1.控制器之間跳轉出現(xiàn)一閃或感覺一卡現(xiàn)象

為控制器的基view設置個背景色即可解決。

2.UITableViewCell/UICollectionCell選中UILabel等背景色消失

• 想要點擊Cell依然有高亮效果，在Cell中寫入

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];
    //自己的label及自己要設置的label背景色
    self.messageLabel.backgroundColor = [UIColor redColor] ;
}

- (void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated {
    [super setHighlighted:highlighted animated:animated];
    //自己的label及自己要設置的label背景色
    self.messageLabel.backgroundColor = [UIColor redColor] ;
}

• 想要點擊Cell沒有高亮效果，只需設置cell

cell.selectionStyle = UITableViewCellSelectionStyleNone;

3.掃描相冊中圖片無法識別二維碼

通過別人博客，實踐出把圖片縮小成 256 像素左右識別率比較高，像我掃描二維碼用的第三方SGQRCode，在SGQRCodeObtain.m中加上

- (UIImage *)hkChangeImage:(UIImage *)theImage {
    UIImage* bigImage = theImage;
    float actualHeight = bigImage.size.height;
    float actualWidth = bigImage.size.width;
    float newWidth =0;
    float newHeight =0;
    if(actualWidth > actualHeight) {
    //寬圖
    newHeight =256.0f;
    newWidth = actualWidth / actualHeight * newHeight;
    }
    else
    {
    //長圖
    newWidth = 256.0f;
    newHeight = actualHeight / actualWidth * newWidth;
    }
    CGRect rect = CGRectMake(0.0,0.0, newWidth, newHeight);
    UIGraphicsBeginImageContext(rect.size);
    [bigImage drawInRect:rect];// scales image to rect
    theImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    //RETURN
    return theImage;
}

然后在- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info方法中在333行重新寫如下代碼

// 獲取識別結果
NSArray *features = [detector featuresInImage:[CIImage imageWithCGImage:[self hkChangeImage:image].CGImage]];

此解決參考http://www.itdecent.cn/p/6d4615ad1a72

4. The linked framework 'Pods_OCDemo.framework' is missing one or more architectures required by this target: arm64.

即SDK僅支持真機運行，要用真機跑