WKWebView

WKWebView

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

@interface ViewController () <WKNavigationDelegate>

@property(nonatomic, strong) WKWebView* webView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    CGRect screen = [[UIScreen mainScreen] bounds];
    
    ///按钮栏
    //按钮栏宽
    CGFloat buttonBarWidth = 316;
    UIView* buttonBar = [[UIView alloc] initWithFrame: CGRectMake((screen.size.width - buttonBarWidth) / 2, 20, buttonBarWidth, 30)];
    
    [self.view addSubview:buttonBar];
    
    /// 1.添加LoadHTMLString按钮
    UIButton* buttonLoadHTMLString = [UIButton buttonWithType:UIButtonTypeSystem];
    [buttonLoadHTMLString setTitle:@"LoadHTMLString" forState:UIControlStateNormal];
    buttonLoadHTMLString.frame = CGRectMake(0, 0, 117, 30);
    //指定事件处理方法
    [buttonLoadHTMLString addTarget:self action:@selector(testLoadHTMLString:) forControlEvents: UIControlEventTouchUpInside];
    [buttonBar addSubview: buttonLoadHTMLString];
    
    /// 2.添加LoadData按钮
    UIButton* buttonLoadData = [UIButton buttonWithType:UIButtonTypeSystem];
    [buttonLoadData setTitle:@"LoadData" forState:UIControlStateNormal];
    buttonLoadData.frame = CGRectMake(137, 0, 67, 30);
    //指定事件处理方法
    [buttonLoadData addTarget:self action:@selector(testLoadData:) forControlEvents: UIControlEventTouchUpInside];
    [buttonBar addSubview: buttonLoadData];
    
    /// 3.添加LoadRequest按钮
    UIButton* buttonLoadRequest = [UIButton buttonWithType:UIButtonTypeSystem];
    
    [buttonLoadRequest setTitle:@"LoadRequest" forState:UIControlStateNormal];
    buttonLoadRequest.frame = CGRectMake(224, 0, 92, 30);
    //指定事件处理方法
    [buttonLoadRequest addTarget:self action:@selector(testLoadRequest:) forControlEvents: UIControlEventTouchUpInside];
    [buttonBar addSubview: buttonLoadRequest];
    
    /// 4.添加WKWebView
    self.webView = [[WKWebView alloc] initWithFrame: CGRectMake(0, 60, screen.size.width, screen.size.height - 80)];
    
    [self.view addSubview: self.webView];
    
}

- (void)testLoadHTMLString:(id)sender {
    
    NSString *htmlPath = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"];
    NSURL *bundleUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]];
    NSError *error = nil;
    
    NSString *html = [[NSString alloc] initWithContentsOfFile:htmlPath encoding: NSUTF8StringEncoding error:&error];
    
    if (error == nil) {//数据加载没有错误情况下
        [self.webView loadHTMLString:html baseURL:bundleUrl];
    }
}

- (void)testLoadData:(id)sender {
    
    NSString *htmlPath = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"];
    NSURL *bundleUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]];
    NSData *htmlData = [[NSData alloc]  initWithContentsOfFile: htmlPath];
    
    [self.webView loadData:htmlData MIMEType:@"text/html" characterEncodingName:@"UTF-8" baseURL:bundleUrl];
    
}

- (void)testLoadRequest:(id)sender {
    
    //http://协议名不可省略
    NSURL * url = [NSURL URLWithString: @"http://www.baidu.com"];
    NSURLRequest * request = [NSURLRequest requestWithURL:url];
    [self.webView loadRequest:request];
    self.webView.navigationDelegate = self;
    
}

#pragma mark  --实现WKNavigationDelegate委托协议
//开始加载时调用
-(void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
    NSLog(@"开始加载");
}
//当内容开始返回时调用
-(void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
    NSLog(@"内容开始返回");
}

//加载完成之后调用
-(void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
    NSLog(@"加载完成");
}

//加载失败时调用
-(void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error {
    NSLog(@"加载失败 error :  %@", error.description);
}

@end

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