Android游戏之仿 微信飞机大战

暑假实训的一个程序，也是我第一次接触java和android开发，模仿微信的飞机大战，效果图如下：

         

     

一：素材整理

素材来自网络，下载地址在此：http://download.csdn.net/detail/bifei8718/7665447

二：遇到的问题

使用Android Suifaceview，之前开发时候遇到很多问题，比如闪屏、按home后再进入黑屏等问题，解决方法在其他转载文章中，

SurfaceView屏幕闪烁与双缓冲

surfaceview 双缓冲

【Android游戏开发十九】(必看篇)SurfaceView运行机制详解—剖析Back与Home按键及切入后台等异常处理！

三：java继承、派生和多态的使用

由于有很多种敌机，所以可以抽象出一个基类，我定义了一个Things的基类。

（1）Things的基类

package com.swust.gamedeom;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.RectF;public abstract class Things {public float x ;public float y ;public float r; //物体的rightpublic float b;//物体的buttompublic float speed ;public float width;public float hight;public Bitmap  Image;public Resources res;public int  lifeValue;private int Sorces;public int getLifeValue() {return lifeValue;}public void setLifeValue(int lifeValue) {this.lifeValue = lifeValue;}public void lifeReduce(){lifeValue--;}public float getR() {return r;}public void setR(float r) {this.r = r;}public float getB() {return b;}public void setB(float b) {this.b = b;}public float getX() {return x;}public void setX(float x) {this.x = x;}public float getY() {return y;}public void setY(float y) {this.y = y;}public float getWidth() {return width;}public void setWidth(float width) {this.width = width;}public float getHight() {return hight;}public void setHight(float hight) {this.hight = hight;}public void SetSpeed(float speed){this.speed = speed;}public RectF getrectf(){return new RectF(x, y, x+width, y+hight);}public int getSorces() {return Sorces;}public void setSorces(int sorces) {Sorces = sorces;}public abstract void Draw(Canvas canvas);//绘图public abstract void Move();//物体移动public abstract int check();//物体状态检查public abstract void playsound(MainActivity act);//播放物体被销毁时的音效}

然后分别派生出

自身飞机---Plane

package com.swust.gamedeom;import java.util.ArrayList;import com.swust.gamedeom.R;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.RectF;public class Plane extends Things{private Bitmap Image1;private Bitmap Image2;private Bitmap Image3;private Bitmap Image4;private int  num;public Plane(Resources r,float Swidth,float Sheight){res = r;Image = BitmapFactory.decodeResource(res, R.drawable.hero1);width = Image.getWidth();hight = Image.getHeight();setX((Swidth-width)/2);setY(Sheight-hight);setR(x+width);setB(y+hight);SetSpeed(10);setLifeValue(1);Init();}/** * 记载图片资源 */public void Init(){Image1 = BitmapFactory.decodeResource(res, R.drawable.hero_blowup_n1);Image2 = BitmapFactory.decodeResource(res, R.drawable.hero_blowup_n2);Image3 = BitmapFactory.decodeResource(res, R.drawable.hero_blowup_n3);Image4 = BitmapFactory.decodeResource(res, R.drawable.hero_blowup_n4);num=0;}/** * 绘制飞机 */@Overridepublic void Draw(Canvas canvas) {// TODO Auto-generated method stubif(getLifeValue()==1){canvas.drawBitmap(Image, x, y,null);}else {num++;if(num==1){canvas.drawBitmap(Image1, x, y,null);}else if(num==2){canvas.drawBitmap(Image2, x, y,null);}else if(num==3){canvas.drawBitmap(Image3, x, y,null);}else if(num==4){canvas.drawBitmap(Image4, x, y,null);}}//Move();}@Overridepublic void Move() {// TODO Auto-generated method stub}/** * 检查飞机状态 */public int check(){if(num>=4){return 1;}else {return 0;}}/** * 碰撞检测 * @param EmPlanelist  敌方飞机集合 * @param act声音控制 */public void hitenemy( ArrayList<Things> EmPlanelist,MainActivity act){RectF rect1 = new RectF(x+15,y+15,x+width-15,y+hight-15);RectF rect2;for (int i = 0; i < EmPlanelist.size(); i++) { Things emPlane = EmPlanelist.get(i); rect2 = emPlane.getrectf();if(rect1.intersect(rect2)&& emPlane.getLifeValue()!=0&&this.getLifeValue()!=0){this.lifeReduce();emPlane.lifeReduce();act.stopSound();act.playSound(7, 0);}}}/** *  * @param ufo 道具 * @param act 声音 * @return 如果拾取到道具，返回true，否则false */public boolean GetUfo(Ufo ufo,MainActivity act){RectF rect1 = this.getrectf();RectF rect2 = ufo.getrectf();if(rect1.intersect(rect2)){ufo.lifeReduce();act.playSound(8, 0);return true;}return false;}@Overridepublic void playsound(MainActivity act) {// TODO Auto-generated method stubact.playSound(7, 0);}}

