键盘 监听

键盘 监听

- (void)addKeyBoardNoti {

    

    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardChange:) name:UIKeyboardWillShowNotification object:nil];

    

    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardChange:) name:UIKeyboardWillHideNotification object:nil];

}

- (void)removeKeyBoardNoti {

    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];

    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];

}

-(void)keyboardChange:(NSNotification *)notification

{

    NSDictionary *userInfo = [notification userInfo];

    NSTimeInterval animationDuration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];

    CGRect keyboardEndFrame =  [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];

   [UIView animateWithDuration:animationDuration animations:^{

       // 显示

       if (notification.name == UIKeyboardWillShowNotification) {

           

           

       }else{// 隐藏

           

           

       }

   }];

    

    

}

// 通过 设置 textField 或者 textView 来设置 键盘通知 和取消通知

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView {

    [self addKeyBoardNoti];

    return YES;

}

- (void)textViewDidEndEditing:(UITextView *)textView{

    

   [self removeKeyBoardNoti];

}