ios - UIwebView顶部进度条怎么实现的?

Question

UIwebView顶部进度条怎么实现的？有现成的开源库吗？
目前用的是SVProgressHUD ，他好像只能在屏幕中间显示一个圈圈。。

Answer 1

The system has a progress bar control UIProgressView. It is also very simple to customize a view yourself.
Those progress bars on WeChat are all fake, not real progress. If you turn off the gateway, it will still reach 80~90%

Answer 2

WKWebView has estimatedProgress attribute
UIWebView does not but can use NJKWebViewProgress, of course WK can also use NJK
I wrote a base class myself, use wk for ios8 and above, otherwise UI, github address https://github.com/yuqingzhud...
You should be able to find what you want

Answer 3

SVProgressHUD, it just shows whether loading is complete.
Use this NJKWebViewProgress. There is an address in it

Answer 4

https://github.com/ninjinkun/...
If compatibility with iOS7 is not considered, then KVO operation on the estimatedProgress attribute of WKWebview can also monitor the progress

[wkWebView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:nil];

Answer 5

UIWebview does not support progress bar, iOS 8 or above can use WkWebview

Answer 6

If there is a callback after the loading is completed, make a fake progress. After completing the callback, just set the progress to 100%

Answer 7

On Apple phones, except for Safari’s progress bar, which is real, everything else is fake
Customize a view with a height of 2 and change its width in the animation