool.play(soundPoolMap.get(1), 100, 100, 1, 0, 1.0f);  }    @override  protected void finalize() throws Throwable {  soundPool.release();  super.finalize();  } }

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:id="@+id/llparent"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical"  tools:context=".MainActivity" >    <LinearLayout  android:id="@+id/llKeys"  android:layout_width="match_parent"  android:layout_height="0dp"  android:layout_weight="5"  android:orientation="horizontal"  android:padding="10dp" >    <Button  android:id="@+id/BTPanioOne"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="1"  android:background="@drawable/button"  android:text="1" />    <Button  android:id="@+id/btPanioTwo"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="1"  android:background="@drawable/button"  android:text="2" />    <Button  android:id="@+id/btPanioThree"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="1"  android:background="@drawable/button"  android:text="3" />    <Button  android:id="@+id/btPanioFour"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="1"  android:background="@drawable/button"  android:text="4" />    <Button  android:id="@+id/btPanioFive"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="1"  android:background="@drawable/button"  android:text="5" />    <Button  android:id="@+id/btPanioSix"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="1"  android:background="@drawable/button"  android:text="6" />    <Button  android:id="@+id/btPanioSeven"  android:layout_width="0dp"  android:layout_height="match_parent"  android:layout_weight="1"  android:background="@drawable/button"  android:text="7" />  </LinearLayout>   </LinearLayout>

 package com.example.weixu.playpanio;   import android.os.Bundle; import android.app.Activity; import android.util.LOG; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.Button;   import com.example.weixu.view.PanioMusic;   public class MainActivity extends Activity {  private Button button[];// 按钮数组  private PanioMusic utils;// 工具类  private View parent;// 父视图  private int buttonId[];// 按钮id  private boolean havePlayed[];// 是否已经播放了声音，当手指在同一个按钮内滑动，且已经发声，就为true  private View keys;// 按钮们所在的视图  private int pressedkey[];    @Override  protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);    init();  parent = (View) findViewById(R.id.llparent);  parent.setClickable(true);    parent.setOnTouchListener(new OnTouchListener() {    @Override  public boolean onTouch(View v, MotionEvent event) {  int temp;  int tempIndex;  int pointercount;  pointercount = event.getPointerCount();  for (int count = 0; count < pointercount; count++) {   boolean moveflag = false;// 标记是否是在按键上移动   temp = isInAnyScale(event.getX(count), event.getY(count),   button);   if (temp != -1) {// 事件对应的是当前点   switch (event.getActionMasked()) {   case MotionEvent.ACTION_DOWN:   // // 单独一根手指或最先按下的那个   // pressedkey = temp;   case MotionEvent.ACTION_POINTER_DOWN:   Log.i("--", "count" + count);   pressedkey[count] = temp;   if (!havePlayed[temp]) {// 在某个按键范围内    button[temp]    .setBackgroundResource(R.drawable.button_pressed);    // 播放音阶    utils.soundPlay(temp);    Log.i("--", "sound" + temp);    havePlayed[temp] = true;   }   break;   case MotionEvent.ACTION_MOVE:   temp = pressedkey[count];   for (int i = temp + 1; i >= temp - 1; i--) {    // 当在两端的按钮时，会有一边越界    if (i < 0 || i >= button.length) {    continue;    }    if (isInScale(event.getX(count),    event.getY(count), button[i])) {// 在某个按键内    moveflag = true;    if (i != temp) {// 在相邻按键内    boolean laststill = false;    boolean nextstill = false;    // 假设手指已经从上一个位置抬起，但是没有真的抬起，所以不移位    pressedkey[count] = -1;    for (int j = 0; j < pointercount; j++) {    if (pressedkey[j] == temp) {     laststill = true;    }    if (pressedkey[j] == i) {     nextstill = true;    }    }      if (!nextstill) {// 移入的按键没有按下    // 设置当前按键    button[i]     .setBackgroundResource(R.drawable.button_pressed);    // 发音    utils.soundPlay(i);    havePlayed[i] = true;    }      pressedkey[count] = i;      if (!laststill) {// 没有手指按在上面    // 设置上一个按键    button[temp]     .setBackgroundResource(R.drawable.button);    havePlayed[temp] = false;    }      break;    }    }   }   break;   case MotionEvent.ACTION_UP:   case MotionEvent.ACTION_POINTER_UP:   // 事件与点对应   tempIndex = event.getActionIndex();   if (tempIndex == count) {    Log.i("--", "index" + tempIndex);    boolean still = false;    // 当前点已抬起    for (int t = count; t < 5; t++) {    if (t != 4) {    if (pressedkey[t + 1] >= 0) {    pressedkey[t] = pressedkey[t + 1];    } else {    pressedkey[t] = -1;    }    } else {    pressedkey[t] = -1;    }      }    for (int i = 0; i < pressedkey.length; i++) {// 是否还有其他点    if (pressedkey[i] == temp) {    still = true;    break;    }    }    if (!still) {// 已经没有手指按在该键上    button[temp]    .setBackgroundResource(R.drawable.button);    havePlayed[temp] = false;    Log.i("--", "button" + temp + "up");    }    break;   }   }   }   //   if (event.getActionMasked() == MotionEvent.ACTION_MOVE   && !moveflag) {   if (pressedkey[count] != -1) {   button[pressedkey[count]]    .setBackgroundResource(R.drawable.button);   havePlayed[pressedkey[count]] = false;   }   }  }  return false;  }  });    keys = (View) findViewById(R.id.llKeys);  }    private void init() {  // 新建工具类  utils = new PanioMusic(getApplicationContext());    // 按钮资源Id  buttonId = new int[7];  buttonId[0] = R.id.btPanioOne;  buttonId[1] = R.id.btPanioTwo;  buttonId[2] = R.id.btPanioThree;  buttonId[3] = R.id.btPanioFour;  buttonId[4] = R.id.btPanioFive;  buttonId[5] = R.id.btPanioSix;  buttonId[6] = R.id.btPanioSeven;    button = new Button[7];  havePlayed = new boolean[7];    // 获取按钮对象  for (int i = 0; i < button.length; i++) {  button[i] = (Button) findViewById(buttonId[i]);  button[i].setClickable(false);  havePlayed[i] = false;  }    pressedkey = new int[5];  for (int j = 0; j < pressedkey.length; j++) {  pressedkey[j] = -1;  }    }    /**  * 判断某个点是否在某个按钮的范围内  *  * @param x 横坐标  * @param y 纵坐标  * @param button 按钮对象  * @return 在：true；不在：false  */  private boolean isInScale(float x, float y, Button button) {  // keys.getTop()是获取按钮所在父视图相对其父视图的右上角纵坐标    if (x > button.getLeft() && x < button.getRight()  && y > button.getTop() + keys.getTop()  && y < button.getBottom() + keys.getTop()) {  return true;  } else {  return false;  }  }    /**  * 判断某个点是否在一个按钮集合中的某个按钮内  *  * @param x 横坐标  * @param y 纵坐标  * @param button 按钮数组  * @return  */  private int isInAnyScale(float x, float y, Button[] button) {  // keys.getTop()是获取按钮所在父视图相对其父视图的右上角纵坐标    for (int i = 0; i < button.length; i++) {  if (x > button[i].getLeft() && x < button[i].getRight()   && y > button[i].getTop() + keys.getTop()   && y < button[i].getBottom() + keys.getTop()) {  return i;  }  }  return -1;  } }

 android:screenOrientation="landscape"