之前在Android中使用过ZXing识别二维码，ZXing也有对应的iOS版本，经过了解，ZBar也是一个常用的二维码识别软件，并分别提供了iOS和Android的SDK可供使用，最终我选择了ZBar进行二维码识别，它的注释清晰，便于使用。
ZBar为我们提供了两种使用方式，一种是直接调用ZBar提供的ZBarReaderViewController打开一个扫描界面，另一种方式是使用ZBar提供的可以嵌在其他视图中的ZBarReaderView，实际项目中我们更可能会使用第二种方式，这可以让我们对界面做更多的定制。
ZBar使用起来也非常简单，将ZBarSDK导入项目，在需要使用ZBar的文件中导入ZBarSDK.h头文件即可
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#pragma mark 初始化扫描- (void)InitScan{ readview = [ZBarReaderView new]; readview.backgroundColor = [UIColor clearColor]; readview.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); readview.readerDelegate = self; readview.allowsPinchZoom = YES;//使用手势变焦 readview.trackingColor = [UIColor redColor]; readview.showsFPS = NO;// 显示帧率 YES 显示 NO 不显示 //readview.scanCrop = CGRectMake(0, 0, 1, 1);//将被扫描的图像的区域 UIImage *hbImage=[UIImage imageNamed:@"pick_bg.png"]; scanZomeBack=[[UIImageView alloc] initWithImage:hbImage]; //添加一个背景图片 CGRect mImagerect=CGRectMake((readview.frame.size.width-200)/2.0, (readview.frame.size.height-200)/2.0, 200, 200); [scanZomeBack setFrame:mImagerect]; readview.scanCrop = [self getScanCrop:mImagerect readerViewBounds:readview.bounds];//将被扫描的图像的区域 [readview addSubview:scanZomeBack]; [readview addSubview:readLineView]; [self.view addSubview:readview]; [readview start];} |
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#pragma mark 获取扫描区域-(CGRect)getScanCrop:(CGRect)rect readerViewBounds:(CGRect)readerViewBounds{ CGFloat x,y,width,height; x = rect.origin.x / readerViewBounds.size.width; y = rect.origin.y / readerViewBounds.size.height; width = rect.size.width / readerViewBounds.size.width; height = rect.size.height / readerViewBounds.size.height; return CGRectMake(x, y, width, height);} |
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#pragma mark 扫描动画-(void)loopDrawLine{ CGRect rect = CGRectMake(scanZomeBack.frame.origin.x, scanZomeBack.frame.origin.y, scanZomeBack.frame.size.width, 2); if (readLineView) { [readLineView removeFromSuperview]; } readLineView = [[UIImageView alloc] initWithFrame:rect]; [readLineView setImage:[UIImage imageNamed:@"line.png"]]; [UIView animateWithDuration:3.0 delay: 0.0 options: UIViewAnimationOptionCurveEaseIn animations:^{ //修改fream的代码写在这里 readLineView.frame =CGRectMake(scanZomeBack.frame.origin.x, scanZomeBack.frame.origin.y+scanZomeBack.frame.size.height, scanZomeBack.frame.size.width, 2); [readLineView setAnimationRepeatCount:0]; } completion:^(BOOL finished){ if (!is_Anmotion) { [self loopDrawLine]; } }]; [readview addSubview:readLineView];} |
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#pragma mark 获取扫描结果- (void)readerView:(ZBarReaderView *)readerView didReadSymbols:(ZBarSymbolSet *)symbols fromImage:(UIImage *)image{ // 得到扫描的条码内容 const zbar_symbol_t *symbol = zbar_symbol_set_first_symbol(symbols.zbarSymbolSet); NSString *symbolStr = [NSString stringWithUTF8String: zbar_symbol_get_data(symbol)]; if (zbar_symbol_get_type(symbol) == ZBAR_QRCODE) { // 是否QR二维码 } for (ZBarSymbol *symbol in symbols) { [sTxtField setText:symbol.data]; break; } [readerView stop]; [readerView removeFromSuperview];} |
github地址:https://github.com/ZBar/ZBar
以上所述是小编给大家介绍的iOS中使用ZBar扫描二维码自定义扫描界面，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://blog.csdn.net/poplar_b/article/details/54970393
