1、修改tabbar高度
- 重写- (void)viewWillLayoutSubviews方法
//改变tabbar高度
- (void)viewWillLayoutSubviews{
CGRect tabFrame = self.tabBar.frame;
tabFrame.size.height = 49;
tabFrame.origin.y = self.view.frame.size.height - 49;
self.tabBar.frame = tabFrame;
}
2、修改TabBarItem的文字大小和位置
- 使用[UITabBarItem appearance]方法,需要注意的是：如果使用 viewcontroller.tarBarItem 设置，如[viewcontroller.tarBarItem setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:11]} forState:UIControlStateNormal];
那么为TabBarItem设置的选中颜色会失效
+ (void)initialize {
// 通过appearance统一设置所有UITabBarItem的文字属性
// 后面带有UI_APPEARANCE_SELECTOR的方法,都可以通过appearance对象来统一设置
// 正常情况下的属性
NSMutableDictionary *attrs = [NSMutableDictionary dictionary];
attrs[NSFontAttributeName] = [UIFont systemFontOfSize:10];
attrs[NSForegroundColorAttributeName] = [UIColor colorWithHexString:@"#666666"];
// 选中情况下的属性
NSMutableDictionary *attrsSelected = [NSMutableDictionary dictionary];
attrsSelected[NSFontAttributeName] = attrs[NSFontAttributeName];
attrsSelected[NSForegroundColorAttributeName] = [UIColor colorWithHexString:@"#28D769"];
UITabBarItem *item = [UITabBarItem appearance];
[item setTitleTextAttributes:attrs forState:UIControlStateNormal];
[item setTitleTextAttributes:attrsSelected forState:UIControlStateSelected];
[UITabBar appearance].translucent = NO;
[[UITabBar appearance]setBackgroundImage:WTVImage(@"icon_tabbarImage")];
//设置title的位置
[[UITabBarItem appearance] setTitlePositionAdjustment:UIOffsetMake(0, -3)];
}
