UIWebView

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xml2.html

<html>

<head>

<h1>我是大标题</h1>

<h2>我是二标题</h2>

<hr>

</head>

<body>

function func(){

//document.write("<p>灰常不错</p>");

alert("天气依然很好!");

}

function func2(){

window.location.href="oc://ocFunc"

}

</script>

<p>今天星期日，晴空万里，雷电交加。</p>

<ahref="http://www.baidu.com">百度</a>

</body>

</html>

#import "ViewController.h"

@interfaceViewController ()<UIWebViewDelegate>

{

UIWebView *_webView;

UITextField *_textField;

}

@end

@implementation ViewController

- (void)viewDidLoad

{

[superviewDidLoad];

//地址栏

_textField = [[UITextFieldalloc] initWithFrame:CGRectMake(0,20, 320, 20)];

_textField.borderStyle =UITextBorderStyleRoundedRect;

[self.viewaddSubview:_textField];

NSArray *array =@[@"转到",@"前进",@"后退",@"刷新",@"停止",@"html",@"调js"];

for (int i =0; i < array.count; i++) {

UIButton *button = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

button.frame =CGRectMake(i * (320 / array.count),40, 320/array.count,20);

[button setTitle:array[i]forState:UIControlStateNormal];

button.tag = i;

[button addTarget:selfaction:@selector(buttonClick:)forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:button];

}

_webView = [[UIWebViewalloc] initWithFrame:CGRectMake(0,60, 320, 420)];

_webView.delegate =self;

[self.viewaddSubview:_webView];

}

-(void)buttonClick:(UIButton *)btn

{

if (btn.tag ==0) {

//添加前缀

if (![_textField.texthasPrefix:@"http"]) {

_textField.text = [NSStringstringWithFormat:@"http://%@",_textField.text];

}

NSURLRequest *reqeust = [NSURLRequestrequestWithURL:[NSURLURLWithString:_textField.text]];

//webView加载请求

[_webViewloadRequest:reqeust];

[_textFieldresignFirstResponder];

}

//前进

if (btn.tag ==1) {

[_webViewgoForward];

}

//后退

if (btn.tag ==2) {

[_webViewgoBack];

}

//刷新

if (btn.tag ==3) {

[_webViewreload];

}

//停止

if (btn.tag ==4) {

[_webViewstopLoading];

}

//加载本地html

if (btn.tag ==5) {

NSString *path = [[NSBundlemainBundle] pathForResource:@"xml2"ofType:@"html"];

NSString *htmlStr = [NSStringstringWithContentsOfFile:path encoding:NSUTF8StringEncodingerror:nil];

//加载本地html

[_webViewloadHTMLString:htmlStr baseURL:nil];

}

js调用oc代码:

oc调用js代码: stringByEvaluatingJavaScriptFromString:

if (btn.tag ==6) {

[_webViewstringByEvaluatingJavaScriptFromString:@"func()"];

}

//js调用oc

}

-(void)ocFunc

{

NSLog(@"我是大oc");

}

-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType

{

//更新地址

_textField.text = request.URL.absoluteString;

//js调oc

js发起一个非法地址请求，oc截取到，解析地址，拿到要调用的方法名称，进行方法调用

http://www.baidu.com

oc://ocFunc

NSArray *array = [request.URL.absoluteStringcomponentsSeparatedByString:@"://"];

if ([array[0]isEqualToString:@"oc"]) {

SEL sel = NSSelectorFromString(array[1]);

[selfperformSelector:sel];

}

returnYES;

}

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