タブバーで選択されていない画像の色を変更しようとしています。画像が別の色であっても、デフォルトでは灰色に変更されます。
すでにこれを検索していますが、回答はiOS 6以下のみです。
タブバーで選択されていない画像の色を変更しようとしています。画像が別の色であっても、デフォルトでは灰色に変更されます。
すでにこれを検索していますが、回答はiOS 6以下のみです。
これは最近私を怒らせたので、私が試したすべてのバージョンの iOS で動作する独自のクラスを作成して処理しました ;) やりたいことを何でもできるように拡張するのは本当に簡単です!
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
それが役立つことを願っています。