背景绘制---BackGround

package com.swust.gamedeom;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.Typeface;public  class BackGround extends Things{private Bitmap ImageStart;//开始游戏图片private Bitmap bitmap1;//游戏背景运行图private Bitmap bitmap2;private Bitmap ImageOver;//游戏结束小图private Bitmap ImageAgain;//重新开始游戏图private Bitmap ImageContinue;//继续游戏图private Bitmap ImagePassue;//暂停游戏图private Bitmap bitmapover;//游戏结束背景图private Bitmap LoadImage1;//游戏加载图private Bitmap LoadImage2;private Bitmap LoadImage3;private Bitmap LoadImage4;private Bitmap titleImage;private Bitmap ImageMusicClose;//音乐开关图private Bitmap ImageMusicOpen;private float top = 0;private int Statue;//游戏状态private int Score;//游戏分数private Paint paint;private int num = 0;private MainActivity act;private boolean flag;private int highScore;//最高分private boolean isplay;private Paint sorcePaint;public void setAct(MainActivity act) {this.act = act;}public void setSources(int Score) {this.Score = Score;}public int getStatue() {return Statue;}public void setStatue(int statue,boolean isplay) {Statue = statue;this.isplay = isplay;}public BackGround(Resources r,float SWidth,float SHeight,Paint paint){res =r;ImageAgain = BitmapFactory.decodeResource(res,R.drawable.game_again);ImageStart = BitmapFactory.decodeResource(res,R.drawable.game_start);ImageContinue = BitmapFactory.decodeResource(res,R.drawable.game_continue);ImageOver = BitmapFactory.decodeResource(res,R.drawable.game_over);ImagePassue = BitmapFactory.decodeResource(res,R.drawable.game_pause_nor);bitmap1 = CreatBitmap(SWidth, SHeight,R.drawable.background);bitmap2 = CreatBitmap(SWidth, SHeight,R.drawable.background);bitmapover = CreatBitmap(SWidth, SHeight,R.drawable.gameover);LoadImage1 = BitmapFactory.decodeResource(res,R.drawable.game_loading1);LoadImage2 = BitmapFactory.decodeResource(res,R.drawable.game_loading2);LoadImage3 = BitmapFactory.decodeResource(res,R.drawable.game_loading3);LoadImage4 = BitmapFactory.decodeResource(res,R.drawable.game_loading4);titleImage = BitmapFactory.decodeResource(res,R.drawable.shoot_copyright);ImageMusicClose = BitmapFactory.decodeResource(res,R.drawable.bkmusic_close);ImageMusicOpen = BitmapFactory.decodeResource(res,R.drawable.bkmusic_play);this.hight = SHeight;this.width = SWidth;this.paint = paint;flag = true;SetSpeed(3);isplay = true;sorcePaint = new Paint();Typeface font = Typeface.create(Typeface.SANS_SERIF,Typeface.BOLD);sorcePaint.setTypeface(font);sorcePaint.setColor(0xff949694);sorcePaint.setTextSize(75);}/** * 根据屏幕尺寸动态调整背景图片大小 * @param SWidth  屏幕宽度 * @param SHeight 屏幕高度 * @param ID  图片ID * @return  调整后的图片 */public Bitmap CreatBitmap(float SWidth,float SHeight,int ID){Bitmap bitMap = BitmapFactory.decodeResource(res,ID);int widtht = bitMap.getWidth();int height = bitMap.getHeight();int newWidth = (int)SWidth;int newHeight =(int)SHeight;float scaleWidth = ((float) newWidth) / widtht;float scaleHeight = ((float) newHeight) / height;Matrix matrix = new Matrix();matrix.postScale(scaleWidth, scaleHeight);bitMap = Bitmap.createBitmap(bitMap, 0, 0, widtht, height, matrix, true);return bitMap;}/** * 根据游戏状态绘制相应图片 */@Overridepublic void Draw(Canvas canvas) {// TODO Auto-generated method stubif(Statue == 1){canvas.drawBitmap(bitmap1, 0, top - hight, null);canvas.drawBitmap(bitmap2, 0, top, null);canvas.drawBitmap(ImagePassue, 0, 0, null);canvas.drawText(""+Score,ImagePassue.getWidth()+10, 45, paint);Move();flag = true;}else if(Statue == 2){ canvas.drawBitmap(bitmap1, 0, 0, null); if(isplay){ canvas.drawBitmap(ImageMusicOpen, width-ImageMusicOpen.getWidth(), 0, null); } else{ canvas.drawBitmap(ImageMusicClose, width-ImageMusicClose.getWidth(), 0, null); } canvas.drawBitmap(ImageContinue, (width-ImageContinue.getWidth())/2,hight/2-150, null); canvas.drawBitmap(ImageAgain, (width-ImageAgain.getWidth())/2,hight/2, null); canvas.drawBitmap(ImageOver, (width-ImageOver.getWidth())/2,hight/2+150, null);}else if(Statue == 3){if(flag){flag = false;String string = SDcardData.ReadDate();highScore = Integer.valueOf(string).intValue();if(highScore<Score){highScore = Score;}SDcardData.WriteData(String.valueOf(highScore));}canvas.drawBitmap(bitmapover, 0, 0, null);canvas.drawText(""+highScore, width/4+20, 80, paint);canvas.drawText(""+Score, width/2-80, hight/2, sorcePaint);canvas.drawBitmap(ImageAgain, (width-ImageAgain.getWidth())/2,hight-200, null);}else if(Statue ==0){ canvas.drawBitmap(bitmap1, 0, 0, null); canvas.drawBitmap(titleImage, (width-titleImage.getWidth())-100, hight/4-50, null); if(act.Loadflag == true){ canvas.drawBitmap(ImageStart, (width-ImageStart.getWidth())/2,hight-200, null); } num++; if(num<10){ canvas.drawBitmap(LoadImage1, (width-LoadImage1.getWidth())/2, hight/2+50, null); } else if(num>=10 && num<20){ canvas.drawBitmap(LoadImage2, (width-LoadImage2.getWidth())/2, hight/2+50, null); } else if(num>=20&& num<30){ canvas.drawBitmap(LoadImage3, (width-LoadImage3.getWidth())/2, hight/2+50, null); } else if(num==30){ canvas.drawBitmap(LoadImage4, (width-LoadImage4.getWidth())/2, hight/2+50, null); num = 0; }}}/** * 背景图片移动 */@Overridepublic void Move() {// TODO Auto-generated method stubtop += speed;if (top >= (hight + speed))top = 0;}@Overridepublic int check() {// TODO Auto-generated method stubreturn 0;}@Overridepublic void playsound(MainActivity act) {// TODO Auto-generated method stub}}

