如何更改iOS 7中未选中的标签栏项目的颜色？

我试图改变在选项卡栏中的未选定的图像的颜色，默认情况下，他们改变为灰色，即使图像是另一种颜色。

我已经search这个，但答案只适用于iOS 6或以下。

Answer 1

这使我最近疯狂，所以我写了我自己的类来处理它，与我尝试过的每一个iOS版本一起工作;）它很容易扩展到做你想做的任何事情！

GozTabBar.h：

#import <UIKit/UIKit.h> #import "GozTabBarItem.h" @protocol GozTabBarDelegate; @interface GozTabBar : UIView { UITapGestureRecognizer* pTapGestureRecognizer; } @property UIColor* backgroundColour; @property (unsafe_unretained, nonatomic) id < GozTabBarDelegate > delegate; @end @protocol GozTabBarDelegate < NSObject > - (int) getNumberOfTabBarItemsForTabBar: (GozTabBar*) pTabBar; - (GozTabBarItem*) getTabBarItemsAtIndex: (int) index ForTabBar: (GozTabBar*) pTabBar; - (void) selectedItemAtIndex: (int) index ForTabBar: (GozTabBar*) pTabBar; - (int) getSelectedItemIndexForTabBar: (GozTabBar*) pTabBar; @end 

GozTabBar.m

 #import "GozTabBar.h" #import "GozTabBarItem.h" @implementation GozTabBar @synthesize backgroundColour; @synthesize delegate; const int leftEdgeInset = 8; const int rightEdgeInset = 8; const int topEdgeInset = 8; const int bottomEdgeInset = 8; - (id)init { self = [super init]; if (self) { pTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget: self action: @selector( onTap: )]; [self addGestureRecognizer: pTapGestureRecognizer]; } return self; } - (id) initWithCoder:(NSCoder *)aDecoder { self = [super initWithCoder:aDecoder]; if (self) { pTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget: self action: @selector( onTap: )]; [self addGestureRecognizer: pTapGestureRecognizer]; } return self; } - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { pTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget: self action: @selector( onTap: )]; [self addGestureRecognizer: pTapGestureRecognizer]; } return self; } // Recognise a tap on the item (If it is on an item). - (void)onTap: (UIGestureRecognizer *)gestureRecognizer { const int leftRightEdgeInset = leftEdgeInset + rightEdgeInset; const int topBottomEdgeInset = topEdgeInset + bottomEdgeInset; int numItems = 0; if ( [self.delegate respondsToSelector: @selector( getNumberOfTabBarItemsForTabBar: )] ) { numItems = [self.delegate getNumberOfTabBarItemsForTabBar: self]; } if ( numItems > 0 ) { int widthLessInset = (self.frame.size.width - leftRightEdgeInset); int itemWidth = widthLessInset / numItems; int heightLessInset = self.frame.size.height - topBottomEdgeInset; int itemHeight = heightLessInset; CGPoint tapPoint = [gestureRecognizer locationInView: self]; // Draw the custom items. for( int i = 0; i < numItems; i++ ) { CGRect tabBarItemRect = CGRectMake( leftEdgeInset + (itemWidth * i), 0, itemWidth, itemHeight ); if ( CGRectContainsPoint( tabBarItemRect, tapPoint ) ) { if ( [self.delegate respondsToSelector: @selector(selectedItemAtIndex:ForTabBar:)] ) { [self.delegate selectedItemAtIndex: i ForTabBar: self]; } break; } } } } - (void)drawRect:(CGRect)rect { const int leftRightEdgeInset = leftEdgeInset + rightEdgeInset; const int topBottomEdgeInset = topEdgeInset + bottomEdgeInset; CGContextRef ctx = UIGraphicsGetCurrentContext(); // Fill the background in the relevant colour. CGContextSetFillColorWithColor( ctx, backgroundColour.CGColor ); CGContextFillRect( ctx, rect ); int numItems = 0; if ( [self.delegate respondsToSelector: @selector( getNumberOfTabBarItemsForTabBar: )] ) { numItems = [self.delegate getNumberOfTabBarItemsForTabBar: self]; } if ( numItems > 0 ) { int widthLessInset = (rect.size.width - leftRightEdgeInset); int itemWidth = widthLessInset / numItems; int heightLessInset = rect.size.height - topBottomEdgeInset; int itemHeight = heightLessInset; int selectedIndex = 0; if ( [self.delegate respondsToSelector: @selector(getSelectedItemIndexForTabBar:)] ) { selectedIndex = [self.delegate getSelectedItemIndexForTabBar: self]; } // Draw the custom items. for( int i = 0; i < numItems; i++ ) { //GozTabBarItem* pItem = [self.items objectAtIndex: i]; GozTabBarItem* pItem = nil; if ( [self.delegate respondsToSelector: @selector(getTabBarItemsAtIndex:ForTabBar:)] ) { pItem = [self.delegate getTabBarItemsAtIndex: i ForTabBar: self]; } if ( pItem != nil ) { CGRect tabBarItemRect = CGRectMake( leftEdgeInset + (itemWidth * i), topEdgeInset, itemWidth, itemHeight ); CGPoint tabBarItemCenter = CGPointMake( tabBarItemRect.origin.x + (tabBarItemRect.size.width / 2), tabBarItemRect.origin.y + (tabBarItemRect.size.height / 2) ); UIImage* pDrawImage = nil; if ( i == selectedIndex ) { pDrawImage = pItem.selectedImage; } else { pDrawImage = pItem.unSelectedImage; } CGRect drawRect = CGRectMake( tabBarItemCenter.x - (pDrawImage.size.width / 2), tabBarItemCenter.y - (pDrawImage.size.height / 2), pDrawImage.size.width, pDrawImage.size.height ); [pDrawImage drawInRect: drawRect]; } } } } 

GozTabBarItem.h

 #import <UIKit/UIKit.h> @interface GozTabBarItem : NSObject { } @property UIImage* selectedImage; @property UIImage* unSelectedImage; - (id) initWithSelectedImage: (UIImage*) selectedImage andUnselectedImage: (UIImage*) unSelectedImage; @end 

GozTabBarItem.m

 #import "GozTabBarItem.h" @implementation GozTabBarItem @synthesize selectedImage; @synthesize unSelectedImage; - (id) initWithSelectedImage: (UIImage*) selectedImg andUnselectedImage: (UIImage*) unSelectedImg { self = [super init]; if (self) { self.selectedImage = selectedImg; self.unSelectedImage = unSelectedImg; } return self; } @end 

希望有所帮助。