Android刮奖控件，需要的直接拿去用

直接上效果图

功能特色：

1、可以设置刮开后显示文字或图片

2、可以统计已刮开区域所占百分比

下面是源码：

@SuppressLint("HandlerLeak")public class RubberView extends TextView {	private static final int W = 480;	private static final int H = 800;	private static final int MV = 1;	private static final int SW = 50;	private static final int MC = 0xFFD6D6D6;	private int mWidth;	private int mHeight;	private int mMaskColor;	private int mStrokeWidth;	private float mX;	private float mY;	private boolean mRun;	private boolean caculate;	private Path mPath;	private Paint mPaint;	private Paint mBitmapPaint;	private Canvas mCanvas;	private Bitmap mBitmap;	private int[] mPixels;	private Thread mThread;	private onWipeListener mWipeListener;	public RubberView(Context context) {		super(context);		init(context);	}	public RubberView(Context context, AttributeSet attrs) {		super(context, attrs);		init(context);	}	private final void init(Context context) {		mMaskColor = MC;		mStrokeWidth = SW;		mPath = new Path();		mBitmapPaint = new Paint();		mPaint = new Paint();		mPaint.setAntiAlias(true);// 抗锯齿		mPaint.setDither(true);// 递色		mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));		mPaint.setStyle(Paint.Style.STROKE);		mPaint.setStrokeJoin(Paint.Join.ROUND); // 前圆角		mPaint.setStrokeCap(Paint.Cap.ROUND); // 后圆角		mPaint.setStrokeWidth(mStrokeWidth); // 笔宽		mBitmap = Bitmap.createBitmap(W, H, Config.ARGB_8888);		mCanvas = new Canvas(mBitmap);		mCanvas.drawColor(mMaskColor);		mRun = true;		mThread = new Thread(mRunnable);		mThread.start();		setGravity(Gravity.CENTER);	}	@Override	protected void onDraw(Canvas canvas) {		super.onDraw(canvas);		mCanvas.drawPath(mPath, mPaint);		canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);	}	@Override	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {		super.onMeasure(widthMeasureSpec, heightMeasureSpec);		int w = MeasureSpec.getSize(widthMeasureSpec);		int h = MeasureSpec.getSize(heightMeasureSpec);		if (w > 0 && h > 0) {			mWidth = w;			mHeight = h;		}	}	public void reset() {		mPath.reset();		mCanvas.drawPaint(mPaint);		mCanvas.drawColor(mMaskColor);		invalidate();	}	public void setOnWipeListener(onWipeListener listerer) {		this.mWipeListener = listerer;	}	public void setStrokeWidth(int width) {		this.mStrokeWidth = width;		mPaint.setStrokeWidth(width);	}	public void setMaskColor(int color) {		this.mMaskColor = color;		reset();	}	@Override	public boolean onTouchEvent(MotionEvent event) {		boolean invalidate = false;		boolean consume = false;		int action = event.getAction();		switch (action) {		case MotionEvent.ACTION_DOWN:			consume = true;			touchDown(event);			break;		case MotionEvent.ACTION_MOVE:			consume = true;			invalidate = touchMove(event);			break;		case MotionEvent.ACTION_UP:			consume = true;			touchUp(event);			break;		}		if (invalidate) {			invalidate();		}		if (consume) {			return true;		}		return super.onTouchEvent(event);	}	// 手指点下屏幕时调用	private void touchDown(MotionEvent event) {		caculate = false;		// 重置绘制路线，即隐藏之前绘制的轨迹		mPath.reset();		float x = event.getX();		float y = event.getY();		mX = x;		mY = y;		// mPath绘制的绘制起点		mPath.moveTo(x, y);	}	// 手指在屏幕上滑动时调用	private boolean touchMove(MotionEvent event) {		caculate = false;		final float x = event.getX();		final float y = event.getY();		final float previousX = mX;		final float previousY = mY;		// 设置贝塞尔曲线的操作点为起点和终点的一半		float cX = (x + previousX) / 2;		float cY = (y + previousY) / 2;		final float dx = Math.abs(x - previousX);		final float dy = Math.abs(y - previousY);		boolean move = false;		if (dx >= MV || dy >= MV) {			// 二次贝塞尔，实现平滑曲线；cX, cY为操作点 x,y为终点			mPath.quadTo(cX, cY, x, y);			// 第二次执行时，第一次结束调用的坐标值将作为第二次调用的初始坐标值			mX = x;			mY = y;			move = true;		}		return move;	}	private void touchUp(MotionEvent event) {		caculate = true;		mRun = true;	}	private Runnable mRunnable = new Runnable() {		@Override		public void run() {			while (mRun) {				SystemClock.sleep(100);				// 收到计算命令，立即开始计算				if (caculate) {					caculate = false;					int w = mWidth;					int h = mHeight;					float wipeArea = 0;					float totalArea = w * h;					// 计算耗时100毫秒左右					Bitmap bitmap = mBitmap;					if (mPixels == null) {						mPixels = new int[w * h];					}					bitmap.getPixels(mPixels, 0, w, 0, 0, w, h);					for (int i = 0; i < w; i++) {						for (int j = 0; j < h; j++) {							int index = i + j * w;							if (mPixels[index] == 0) {								wipeArea++;							}						}					}					if (wipeArea > 0 && totalArea > 0) {						int percent = (int) (wipeArea * 100 / totalArea);						Message msg = mHandler.obtainMessage();						msg.what = 0x1;						msg.arg1 = percent;						mHandler.sendMessage(msg);					}				}			}		}	};	private Handler mHandler = new Handler() {		public void handleMessage(Message msg) {			if (mWipeListener != null) {				int percent = msg.arg1;				mWipeListener.onWipe(percent);			}		};	};	public interface onWipeListener {		public void onWipe(int percent);	}		@Override	protected void onDetachedFromWindow() {		super.onDetachedFromWindow();		mRun = false;	}}

RubberDemo.rar