敌机---EmptyPlane

package com.swust.gamedeom;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;public class EmptyPlane extends Things{private float Height;private int num;private Bitmap Image1;private Bitmap Image2;private Bitmap Image3;private Bitmap Image4;public EmptyPlane(Resources r,Float SWidth,float SHeight){this.res = r;Image = BitmapFactory.decodeResource(r, R.drawable.enemy1);width = Image.getWidth();hight = Image.getHeight();setX((float)(Math.random()*(SWidth-width)));setY(0);SetSpeed(7);//15this.Height = SHeight;setLifeValue(1);Init();setSorces(10);}public void Init(){Image1 = BitmapFactory.decodeResource(res, R.drawable.enemy1_down1);Image2 = BitmapFactory.decodeResource(res, R.drawable.enemy1_down2);Image3 = BitmapFactory.decodeResource(res, R.drawable.enemy1_down3);Image4 = BitmapFactory.decodeResource(res, R.drawable.enemy1_down4);num=0;}@Overridepublic void Draw(Canvas canvas) {// TODO Auto-generated method stubif(getLifeValue()==1){canvas.drawBitmap(Image, x, y,null);Move();}else {switch (num/3) {case 0:canvas.drawBitmap(Image1, x, y,null);break;case 1:canvas.drawBitmap(Image2, x, y,null);break;case 2:canvas.drawBitmap(Image3, x, y,null);break;case 3:canvas.drawBitmap(Image4, x, y,null);break;default:break;}num++;}}@Overridepublic void Move() {// TODO Auto-generated method stuby += speed;}@Overridepublic int check(){if(num>=12){return 1;}if(y>Height){return 2;}return 0;}@Overridepublic void playsound(MainActivity act) {// TODO Auto-generated method stubact.playSound(3, 0);}}

