Android 游戏开发----【搭建游戏开发框架】

来源：互联网发布：js中获取el表达式的值编辑：程序博客网时间：2024/05/16 01:23

首先来一个Activity

package com.himi;import android.app.Activity;import android.os.Bundle;import android.view.Window;import android.view.WindowManager;public class ImageTest extends Activity {public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(new MySurfaceView(this));}}

接下来是Activyt的View。

注----SurfaceView 是View的子类，也是android对View的加强。其中surfaceView底层用的是双缓冲机制。

下面的程序主要是通过实现runnable接口，让draw方法在线程中执行。当然这里的draw不会自己被调用。

package bsn.cc.dd;import android.content.Context;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.view.KeyEvent;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.widget.SlidingDrawer;//注：实现runnable 只有加入Thread thread=new Thread(this);才会去执行runnable中的方法。以为runnable中的run 方法必须放到线程里public class MySurfaceView extends SurfaceView implements android.view.SurfaceHolder.Callback,Runnable{private int SW,SH;private Bitmap bitmap;private Resources rs;private Paint paint;private int robotx=100;private int roboty=100;private SurfaceHolder sfh;private Canvas canvas;private Thread thread=new Thread(this);public MySurfaceView(Context context) {super(context);//保持屏幕一直亮  this.setKeepScreenOn(true);  rs=this.getResources();      bitmap=BitmapFactory.decodeResource(rs, R.drawable.enemy1);      sfh=this.getHolder();      sfh.addCallback(this);      paint=new Paint();      paint.setColor(Color.BLUE);      //设置无锯齿      paint.setAntiAlias(true);      setFocusable(true);//用来响应按键}@Overridepublic void surfaceCreated(SurfaceHolder holder) {//如果在初始化的时候获得宽和高将返回0，因为这里的MySurfaceView是继承SurfaceView的，SurfaceView只有通过重写surfaceCreated的//时候View才是有值的。  SW=this.getWidth();      SH=this.getHeight();     thread.start();            }@Overridepublic void run() {System.out.println("------------");draw();try {Thread.sleep(100);} catch (Exception e) {// TODO: handle exception}}public void draw(){     canvas=sfh.lockCanvas();//自己理解是锁到画布开始画      canvas.drawRect(0, 0, SW, SH, paint);      canvas.save();        canvas.clipRect(robotx, roboty, robotx+(bitmap.getWidth()/13), roboty+bitmap.getHeight());            canvas.restore();      //释放画布锁。并显示出画布。      sfh.unlockCanvasAndPost(canvas);.//ok 之后显示画布。这里的save和restore 是一对， lockCanvas和unlockCanvasAndPost是一对}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {// TODO Auto-generated method stubreturn super.onKeyDown(keyCode, event);}@Overridepublic boolean onKeyUp(int keyCode, KeyEvent event) {// TODO Auto-generated method stubreturn super.onKeyUp(keyCode, event);}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {}}

注-- sfh=this.getHolder();
sfh.addCallback(this);是通过getHolder() 来管理sufaceView 。程序中红色字体标示了出来.只有把这两句加上程序才会运行都run。。。