{name = UIKeyboardWillChangeFrameNotification; userInfo = {UIKeyboardAnimationCurveUserInfoKey = 7;UIKeyboardAnimationDurationUserInfoKey = 0;UIKeyboardBoundsUserInfoKey = "NSRect: {{0, 0}, {320, 252}}";UIKeyboardCenterBeginUserInfoKey = "NSPoint: {160, 441.5}";UIKeyboardCenterEndUserInfoKey = "NSPoint: {160, 442}";UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 315}, {320, 253}}";UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 316}, {320, 252}}";UIKeyboardIsLocalUserInfoKey = 1;
}}

    NSDictionary *userInfo = notification.userInfo;// 动画的持续时间double duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];// 键盘的frameCGRect keyboardF = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];

#pragma mark - 懒加载
- (YSEmoticonKeyboard *)emoticonKeyboard
{if (!_emoticonKeyboard) {self.emoticonKeyboard = [[YSEmoticonKeyboard alloc] init];// 键盘的宽度self.emoticonKeyboard.width = self.view.width;self.emoticonKeyboard.height = 216;}return _emoticonKeyboard;
}

/***  切换键盘*/
- (void)switchKeyboard
{// self.textView.inputView == nil : 使用的是系统自带的键盘if (self.textView.inputView == nil) { // 切换为自定义的表情键盘self.textView.inputView = self.emoticonKeyboard;// 显示键盘按钮self.toolbar.showKeyboardButton = YES;} else { // 切换为系统自带的键盘self.textView.inputView = nil;// 显示表情按钮self.toolbar.showKeyboardButton = NO;}// 开始切换键盘self.switchingKeybaord = YES;// 退出键盘
    [self.textView endEditing:YES];// 结束切换键盘self.switchingKeybaord = NO;dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{// 弹出键盘
        [self.textView becomeFirstResponder];});
}