Uikit Framework (5) Controller creation

In Uikit, Uiviewcontroller and its subclasses describe the view controller, which is a page

This article describes the three main ways to create a controller

• Pure Code Creation

That is: Alloc+init way, such as:

Amviewcontroller * VC = [[Amviewcontroller alloc] init];

• Load from Storyboard

A. Creating a Uistoryboard object

+ (Uistoryboard *) Storyboardwithname: (NSString *) name bundle: (nsbundle*) Storyboardbundleornil

Name parameter: Storyboard file name with no extension

Storyboardbundleornil parameter: Pass nil can

B. Getting the Controller object from a Uistoryboard object

-(ID) instantiateinitialviewcontroller//Remove unique initial controller-(ID) Instantiateviewcontrollerwithidentifier: (NSString *) Identifier//by ID

Such as:

Uistoryboard * Stoyrboard = [Uistoryboard storyboardwithname:@ "main" bundle:nil];//amviewcontroller *VC = [Stoyrboard Instantiateinitialviewcontroller]; Amviewcontroller *VC = [Stoyrboard instantiateviewcontrollerwithidentifier:@ "Redviewcontroller"];

Controller ID: Multiple controllers can be designed in the storyboard file, each controller can manage an ID

650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/7C/9C/wKiom1bTqCaA396EAABTRm5h0X8778.png "title=" screen shot 2016-02-29 a.m. 10.06.34.png "alt=" Wkiom1btqcaa396eaabtrm5h0x8778.png "/>

• Load from Xib

Xib Design controller View, there are the following two ways:

Method One:

The controller can be placed in the xib, such as:

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/7C/9C/wKiom1bTqHmwEvH8AAAlBbSCbtY333.png "title=" screen shot 2016-02-29 a.m. 10.10.07.png "alt=" Wkiom1btqhmwevh8aaalbbscbty333.png "/>

NSBundle loadnibnamed is still used in the code: created from NIB

Design of the controller, you can also set the associated subclass type

-(Nsarray *) loadnibnamed: (NSString *) name owner: (ID) Owner options: (Nsdictionary *) options

Name parameter: The file name of the passed Xib file (without the suffix name)

The remaining parameters are nil using the default values

Return value: An array of all objects in the Xib file, typically a xib file that only designs one object

Such as:

Amviewcontroller * VC = [[[NSBundle Mainbundle] loadnibnamed:@ "xxx"] lastobject];

Method Two:

A view is still placed in the Xib, the file ' s owner in Xib is selected, and the class is set to the controller subclass

650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/7C/9C/wKiom1bTqpHSqwInAAAwul7-ldg677.png "title=" screen shot 2016-02-29 a.m. 10.19.04.png "alt=" wkiom1btqphsqwinaaawul7-ldg677.png "/> 650" this.width=650; "src=" Http://s3.51cto . Com/wyfs02/m02/7c/9b/wkiol1btqu2b8o36aaa5qg3_pvc464.png "title=" screenshot 2016-02-29 a.m. 10.18.37.png "Alt=" Wkiol1btqu2b8o36aaa5qg3_pvc464.png "/>

Right-click File ' s Owner,view property to connect to the View object in Xib

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M01/7C/9B/wKioL1bTqsyywinFAAB-d6aX16Y221.png "title=" screen shot 2016-02-29 a.m. 10.17.09.png "alt=" Wkiol1btqsyywinfaab-d6ax16y221.png "/>

The code uses the Uiviewcontroller init method to create its view from the Xib

-(Instancetype) Initwithnibname: (NSString *) nibname Bundle: (NSBundle *) nibbundle

Nibname parameter: Xib file name, not including suffix name

Nibbundle parameter: Pass nil can

Such as:

Amviewcontroller * VC = [[Amviewcontroller alloc] initwithnibname:@ "View" bundle:nil];

This article is from the "Teacheran" blog, make sure to keep this source http://annmeng.blog.51cto.com/3321237/1745898

Uikit Framework (5) Controller creation