Android中利用画图类和线程画出闪烁的心形，android心形,package com.

Android中利用画图类和线程画出闪烁的心形，android心形,package com.

package com.tt.view;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.RectF;import android.graphics.Typeface;import android.view.SurfaceHolder;import android.view.SurfaceView;public class Love  extends SurfaceView implements SurfaceHolder.Callback,Runnable{    boolean mbloop = false;    SurfaceHolder mSurfaceHolder = null;    private Canvas canvas;    int minCount  = 0;    int y = 50;    public Love(Context context)     {        super(context);        mSurfaceHolder = this.getHolder();        mSurfaceHolder.addCallback(this);        this.setFocusable(true);        this.setKeepScreenOn(true);        mbloop = true;    }    @Override    public void run()    {        // TODO Auto-generated method stub        while(mbloop)        {            try            {                Thread.sleep(200);            } catch (Exception e) {                // TODO: handle exception            }            synchronized (mSurfaceHolder)             {                draw();            }        }    }    @Override    public void surfaceChanged(SurfaceHolder holder, int format, int width,            int height) {        // TODO Auto-generated method stub    }    @Override    public void surfaceCreated(SurfaceHolder holder)    {        // TODO Auto-generated method stub        new Thread(this).start();    }    @Override    public void surfaceDestroyed(SurfaceHolder holder)    {        // TODO Auto-generated method stub        mbloop = false;    }    private void draw()    {        canvas = mSurfaceHolder.lockCanvas();        try        {            if(mSurfaceHolder == null || canvas == null)            {                return;            }            if(minCount < 100)            {                minCount ++;            }            else            {                minCount = 0;            }            Paint paint = new Paint();            paint.setAntiAlias(true);            paint.setColor(Color.BLACK);            canvas.drawRect(0, 0,320,480,paint);            switch (minCount % 6)             {            case 0:                paint.setColor(Color.YELLOW);                break;            case 1:                paint.setColor(Color.BLUE);                break;            case 2:                paint.setColor(Color.GREEN);                break;            case 3:                paint.setColor(Color.RED);                break;            case 4:                paint.setColor(Color.argb(255, 255, 181, 216));                break;            case 5:                 paint.setColor(Color.argb(255, 0, 255, 255));                break;            default:                break;            }            int i, j;            double x, y, r;            for (i = 0; i <= 90; i++) {                for (j = 0; j <= 90; j++) {                    r = Math.PI / 45 * i * (1 - Math.sin(Math.PI / 45 * j))                    * 20;                    x = r * Math.cos(Math.PI / 45 * j)                    * Math.sin(Math.PI / 45 * i) + 320 / 2;                    y = -r * Math.sin(Math.PI / 45 * j) + 400 / 4;                    canvas.drawPoint((float) x, (float) y, paint);                }            }            paint.setTextSize(32);            paint.setTypeface(Typeface.create(Typeface.SERIF, Typeface.ITALIC));            RectF rect = new RectF(60, 400, 260, 405);            canvas.drawRoundRect(rect, (float) 1.0, (float) 1.0, paint);            canvas.drawText("Loving You", 75, 400, paint);            mSurfaceHolder.unlockCanvasAndPost(canvas);        }         catch (Exception e)        {            // TODO: handle exception        }    }}package com.tt.view;import android.app.Activity;import android.os.Bundle;public class GameMainActivity  extends Activity {    private Love love;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState)     {        super.onCreate(savedInstanceState);        this.love = new Love(this);        setContentView(love);    }}//该片段来自于http://byrx.net