使用web-view组件内嵌网页并去除网页title

(1) 使用web-view组件内嵌网页

实战示例：indexvue

(2) 去除网页title—页面不启用系统导航即可

示例：pagesjson

备注 ：常见问题请移步： web-view加载网络html页面的实现及问题

需要用到回调

webViewsetWebChromeClient(new WebChromeClient()

{

@Override

public void onReceivedTitle(WebView view, String aTitle)

{

// 设置当前activity的标题栏

titlesetText(aTitle);

superonReceivedTitle(view, aTitle);

}

});

WKWebView 的estimatedProgress和title 都是KVO模式，所以可以添加监听：

[webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:NULL];

[webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:NULL];

监听的实现方法：

- (void)observeValueForKeyPath:(NSString )keyPath ofObject:(id)object change:(NSDictionary )change context:(void )context {

if ([keyPath isEqualToString:@"estimatedProgress"]) {

if (object == webView) {

[selfprogressView setAlpha:10f];

[selfprogressView setProgress:selfcurrentSubViewwebViewestimatedProgress animated:YES];

if(selfcurrentSubViewwebViewestimatedProgress >= 10f) {

[UIView animateWithDuration:03 delay:03 options:UIViewAnimationOptionCurveEaseOut animations:^{

[selfprogressView setAlpha:00f];

} completion:^(BOOL finished) {

[selfprogressView setProgress:00f animated:NO];

}];

}

}

else

{

[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];

}

}

else if ([keyPath isEqualToString:@"title"])

{

if (object == selfwebView) {

selftitle = selfwebViewtitle;

}

else

{

[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];

}

}

else {

[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];

}

}

进度条增加了动画，类似safari的进度效果

注意销毁时一定要移除监听

[webView removeObserver:self forKeyPath:@"estimatedProgress"];

[webView removeObserver:self forKeyPath:@"title"];

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