獲取鍵盤升起後的高度

//監聽鍵盤事件

    NSNotificationCenter *center=[NSNotificationCenter defaultCenter];

    [center addObserver:self selector:@selector(keyboard:) name:UIKeyboardWillChangeFrameNotification object:nil];

 

#pragma mark 代理方法

- (void)keyboard : (NSNotification *) noteInfo{

    //獲取鍵盤的高度

    CGRect rect=[noteInfo.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];

   

    if (JWScreemSize.height <= 568) {

       //設置頁面升高的高度

        self.view.transform=CGAffineTransformMakeTranslation(0, rect.origin.y-JWScreemSize.height);

    }

}