iOS中使用ZBar扫描二维码自定义扫描界面功能

#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];}

#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);}

#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];}

#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];}