如何取消的UIBarButtonItem的setTitle閃亮效果

Question

像形象示人，我用的UIBarButtonItem作爲rightBarButtonItem，我想要做的就是改變rightBarButton的標題時，我選擇照片或取消選擇的圖片，所以我用這樣的代碼這樣的：

[self.rightBarButton setTitle:[NSString stringWithFormat:@"完成（%@/%@）",@(_selectedAssets.count),@(self.maxPicturesNum)]]; 

，但是當它的文本改變了barbutton將顯示護腿，我嘗試使用的UIButton代替的UIBarButtonItem和趨膚效應確實消失了，但的UIButton將接近正確的邊界遠，你能幫幫我嗎？

Answer 1

您可以創建UIButton並將其分配給您的rightBarButton

UIButton *rightButton = [[UIButton alloc] initWithFrame:someFrame]; 
[rightButton setBackgroundImage:someImage forState:UIControlStateNormal]; 
[rightButton addTarget:self action:@selector(back:) forControlEvents:UIControlEventTouchUpInside]; 
rightButton.titleLabel.text = [NSString stringWithFormat:@"完成（%@/%@）",@(_selectedAssets.count),@(self.maxPicturesNum)]; 
rightButton.titleLabel.font = someFont; 
UIBarButtonItem *rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:rightButton]; 
self.rightBarButton = rightBarButtonItem; 

雖然更新標籤的使用rightButton.titleLabel.text

用於調整標籤使用：

- (void)setTitlePositionAdjustment:(UIOffset)adjustment 
       forBarMetrics:(UIBarMetrics)barMetrics 

Answer 2

最後，我這樣做：

- (void)loadRightButtonItem{ 
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; 
button.frame = CGRectMake(30, 0, 120, 40); 
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight; 
[button setTitle:@"完成（0/9）" forState:UIControlStateNormal]; 
button.tintColor = [UIColor whiteColor]; 
[button setTitleShadowColor:[UIColor whiteColor] forState:UIControlStateHighlighted]; 
// [button setTitleColor:[self.buttonFolder titleColorForState:UIControlStateHighlighted] forState:UIControlStateHighlighted]; 
[button addTarget:self action:@selector(onFinishClicked:) forControlEvents:UIControlEventTouchUpInside]; 

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 135, 40)]; 
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithCustomView:view]; 

[view addSubview:button]; 
self.navigationItem.rightBarButtonItem = item; 
_rightBarButton = button; 
} 

它取消了小腿的效果。

感謝@ RoHaN，您的想法確實給了我很大啓發。