切換子視圖控制器

- ( void ) configNvItem{

    UISegmentedControl * segmentontrol = [[ UISegmentedControl alloc ] initWithItems : @[ @" 曬場 " , @" 活動 " ] ];

    segmentontrol. tintColor = [ UIColor whiteColor ];

    segmentontrol. frame = CGRectMake ( 0 , 0 , 200 , 34 );

    NSDictionary *normalAttribute = [ NSDictionary dictionaryWithObjectsAndKeys :[ UIFont systemFontOfSize : 19 ], NSFontAttributeName , [ UIColor redColor ], NSForegroundColorAttributeName , nil ];

    NSDictionary *selectedAttribute = [ NSDictionary dictionaryWithObjectsAndKeys :[ UIFont systemFontOfSize : 19 ], NSFontAttributeName , kThemeColor , NSForegroundColorAttributeName , nil ];

    [segmentontrol setTitleTextAttributes :normalAttribute forState : UIControlStateNormal ];

    [segmentontrol setTitleTextAttributes :selectedAttribute forState : UIControlStateSelected ];

    [segmentontrol addTarget : self action : @selector (changeShowContent:) forControlEvents : UIControlEventValueChanged ];

    [segmentontrol setSelectedSegmentIndex : 0 ];

    [ self showContentAtType : 0 ];

    self . navigationItem . titleView = segmentontrol;

}

#pragma mark -User Interaction

- ( void ) changeShowContent:( UISegmentedControl *) segmentControl{

    [ self showContentAtType :segmentControl. selectedSegmentIndex ];

}

#pragma mark -Public Methods

- ( void ) showContentAtType:( NSInteger ) type{

    if (type == 0 ) {

        [ self . view addSubview : self . showViewController . view ];

        [ self . showViewController didMoveToParentViewController : self ];

        [ self . dynamicViewController willMoveToParentViewController : nil ];

        [ self . dynamicViewController . view removeFromSuperview ];

    } else {

        [ self . view addSubview : self . dynamicViewController . view ];

        [ self . dynamicViewController didMoveToParentViewController : self ];

        [ self . showViewController willMoveToParentViewController : nil ];

        [ self . showViewController . view removeFromSuperview ];

    }

}

#pragma mark -Access

#pragma mark 延遲初始化

- ( MFFriendViewController *) showViewController{

    if (! _showViewController ) {

        _showViewController = [[ MFFriendViewController alloc ] init ];

        [ self addChildViewController : _showViewController ];

         self . showViewController . view . frame = CGRectMake ( self . showViewController . view . frame . origin . x , self . view . frame . origin . y + 80 , self . view . frame . size . width , self . showViewController . view . frame . size . height - 100 );

    }

    return _showViewController ;

}

- ( MFMineViewController *) dynamicViewController{

    if (! _dynamicViewController ) {

        _dynamicViewController = [[ MFMineViewController alloc ] init ];

        [ self addChildViewController : _dynamicViewController ];

        self . dynamicViewController . view . frame = CGRectMake ( self . dynamicViewController . view . frame . origin . x , self . view . frame . origin . y + 80 , self . view . frame . size . width , self . dynamicViewController . view . frame . size . height - 100 );

    }

    return _dynamicViewController ; }