WebView

最新推荐文章于 2025-03-25 19:51:22 发布

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本文介绍了一个使用Objective-C实现的iOS应用中WebView加载网页的方法。在UIViewController的子类中，通过初始化UIWebView并设置其代理来加载指定URL的网页。同时，展示了如何监听WebView的加载开始、完成和失败事件。

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#import "WebViewController.h"

@interface WebViewController ()<UIWebViewDelegate>

@end

@implementation WebViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.title = @"WebView";
    self.edgesForExtendedLayout = UIRectEdgeNone;
    [self initView];
}

-(void)initView{
   
    UIImageView* imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight)];
    [imageView setImage:[UIImage imageNamed:@"guide_1"]];
    [self.view addSubview:imageView];
    
    UIWebView* webView = [[UIWebView alloc]initWithFrame:[UIScreen mainScreen].bounds];
    [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.baidu.com"]]];
    [self.view addSubview:webView];
    
    //加载本地资源
//    NSURL* url = [NSURL fileURLWithPath:filePath];
//    NSURLRequest* request = [NSURLRequest requestWithURL:url];
//    [webView loadRequest:request];
    
    webView.scalesPageToFit = YES;
    webView.backgroundColor = [UIColor clearColor];
    webView.opaque = NO;//是否是不透明的 no为透明
    webView.delegate = self;
}

- (void)webViewDidStartLoad:(UIWebView *)webView{
    
    NSLog(@"开始加载");
    
}

- (void)webViewDidFinishLoad:(UIWebView *)webView{
    
    NSLog(@"加载完成");
    NSString* title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
    NSLog(@"title=====%@",title);
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{
    NSLog(@"加载失败");
}


@end