iOS uiwebview 大小跟随内容自适应

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- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

NSString *str=@"<body><div id='webview_content_wrapper'>jhkhkjhkjhk<img src='f_static_002.gif' style='width=14px;height=14px;'>jhkjjhkh kjhkjhk<img src='f_static_002.gif' style='width=14px;height=14px;'>jhk jjhkhk jhkjhk<img src='f_static_002.gif' style='width=14px;height=14px;'>jhkjhj</div></body>";

[_webloadHTMLString:str baseURL:[NSURLfileURLWithPath:[[NSBundlemainBundle] resourcePath] ]];

_web.scrollView.bounces =NO;

_web.scrollView.showsHorizontalScrollIndicator =NO;

_web.scrollView.scrollEnabled =NO;

// _web.delegate=self;

[_websizeToFit];

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3 * NSEC_PER_SEC)),dispatch_get_main_queue(), ^{

// [_web sizeToFit];

_web.frame=CGRectMake(0,0, _web.frame.size.width,1);

CGSize s=[_websizeThatFits:CGSizeZero];

NSLog(@"%g %g ",s.width,s.height);

CGRect r=_web.frame;

NSLog(@"%g %g %g %g",r.origin.x,r.origin.y,r.size.width,r.size.height);

r.size=s;

_web.frame=r;

NSLog(@"%g %g %g %g",r.origin.x,r.origin.y,r.size.width,r.size.height);

self.view.backgroundColor=[UIColorblueColor];

});

}

也可以在webViewDidFinishLoad:(UIWebView *)webView用延后执行的效果。不过这个经常不准

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