"iOS base control 15-2" Uitabbarcontroller Controller Management

A. Requirements1. Similar to QQ, top or bottom of the window conversion navigation bar 2. Add content to each page B.uitabbarcontroller1. Basic concept: (1) Content height iOS7 before content height: screen height-status bar height 44-bottom navigation bar height 49ios7 and after, content height is full screen 2. Using code creation Initialization (1) to create a Uitabbarcontrolleruitabbarcontroller use step

• Initialize Uitabbarcontroller
• Set the Rootviewcontroller for UIWindow to Uitabbarcontroller
• Depending on the case, add the corresponding number of sub-controllers by the Addchildviewcontroller method

(2) Add a sub-controller Uitabbarcontroller There are 2 ways to add a controller

• Adding a single child controller

-(void) Addchildviewcontroller: (Uiviewcontroller *) Childcontroller;

• Set up a sub-controller array

@property (nonatomic,copy) Nsarray *viewcontrollers;  If the Uitabbarcontroller has n sub-controllers, then there will be N Uitabbarbutton inside Uitabbar as child controls if Uitabbarcontroller has 4 sub-controllers, then the structure of Uitabbar is roughly as shown Appdelegate:

 1-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchOptions {2// Override point for customization after application launch. 3 4//Set window 5 Self.window = [[UIWindow alloc] init]; 6 self.window.frame = [[UIScreen mainscreen] bounds]; 7 Self.window.backgroundColor = [Uicolor Graycolor]; 8 [Self.window makekeyandvisible]; 9 10 11//Set a UITabBarController12 uitabbarcontroller *tabbarcontroller = [[Uitabbarcontroller alloc] init] ; Self.window.rootViewController = tabbarcontroller;14 15//Add sub-controller Uiviewcontroller *c1 = [[Uiviewcont Roller Alloc] init];17 c1.view.backgroundColor = [Uicolor redcolor];18//[Tabbarcontroller Addchildviewcontroller: c1];19 Uiviewcontroller *c2 = [[Uiviewcontroller alloc] init];21 c2.view.backgroundColor = [Uicolor Bluecolo R];22//[Tabbarcontroller addchildviewcontroller:c2];23 uiviewcontroller *c3 = [UiviewcontroLler alloc] init];25 c3.view.backgroundColor = [Uicolor greencolor];26] tabbarcontroller.viewcontrollers = @[ c1,c2,c3];28 return yes;31}

(3) Set the navigation bar option style Uitabbarbutton What is displayed inside, determined by the Tabbaritem property of the corresponding sub-controller


Uitabbaritem has the following properties that affect the content of Uitabbarbutton
Title text
@property (nonatomic,copy) NSString *title;

Icon
@property (Nonatomic,retain) UIImage *image;

Icon When selected
@property (Nonatomic,retain) UIImage *selectedimage;

Reminder number @property (nonatomic,copy) NSString *badgevalue; Appdelegate:

 1-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchOptions {2// Override point for customization after application launch. 3 4//Set window 5 Self.window = [[UIWindow alloc] init]; 6 self.window.frame = [[UIScreen mainscreen] bounds]; 7 Self.window.backgroundColor = [Uicolor Graycolor]; 8 [Self.window makekeyandvisible]; 9 10 11//Set a UITabBarController12 uitabbarcontroller *tabbarcontroller = [[Uitabbarcontroller alloc] init] ; Self.window.rootViewController = tabbarcontroller;14 15//Add sub-controller Uiviewcontroller *c1 = [[Uiviewcont Roller Alloc] init];17 c1.view.backgroundColor = [Uicolor redcolor];18 c1.tabBarItem.title = @ "Red"; +//[Tabba Rcontroller addchildviewcontroller:c1];20 Uiviewcontroller *c2 = [[Uiviewcontroller alloc] init];22 C2.view. BackgroundColor = [Uicolor bluecolor];23 c2.tabBarItem.title = @ "Blue"; +//[Tabbarcontroller Addchildviewcontroller:c2];25 Uiviewcontroller *c3 = [[Uiviewcontroller alloc] init];27 c3.view.backgroundColor = [ Uicolor greencolor];28 c3.tabBarItem.title = @ "green"; tabbarcontroller.viewcontrollers = @[c1,c2,c3];31 3 2 Return yes;34}

3. Use storyboard to create initialization (1) drag into Uitabbarcontroller (2) drag into n Uiviewcontroller to use (3) to set the Uitabbarcontroller sub-controller in sequence (4) Set the Tabbaritem out of the sub-controller: Note: Selected image is not set, the system will automatically program the original artwork blue as Selected image4. The life cycle of the sub-controller (1) The life cycle of a single sub-controller is the same as the normal controller life cycle

 1-(void) Viewdidload {2 [Super Viewdidload]; 3 NSLog (@ "%@-viewdidload", Self.class); 4} 5 6-(void) Viewwil Lappear: (BOOL) animated {7 [Super viewwillappear:animated]; 8 NSLog (@ "%@-viewwillappear", Self.class); 9}10 11 -(void) Viewdidappear: (BOOL) animated {[Super viewdidappear:animated];13 NSLog (@ "%@-viewdidappear", Self.class );}15-(void) Viewwilldisappear: (BOOL) animated {[Super viewwilldisappear:animated];18 NSLog (@ "%@-vieww     Illdisappear ", self.class);}20-(void) Viewdiddisappear: (BOOL) animated {[Super viewdiddisappear:animated];23 NSLog (@ "%@-viewdiddisappear", Self.class),}25-(void) didreceivememorywarning [[Super Didreceivememo] rywarning];29 NSLog (@ "%@-didreceivememorywarning", Self.class),}31-(void) Viewwillunload {[+] [Super VIEWW Illunload];34 NSLog (@ "%@-viewwillunload", self.class);}36 Notoginseng-(void) viewdidunload {[] [super viewdidunload]; NSLog (@ "%@-ViewDidunload ", self.class); 40} 

(2) Life cycle of two sub-controller transitions A. The first child controller appears view 2014-12-27 21:11:44.338 uitabbarcontrollerbystoryboard[22567:590996] Oneviewcontroller-viewdidload
2014-12-27 21:11:44.340 uitabbarcontrollerbystoryboard[22567:590996] oneviewcontroller-viewwillappear 2014-12-27 21:11:44.407 uitabbarcontrollerbystoryboard[22567:590996] oneviewcontroller-viewdidappearB. Switching to a second controller view 2014-12-27 21:12:10.042 uitabbarcontrollerbystoryboard[22567:590996] Twoviewcontroller-viewdidload
2014-12-27 21:12:10.042 uitabbarcontrollerbystoryboard[22567:590996] Twoviewcontroller-viewwillappear
2014-12-27 21:12:10.042 uitabbarcontrollerbystoryboard[22567:590996] Oneviewcontroller-viewwilldisappear
2014-12-27 21:12:10.054 uitabbarcontrollerbystoryboard[22567:590996] oneviewcontroller-viewdiddisappear 2014-12-27 21:12:10.055 uitabbarcontrollerbystoryboard[22567:590996] twoviewcontroller-viewdidappear C.app FrameWrap the previous Navigationcontroller before each sub-controller

"iOS base control 15-2" Uitabbarcontroller Controller Management