iOS 修改TabBar的item间距

@interface HPTabBarController ()<UITabBarControllerDelegate>//继承自UITabBarController@property (nonatomic, strong) HPMapViewController *mapViewController;
@property (nonatomic, strong) HPPGCListViewController *PGCListViewController;
@property (nonatomic, strong) HPLonelyShopViewController *lonelyShopVC;
@property (nonatomic, strong) HPPickerViewController *pickerViewController;
@property (nonatomic, strong) HPMessageListViewController *messageViewController;
@property (nonatomic, strong) HPProfileViewController *profileViewController;
@end@implementation HPTabBarController-(void)viewWillLayoutSubviews { // 修改Tabbar的高度
CGRect tabFrame =self.tabBar.frame;
CGFloat TABBAR_HEIGHT = + ;
tabFrame.size.height= TABBAR_HEIGHT;
tabFrame.origin.y= self.view.frame.size.height- TABBAR_HEIGHT;
self.tabBar.frame= tabFrame;
}- (void)viewDidLoad
{
[super viewDidLoad]; self.viewControllers = [self tabBarControllers];
UIView *topLine = [[UIView alloc]initWithFrame:CGRectMake(, , SCREEN_WIDTH, 0.5)];
topLine.backgroundColor = [UIColor clearColor];
[self.tabBar addSubview:topLine]; UIImage *bgClearImg = [UIImage imageWithColor:[UIColor colorWithRed:/255.0 green:/255.0 blue:/255.0 alpha:0.94/1.0]];
self.tabBar.backgroundImage = [UIImage imageNamed:@"shadows_@3x"];//bgClearImg; [self.tabBar.items enumerateObjectsUsingBlock:^(UITabBarItem * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
if (idx == ) { //修改tabbar的间距
[obj setImageInsets:UIEdgeInsetsMake(-, , -, -)];
}else if (idx == ) {
[obj setImageInsets:UIEdgeInsetsMake(, -, , )];
}
obj.tag = idx;
}];
self.selectedIndex = ;
}