IOS Zbar SD二维码扫描的使用

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

[objc] view
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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];

}

[objc] view
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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);

}

[objc] view
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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];

}

#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];

}