创建 UIView 图像时出现问题

发布于 2024-09-08 00:17:11 字数 611 浏览 4 评论 0原文

我想创建 UIWebView 的 UIImage，然后绘制该图像。

这是我的代码：

    UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 768, 1004)];
 tempView.backgroundColor = [UIColor blueColor];

 UIGraphicsBeginImageContext(tempView.bounds.size);
    [tempView drawRect:tempView.bounds];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext(); 
 CGRect imageRect = CGRectMake(0, 0, image.size.width, image.size.height);
 CGContextDrawImage(ctx, imageRect, [image CGImage]);

但它除了空白页之外没有绘制任何内容。我们不能像那样创建 UIImage 还是我在代码中的某个地方做错了什么？

谢谢

原文

I want to create an UIImage of UIWebView and then I want to draw that image.

Here is my code:

    UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 768, 1004)];
 tempView.backgroundColor = [UIColor blueColor];

 UIGraphicsBeginImageContext(tempView.bounds.size);
    [tempView drawRect:tempView.bounds];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext(); 
 CGRect imageRect = CGRectMake(0, 0, image.size.width, image.size.height);
 CGContextDrawImage(ctx, imageRect, [image CGImage]);

but its not drawing anything other than a blank page. Cant we create UIImage like that or Am I doing something wrong somewhere in the code.

Thanx

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人生戏 2024-09-15 00:17:11

下一个代码应该可以工作：

UIGraphicsBeginImageContext(tempView.bounds.size);
[tempView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

The next code should work:

UIGraphicsBeginImageContext(tempView.bounds.size);
[tempView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

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