Android(安卓)DrawBitmap绘制图像

package com.Aina.Android;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Rect;import android.graphics.drawable.BitmapDrawable;import android.view.KeyEvent;import android.view.View;public class GameView extends View implements Runnable {private Paint mPaint;private Bitmap mBitqq;private Bitmap mBitDestTop;private int movex = 0;private int DisplayWidth;//屏幕宽带private int DisplayHeight;//屏幕高度public GameView(Context context,int DisplayWidth,int DisplayHeight) {super(context);this.DisplayWidth = DisplayWidth;this.DisplayHeight = DisplayHeight;mPaint = new Paint();mBitqq = ((BitmapDrawable) this.getResources().getDrawable(R.drawable.qq)).getBitmap();mBitDestTop = ((BitmapDrawable) this.getResources().getDrawable(R.drawable.desktop)).getBitmap();new Thread(this).start();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);canvas.drawColor(Color.BLACK);// 清屏canvas.drawBitmap(mBitqq, 0, 0, mPaint);this.DrawImage(canvas, mBitDestTop, movex, mBitqq.getHeight() + 2,mBitDestTop.getWidth(), mBitDestTop.getHeight(), 0,0);}@Overridepublic void run() {while (!Thread.interrupted()) {try {Thread.sleep(100);} catch (Exception ex) {ex.printStackTrace();Thread.currentThread().interrupt();}this.postInvalidate();}}/** * x:屏幕上的x坐标 y:屏幕上的y坐标 w:要绘制的图片的宽度 h:要绘制的图片的高度 bx:图片上的x坐标 by:图片上的y坐标 *  * @param canvas * @param mBitmap * @param x * @param y * @param w * @param h * @param bx * @param by */public void DrawImage(Canvas canvas, Bitmap mBitmap, int x, int y, int w,int h, int bx, int by) {Rect src = new Rect();// 图片裁剪区域Rect dst = new Rect();// 屏幕裁剪区域src.left = bx;src.top = by;src.right = bx + w;src.bottom = by + h;dst.left = x;dst.top = y;dst.right = x + w;dst.bottom = y + h;canvas.drawBitmap(mBitmap, src, dst, mPaint);src = null;dst = null;}public boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {if (this.movex > 0) {this.movex -= 5;}} else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {if (this.movex + this.mBitDestTop.getWidth() < this.DisplayWidth) {this.movex += 5;}}return super.onKeyDown(keyCode, event);}}

package com.Aina.Android;import android.app.Activity;import android.os.Bundle;import android.util.DisplayMetrics;import android.view.KeyEvent;public class Test_DrawBitmap extends Activity {    /** Called when the activity is first created. */private GameView gv = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        DisplayMetrics dm = new DisplayMetrics();        this.getWindowManager().getDefaultDisplay().getMetrics(dm);                gv = new GameView(this,dm.widthPixels,dm.heightPixels);        setContentView(gv);    }@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {return gv.onKeyDown(keyCode, event);}    }

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