android SurfaceView编写小游戏简单代码

package test.testing; import java.util.ArrayList; import android.content.Context; import android.content.Intent; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.os.Handler; import android.util.AttributeSet; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; class MyView extends SurfaceView implements SurfaceHolder.Callback { private Drawable mLanderImage; private Drawable mFiringImage; private Drawable mCrashedImage; private Bitmap mBackgroundImage; private SurfaceHolder holder; private myThread mThread; private Handler mHandler; private int mLanderWidth; private int mLanderHeight; private OnTouchListener mOnTouch; private Context mContext; public MyView(Context context,AttributeSet attrs) { super(context,attrs); mContext = context; Resources res = context.getResources(); mLanderImage = context.getResources().getDrawable( R.drawable.lander_plain); mFiringImage = context.getResources().getDrawable( R.drawable.lander_firing); mCrashedImage = context.getResources().getDrawable( R.drawable.lander_crashed); mLanderWidth = mLanderImage.getIntrinsicWidth(); mLanderHeight = mLanderImage.getIntrinsicHeight(); mBackgroundImage = BitmapFactory.decodeResource(res, R.drawable.xiaguan); holder = this.getHolder(); holder.addCallback(this); setFocusable(true); mThread = new myThread(); mHandler = new Handler(); } float x = 0; float y = 0; public void move(float pixx, float pixy, int rot){ if (x >=0 && x <= 4*width ){ x = x + pixx; } if (x <=0){ x =0; } if (x >= 4*width){ x = 4*width; } Log.d("@@@@@@@@@@@@@@@x@@@@@@@@@@@@@@@@@", "x = "+x); if (y >=0 && y <= 2*height) y = y + pixy; if (y <= 0){ y = 0; } if (y >= 2*height) y = 2*height; Log.d("@@@@@@@@@@@@@@@y@@@@@@@@@@@@@@@@@", "y = "+y); rotation = rot; mHandler.post(mThread); if (x > 670 && x < 750 && y > 400 && y < 500){ Intent intent = new Intent ("action.next"); mContext.sendBroadcast(intent); } } class myThread extends Thread { @Override public void run() { Canvas canvas = holder.lockCanvas(null); doDraw(canvas); holder.unlockCanvasAndPost(canvas); } public void setSurfaceSize(int width, int height){ mBackgroundImage = mBackgroundImage.createScaledBitmap( mBackgroundImage, width*5, height*3, true); } } private int width= 1 ; private int height = 1 ; private int rotation = 0; @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // X = width; // Y = height; } @Override public void surfaceCreated(SurfaceHolder arg0) { width = getWidth(); height = getHeight(); mThread.setSurfaceSize(width, height); mThread.start(); } @Override public void surfaceDestroyed(SurfaceHolder arg0) { // TODO Auto-generated method stub try { mThread.join(); mHandler.removeCallbacks(mThread); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } boolean stop = true; private void doDraw(Canvas canvas) { Log.d("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@","dodraw "); synchronized (holder) { Log.d("@@@@@@@@@@@@@@@@@@@@@@@@@@","@@@@"+x); canvas.drawBitmap(mBackgroundImage, -x, -y, null); canvas.save(); // int m; // int n; // m = Math.round(x); // n = Math.round(y); canvas.rotate(rotation, 150, 250); if(stop){ mLanderImage.setBounds(150-mLanderWidth/2, 250-mLanderHeight/2, 150+mLanderWidth/2, 250+mLanderHeight/2); mLanderImage.draw(canvas); }else{ mFiringImage.setBounds(150-mLanderWidth/2, 250-mLanderHeight/2, 150+mLanderWidth/2, 250+mLanderHeight/2); mFiringImage.draw(canvas); } canvas.restore(); } } }