当我的App运行时，如何以编程方式获取LIVE屏幕截图？

Question

I just want to share a screen shoot of an UIView vie email, FB or what ever users want! The below code only takes a original of UIView with no inputed texts nor changed images

CGRect rect = [mainView bounds];
    UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);
    CGContextRef context = UIGraphicsGetCurrentContext();
    [mainView.layer renderInContext:context];
    UIImage *capturedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

Answer 1

您应该能够使用此答案中的一种解决方案，具体取决于它是否是视网膜设备。