问题描述
我有一个 UIView ，它有一个图像和一些按钮作为其子视图。我想使用 renderInContext 或其他方法获取它的快照图像。
I have a UIView that has an image and some buttons as its subviews. I'd like to get a "snapshot" image of it using renderInContext, or other method.
[clefView.layer renderInContext:mainViewContentContext];
如果我传递给我 UIView （如上面）然后我得到一个空白的位图。没有子项被渲染到位图中。
If I pass it my UIView (as above) then I get a blank bitmap. None of the children are rendered into the bitmap.
如果我传递了作为图像的子视图，那么我得到一个该位图的图像，并且毫不奇怪，没有它的兄弟（按钮）。
If I pass it the child view that is the image, then I get an image of that bitmap, and, unsurprisingly, none of its siblings (buttons).
我有点希望 renderInContext 将图像及其所有可见子项渲染成位图。有没有人有任何想法如何做到这一点？
I was sort of hoping that renderInContext would take the image and all it's visible children and render it into a bitmap. Has anyone have any ideas how to do this?
推荐答案
尝试这样的事情：
UIGraphicsBeginImageContext(clefView.bounds.size);
[clefView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
这篇关于用它的孩子渲染UIView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！