iphone - 如何将UIView的部分转换为UIImage并在imageView中显示

Question

我有一个正在绘制签名的 View ，我希望 View 的签名部分应转换为 UIImage然后显示在UIImageView这是我从用于转换的网络获得的代码

    UIGraphicsBeginImageContext(signatureView.bounds.size);
   [signatureView.layer renderInContext:UIGraphicsGetCurrentContext()];
   UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
   logoImageView.image=img;
   UIGraphicsEndImageContext();

Answer 1

试试这个希望对你有帮助。

 - (UIImage *) getUIImageWithmyView:(UImyView *)myView
    {
        UIGraphicsBeginImageContextWithOptions(myView.bounds.size, myView.opaque, 0.0);
        [myView.layer renderInContext:UIGraphicsGetCurrentContext()];

        UIImage * myImage = UIGraphicsGetImageFromCurrentImageContext();

        UIGraphicsEndImageContext();

        return myImage;
    }