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#import "ViewController.h" @interface ViewController () <UIWebViewDelegate> @property(nonatomic,weak)UIWebView* web; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; [self _setTextField]; [self _loadWebView]; } #pragma mark - 设置输入框 - (void)_setTextField{ self.tf.clearButtonMode=UITextFieldViewModeWhileEditing; } #pragma mark - 加载WebView - (void)_loadWebView{ UIWebView* web=[[UIWebView alloc] init]; web.frame=CGRectMake(0,self.view.frame.size.height,self.view.frame.size.width,self.view.frame.size.height-42 ); self.web=web; web.delegate=self; [self.view addSubview:web]; } #pragma mark - 放弃第一响应 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ [self.tf resignFirstResponder]; } #pragma mark - Action - (IBAction)backAction:(id)sender { [self.web goBack]; // self.web.frame=CGRectMake(0,self.view.frame.size.height,self.view.frame.size.width,self.view.frame.size.height-42 ); } - (IBAction)forwardAction:(id)sender { [self.web goForward]; self.web.frame=CGRectMake(0,20,self.view.frame.size.width,self.view.frame.size.height-50); } - (IBAction)undoAction:(id)sender { [self.web stopLoading]; } - (IBAction)refreshAction:(id)sender { [self.web reload]; } - (IBAction)searchAction:(id)sender { [self.tf resignFirstResponder]; self.web.frame=CGRectMake(0,20,self.view.frame.size.width,self.view.frame.size.height-60); [self _sendRequest]; } #pragma mark - UIWebViewDelegate - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{ return YES; } - (void)webViewDidStartLoad:(UIWebView *)webView{ } - (void)webViewDidFinishLoad:(UIWebView *)webView{ // NSLog(@"%d===%d",[webView canGoBack],[webView canGoForward]); self.backBt.enabled=[webView canGoBack]; self.forwardBt.enabled=[webView canGoForward]; self.refresh.enabled=([webView canGoBack] ||[webView canGoForward]); } - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{ NSLog(@"%@",error); } - (void)_sendRequest{ //http://www.baidu.com NSURL* url=[NSURL URLWithString:self.tf.text]; NSURLRequest* request=[NSURLRequest requestWithURL:url]; [self.web loadRequest:request]; } @end