欄按鈕的物品圖像轉向白色圖標，即使它的黑色

Question

我一個工具欄使用這些圖標作爲欄按鈕項
http://stopiransnukes.org/images/home_icon.png
和
http://www.bladmuziekplus.nl/shop/files/images/icon_home.png
但背景圖像轉換爲白色，甚至自動如果黑色。

我嘗試通過代碼設置圖像背景，但仍然變成了白色。

手動：我拖動了+將上面的圖片拖放到了項目中。我已經選擇了條形按鈕項目並且在右側欄的第4個選項（盾形圖標）上選擇了不同的色調並且在條形按鈕下方設置了下拉圖像到上面的圖像。

編程：

[self.homeButton setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor blackColor], UITextAttributeTextColor,nil] forState:UIControlStateNormal]; 

    [[self.homeButton] setImage:[UIImage imageNamed:@"home_icon.png"]]; 

如何解決呢？
在此先感謝。

。

Answer 1

viewDidLoad中

[super viewDidLoad]; 

//uıbarButtonItem firstButtonItem,secondButtonItem 
UIImage* firstButtonImage = [UIImage imageNamed:@"firstImageName"];; 
CGRect frameimg = CGRectMake(0, 0, 30, 30); 
UIButton * someButton = [[UIButton alloc] initWithFrame:frameimg]; 
[someButton setBackgroundImage:firstButtonImage forState:UIControlStateNormal]; 
[someButton addTarget:self action:@selector(goToUserProfile) 
    forControlEvents:UIControlEventTouchUpInside]; 
self.firstButtonItem = [[UIBarButtonItem alloc] initWithCustomView:someButton]; 


UIImage* secondButtonImage = [UIImage imageNamed:@"secondImageName"]; 
frameimg = CGRectMake(0, 0, 30, 30); 
someButton = [[UIButton alloc] initWithFrame:frameimg]; 
[someButton setBackgroundImage:secondButtonImage forState:UIControlStateNormal]; 
[someButton addTarget:self action:@selector(likePhoto) 
    forControlEvents:UIControlEventTouchUpInside]; 
[someButton setTag:1]; 
self.secondButtonItem = [[UIBarButtonItem alloc] initWithCustomView:someButton]; 

[self.toolbar setItems:[self addItemsToToolbar]]; 

AddItemsToToolbar方法

- (NSMutableArray *)addItemsToToolbar{ 
NSMutableArray *items = [[NSMutableArray alloc] init]; 
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil]; 
[items addObject:flexSpace]; 
[items addObject:self.firstButtonItem]; 
[items addObject:flexSpace]; 
[items addObject:self.secondButtonItem]; 
return items; 

}

Answer 2

這是正常行爲，您可以在人機界面指南中閱讀它。

http://developer.apple.com/library/ios/documentation/userexperience/conceptual/mobilehig/IconsImages/IconsImages.html#//apple_ref/doc/uid/TP40006556-CH14-SW8

如果你想改變，你需要編寫自己的子類。

Answer 3

UIImage* infoButtonImage = [UIImage imageNamed:@"info_button.png"];; 
CGRect frameimg = CGRectMake(0, 0, infoButtonImage.size.width, infoButtonImage.size.height); 
UIButton * someButton = [[UIButton alloc] initWithFrame:frameimg]; 
[someButton setBackgroundImage:infoButtonImage forState:UIControlStateNormal]; 
[someButton addTarget:self action:@selector(actionOfButton) 
    forControlEvents:UIControlEventTouchUpInside]; 
UIBarButtonItem * infoButton = [[UIBarButtonItem alloc] initWithCustomView:someButton]; 

該代碼將解決您的問題

Answer 4

這是一個循序漸進的過程添加一個圖像到UIButton，並將UIButton作爲custom view添加到storyboard本身中的UIBarButtonItem內。我將添加一些圖像，以便您完全理解這一點。

步驟1：拖放toolbar在storyboard視圖

步驟2：在你的view

步驟3拖放UIButton：將圖像拖放到中

第4步：拖放工具欄上的UIButton，現在你可以在右側，這是UIBarButtonItem內加入。現在你只需要連接你的按鈕的操作方法。