@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
</uiwebviewdelegate,>
