WKWebView使用

#import "ViewController.h"
#import <WebKit/WebKit.h>

@interface ViewController ()<WKNavigationDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    //1.创建NSURL
    NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
    //2.创建NSURLRequest
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    //3.创建WKWebView对象，添加到界面(storyboard没有控件)
    WKWebView *webView = [[WKWebView alloc] initWithFrame:self.view.frame];
    [self.view addSubview:webView];
    //3.1 设置代理
    webView.navigationDelegate = self;
    //4.加载请求
    [webView loadRequest:request];
}

//开始加载
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
}
//加载成功
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
}
//加载失败
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error {
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
    NSLog(@"百度主页加载失败:%@", error.userInfo);
    
}

@end