TextFiled跟随键盘一起移动(类似于微信)

今天项目要求文章曾加评论功能,类似于微信朋友圈的评论,当点击评论时textfiled随着键盘一起出现,很流畅,研究了许久,终于完成了

注册通知

[XMNotificationCenter addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardWillShowNotification object:nil];
[XMNotificationCenter addObserver:self selector:@selector(keyboardDidHidden:) name:UIKeyboardWillHideNotification object:nil];

键盘出现

- (void)keyboardDidShow:(NSNotification *)notification
{
//获取键盘高度
keyboardH = [[notification.userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size.height;

// 获取键盘弹出动画时间
NSValue *animationDurationValue = [notification.userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];
//改变TextFiled的Y
[animationDurationValue getValue:&animationDuration];
[UIView animateWithDuration:animationDuration animations:^{
    _textview.y =  H_PATH - keyboardH - 50;
}];
DEBUGLog(@"出现%f",keyboardH);
}

键盘消失

- (void)keyboardDidHidden:(NSNotification *)notification
{
DEBUGLog(@"消失");
//将TextFiled的Y至初始位置并隐藏
[UIView animateWithDuration:animationDuration animations:^{
    _textview.y =  H_PATH - 50;
    _textview.hidden = YES;
}];
}

注销通知

- (void)dealloc
 {
[XMNotificationCenter removeObserver:self];
}