UIButton 内的 UIActivityIndi​​catorView [英] UIActivityIndicatorView inside UIButton

问题描述

我有几个以编程方式生成的 UIButton(自定义，200 x 200，白色背景)，我想在其中放置一个 UIActivityIndi​​catorView.我用下面的代码试了一下:

UIActivityIndi​​catorView *playlistImageLoader = [[UIActivityIndi​​catorView alloc] initWithActivityIndi​​catorStyle:UIActivityIndi​​catorViewStyleWhite];playlistImageLoader.center = CGPointMake(100, 100);playlistImageLoader.hidesWhenStopped = YES;[playlistImage addSubview:playlistImageLoader];[mainScrollView addSubview:playlistImage];[playlistImageLoader startAnimating];

但它没有出现?有什么想法吗?

谢谢！

解决方案

你没有设置指示器框架，设置它作为按钮子视图就可以了.>

尝试使用 UIActivityIndi​​catorViewStyleGray - UIActivityIndi​​catorViewStyleWhite 在白色背景上是不可见的.

I have a couple of programmatically generated UIButtons (custom, 200 by 200, white background) where i wanted to put a UIActivityIndicatorView inside. I tried it with the following code:

UIActivityIndicatorView *playlistImageLoader = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
playlistImageLoader.center = CGPointMake(100, 100);
playlistImageLoader.hidesWhenStopped = YES;

[playlistImage addSubview:playlistImageLoader];
[mainScrollView addSubview:playlistImage];

[playlistImageLoader startAnimating];

But it doesn't show up? Have any ideas?

thanks!

解决方案

You didn't set the indicator frame, set it and it will be alright to have it as a button subview.

Try to use UIActivityIndicatorViewStyleGray - UIActivityIndicatorViewStyleWhite is invisible on the white background.

这篇关于UIButton 内的 UIActivityIndi​​catorView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IT屋！