ios开发之UIWebView自适应高度例子

UIWebView使用时当无法确切的设置一个固定的高度时，就需要根据网页内容来自适应高度了，参考代码如下：

//
// ViewController.m
// UIwebView高度自适应
//
// Created by mac on 16/3/18.
// Copyright © 2016年 ZMIT. All rights reserved.
//

#import "ViewController.h"

@interface ViewController (){
UIWebView *myWebView;
}

@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor grayColor];
myWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 100, [UIScreen mainScreen].bounds.size.width, 30)];
myWebView.delegate = self;
myWebView.scrollView.delegate = self;
myWebView.scalesPageToFit = YES;//自动对页面进行缩放以适应屏幕
[self.view addSubview:myWebView];

NSURL *url = [NSURL URLWithString:@"https://www.111cn.net/"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[myWebView loadRequest:request];
}
#pragma mark - 代理方法
-(void)webViewDidFinishLoad:(UIWebView *)webView{
CGFloat webViewdocument.body.offsetHeight"]floatValue];
CGRect newFrame = webView.frame;
newFrame.size.height = webViewHeight;
webView.frame = newFrame;
//重新设置webView的contentSize
myWebView.scrollView.contentSize = newFrame.size;
//如果WebView块下面还有其他的控件，可在此处根据myWebView设置其frame
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end