WKWebView加载本地资源loadData:MIMEType:characterEncodingName:baseURL:

最新推荐文章于 2025-05-24 16:56:37 发布

原创最新推荐文章于 2025-05-24 16:56:37 发布 · 5.5k 阅读

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本文档展示了如何在iOS应用中使用WKWebView组件加载本地HTML文件。通过创建WKWebView实例，设置MIMEType和字符编码，然后调用`loadData: MIMEType: characterEncodingName: baseURL:`方法来加载本地HTML资源。同时，还实现了WKNavigationDelegate协议以监听加载过程中的各种状态，包括开始加载、内容返回、加载完成和加载失败的情况。

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#import "ViewController.h"

#import <WebKit/WebKit.h>

@interface ViewController ()<WKNavigationDelegate>

@property(nonatomic,strong) WKWebView* webView;

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

//sreen是主屏幕的范围

CGRect screen = [[UIScreen mainScreen] bounds];

//按钮栏

CGFloat buttonBarWidth = 300;

UIView* buttonBar = [[UIView alloc]initWithFrame:CGRectMake((screen.size.width - buttonBarWidth)/2,50, buttonBarWidth, 30)];

buttonBar.backgroundColor = [UIColor grayColor];

[self.view addSubview:buttonBar];

//按钮栏按钮

UIButton* buttonLoadRequest = [UIButton buttonWithType:UIButtonTypeSystem];

[buttonLoadRequest setTitle:@"wedding" forState:UIControlStateNormal];

buttonLoadRequest.frame = CGRectMake((buttonBarWidth-80)/2, 0, 80, 30);

[buttonLoadRequest addTarget:self action:@selector(testLoadRequest:) forControlEvents:UIControlEventTouchUpInside];

[buttonBar addSubview:buttonLoadRequest];

//添加WKWebView

self.webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 95, screen.size.width, screen.size.height-80)];

[self.view addSubview:self.webView];

}

//实现按钮点击事件方法

-(void)testLoadRequest:(id)sender{

//url是固定不变的

NSURL * url = [NSURL fileURLWithPath:[[NSBundle mainBundle]bundlePath]];

NSString *htmlPath = [[NSBundle mainBundle] pathForResource:@"aboard" ofType:@"html"];

NSData *htmlData = [[NSData alloc] initWithContentsOfFile:htmlPath];

[self.webView loadData:htmlData MIMEType:@"text/html" characterEncodingName:@"UTF-8" baseURL:url];

}

#pragma mark -- 实现WKNavigationDelegate委托协议

//开始加载时调用

-(void)webView:(WKWebView *)webView didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation{

NSLog(@"开始加载");

}

//当内容开始返回时调用

-(void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation{

NSLog(@"内容开始返回");

}

//加载完成之后调用

-(void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation{

NSLog(@"加载完成");

}

//加载失败时调用

-(void)webView:(WKWebView *)webView didFailLoadWithError:(nonnull NSError *)error{

NSLog(@"加载失败 error : %@",error.description);

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end