敌机大飞机-- EmBigPlane

package com.swust.gamedeom;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;public class EmBigPlane extends Things{private float Height;private int num;private Bitmap Image1;private Bitmap Image2;private Bitmap Image3;private Bitmap Image4;private Bitmap ImageHit;public EmBigPlane(Resources r,Float SWidth,float SHeight){this.res = r;Image = BitmapFactory.decodeResource(r, R.drawable.enemy2);ImageHit = BitmapFactory.decodeResource(r, R.drawable.enemy2_hit);width = Image.getWidth();hight = Image.getHeight();setX((float)(Math.random()*(SWidth-width)));setY(0);SetSpeed(5);//13this.Height = SHeight;setLifeValue(10);Init();setSorces(50);}public void Init(){Image1 = BitmapFactory.decodeResource(res, R.drawable.enemy2_down1);Image2 = BitmapFactory.decodeResource(res, R.drawable.enemy2_down2);Image3 = BitmapFactory.decodeResource(res, R.drawable.enemy2_down3);Image4 = BitmapFactory.decodeResource(res, R.drawable.enemy2_down4);num=0;}@Overridepublic void Draw(Canvas canvas) {// TODO Auto-generated method stubif(getLifeValue()<=10 && getLifeValue()>=5){canvas.drawBitmap(Image, x, y,null);Move();}else if(getLifeValue()<5&& getLifeValue()>=1){canvas.drawBitmap(ImageHit, x, y,null);Move();}else {switch (num/3) {case 0:canvas.drawBitmap(Image1, x, y,null);break;case 1:canvas.drawBitmap(Image2, x, y,null);break;case 2:canvas.drawBitmap(Image3, x, y,null);break;case 3:canvas.drawBitmap(Image4, x, y,null);break;default:break;}num++;}}@Overridepublic void Move() {// TODO Auto-generated method stuby+=speed;}@Overridepublic int check(){if(num>=12){return 1;}if(y>Height){return 2;}return 0;}@Overridepublic void playsound(MainActivity act) {// TODO Auto-generated method stubact.playSound(4, 0);}}

敌机Boss--EmBoss

import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import com.swust.gamedeom.R;public class EmBoss extends Things{private float Height;private float Width;private int num;private Bitmap Image1;private Bitmap Image2;private Bitmap Image3;private Bitmap Image4;private Bitmap Image5;private Bitmap Image6;private Bitmap ImageHit;public EmBoss(Resources r,float SWidth,float SHeight){this.res = r;Image = BitmapFactory.decodeResource(r, R.drawable.enemy3_n1);ImageHit = BitmapFactory.decodeResource(r, R.drawable.enemy3_hit);width = Image.getWidth();hight = Image.getHeight();setX((float)(Math.random()*(SWidth-width)));setY(-hight);SetSpeed(2);this.Height = SHeight;this.Width = SWidth;setLifeValue(60);Init();setSorces(300);}public void Init(){Image1 = BitmapFactory.decodeResource(res, R.drawable.enemy3_down1);Image2 = BitmapFactory.decodeResource(res, R.drawable.enemy3_down2);Image3 = BitmapFactory.decodeResource(res, R.drawable.enemy3_down3);Image4 = BitmapFactory.decodeResource(res, R.drawable.enemy3_down4);Image5 = BitmapFactory.decodeResource(res, R.drawable.enemy3_down5);Image6 = BitmapFactory.decodeResource(res, R.drawable.enemy3_down6);num=0;}@Overridepublic void Draw(Canvas canvas) {// TODO Auto-generated method stubif(getLifeValue()<=60 && getLifeValue()>=30){canvas.drawBitmap(Image, x, y,null);Move();}else if(getLifeValue()<30&& getLifeValue()>=1){canvas.drawBitmap(ImageHit, x, y,null);Move();}else {switch (num/3) {case 0:canvas.drawBitmap(Image1, x, y,null);break;case 1:canvas.drawBitmap(Image2, x, y,null);break;case 2:canvas.drawBitmap(Image3, x, y,null);break;case 3:canvas.drawBitmap(Image4, x, y,null);break;case 4:canvas.drawBitmap(Image5, x, y,null);break;case 5:canvas.drawBitmap(Image6, x, y,null);break;default:break;}num++;}}@Overridepublic void Move() {// TODO Auto-generated method stub  if(y>=(Height/2-hight)){y-=speed;} else{ y+=speed; }}@Overridepublic int check(){if(num>=18){return 1;}return 0;}@Overridepublic void playsound(MainActivity act) {// TODO Auto-generated method stubact.playSound(5, 0);}}

