iOS 计算webview高度

最新推荐文章于 2020-10-19 19:00:04 发布

原创最新推荐文章于 2020-10-19 19:00:04 发布 · 660 阅读

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本文介绍了一个iOS应用中使用UIWebView来加载和显示HTML内容的方法。实现了WebView的初始化配置、HTML字符串的加载及页面加载完成后的处理。此外，还介绍了如何通过JavaScript获取网页的实际高度以适配WebView。

#import "SubjectViewController.h"@interface SubjectViewController ()@property(nonatomic, strong)UIWebView *webView;@end@implementation SubjectViewController- (void)viewDidLoad { [super viewDidLoad]; self.webView = [self createWeb]; [self.view addSubview:self.webView] ; NSString *htmlString = [NSString stringWithFormat:@"%@", self.info[@"question_html"]]; [self loadHTML:htmlString];}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning];}- (void)unloadData { self.webView = nil;}- (void)loadHTML:(NSString *)html { [self.webView loadHTMLString:html baseURL:nil];}- (UIWebView *)createWeb { UIWebView *web =[[UIWebView alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, 1)]; web.delegate = self; web.scalesPageToFit = NO; [web.scrollView setShowsHorizontalScrollIndicator:NO]; [web.scrollView setShowsVerticalScrollIndicator:NO]; return web;}- (void)webViewDidFinishLoad:(UIWebView *)webView{ NSString *htmlString = [NSString stringWithFormat:@"%@", self.info[@"question_html"]]; DDLog(@"%@",htmlString); CGFloat documentHeight = [[webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"] floatValue]; DDLog(@"%f", documentHeight); self.webView.frame = CGRectMake(0, 0, kScreenWidth, documentHeight); //document.body.scrollHeight}@end