如何在Xcode中更改选项卡栏颜色

Question

如何更改此代码中的标签栏颜色？ 我的标签栏是黑色的。 单击时将其更改为蓝色。 我想将拖车颜色更改为任何其他颜色。

这段代码来自：application.m，还有：rotatingTabBarController.m，rotatingTabBarController.h

//  1B) If this app uses tabs, create a tabbed navigation application and set the default screen for each tab
//      to the defaultScreenGuid in the tabs data
if([self.tabs count] > 0){
    [BT_debugger showIt:self:[NSString stringWithFormat:@"building a tabbed based navigation app%@", @""]];

    if([self.screens count] > 0){

        //appDelegate
        qoqb_appDelegate *appDelegate = (qoqb_appDelegate *)[[UIApplication sharedApplication] delegate];   

        //initialize the tab bar controller
        rootTabBarController = [[BT_rotatingTabBarController alloc] init];
        [rootTabBarController.view setFrame:[[UIScreen mainScreen] bounds]];
        [rootTabBarController setDelegate:appDelegate];
        rootTabBarController.view.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);

        //if we have a tabbar color setup in the theme
        if(self.rootTheme != nil){
            if([self.rootTheme.jsonVars objectForKey:@"tabBarColor"]){
                if([[self.rootTheme.jsonVars objectForKey:@"tabBarColor"] length] > 3){
                    UIColor *tabberColor = [BT_color getColorFromHexString:[self.rootTheme.jsonVars objectForKey:@"tabBarColor"]];
                    NSString *tabberOpacity = @".50";
                    if([self.rootTheme.jsonVars objectForKey:@"tabBarColorOpacity"]){
                        if([[self.rootTheme.jsonVars objectForKey:@"tabBarColorOpacity"] length] > 0){
                            tabberOpacity = [NSString stringWithFormat:@".%@", [self.rootTheme.jsonVars objectForKey:@"tabBarColorOpacity"]];
                            if([tabberOpacity isEqualToString:@".100"]) tabberOpacity = @".50";
                        }
                        //colorize the tab-bar
                        [rootTabBarController addTabColor:tabberColor:[tabberOpacity doubleValue]];
                    }
                }
            }
        }

        //Fill a temporary array of view controllers to assign to tab bar controller
        NSMutableArray *tmpViewControllers = [[NSMutableArray alloc] init]; 

        //loop through each tab bar item in application data
        for(int i = 0; i < [[self tabs] count]; i++){

            //this tab
            BT_item *thisTab = (BT_item *)[[self tabs] objectAtIndex:i];
            NSString *textLabel = [[thisTab jsonVars] objectForKey:@"textLabel"];               
            UIImage *tabIcon = [UIImage imageNamed:[[thisTab jsonVars] objectForKey:@"iconName"]];              

            //get the screen from the apps array of screens for this tab's view controller
            if([[thisTab jsonVars] objectForKey:@"homeScreenItemId"]){

                BT_item *thisTabsDefaultScreenData = [self getScreenDataByItemId:[[thisTab jsonVars] objectForKey:@"homeScreenItemId"]];

                //if this is the first tab in the list, remember it as the "currently loaded screen", also make it the "previously loaded screen"
                if(i == 0){
                    [self setCurrentScreenData:thisTabsDefaultScreenData];
                    [self setPreviousScreenData:thisTabsDefaultScreenData];
                    [thisTabsDefaultScreenData setIsHomeScreen:TRUE];

                    //if theScreen has an audio file..load it in the delegate
                    if([[BT_strings getJsonPropertyValue:thisTabsDefaultScreenData.jsonVars:@"audioFileName":@""] length] > 3){

                        //appDelegate
                        qoqb_appDelegate *appDelegate = (qoqb_appDelegate *)[[UIApplication sharedApplication] delegate];   

                        //initialize audio in different thread to prevent UI blocking
                        [NSThread detachNewThreadSelector: @selector(loadAudioForScreen:) toTarget:appDelegate withObject:thisTabsDefaultScreenData];

                    }                       

                }   

Answer 1

tabBar.tintColor = [UIColor greenColor];

如果您的IOS版本不是IOS 5，将会崩溃，请参阅文档

一种更安全的方法是：

if ([tabBarController.tabBar respondsToSelector:@selector(setTintColor:)]) {
    [tabBarController.tabBar setTintColor:color];
}

//新代码

if ([rootTabBarController.tabBar respondsToSelector:@selector(setTintColor:)]) {
    [rootTabBarController.tabBar setTintColor:tabberColor];
}

Answer 2

在AppDelegate.m中的以下位置： application didFinishLaunchingWithOptions:

使用此编码：

// use this for highlighted color
[[UITabBar appearance] setSelectedImageTintColor:[UIColor colorWithRed:(256/256.0) green:(0/256.0) blue:(0/256.0) alpha:(1.0)]];

// Use this to channge the tint colo of the entere TabBar
[[UITabBar appearance] setTintColor:[UIColor colorWithRed:(255/256.0) green:(0/256.0) blue:(0/256.0) alpha:(1.0)]];

// This change only a background color
[[UITabBar appearance] setBackgroundColor:[UIColor colorWithRed:(255/256.0) green:(255/256.0) blue:(255/256.0) alpha:1.0]];

// This for change IMG or color tint on back of highlighted button.
[[UITabBar appearance] setSelectionIndicatorImage:[UIImage imageNamed:@"YourIMG.png"]];

仅此而已;）

Answer 3

tabBar.tintColor = [UIColor greenColor];

Answer 4

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.tabBarController.tabBar.tintColor=[UIColor redColor];
return YES;

}

在AppDelegate.m中

Answer 5

在IOS7中，此操作不同：

[[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];

您可以按照以下步骤操作：

我创建了一个新的UINavigationController ，例如UIDemoNavController结果是：

- (void)viewDidLoad{
    [[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];  
    [super viewDidLoad];
}

这是完整的演示类：

#import "UIDemoNavController.h"

@interface UIDemoNavController()

@end

@implementation UIDemoNavController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {}
    return self;
}

- (void)viewDidLoad{
    [[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning{
    [super didReceiveMemoryWarning];
}

@end