道具---Ufo

package com.swust.gamedeom;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;public class Ufo extends Things{private Bitmap Image2;private float Height;private int  UfoFlag = 0;public int getUfoFlag() {return UfoFlag;}public void setUfoFlag(int ufoFlag) {UfoFlag = ufoFlag;}public Ufo(Resources r,int flag,float SWidth,float SHeight){res = r;Image = BitmapFactory.decodeResource(res, R.drawable.ufo1);Image2 = BitmapFactory.decodeResource(res, R.drawable.ufo2);width = Image.getWidth();hight = Image.getHeight();Height = SHeight;SetSpeed(4);//10setUfoFlag(flag);setLifeValue(1);if(UfoFlag ==1){setX(SWidth-width-50);}else if(UfoFlag == 2){setX(50);}}public int check(){if(getLifeValue()==0){return 1;}if(y>Height){return 2;}return 0;}@Overridepublic void Draw(Canvas canvas) {// TODO Auto-generated method stubif(UfoFlag ==1){canvas.drawBitmap(Image, x, y,null);}else if(UfoFlag ==2){canvas.drawBitmap(Image2, x, y,null);}Move();}@Overridepublic void Move() {// TODO Auto-generated method stuby+=speed;}@Overridepublic void playsound(MainActivity act) {// TODO Auto-generated method stubact.playSound(8, 0);}}

子弹---Bullet

package com.swust.gamedeom;import java.util.ArrayList;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.RectF;public class Bullet extends Things{private Bitmap Image2;private Bitmap Image3;private int SuperBullet;public void setSuperBullet(int superBullet) {SuperBullet = superBullet;}public Bullet(Resources r){res = r;Image = BitmapFactory.decodeResource(res, R.drawable.bullet1);Image2 = BitmapFactory.decodeResource(res, R.drawable.bullet2);Image3 = BitmapFactory.decodeResource(res, R.drawable.bomb);width = Image.getWidth();hight = Image.getHeight();SetSpeed(60);setLifeValue(1);SuperBullet = 0;}@Overridepublic void Draw(Canvas canvas) {// TODO Auto-generated method stubif(SuperBullet == 0){canvas.drawBitmap(Image, x, y,null);}else if(SuperBullet == 1){canvas.drawBitmap(Image2, x, y,null);}else if(SuperBullet ==2){canvas.drawBitmap(Image3, x, y,null);}Move();}@Overridepublic void Move() {// TODO Auto-generated method stuby-=speed;}@Overridepublic int check() {if(getLifeValue()==0){return 1;}if(this.y<0){return 2;}return 0;}/** * 子弹和敌机的碰撞检测 * @param EmPlanelist  敌机集合 * @param act  声音控制 */public void hitenemy( ArrayList<Things>EmPlanelist,MainActivity act){RectF rect1 = this.getrectf();RectF rect2;for (int i = 0; i < EmPlanelist.size(); i++) { Things emPlane = EmPlanelist.get(i); rect2 = emPlane.getrectf();if(rect1.intersect(rect2)&& emPlane.getLifeValue()!=0){this.lifeReduce();emPlane.lifeReduce();}}}@Overridepublic void playsound(MainActivity act) {// TODO Auto-generated method stub}}

四：简单工厂模式的使用

package com.swust.gamedeom;import android.content.res.Resources;public class EmPlaneFactory {private EmPlaneFactory(){}public static Things getEmPlane(int x,Resources r,Float SWidth,float SHeight){Things emPlane = null;switch (x) {case 1:emPlane = new EmptyPlane(r,SWidth,SHeight);break;case 2:emPlane = new EmBigPlane(r,SWidth,SHeight);break;case 3:emPlane = new EmBoss(r,SWidth,SHeight);break;}return emPlane;}}

