首先使用ZXing项目前我们需要对其进行简化，因为开源的ZXing项目中Android实现里面有太多多余的东西了，得对其进行简化，并且原始的ZXing项目扫描框并不美观所以也要对其进行自定义美化。
在开始前大致介绍一下简化ZXing需要用到各个包 、类的职责。
详细简化过程参考博文“http://www.cnblogs.com/keyindex/archive/2011/06/08/2074900.html”
自定义扫描框需要修改ViewfinderView自定义的View类。绘制窗体方法在onDraw(Canvas canvas)方法中。
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@Override public
void onDraw(Canvas canvas) { Rect frame = CameraManager.get().getFramingRect(); if
(frame == null) { return; } // 初始化中间线滑动的最上边和最下边 if
(!isFirst) { isFirst = true; slideTop = frame.top; slideBottom = frame.bottom; } int
width = canvas.getWidth(); int
height = canvas.getHeight(); // Draw the exterior (i.e. outside the framing rect) darkened paint.setColor(resultBitmap != null
? resultColor : maskColor); canvas.drawRect(0, 0, width, frame.top, paint); canvas.drawRect(0, frame.top, frame.left, frame.bottom + 1, paint); canvas.drawRect(frame.right + 1, frame.top, width, frame.bottom + 1, paint); canvas.drawRect(0, frame.bottom + 1, width, height, paint); if
(resultBitmap != null) { // Draw the opaque result bitmap over the scanning rectangle paint.setAlpha(OPAQUE); canvas.drawBitmap(resultBitmap, frame.left, frame.top, paint); } else
{ // 画扫描框 paint.setColor(frameColor); canvas.drawRect(frame.left, frame.top, frame.right + 1, frame.top + 2, paint); canvas.drawRect(frame.left, frame.top + 2, frame.left + 2, frame.bottom - 1, paint); canvas.drawRect(frame.right - 1, frame.top, frame.right + 1, frame.bottom - 1, paint); canvas.drawRect(frame.left, frame.bottom - 1, frame.right + 1, frame.bottom + 1, paint); paint.setColor(laserColor); //画扫描框边上的角，总共8个部分 canvas.drawRect(frame.left, frame.top, frame.left + ScreenRate, frame.top + CORNER_WIDTH, paint); canvas.drawRect(frame.left, frame.top, frame.left + CORNER_WIDTH, frame.top + ScreenRate, paint); canvas.drawRect(frame.right - ScreenRate, frame.top, frame.right, frame.top + CORNER_WIDTH, paint); canvas.drawRect(frame.right - CORNER_WIDTH, frame.top, frame.right, frame.top + ScreenRate, paint); canvas.drawRect(frame.left, frame.bottom - CORNER_WIDTH, frame.left + ScreenRate, frame.bottom, paint); canvas.drawRect(frame.left, frame.bottom - ScreenRate, frame.left + CORNER_WIDTH, frame.bottom, paint); canvas.drawRect(frame.right - ScreenRate, frame.bottom - CORNER_WIDTH, frame.right, frame.bottom, paint); canvas.drawRect(frame.right - CORNER_WIDTH, frame.bottom - ScreenRate, frame.right, frame.bottom, paint); paint.setAlpha(SCANNER_ALPHA[scannerAlpha]); scannerAlpha = (scannerAlpha + 1) % SCANNER_ALPHA.length; //绘制中间的线,每次刷新界面，中间的线往下移动SPEEN_DISTANCE slideTop += SPEEN_DISTANCE; if(slideTop >= frame.bottom){ slideTop = frame.top; } canvas.drawRect(frame.left + MIDDLE_LINE_PADDING, slideTop - MIDDLE_LINE_WIDTH/2, frame.right - MIDDLE_LINE_PADDING,slideTop + MIDDLE_LINE_WIDTH/2, paint); Collection<ResultPoint> currentPossible = possibleResultPoints; Collection<ResultPoint> currentLast = lastPossibleResultPoints; if
(currentPossible.isEmpty()) { lastPossibleResultPoints = null; } else
{ possibleResultPoints = new
HashSet<ResultPoint>(5); lastPossibleResultPoints = currentPossible; paint.setAlpha(OPAQUE); paint.setColor(resultPointColor); for
(ResultPoint point : currentPossible) { canvas.drawCircle(frame.left + point.getX(), frame.top + point.getY(), 6.0f, paint); } } if
(currentLast != null) { paint.setAlpha(OPAQUE / 2); paint.setColor(resultPointColor); for
(ResultPoint point : currentLast) { canvas.drawCircle(frame.left + point.getX(), frame.top + point.getY(), 3.0f, paint); } } postInvalidateDelayed(ANIMATION_DELAY, frame.left, frame.top, frame.right, frame.bottom); } } |
利用开源ZXing项目实现条形码和二维码扫描识别 —— Android端,布布扣,bubuko.com
利用开源ZXing项目实现条形码和二维码扫描识别 —— Android端
原文：http://www.cnblogs.com/ggzjj/p/3612602.html