Custom UITabBarController Class

- (void)viewDidAppear:(BOOL)animated {
    [super viewWillAppear:animated];

    [self hideTabBar];
    [self addCustomElements];
}

- (void)hideTabBar
{
    for(UIView *view in self.view.subviews)
    {
        if([view isKindOfClass:[UITabBar class]])
        {
            view.hidden = YES;
            break;
        }
    }
}

- (void)hideNewTabBar 
{
    self.btn1.hidden = 1;
    self.btn2.hidden = 1;
    self.btn3.hidden = 1;
    self.btn4.hidden = 1;
}

- (void)showNewTabBar 
{
    self.btn1.hidden = 0;
    self.btn2.hidden = 0;
    self.btn3.hidden = 0;
    self.btn4.hidden = 0;
}

-(void)addCustomElements
{
    UIImage *btnImage = [UIImage imageNamed:@\"UITabBarFirst.png\"];
    UIImage *btnImageSelected = [UIImage imageNamed:@\"UITabBarFirstSelected.png\"];

    self.btn1 = [UIButton buttonWithType:UIButtonTypeCustom];
    btn1.frame = CGRectMake(0, 430, 80, 50); 
    [btn1 setBackgroundImage:btnImage forState:UIControlStateNormal]; 
    [btn1 setBackgroundImage:btnImageSelected forState:UIControlStateSelected]; 
    [btn1 setTag:0];
    [btn1 setAdjustsImageWhenHighlighted:NO];
    [btn1 setSelected:true];

    btnImage = [UIImage imageNamed:@\"UITabBarSecond.png\"];
    btnImageSelected = [UIImage imageNamed:@\"UITabBarSecondSelected.png\"];
    self.btn2 = [UIButton buttonWithType:UIButtonTypeCustom];
    btn2.frame = CGRectMake(80, 430, 80, 50);
    [btn2 setBackgroundImage:btnImage forState:UIControlStateNormal];
    [btn2 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
    [btn2 setTag:1];
    [btn2 setAdjustsImageWhenHighlighted:NO];

    btnImage = [UIImage imageNamed:@\"UITabBarThird.png\"];
    btnImageSelected = [UIImage imageNamed:@\"UITabBarThirdSelected.png\"];
    self.btn3 = [UIButton buttonWithType:UIButtonTypeCustom];
    btn3.frame = CGRectMake(160, 430, 80, 50);
    [btn3 setBackgroundImage:btnImage forState:UIControlStateNormal];
    [btn3 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
    [btn3 setTag:2];
    [btn3 setAdjustsImageWhenHighlighted:NO];

    btnImage = [UIImage imageNamed:@\"UITabBarFourth.png\"];
    btnImageSelected = [UIImage imageNamed:@\"UITabBarFourthSelected.png\"];
    self.btn4 = [UIButton buttonWithType:UIButtonTypeCustom];
    btn4.frame = CGRectMake(240, 430, 80, 50);
    [btn4 setBackgroundImage:btnImage forState:UIControlStateNormal];
    [btn4 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
    [btn4 setTag:3];
    [btn4 setAdjustsImageWhenHighlighted:NO];

    [self.view addSubview:btn1];
    [self.view addSubview:btn2];
    [self.view addSubview:btn3];
    [self.view addSubview:btn4];

    [btn1 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
    [btn2 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
    [btn3 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
    [btn4 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
}

- (void)buttonClicked:(id)sender
{
    int tagNum = [sender tag];
    [self selectTab:tagNum];
}

- (void)selectTab:(int)tabID
{
    switch(tabID)
    {
        case 0:
            [btn1 setSelected:true];
            [btn2 setSelected:false];
            [btn3 setSelected:false];
            [btn4 setSelected:false];
            break;
        case 1:
            [btn1 setSelected:false];
            [btn2 setSelected:true];
            [btn3 setSelected:false];
            [btn4 setSelected:false];
            break;
        case 2:
            [btn1 setSelected:false];
            [btn2 setSelected:false];
            [btn3 setSelected:true];
            [btn4 setSelected:false];
            break;
        case 3:
            [btn1 setSelected:false];
            [btn2 setSelected:false];
            [btn3 setSelected:false];
            [btn4 setSelected:true];
            break;
    }   
    self.selectedIndex = tabID; 
}