//通知中心addObserver  
 [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(transformView:) name:UIKeyboardWillChangeFrameNotification object:nil];
 

//鍵盤迴收
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    for (UIView *view in self.view.subviews) {
        [view resignFirstResponder];
    }
}
 

//上移UIView
-(void)transformView:(NSNotification *)aNSNotification{
    
    //獲取鍵盤彈出前的Rect
    NSValue *keyBoardBeginBounds=[[aNSNotification userInfo]objectForKey:UIKeyboardFrameBeginUserInfoKey];
    CGRect beginRect=[keyBoardBeginBounds CGRectValue];
    
    //獲取鍵盤彈出後的Rect
    NSValue *keyBoardEndBounds=[[aNSNotification userInfo]objectForKey:UIKeyboardFrameEndUserInfoKey];
    CGRect endRect=[keyBoardEndBounds CGRectValue];
    
    //獲取鍵盤位置變化前後縱座標Y的變化值
    CGFloat deltaY=endRect.origin.y-beginRect.origin.y;
    
    //在0.25秒內完成self.view的Fram變化，等於是給self.view新增一個向上移動 deltaY 的動畫
    [UIView animateWithDuration:0.25f animations:^{
        [self.view setFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y+deltaY, self.view.frame.size.width , self.view.frame.size.height)];
    }];
}