飞机小游戏——一阶段

飞机大战的第一个页面GameSurface类

GamesurfaceView类方法

package com.example.chenning.myapplication;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Paint;import android.view.SurfaceHolder;import android.view.SurfaceView;/** * Created by ChenNing on 2017/5/24. */public  class GameSurfaceView extends SurfaceView implements SurfaceHolder.Callback{    //画布    private Canvas canvas;    //画笔    private Paint paint;    private SurfaceHolder surfaceHolder;    public static int screenWeight;    public static int screenheight;    private GameMenu gamemenu;    private Bitmap bmpMenuBG;//菜单页面背景图片    private Bitmap bmplogo;//菜单页面logo    private Bitmap bmgButton;//菜单页面Buffon    private Bitmap bmgText;//菜单页面文本    public GameSurfaceView(Context context) {        super(context);        surfaceHolder=this.getHolder();        surfaceHolder.addCallback(this);        paint = new Paint();        paint.setAntiAlias(true);//取消锯齿    }    @Override    public void surfaceCreated(SurfaceHolder holder) {        screenWeight=this.getWidth();        screenheight=this.getHeight();        initBitmap();        //创建一个新的线程        new Thread(new Runnable() {            @Override            public void run() {                myDraw();            }        }).start();    }    @Override    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {    }    @Override    public void surfaceDestroyed(SurfaceHolder holder) {    }    /**     * 初始化图片     */    private void initBitmap() {        //把图片转换成Bitmap类型        bmpMenuBG= BitmapFactory.decodeResource(this.getResources(),R.drawable.mainmenu);        bmplogo= BitmapFactory.decodeResource(this.getResources(),R.drawable.logo);        bmgButton= BitmapFactory.decodeResource(this.getResources(),R.drawable.menustart);        bmgText= BitmapFactory.decodeResource(this.getResources(),R.drawable.starttext);        //初始化对象        gamemenu=new GameMenu(bmpMenuBG,bmplogo,bmgButton,bmgText);    }    /**     * 绘图方法     */    private void myDraw() {        //初始化canvas        canvas=surfaceHolder.lockCanvas();        //调用gameMenu对象游戏菜单页面        gamemenu.draw(canvas,paint);        if(canvas!=null){            surfaceHolder.unlockCanvasAndPost(canvas);        }    }}

GameMenu类

package com.example.chenning.myapplication;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.Rect;/** * Created by ChenNing on 2017/5/24. */public class GameMenu {    private Bitmap bmpMenuBG;//菜单页面背景图片    private Bitmap bmplogo;//菜单页面logo    private Bitmap bmgButton;//菜单页面Buffon    private Bitmap bmgText;//菜单页面文本    private Rect rect;    public GameMenu(Bitmap bmpMenuBG,Bitmap bmplogo,Bitmap bmgButton,Bitmap bmgText){        this.bmpMenuBG=bmpMenuBG;        this.bmplogo=bmplogo;        this.bmgButton=bmgButton;        this.bmgText=bmgText;    }    /**     * 画菜单页面     * @param canvas     * @param paint     */     public void draw(Canvas canvas, Paint paint){         //画背景图         canvas.drawBitmap(bmpMenuBG,0,0,paint);         Rect rect=new Rect(0,GameSurfaceView.screenheight/3-100,                 GameSurfaceView.screenWeight,                 GameSurfaceView.screenheight/3+GameSurfaceView.screenheight/5-100);         canvas.drawBitmap(bmplogo,null,rect,paint);         int x=canvas.getWidth()/2-bmgButton.getWidth()/2;         int y=canvas.getHeight()/3*2;         canvas.drawBitmap(bmgButton,x,y,paint);         int z=canvas.getWidth()/2-bmgText.getWidth()/2;         int q=canvas.getHeight()/3*2+20;         canvas.drawBitmap(bmgText,z,q,paint);     }}

mainActivity类

package com.example.chenning.myapplication;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;public class    MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);//        setContentView(R.layout.activity_main);        //设置内容视图        setContentView(new GameSurfaceView(this));    }}