图片缓存&展示 Android9妹工具(9Patch)(程序源码).rar

package com.himi; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.NinePatch; import android.graphics.Paint; import android.graphics.RectF; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.SurfaceHolder.Callback; public class MySurfaceView extends SurfaceView implements Callback, Runnable { private Thread th = new Thread(this); private SurfaceHolder sfh; private Canvas canvas; private Paint paint; private Bitmap bmp_old; private Bitmap bmp_9path; private NinePatch np; public MySurfaceView(Context context) { super(context); this.setKeepScreenOn(true); bmp_old = BitmapFactory.decodeResource(getResources(), R.drawable.himi_old); bmp_9path = BitmapFactory.decodeResource(getResources(), R.drawable.himi_9path); np = new NinePatch(bmp_9path, bmp_9path.getNinePatchChunk(), null); //创建一个ninePatch的对象实例，第一个参数是bitmap、第二个参数是byte[]，这里其实要求我们传入 //如何处理拉伸方式，当然我们不需要自己传入，因为“.9.png”图片自身有这些信息数据， //也就是我们用“9妹”工具操作的信息！ 我们直接用“.9.png”图片自身的数据调用getNinePatchChunk()即可 //第三个参数是图片源的名称，这个参数为可选参数，直接null~就OK~ sfh = this.getHolder(); sfh.addCallback(this); paint = new Paint(); paint.setAntiAlias(true); setFocusable(true); } public void surfaceCreated(SurfaceHolder holder) { Log.v("Himi", "surfaceCreated"); th.start(); } /** * @author Himi */ public void draw() { canvas = sfh.lockCanvas(); canvas.drawColor(Color.BLACK); RectF rectf_old_two = new RectF(0, 50, bmp_old.getWidth() * 2, 120 + bmp_old.getHeight() * 2);//备注1 RectF rectf_old_third = new RectF(0, 120 + bmp_old.getHeight() * 2, bmp_old.getWidth() * 3, 140 + bmp_old.getHeight() * 2 + bmp_old.getHeight() * 3); // --------下面是对正常png绘画方法----------- canvas.drawBitmap(bmp_old, 0, 0, paint); canvas.drawBitmap(bmp_old, null, rectf_old_two, paint); canvas.drawBitmap(bmp_old, null, rectf_old_third, paint); RectF rectf_9path_two = new RectF(250, 50, 250 + bmp_9path.getWidth() * 2, 90 + bmp_9path.getHeight() * 2); RectF rectf_9path_third = new RectF(250, 120 + bmp_9path.getHeight() * 2, 250 + bmp_9path.getWidth() * 3, 140 + bmp_9path.getHeight() * 2 + bmp_9path.getHeight() * 3); canvas.drawBitmap(bmp_9path, 250, 0, paint); // --------下面是".9.png"图像的绘画方法----------- np.draw(canvas, rectf_9path_two); np.draw(canvas, rectf_9path_third); sfh.unlockCanvasAndPost(canvas); } public void run() { // TODO Auto-generated method stub while (true) { draw(); try { Thread.sleep(100); } catch (Exception ex) { } } } public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { Log.v("Himi", "surfaceChanged"); } public void surfaceDestroyed(SurfaceHolder holder) { Log.v("Himi", "surfaceDestroyed"); } }