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@interface IndEditorDetailViewController ()<UIWebViewDelegate, NJKWebViewProgressDelegate>
{
UIWebView *_webView;
UIProgressView *_progressView;
NJKWebViewProgress *_progressProxy;
}
@end
@implementation IndEditorDetailViewController
- (void)viewDidLoad {
_progressView = [[UIProgressView alloc] init];
_progressView.frame = CGRectMake(0, 0, 320, 10);
[self.view addSubview:_progressView];
_progressProxy = [[NJKWebViewProgress alloc] init];
_webView.delegate = _progressProxy;
_progressProxy.webViewProxyDelegate = self;
_progressProxy.progressDelegate = self;
}
- (void)webViewDidFinishLoad:(UIWebView *)webView{
// 一般获取网页高度会在这个方法里获取
// 但这里获取的高度未必就是web页面的真实高度,因为web中图片未加载完有可能导致web界面不真实,或长或短
// 你能可能用到下面的js方法去获取,但其实都没用
/**
1、document.documentElement.offsetHeight;
2、document.body.clientHeight;
3、document.documentElement.scrollHeight
4、
CGRect frame = webView.frame;
CGSize fittingSize = [webView sizeThatFits:CGSizeZero];
frame.size = fittingSize;
webView.frame = frame;
5、getBodyHeight() // 网页用js实现好的方法
6、CGFloat height = [[webView stringByEvaluatingJavaScriptFromString:@"document.body.clientHeight"] floatValue];
*/
// 所以必须要找到能完全确定web加载,才能确定web高度
// 在网上找了个工具 NJKWebViewProgress
}
#pragma mark - NJKWebViewProgressDelegate
-(void)webViewProgress:(NJKWebViewProgress *)webViewProgress updateProgress:(float)progress
{
if (progress == 0.0) {
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
_progressView.progress = 0;
[UIView animateWithDuration:0.27 animations:^{
_progressView.alpha = 1.0;
}];
}
if (progress == 1.0) {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[UIView animateWithDuration:0.27 delay:progress - _progressView.progress options:0 animations:^{
_progressView.alpha = 0.0;
// webView彻底加载完
CGFloat height = [[_webView stringByEvaluatingJavaScriptFromString:@"document.body.clientHeight"] floatValue];
CGRect frame = _webView.frame;
frame.size.height = height;
_webView.frame = frame;
} completion:nil];
}
[_progressView setProgress:progress animated:NO];
}
@end
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原文地址:http://blog.csdn.net/alincexiaohao/article/details/42458663