ios开发，用户登录界面，输入用户名之后点击Next后切换到密码输入框，密码输入框输入后点击Return，键盘回收

1.文本框定义，设置属性

//设置为属性或成员变量

UITextField *_userName;
UITextField *_passWd;

_userName=[[UITextFieldalloc]initWithFrame:CGRectMake(20,20,100,30)];
[_userNamesetBackgroundColor:[UIColorgrayColor]];
[_userName setReturnKeyType:UIReturnKeyNext];
[_userNamesetDelegate:self];
[self.viewaddSubview:_userName];

_passWd=[[UITextFieldalloc]initWithFrame:CGRectMake(20,60,100,30)];
[_passWdsetBackgroundColor:[UIColorgrayColor]];
[_passWdsetDelegate:self];
[self.viewaddSubview:_passWd];

2.本类实现协议

.h中添加

@interface ViewController :UIViewController<UITextFieldDelegate>

.m中实现

-(BOOL)textFieldShouldReturn:(UITextField *)textField

{

if (textField==_userName) {

[_passWdbecomeFirstResponder];

}

else{

[_passWdresignFirstResponder];

}

return YES;

}