Multiple sub-controllers in the same interface switch views

Look at the example first:

Essenceviewcontroller is the parent controller.
Allviewcontroller = "All
Videoviewcontroller = "video
Voiceviewcontroller = "Sound
Pictureviewcontroller = "Picture
Wordviewcontroller = "Satin

First, analysis
1. Top menu Bar
The large UIView contains a sub-uiview (menu-selected bottom indicator) and 5 menu UIButton.
2. The intermediate content area is Uiscrollview. Click on the different menu switch sub-controller, scroll ScrollView also want to switch, and the menu bar also follow the switch.

Second, detailed look at the code

////ESSENCEVIEWCONTROLLER.M#Import "EssenceViewController.h"#Import "RecommendTagsViewController.h"#Import "AllViewController.h"#Import "VideoViewController.h"#Import "VoiceViewController.h"#Import "PictureViewController.h"#Import "WordViewController.h"@interfaceEssenceviewcontroller () <UIScrollViewDelegate>/** * Label Bottom RED indicator */@property(Nonatomic,weak) UIView *indicatorview;/** * Buttons inside the top label currently selected * /@property(Nonatomic,weak) UIButton *selectedbutton;/** * Top all Tab view * /@property(Nonatomic,weak) UIView *titlesview;/** * Content View * /@property(Nonatomic,weak) Uiscrollview *contentview;@end@implementationessenceviewcontroller-(void) Viewdidload {[SuperViewdidload];//Set navigation bar[Self setupnav];//Initialize all of the child controllers[Self setupchildvces];//Set the tab bar at the top[Self setuptitlesview];//Bottom Cententview[Self setupcontentview];}/** * Initialize all sub-controllers * /- (void) setupchildvces{Allviewcontroller *all = [[Allviewcontroller alloc] init];    [Self addchildviewcontroller:all];    Videoviewcontroller *video = [[Videoviewcontroller alloc]init];    [Self addchildviewcontroller:video];    Voiceviewcontroller *voice = [[Voiceviewcontroller alloc] init];    [Self addchildviewcontroller:voice];    Pictureviewcontroller *picture = [[Pictureviewcontroller alloc] init];    [Self addchildviewcontroller:picture];    Wordviewcontroller *word = [[Wordviewcontroller alloc] init]; [Self Addchildviewcontroller:word];}/** * Bottom Cententview * /- (void) setupcontentview{//Do not automatically adjust the insetSelf.automaticallyadjustsscrollviewinsets = NO;    Uiscrollview *contentview = [[Uiscrollview alloc] init];    Contentview.frame = Self.view.bounds;    Contentview.delegate = self;    contentview.pagingenabled = YES; [Self.view Insertsubview:contentview Atindex:0]; Contentview.contentsize = Cgsizemake (Contentview.width * Self.childViewControllers.count,0); Self.contentview = Contentview;//Add view for first controller[Self scrollviewdidendscrollinganimation:contentview];}/** * Set the top tab bar */- (void) setuptitlesview{//tab bar overallUIView *titlesview = [[UIView alloc] init]; Titlesview.backgroundcolor = [[Uicolor Whitecolor] Colorwithalphacomponent:0.7];    Titlesview.width = Self.view.width; Titlesview.height = *; TITLESVIEW.Y = -;    [Self.view Addsubview:titlesview]; Self.titlesview = Titlesview;//Bottom Red indicatorUIView *indicatorview = [[UIView alloc] init];    Indicatorview.backgroundcolor = [Uicolor Redcolor]; Indicatorview.height =2; Indicatorview.tag =-1;    Indicatorview.y = Titlesview.height-indicatorview.height; Self.indicatorview = Indicatorview;//Internal Sub-labelNsarray *titles = @[@"All",@"Video",@"Sound",@"Pictures",@"Satin"];    CGFloat height = titlesview.height; CGFloat width = titlesview.width/titles.count; for(Nsinteger i=0; i<titles.count;        i++) {UIButton *button = [[UIButton alloc] init];        Button.tag = i;        Button.height = height;        Button.width = width;        button.x = i * button.width;        [Button settitle:titles[i] forstate:uicontrolstatenormal]; [Button layoutifneeded];//Force layout (Force update of the child control's frame)[Button Settitlecolor:[uicolor Graycolor] forstate:uicontrolstatenormal];        [Button Settitlecolor:[uicolor Redcolor] forstate:uicontrolstatedisabled]; Button.titleLabel.font = [Uifont systemfontofsize: -]; [Button addtarget:self action:@selector(Titleclick:) forcontrolevents:uicontroleventtouchupinside]; [Titlesview Addsubview:button];//Click the first button by default        if(i = =0) {button.enabled = NO; Self.selectedbutton = button;//Let the label inside the button calculate the size according to the text content[Button.titlelabel SizeToFit];            Self.indicatorView.width = Button.titleLabel.width;        Self.indicatorView.centerX = Button.centerx; }    }//Indicatorview last added to Titlesview    //For the back from the Titlesview to take the button convenient[Titlesview Addsubview:indicatorview];}/** * Click the button in the tab bar */- (void) Titleclick: (UIButton *) button{//Modify the state of the buttonself.selectedButton.enabled = YES;    button.enabled = NO; Self.selectedbutton = button;//Let the tag perform animation[UIView animatewithduration:. 025animations:^{self.indicatorView.width = self.selectedButton.titleLabel.width;    Self.indicatorView.centerX = Self.selectedButton.centerX; }];//Rolling ContentviewCgpoint offset = Self.contentView.contentOffset;    Offset.x = Button.tag * self.contentView.width; [Self.contentview Setcontentoffset:offset animated:yes];}/** * Set navigation bar * /- (void) setupnav{//Set navigation bar titleSelf.navigationItem.titleView = [[Uiimageview alloc] Initwithimage:[uiimage imagenamed:@"Maintitle"]];//Set the button on the left side of the navigation barSelf.navigationItem.leftBarButtonItem = [Uibarbuttonitem itemwithimage:@"Maintagsubicon"highimage:@"Maintagsubiconclick"Target:self Action:@selector(Tagbuttonclick)];//Set background colorSelf.view.backgroundColor = Globalbgcolor;}/** * Click the button on the left side of the navigation bar */- (void) tagbuttonclick{Recommendtagsviewcontroller *VC = [[Recommendtagsviewcontroller alloc] init]; [Self.navigationcontroller PUSHVIEWCONTROLLER:VC animated:yes];} #pragma mark-<UIScrollViewDelegate>/** * This method is called when scrolling is complete (if not manually dragged ScrollView causes scrolling to complete.- (void) Scrollviewdidendscrollinganimation: (Uiscrollview *) scrollview{//Current indexNsinteger index = scrollview.contentoffset.x/scrollview.width;//Remove sub-controllerUitableviewcontroller *VC = Self.childviewcontrollers[index];    vc.view.x = Scrollview.contentoffset.x; VC.VIEW.Y =0;//Set the Y value of the controller view to 0 (by default)Vc.view.height = Scrollview.height;//Set the height value of the controller view to the entire screen (the default is less than the screen height)    //Set inner marginCGFloat top = Cgrectgetmaxy (Self.titlesView.frame);    CGFloat bottom = self.tabBarController.tabBar.height; Vc.tableView.contentInset = Uiedgeinsetsmake (Top,0, Bottom,0);//Set the inner margin of the scroll barVc.tableView.scrollIndicatorInsets = Vc.tableView.contentInset; [ScrollView AddSubview:vc.view];}/** * Execute when ScrollView stops sliding * /- (void) Scrollviewdidenddecelerating: (Uiscrollview *) scrollview{[self scrollviewdidendscrollinganimation:scrollview];//Click the menu buttonNsinteger index = scrollview.contentoffset.x/scrollview.width; [Self titleclick:self.titlesview.subviews[index]];}@end

