关于iOS Tabbar的一些设置
其实iOS Tabbar的可定制性非常高，我们没有必要重复造轮子，下面是笔者收集的一些tabbar的常用设置，希望对大家有所帮助。
iOS7设置如下：
[self.tabBarController.tabBarsetSelectedImageTintColor:[UIColor greenColor]];
ios8中如下设置：
self.tabBar.tintColor=[UIColor greenColor];
消除tabbar边框
在appdelegate的程序启动处：
[[UITabBar appearance] setShadowImage:[[UIImage alloc]init]];
[[UITabBar appearance] setBackgroundImage:[[UIImage alloc]init]];
设置tabbar item原始图标与原始选中图标，而不是系统自动填充的颜色
// 拿到 TabBar 在拿到想应的item
UITabBar *tabBar = _tabBarController.tabBar;
UITabBarItem *item0 = [tabBar.items objectAtIndex:0];
UITabBarItem *item1 = [tabBar.items objectAtIndex:1];
UITabBarItem *item2 = [tabBar.items objectAtIndex:2];
UITabBarItem *item3 = [tabBar.items objectAtIndex:3];
// 对item设置相应地图片
item0.selectedImage = [[UIImage imageNamed:@"recognize-1"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];;
item0.image = [[UIImage imageNamed:@"recognize"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
item1.selectedImage = [[UIImage imageNamed:@"life-1"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];;
item1.image = [[UIImage imageNamed:@"life"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
item2.selectedImage = [[UIImage imageNamed:@"edit-1"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];;
item2.image = [[UIImage imageNamed:@"edit"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
item3.selectedImage = [[UIImage imageNamed:@"setting-1"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];;
item3.image = [[UIImage imageNamed:@"setting"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];设置tabbar背景图片
UIView *backView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, Main_Screen_Width, 49)];
backView.backgroundColor = [UIColor redColor];
[self.tabBar insertSubview:backView atIndex:0];
self.tabBar.opaque = YES;设置tabbar item选中时的背景图片
1、5.0以上版本
self.tabBar.selectionIndicatorImage = [UIImage imageNamed:@"system_tabbar_item_selected.png"];2、5.0以下版本 首先实现如下方法：
- (void)setNoHighlistTabBar:(UITabBarController *)tabBarController
{
NSArray * tabBarSubviews = [tabBarController.tabBar subviews];
int index4SelView;
if(tabBarController.selectedIndex+1 > 4)
{//selected the last tab.
index4SelView = [tabBarSubviews count]-1;
}
else if([tabBarController.viewControllers count] > 5)
{//have "more" tab. and havn't selected the last tab:"more" tab.
index4SelView = [tabBarSubviews count] - 5 + tabBarController.selectedIndex;
}
else
{//have no "more" tab.
index4SelView = [tabBarSubviews count] -
[tabBarController.viewControllers count] + tabBarController.selectedIndex;
}
if([tabBarSubviews count] < index4SelView+1)
{
assert(false);
return;
}
UIView * selView = [tabBarSubviews objectAtIndex:index4SelView];
NSArray * selViewSubviews = [selView subviews];
for(UIView * v in selViewSubviews)
{
if(v && [NSStringFromClass([v class]) isEqualToString:@"UITabBarSelectionIndicatorView"])
{//the v is the highlight view.
[self.selectedItemBgImageView removeFromSuperview];
[selView insertSubview:self.selectedItemBgImageView belowSubview:v];
[v removeFromSuperview];
break;
}
}
}改方法的实质就是循环tabBar的subViews， 找到tabBar中的这个view, 是一个UITabBarSelectionIndicatorView的view，然后把它替换成你自己创建的UIImageView, 上例中的self.selectedItemBgImageView. 然后需要把UITabBarController的delegate设为self, 在tabBarController:didSelectViewController的代理方法中执行上面的方法：[self setNoHighlistTabBar:self]; 还有setSelectIndex:方法中也要执行[self setNoHighlistTabBar:self];
腾讯云开发者
