WKWebView进度及title
WKWebView进度及title
WKWebView 的estimatedProgress和title 都是KVO模式，所以可以添加监控：
[webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:NULL];
[webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:NULL];
监控的实现方法：
- (void)observeva lueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if ([keyPath isEqualToString:@"estimatedProgress"]) {
if (object == webView) {
[self.progressView setAlpha:1.0f];
[self.progressView setProgress:self.currentSubView.webView.estimatedProgress animated:YES];
if(self.currentSubView.webView.estimatedProgress >= 1.0f) {
[UIView animateWithDuration:0.3 delay:0.3 options:UIViewAnimationOptionCurveEaseOut animations:^{
[self.progressView setAlpha:0.0f];
} completion:^(BOOL finished) {
[self.progressView setProgress:0.0f animated:NO];
}];
}
}
else
{
[super observeva lueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
else if ([keyPath isEqualToString:@"title"])
{
if (object == self.webView) {
self.title = self.webView.title;
}
else
{
[super observeva lueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
else {
[super observeva lueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
这里的进度增加了动画，类似safari的进度效果
需要注意的是销毁的时候一定要移除监控
[webView removeObserver:self forKeyPath:@"estimatedProgress"];
[webView removeObserver:self forKeyPath:@"title"];
swift:
// 监听
theWebView?.addObserver(self, forKeyPath: "estimatedProgress", options: NSKeyValueObservingOptions.New, context: nil)
theWebView?.addObserver(self, forKeyPath: "title", options: NSKeyValueObservingOptions.New, context: nil)
override func observeva lueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
if keyPath == "estimated