Third, other
The above code also uses a uiview category:

////Uiview+extension.h//Package Frame modification#import <UIKit/UIKit.h>  @interface UIView (Extension)@property(nonatomic,Assign)cgsizeSize@property(nonatomic,Assign)CGFloatWidth@property(nonatomic,Assign)CGFloatHeight@property(nonatomic,Assign)CGFloatX@property(nonatomic,Assign)CGFloatY@property(nonatomic,Assign)CGFloatCenterX;@property(nonatomic,Assign)CGFloatCenterY;/* Declares @property in the taxonomy, generates only the declaration of the method, does not generate the implementation of the method and the member variable with the _ Underscore */@end

////UIVIEW+EXTENSION.M#import "Uiview+extension.h"  @implementation UIView (Extension)- (void) SetSize: (cgsize) Size {CGRectframe = Self. Frame; Frame. Size= size; Self. Frame= frame;} - (cgsize) Size {return  Self. Frame. Size;} - (void) SetWidth: (CGFloat) Width {CGRectframe = Self. Frame; Frame. Size. Width= width; Self. Frame= frame;} - (CGFloat) Width {return   Self. Frame. Size. Width;} - (void) SetHeight: (CGFloat) Height {CGRectframe = Self. Frame; Frame. Size. Height= height; Self. Frame= frame;} - (CGFloat) Height {return  Self. Frame. Size. Height;} - (void) SetX: (CGFloat) x {CGRectframe = Self. Frame; Frame. Origin. x= x; Self. Frame= frame;} - (CGFloat) x {return  Self. Frame. Origin. x;} - (void) Sety: (CGFloat) y {CGRectframe = Self. Frame; Frame. Origin. Y= y; Self. Frame= frame;} - (CGFloat) y {return   Self. Frame. Origin. Y;} - (void) Setcenterx: (CGFloat) centerx{CgpointCenter = Self. Center; Center. x= CenterX; Self. Center= center;} - (CGFloat) centerx{return  Self. Center. x;} - (void) Setcentery: (CGFloat) centery{CgpointCenter = Self. Center; Center. Y= CenterY; Self. Center= center;} - (CGFloat) centery{return  Self. Center. Y;}@end

Multiple sub-controllers in the same interface switch views