iOS 学习之 UITabBarController

- (IBAction)btnClick:(id)sender {

    UITabBarController *tabBarCtrl = [[[UITabBarController alloc] init]autorelease];
    UITabBarItem *tabbarItemA = [[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemBookmarks tag:]autorelease];

    tabbarItemA.badgeValue = @"";

    UITabBarItem *tabbarItemB = [[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:]autorelease];
    UITabBarItem *tabbarItemC = [[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemHistory tag:]autorelease];
    UITabBarItem *tabbarItemD = [[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemDownloads tag:]autorelease];
    UITabBarItem *tabbarItemE = [[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemMore tag:]autorelease];
    UITabBarItem *tabbarItemF = [[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemSearch tag:]autorelease];

    TWFXViewAController *viewA = [[[TWFXViewAController alloc] initWithNibName:@"TWFXViewAController" bundle:nil]autorelease];
    viewA.tabBarItem = tabbarItemA;

    TWFXViewAController *viewB = [[[TWFXViewAController alloc] initWithNibName:@"TWFXViewBController" bundle:nil]autorelease];
    viewB.tabBarItem = tabbarItemB;

    TWFXViewAController *viewC = [[[TWFXViewAController alloc] initWithNibName:@"TWFXViewAController" bundle:nil]autorelease];
    viewC.tabBarItem = tabbarItemC;

    TWFXViewAController *viewD = [[[TWFXViewAController alloc] initWithNibName:@"TWFXViewBController" bundle:nil]autorelease];
    viewD.tabBarItem = tabbarItemD;

    TWFXViewAController *viewE = [[[TWFXViewAController alloc] initWithNibName:@"TWFXViewBController" bundle:nil]autorelease];
    viewE.tabBarItem = tabbarItemE;

    TWFXViewAController *viewF = [[[TWFXViewAController alloc] initWithNibName:@"TWFXViewBController" bundle:nil]autorelease];
    viewF.tabBarItem = tabbarItemF;

    tabBarCtrl.viewControllers = @[viewA,viewB,viewC,viewD,viewE,viewF];
    tabBarCtrl.customizableViewControllers =@[viewD,viewE,viewF];
    [tabBarCtrl setSelectedIndex:];

    [self presentViewController:tabBarCtrl animated:YES completion:nil];
}