利用textField的代理和手势来进行取消第一响应的事件来提高用户体验！

　在viewDidLoad中创建UITextField
　　

1. textFieldDemo = [[UITextField alloc] initWithFrame:CGRectMake(0, 150, 130, 30)]; textFieldDemo.backgroundColor = [UIColor brownColor];
   
2. 　　textFieldDemo.secureTextEntry = YES; textFieldDemo.keyboardType = UIKeyboardTypeURL;
   
3. 　　//textFieldDemo.returnKeyType = YES; [textFieldDemo setPlaceholder:@"UserName"];
   
4. 　　//UIReturnKeySearch textFieldDemo.delegate = self; [self.view addSubview:textFieldDemo];

复制代码

　　相关方法
　

1. 　- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ [textFieldDemo resignFirstResponder];
   
2. 　　}- (void)textFieldDidEndEditing:(UITextField *)textField{ textFieldDemo = textField; [textField resignFirstResponder];
   
3. 　　}//-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation//{
   
4. 　　// return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
   
5. 　　//}- (BOOL)textFieldShouldEndEditing:(UITextField *)textField{ return YES;}- (BOOL)textFieldShouldReturn:(UITextField *)textField{ return YES;}

复制代码