iOS-UIWebView的一些用法（js调oc方法）

• UIWebView加载远程url

    NSURL *url = [NSURL URLWithString:@"[http://www.baidu.com]"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [self.webView loadRequest:request];

• UIWebView加载本地html

方法1

    //加载本地html
    NSString *basePath = [[NSBundle mainBundle] bundlePath];
    NSString *htmlPath = [basePath stringByAppendingPathComponent:@"test.html"];
    NSURL *url = [NSURL fileURLWithPath:htmlPath];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [self.webView loadRequest:request];

方法2

    NSString *path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"html"];
    NSURL *url = [NSURL URLWithString:path];
    self.webView.scalesPageToFit = YES;
    NSString *htmlString = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
    [self.webView loadHTMLString:htmlString baseURL:url];

• JS调用OC方法

网上有开源框架，可以实现native 和 js直接互相调用 WebViewJavascriptBridge,如果只是需要简单的调用的话，完全可以利用UIWebView的代理方法代替- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType，代码如下:

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    NSString *url = [[request URL] absoluteString];
//    NSURL *url = [request URL];
    
    NSLog(@"%@",url);
    //代码中根据返回的URL或者scheme来判断处理不同逻辑
    if ([url isEqualToString:@"demo://"])
    {
        DetailViewController *detail = [[DetailViewController alloc] init];
        [self.navigationController pushViewController:detail animated:YES];
    }
    return YES;
}

html代码如下：

    









    







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                                           2015.6.30