android zbar二维码扫描(中文不乱码)

感谢大神总结的zbar文章：android利用zbar二维码扫描-(解决中文乱码及扫描区域定义)

还有大神的工程：android_zbar二维码扫描

前段时间用zxing做的二维码扫描，中间遇到一个头疼的问题的时候，ios同事说我用的zbar，当时只是查了查android也有，今天有时间看了看zbar

zbar跟zxing的比较:

1、扫描速度来说zbar貌似略胜一筹（没有进行过多的测试，下结论有点早）

2、集成时间来讲zbar也更快一些，除了jar，几个so库，java文件只有一个

3、zbar没有生成二维码功能

如果只做二维码扫描，zbar更简单省事儿一些

开头提到了笔者是通过上面大神的文章才开始了解zbar

zbar只有一个java文件，Viewfinder.java

看了代码之后感觉边框通过图片来加载有点死板，.9图片也可以对于边框和四个角笔者更倾向于直接画出来，想zxing那样

import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Rect;import android.graphics.drawable.Drawable;import android.util.AttributeSet;import android.view.View;/** * 查找框 *  * @author niexiaoqiang */public class FinderView extends View {private static final long ANIMATION_DELAY = 100L;private Paint finderMaskPaint;private int measureedWidth;private int measureedHeight;/** * 手机的屏幕密度 */private static float density;/** * 四个绿色边角对应的长度 */private int ScreenRate;/** * 四个绿色边角对应的宽度 */private static final int CORNER_WIDTH = 5;/** * 边框颜色 */private int middleRectColor;private int maskColor;public FinderView(Context context) {super(context);init(context);}public FinderView(Context context, AttributeSet attrs) {super(context, attrs);init(context);}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);//canvas.drawRect(leftRect, finderMaskPaint);//canvas.drawRect(topRect, finderMaskPaint);//canvas.drawRect(rightRect, finderMaskPaint);//canvas.drawRect(bottomRect, finderMaskPaint);// 画框(此方法是通过图片画出 看起来比较死板,在此参照zxing画边方法)// zx_code_kuang.setBounds(middleRect);// zx_code_kuang.draw(canvas);// 获取屏幕的宽和高int width = canvas.getWidth();int height = canvas.getHeight();// 画出扫描框外面的阴影部分，共四个部分，扫描框的上面到屏幕上面，扫描框的下面到屏幕下面// 扫描框的左边面到屏幕左边，扫描框的右边到屏幕右边// Draw the exterior (i.e. outside the framing rect) darkenedfinderMaskPaint.setColor(maskColor);canvas.drawRect(0, 0, width, middleRect.top, finderMaskPaint);canvas.drawRect(0, middleRect.top, middleRect.left, middleRect.bottom + 1, finderMaskPaint);canvas.drawRect(middleRect.right + 1, middleRect.top, width, middleRect.bottom + 1,finderMaskPaint);canvas.drawRect(0, middleRect.bottom + 1, width, height, finderMaskPaint);/* * zxing 画扫描框边上的角，总共8个部分 */finderMaskPaint.setColor(Color.GREEN);canvas.drawRect(middleRect.left, middleRect.top, middleRect.left+ ScreenRate, middleRect.top + CORNER_WIDTH, finderMaskPaint);canvas.drawRect(middleRect.left, middleRect.top, middleRect.left+ CORNER_WIDTH, middleRect.top + ScreenRate, finderMaskPaint);canvas.drawRect(middleRect.right - ScreenRate, middleRect.top,middleRect.right, middleRect.top + CORNER_WIDTH,finderMaskPaint);canvas.drawRect(middleRect.right - CORNER_WIDTH, middleRect.top,middleRect.right, middleRect.top + ScreenRate, finderMaskPaint);canvas.drawRect(middleRect.left, middleRect.bottom - CORNER_WIDTH,middleRect.left + ScreenRate, middleRect.bottom,finderMaskPaint);canvas.drawRect(middleRect.left, middleRect.bottom - ScreenRate,middleRect.left + CORNER_WIDTH, middleRect.bottom,finderMaskPaint);canvas.drawRect(middleRect.right - ScreenRate, middleRect.bottom- CORNER_WIDTH, middleRect.right, middleRect.bottom,finderMaskPaint);canvas.drawRect(middleRect.right - CORNER_WIDTH, middleRect.bottom- ScreenRate, middleRect.right, middleRect.bottom,finderMaskPaint);if (lineRect.bottom < middleRect.bottom) {zx_code_line.setBounds(lineRect);lineRect.top = lineRect.top + lineHeight / 2;lineRect.bottom = lineRect.bottom + lineHeight / 2;} else {lineRect.set(middleRect);lineRect.bottom = lineRect.top + lineHeight;zx_code_line.setBounds(lineRect);}zx_code_line.draw(canvas);postInvalidateDelayed(ANIMATION_DELAY, middleRect.left, middleRect.top,middleRect.right, middleRect.bottom);}private Rect topRect = new Rect();private Rect bottomRect = new Rect();private Rect rightRect = new Rect();private Rect leftRect = new Rect();private Rect middleRect = new Rect();private Rect lineRect = new Rect();private Drawable zx_code_kuang;private Drawable zx_code_line;private int lineHeight;private void init(Context context) {int finder_mask = context.getResources().getColor(R.color.finder_mask);finderMaskPaint = new Paint();finderMaskPaint.setColor(finder_mask);zx_code_kuang = context.getResources().getDrawable(R.drawable.zx_code_kuang);zx_code_line = context.getResources().getDrawable(R.drawable.zx_code_line);lineHeight = 30;// 获取屏幕密度density = context.getResources().getDisplayMetrics().density;// 计算当前屏幕密度下边框的厚度ScreenRate = (int) (15 * density);// 获取边框颜色资源middleRectColor = context.getResources().getColor(R.color.viewfinder_frame);maskColor = context.getResources().getColor(R.color.viewfinder_mask);}// ////////////新增该方法///////////////////////** * 根据图片size求出矩形框在图片所在位置，tip：相机旋转90度以后，拍摄的图片是横着的，所有传递参数时，做了交换 *  * @param w * @param h * @return */public Rect getScanImageRect(int w, int h) {// 先求出实际矩形Rect rect = new Rect();rect.left = middleRect.left;rect.right = middleRect.right;float temp = h / (float) measureedHeight;rect.top = (int) (middleRect.top * temp);rect.bottom = (int) (middleRect.bottom * temp);return rect;}// //////////////////////////////////@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec);measureedWidth = MeasureSpec.getSize(widthMeasureSpec);measureedHeight = MeasureSpec.getSize(heightMeasureSpec);int borderWidth = measureedWidth / 2 + 100;middleRect.set((measureedWidth - borderWidth) / 2,(measureedHeight - borderWidth) / 2,(measureedWidth - borderWidth) / 2 + borderWidth,(measureedHeight - borderWidth) / 2 + borderWidth);lineRect.set(middleRect);lineRect.bottom = lineRect.top + lineHeight;leftRect.set(0, middleRect.top, middleRect.left, middleRect.bottom);topRect.set(0, 0, measureedWidth, middleRect.top);rightRect.set(middleRect.right, middleRect.top, measureedWidth,middleRect.bottom);bottomRect.set(0, middleRect.bottom, measureedWidth, measureedHeight);}}

大喊一声：开源万岁！

zbar跟zxing的比较:

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