从苹果文档的最大大小的一张图片在 TabBar 是 30 x 30 (60 x 60 的视网膜显示器）。
我不认为它是可能采取整个 TabBar 不拉伸图像的高度。我认为最好的解决办法是中心中使用 imageInset TabBar 的图像
tabBarItem1.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0);
否则你可以玩这 imageInset 和拉伸图像像在截图中
tabBarItem1.imageInsets = UIEdgeInsetsMake(0, -10, -6, -10);
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UITabBar *tabBar = tabBarController.tabBar;
UITabBarItem *tabBarItem1 = [tabBar.items objectAtIndex:0];
UITabBarItem *tabBarItem2 = [tabBar.items objectAtIndex:1];
UITabBarItem *tabBarItem3 = [tabBar.items objectAtIndex:2];
//add image to tabbarItems
tabBarItem1.imageInsets = UIEdgeInsetsMake(0, -10, -6, -10);
}
转播
[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
NSShadow *shadow = [[NSShadow alloc] init];
shadow.shadowColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0];
shadow.shadowOffset = CGSizeMake(0, 1);
// [UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:245.0/255.0 alpha:1.0]
[[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
[UIColor grayColor], NSForegroundColorAttributeName,
shadow, NSShadowAttributeName,
[UIFont fontWithName:@"Avenir-Medium" size:20.0], NSFontAttributeName, nil]];
UIBarButtonItem *cameraItem = [[UIBarButtonItem alloc] initWithImage:[self scaleImageToSize:[UIImage imageNamed:@"ico_location_up"] size:CGSizeMake(20, 26)] style:UIBarButtonItemStyleBordered target:self action:@selector(do)];
self.navigationItem.leftBarButtonItem = cameraItem;
//修改图片大小和控件一致
- (UIImage *)scaleImageToSize:(UIImage *)img size:(CGSize)size
{
UIGraphicsBeginImageContext(size);
[img drawInRect:CGRectMake(0, 0, size.width, size.height)];
UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return scaledImage;
}