隐藏和显示tabbar

   除了使用

    hidesBottomBarWhenPushed = YES;

这个方法的另外一个方法

https://github.com/idevsoftware/Cocoa-Touch-Additions/tree/master/UITabBarController_setHidden

http://stackoverflow.com/questions/6383069/how-to-hide-show-tab-bar-of-a-view-with-a-navigation-bar-in-ios

#import <UIKit/UIKit.h>

 

@interface UITabBarController (HideTabBar)

 

@property (nonatomic, getter=isTabBarHidden) BOOL tabBarHidden;

 

- (void)setTabBarHidden:(BOOL)hidden animated:(BOOL)animated;

//
//  UITabBarController+HideTabBar.m
//  NPS
//
//  Created by Carlos Oliva on 04-02-12.
//  Copyright (c) 2012 iDev. All rights reserved.
//

#import "UITabBarController+HideTabBar.h"

#define kAnimationDuration .3


@implementation UITabBarController (HideTabBar)

- (BOOL)isTabBarHidden {
    CGRect viewFrame = self.view.frame;
    CGRect tabBarFrame = self.tabBar.frame;
    return tabBarFrame.origin.y >= viewFrame.size.height;
}


- (void)setTabBarHidden:(BOOL)hidden {
    [self setTabBarHidden:hidden animated:NO];
}


- (void)setTabBarHidden:(BOOL)hidden animated:(BOOL)animated {
    BOOL isHidden = self.tabBarHidden;
    if(hidden == isHidden)
        return;
    UIView *transitionView = [[[self.view.subviews reverseObjectEnumerator] allObjects] lastObject];
    if(transitionView == nil) {
        NSLog(@"could not get the container view!");
        return;
    }
    CGRect viewFrame = self.view.frame;
    CGRect tabBarFrame = self.tabBar.frame;
    CGRect containerFrame = transitionView.frame;
    tabBarFrame.origin.y = viewFrame.size.height - (hidden ? 0 : tabBarFrame.size.height);
    containerFrame.size.height = viewFrame.size.height - (hidden ? 0 : tabBarFrame.size.height);
    [UIView animateWithDuration:kAnimationDuration 
                     animations:^{
                         self.tabBar.frame = tabBarFrame;
                         transitionView.frame = containerFrame;
                     }
     ];
}


@end