五：主程序和音频加载

package com.swust.gamedeom;import java.io.IOException;import java.util.HashMap;import android.media.AudioManager;import android.media.MediaPlayer;import android.media.SoundPool;import android.os.Bundle;import android.annotation.SuppressLint;import android.app.Activity;import android.content.Context;import android.graphics.Paint;import android.graphics.Typeface;import android.util.DisplayMetrics;import android.view.Menu;import android.view.Window;import android.view.WindowManager;@SuppressLint("UseSparseArrays")public class MainActivity extends Activity implements Runnable {    private MySuifaceView view;    private MediaPlayer mMediaPlayer;  private SoundPool sp;    private HashMap<Integer, Integer> spMap;    public boolean Loadflag;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);                requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);  // 隐藏状态栏DisplayMetrics metric = new DisplayMetrics();        getWindowManager().getDefaultDisplay().getMetrics(metric);                Paint paint = new Paint();Typeface font = Typeface.create(Typeface.SANS_SERIF,Typeface.BOLD);paint.setTypeface(font);paint.setColor(0xff949694);paint.setTextSize(55);                float width = (float)metric.widthPixels;        float height = (float) metric.heightPixels;        Loadflag = false;view = new MySuifaceView(this,width,height,this,paint);        setContentView(view);         new Thread(this).start();            }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }    public void InitSound() {        mMediaPlayer = MediaPlayer.create(this, R.raw.game_music);         sp = new SoundPool(10, AudioManager.STREAM_MUSIC, 5);        spMap = new HashMap<Integer, Integer>();        spMap.put(2, sp.load(this, R.raw.bullet, 1));        spMap.put(3, sp.load(this, R.raw.enemy1_down,1));        spMap.put(4, sp.load(this, R.raw.enemy2_down,1));        spMap.put(5, sp.load(this, R.raw.enemy3_down,1));        spMap.put(6, sp.load(this, R.raw.use_bomb,1));        spMap.put(7, sp.load(this, R.raw.game_over,1));        spMap.put(8, sp.load(this, R.raw.get_bomb,1));        Loadflag = true;    }    public void playSound(int sound, int number) {        if(sound==1){         if (!mMediaPlayer.isPlaying()) {                  mMediaPlayer.start();              }      }    else{    AudioManager am = (AudioManager) this.getSystemService(Context.AUDIO_SERVICE);    float audioMaxVolumn = am.getStreamMaxVolume(AudioManager.STREAM_MUSIC);    float volumnCurrent = am.getStreamVolume(AudioManager.STREAM_MUSIC);    float volumnRatio = volumnCurrent / audioMaxVolumn;    sp.play(spMap.get(sound), volumnRatio, volumnRatio, 1, number,  1f);    }      }    public void stopSound(){        if (mMediaPlayer.isPlaying()){              mMediaPlayer.pause();          }      }    @Override    protected void onResume() {    // TODO Auto-generated method stub    setContentView( view );    super.onResume();    }@Overridepublic void run() {// TODO Auto-generated method stub InitSound(); try {mMediaPlayer.prepare();} catch (IllegalStateException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} }  }

