iOS Basics (10) Use of--uinavgationcontroller (i) Uibarbuttonitem additions

Uinavigationcontroller is also a navigation controller, inherited from the Uiviewcontroller, a stack of the way to manage the control of the view controller, the following details about the use of Uinavigationcontroller:

1, first create a new project (not much to say) the creation of Rootviewcontroller (inherited from the Uiviewcontroller).

2. Open the AppDelegate.h file to add properties

3. Open the APPDELEGATE.M file

-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) The Launchoptions method adds the Navcontroller and root view (Rootviewcontroller).

1-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchoptions {2     //Override point for customization after application launch.3     4Self.window =[[UIWindow alloc] initwithframe:[[uiscreen mainscreen] bounds];5Rootviewcontroller *ROOTVC =[[Rootviewcontroller alloc] init];6Rootvc.title =@"Rootviewcontroller";7     8     //Initialize Navcontroller9Self.navcontroller =[[Uinavigationcontroller alloc] init];Ten     //add push action to ROOTVC One [Self.navcontroller PUSHVIEWCONTROLLER:ROOTVC animated:yes]; A     //Add the navcontroller to the window - [Self.window AddSubview:self.navController.view]; -      the [Self.window makekeyandvisible]; -      -     returnYES; -}

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4. Add uibarbuttonitem

Note:Uibarbuttonitem is divided into Leftbarbuttonitem and Rightbarbuttonitem;

1 #import "RootViewController.h"2 3 @interfaceRootviewcontroller () {4 5Uibarbuttonitem *LeftButton;6Uibarbuttonitem *Rightbutton;7 8 }9 Ten @end One  A @implementationRootviewcontroller -  -- (void) Viewdidload { the [Super Viewdidload]; -     //Do any additional setup after loading the view from its nib. -      -LeftButton =[[Uibarbuttonitem alloc] Initwithbarbuttonsystemitem:uibarbuttonsystemitemedit target:self action: @selector ( Leftbuttonaction:)]; +Self.navigationItem.leftBarButtonItem =LeftButton; -      +Rightbutton =[[Uibarbuttonitem alloc] Initwithbarbuttonsystemitem:uibarbuttonsystemitemcancel target:self action: @selector ( Rightbuttonaction:)]; ASelf.navigationItem.rightBarButtonItem =Rightbutton; at      -      -}

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Here's another word Initwithbarbuttonsystemitem: The system comes with a button style:

Uibarbuttonsystemitemdone: Blue text button, labeled "Done";

Uibarbuttonsystemitemcancel: Text button, labeled "Cancel";

Uibarbuttonsystemitemedit: Text button, marked with "Edit";

Uibarbuttonsystemitemsave: Blue text button, labeled "Save";

Uibarbuttonsystemitemadd: Image button with a å symbol above;

Uibarbuttonsystemitemflexiblespace: Blank, the space size is variable;

Uibarbuttonsystemitemfixedspace: Blank placeholder;

Uibarbuttonsystemitemcompose: Image button with a pen and paper on it;

Uibarbuttonsystemitemreply: Image button with a reply arrow on it;

Uibarbuttonsystemitemaction: Image button with an action arrow on it;

Uibarbuttonsystemitemorganize: Image button, with a folder and a down arrow;

Uibarbuttonsystemitembookmarks: Image button with bookmark icon on it;

Uibarbuttonsystemitemsearch: Image button with spotlight icon on it;

Uibarbuttonsystemitemrefresh: Image button with a circular refresh arrow on it;

Uibarbuttonsystemitemstop: Image button with a stop Mark X on it;

Uibarbuttonsystemitemcamera: Image button with a camera on it;

Uibarbuttonsystemitemtrash: Image button with a trash bin on it;

Uibarbuttonsystemitemplay: Image button with a play icon on it;

Uibarbuttonsystemitempause: Image button with a pause icon on it;

Uibarbuttonsystemitemrewind: Image button with a rewind icon on it;

Uibarbuttonsystemitemfastforward: Image button with a fast forward icon;

5, therealization of Uibarbuttonitem events

1- (void) Leftbuttonaction: (uibarbuttonitem*) leftaction{2 3Uialertview *leftalert = [[Uialertview alloc] Initwithtitle:@"Tips"Message@"do you want to continue editing" Delegate: Self Cancelbuttontitle:@"is a"Otherbuttontitles:@"No", nil];4 [Leftalert show];5 }6 7- (void) Rightbuttonaction: (uibarbuttonitem*) rightaction{8 9Uialertview *rightalert = [[Uialertview alloc] Initwithtitle:@"Tips"Message@"Exit" Delegate: Self Cancelbuttontitle:@"is a"Otherbuttontitles:@"No", nil];Ten [Rightalert show]; One  A}

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iOS Basics (10) Use of--uinavgationcontroller (i) Uibarbuttonitem additions