UITextfiled 光标 return键

UITextFieldDelegate

键盘return事件

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    if (textField.tag == 1){
        // do next
        // 光标
        [self.passwordField becomeFirstResponder];
    }else if (textField.tag == 2){
        // do join
        [self login:nil];
    }
    return YES;
}