这里通过一个线程来单独加载音频，使用音频池。

六：Suifaceview 类（核心）

package com.swust.gamedeom;import java.util.ArrayList;import android.annotation.SuppressLint;import android.annotation.TargetApi;import android.content.Context;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.Point;import android.graphics.Rect;import android.view.MotionEvent;import android.view.SurfaceHolder;import android.view.SurfaceHolder.Callback;import android.view.SurfaceView;public class MySuifaceView extends SurfaceView implements Callback, Runnable {private ArrayList<Bullet> bulletlist = new ArrayList<Bullet>();private ArrayList<Things> EmPlanelist = new ArrayList<Things>();private ArrayList<Bomb> bomblist = new ArrayList<Bomb>();private Ufo ufo_double;private Ufo ufo_super;private Plane plane;private SurfaceHolder mSurfaceHolder = null;private boolean mbloop = false;private BackGround bk;private MainActivity activity;private Point point = new Point();private Rect rect;private boolean canDrag = false;private int offsetX = 0, offsetY = 0;private int Count = 0;private int bossCount = 0;private float SWidth;private float SHeight;private int Score;private int statue;private Rect rectbtn;private Canvas canvas=null;private int Emcreat;private int EmBicreat;private int EmBosscreat;private Rect rectMusic;private Rect rectPassue;private Rect rectAgain;private Rect rectContinue;private Rect rectOver;private boolean bullet_double;private boolean bullet_super;private boolean bombScreen;private int bulletTime;private int bulletcreat;private Rect rectbomb;private boolean isPlay;@TargetApi(19)@SuppressLint("NewApi")public MySuifaceView(Context context, float width, float height,MainActivity act,Paint paint) {super(context);// TODO Auto-generated constructor stub// 添加回调函数mSurfaceHolder = this.getHolder();mSurfaceHolder.addCallback(this);this.setFocusable(true);this.setKeepScreenOn(true);this.activity = act;Init(width,height);bk = new BackGround(getResources(),width, height,paint);SWidth = width;SHeight = height;isPlay = true;statue =0;rectbtn = new Rect((int)(width-300)/2,(int)(height-200),(int)(width/2+150),(int)(height-150));rectPassue = new Rect(0,0,150,150);rectContinue = new Rect((int)(width-300)/2,(int)(height/2-150),(int)(width/2+150),(int)(height/2-90));rectAgain =  new Rect((int)(width-300)/2,(int)(height/2),(int)(width/2+150),(int)(height/2+60));rectOver = new Rect((int)(width-300)/2,(int)(height/2+150),(int)(width/2+150),(int)(height/2+210));rectbomb = new Rect(20,(int)(height-100),160,(int)(height));rectMusic = new Rect((int)width-50,0,(int)width,50);}public void Init(float width, float height){plane = new com.swust.gamedeom.Plane(getResources(), width, height);rect = new Rect((int) plane.getX(), (int) plane.getY(),(int) plane.getR(), (int) plane.getB());bulletcreat = 7;Emcreat = 15;EmBicreat = 150;EmBosscreat = 3379;Score = 0;Count = 0;bullet_double = false;bullet_super = false;bulletTime = 0;bombScreen = false;bossCount = 0;bulletlist.clear();EmPlanelist.clear();bomblist.clear();ufo_double = null;ufo_super = null;}public void DrawBitmap(){bk.setAct(activity);bk.setSources(Score);bk.setStatue(statue,isPlay);bk.Draw(canvas);if(statue == 1){plane.Draw(canvas);if(plane.check()!=0){statue = 3;activity.stopSound();}plane.hitenemy(EmPlanelist,activity);if(ufo_double!=null){ufo_double.Draw(canvas);bullet_double = plane.GetUfo(ufo_double,activity);if(ufo_double.check()!=0){ufo_double=null;}}if(ufo_super!=null){ufo_super.Draw(canvas);bullet_super = plane.GetUfo(ufo_super,activity);if(ufo_super.check()!=0){ufo_super=null;}}for (int i = 0; i < bulletlist.size(); i++) {Bullet bullet = bulletlist.get(i);bullet.Draw(canvas);bullet.hitenemy(EmPlanelist,activity);if (bullet.check()!=0) {bulletlist.remove(bullet);i--;}}for (int i = 0; i < EmPlanelist.size(); i++) {Things emPlane = EmPlanelist.get(i);if(emPlane.check()==1){Score+=emPlane.getSorces();emPlane.playsound(activity);EmPlanelist.remove(emPlane);i--;}else if(emPlane.check()==2){EmPlanelist.remove(emPlane);i--;}else{emPlane.Draw(canvas);}}for (int m = 0; m < bomblist.size(); m++) {Bomb bomb = bomblist.get(m);if(bombScreen){bomb.lifeReduce();ScreenBomb();bombScreen = false;}if(bomb.check()!=0){bomblist.remove(bomb);m--;}else{bomb.setBombnum(bomblist.size());bomb.Draw(canvas);}}}}public  void Draw() {try { canvas = mSurfaceHolder.lockCanvas(); if(canvas!=null){ DrawBitmap(); }} catch (Exception e) {// TODO: handle exception}finally{if(canvas!