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

　　

textFieldDemo = [[UITextField alloc] initWithFrame:CGRectMake(0, 150, 130, 30)]; textFieldDemo.backgroundColor = [UIColor brownColor];

　　textFieldDemo.secureTextEntry = YES; textFieldDemo.keyboardType = UIKeyboardTypeURL;

　　//textFieldDemo.returnKeyType = YES; [textFieldDemo setPlaceholder:@"UserName"];

　　//UIReturnKeySearch textFieldDemo.delegate = self; [self.view addSubview:textFieldDemo];

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　　相关方法

　

　- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ [textFieldDemo resignFirstResponder];

　　}- (void)textFieldDidEndEditing:(UITextField *)textField{ textFieldDemo = textField; [textField resignFirstResponder];

　　}//-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation//{

　　// return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

　　//}- (BOOL)textFieldShouldEndEditing:(UITextField *)textField{ return YES;}- (BOOL)textFieldShouldReturn:(UITextField *)textField{ return YES;}

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