iOS pushViewController 時候隱藏 TabBar 的可以用
@interfaceUIViewController (UINavigationControllerItem)
@property(nonatomic,readonly,strong)UINavigationItem*navigationItem;// Created on-demand so that a view controller may customize its navigation appearance.
@property(nonatomic)BOOL hidesBottomBarWhenPushed __TVOS_PROHIBITED;// If YES, then when this view controller is pushed into a controller hierarchy with a bottom bar (like a tab bar), the bottom bar will slide out. Default is NO.
這是系統提供的 UINavigationViewController 的方法。你只需要在被push 的 UIViewcontroller 的初始化方法中添加這個屬性就行。
self.hidesBottomBarWhenPushed = YES;
這樣有2個問題
1. 是做 pushViewController transition 過渡的時候，動畫中會看到 tabBar 被移出去，尤其是被push 的viewController 的背景色反差很大的時候，體驗很差。
2. presentViewController 的時候無法使用這個方法。
解決方法：
自己控制 UITabBarViewController 的 bottom tabBar。setFrame的方法控制。
- (void)hideTabBar {
[self setTabBarHidden:YES];
}- (void)showTabBar {
[self setTabBarHidden:NO];
|}
- (void) setTabBarHidden:(BOOL)hidden {
CGRect screenRect = [[UIScreen mainScreen] bounds];
floatfHeight = screenRect.size.height;
if(UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation))
fHeight = screenRect.size.width;
if(!hidden) fHeight -=self.tabBar.frame.size.height;
[UIViewanimateWithDuration:0.25 animations: ^{
for(UIView*view in self.view.subviews) {
if([view isKindOfClass:[UITabBar class]]) {
[view setFrame:CGRectMake(view.frame.origin.x, fHeight, view.frame.size.width, view.frame.size.height)];
}else{
if(hidden) [viewsetFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, fHeight)];
}
}
}completion:^(BOOLfinished) {
if(!hidden) {
[UIViewanimateWithDuration:0.25animations: ^{
for(UIView*viewinself.view.subviews) {
if(![viewisKindOfClass:[UITabBarclass]])
[viewsetFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, fHeight)];
}
}];
}
}];
}