=null)mSurfaceHolder.unlockCanvasAndPost(canvas);}}@Overridepublic void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {// TODO Auto-generated method stub}@Overridepublic void surfaceCreated(SurfaceHolder arg0) {// TODO Auto-generated method stubmbloop = true;new Thread(this).start();}@Overridepublic void surfaceDestroyed(SurfaceHolder arg0) {// TODO Auto-generated method stubmbloop = false;activity.stopSound();isPlay = false;statue =2;}@Overridepublic void run() {          // TODO Auto-generated method stub          int SLEEP_TIME=15;          while (mbloop) {              long start=System.currentTimeMillis();              Draw();            if(statue == 1){            Count++;            //Adjust();            AddEmBigPlane();            Addbuilt();            AddEmplane();            AddEmBoss();            AddUfo();            Addbomb();            if(bullet_double){            checktime();            }            }            long end=System.currentTimeMillis();                if((end-start)<SLEEP_TIME){                  try {                        Thread.sleep(SLEEP_TIME-(end-start));                    } catch (InterruptedException e) {                        // TODO Auto-generated catch block                        e.printStackTrace();                    }                }            }  }public void ScreenBomb(){for (int i = 0; i < EmPlanelist.size(); i++) { Things emPlane = EmPlanelist.get(i);    emPlane.setLifeValue(0);}}public void Addbomb(){if(bullet_super){Bomb bomb = new Bomb(getResources(), SWidth, SHeight);bomblist.add(bomb);bullet_super = false;}}public void Adjust(){if((Score+10)%1000 == 0){Emcreat-=1;EmBicreat-=5;}}public void checktime(){bulletTime++;if(bulletTime % 299==0){bullet_double = false;bulletTime = 0;}}public void AddUfo(){if(Count%579==0){int num = (int) (Math.random()*9+1);if(num%3==0){ufo_super = new Ufo(getResources(), 2, SWidth, SHeight);}else {ufo_double = new Ufo(getResources(), 1, SWidth, SHeight);}}}public void Addbuilt() {if (Count % bulletcreat== 0 ) {if(!bullet_double){Bullet bullet = BulletFactory.getBullet(getResources(),plane.getX()+plane.getWidth()/2-5, plane.getY()-10);bulletlist.add(bullet);activity.playSound(2, 0);}else {Bullet bullet1 = BulletFactory.getBullet(getResources(),plane.getX()+plane.getWidth()/2-30, plane.getY()-10);bullet1.setSuperBullet(1);Bullet bullet2 = BulletFactory.getBullet(getResources(),plane.getX()+plane.getWidth()/2+30, plane.getY()-10);bullet2.setSuperBullet(1);bulletlist.add(bullet1);bulletlist.add(bullet2);activity.playSound(2, 0);}}}public void AddEmplane(){if(Count%Emcreat==0 ){Things emPlane = EmPlaneFactory.getEmPlane(1,getResources(), SWidth, SHeight);EmPlanelist.add(emPlane);}}public void AddEmBigPlane(){if(Count%EmBicreat==0){Things emPlane = EmPlaneFactory.getEmPlane(2,getResources(), SWidth, SHeight);EmPlanelist.add(emPlane);}}public void AddEmBoss(){if(Count%EmBosscreat==0){Things emPlane = EmPlaneFactory.getEmPlane(3,getResources(), SWidth, SHeight);EmPlanelist.add(emPlane);Count = 0;}}@Overridepublic boolean onTouchEvent(MotionEvent event) {// TODO Auto-generated method stubswitch (event.getAction()) {case MotionEvent.ACTION_DOWN:point.x = (int) event.getX();point.y = (int) event.getY();if(statue == 3|| statue == 0){if(rectbtn.contains(point.x, point.y)){Init(SWidth, SHeight);if(isPlay){activity.playSound(1, -1);}statue=1;}}if(statue == 1){if(rectPassue.contains(point.x,point.y)){statue = 2;}if(rectbomb.contains(point.x,point.y)&& bomblist.size()>0){bombScreen = true;}}if(statue == 2){if(rectContinue.contains(point.x,point.y)){statue=1;}else if(rectAgain.contains(point.x,point.y)){Init(SWidth, SHeight);statue=1;}else if(rectOver.contains(point.x,point.y)){activity.finish();}else if(rectMusic.contains(point.x, point.y)){if(isPlay){activity.stopSound();isPlay = false;}else{activity.playSound(1, -1);isPlay = true;}}}if (rect.contains(point.x, point.y)) {canDrag = true;offsetX = point.x - rect.left;offsetY = point.y - rect.top;}break;case MotionEvent.ACTION_MOVE:if(canDrag){rect.left = (int) event.getX() - offsetX;rect.top = (int) event.getY() - offsetY;rect.right = rect.left + (int) plane.getWidth();rect.bottom = rect.top + (int) plane.getHight();if (rect.left < 0) {rect.left = 0;rect.right = rect.left + (int) plane.getWidth();}if (rect.right > getMeasuredWidth()) {rect.right = getMeasuredWidth();rect.left = rect.right - (int) plane.getWidth();}if (rect.top < 0) {rect.top = 0;rect.bottom = rect.top + (int) plane.getHight();}if (rect.bottom > getMeasuredHeight()) {rect.bottom = getMeasuredHeight();rect.top = rect.bottom - (int) plane.getHight();}plane.setX((float) rect.left);plane.setY((float) rect.top);break;}case MotionEvent.ACTION_UP:canDrag = false;break;default:break;}return true;}}

核心就是DrawBitmap()函数，线程每隔15ms刷屏一次，每次都会调用DrawBitmap()函数去绘制各个物体，这样就会显示出游戏的效果了。

七：总结

总体来说，用了2周的时间，从什么都不会到能做出一个小游戏，学到了很多东西，Surfaceview的认识更深刻了，也参见了好多大神的文章，在此表示感谢！