iOS生成带logo的二维码，区域截屏保存至相册（小功能二连发(一)）

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]] placeholderImage:[UIImage imageNamed:@ "placeholderImage_square" ]]; successShareView.namedLb.text = [_userDic objectForKey:@ "name" ]; ZXMultiFormatWriter *writer = [[ZXMultiFormatWriter alloc] init]; ZXEncodeHints *hints = [ZXEncodeHints hints]; hints.encoding = NSUTF8StringEncoding; hints.dataMatrixShape =ZXDataMatrixSymbolShapeHintForceSquare; hints.margin = [NSNumber numberWithInt:0.]; hints.errorCorrectionLevel = [ZXQRCodeErrorCorrectionLevel errorCorrectionLevelH]; NSString *qrString = [_userDic objectForKey:@ "url" ]; ZXBitMatrix *result = [writer encode:qrString format:kBarcodeFormatQRCode width:500 height:500 hints:hints error:nil]; if (result) { CGImageRef image = [[ZXImage imageWithMatrix:result] cgimage]; UIImage *image1 = [UIImage imageWithCGImage:image];//二维码原图 UIImage *subIamge = [UIImage imageNamed:@ "新签到切图logo@2x-X" ]; __weak typeof(self) weakSelf = self; successShareView.erweimaImageView.image =[weakSelf addSubImage:image1 sub:subIamge];//二维码里加图标，生成带logo的方法 // successShareView.erweimaImageView.image =image1;//生成不带logo的二维码的方法 } else

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