IOS development (3) view creation and switching

• Purpose

Learn how to create and switch a view

• Environment

Mac OS X 10.7.2

Xcode4.2

• Details
  • Create another viewcontroller In the storyboard and use segue to switch

Add another viewcontroller to the storyboard. Add a button to each of the two viewcontrollers. Right-click the button and drag and drop the "Modal" circle in the pop-up menu to another viewcontroller.

• Create another viewcontroller in the xib file and use the code to manually switch

Add a file to the project, select create "uiviewcontroller subclass", select "with XIB for user interface" in the wizard, and name it "secondviewcontroller". Then, 3 files are displayed: "secondviewcontroller. H "," secondviewcontroller. m "," secondviewcontroller. XIB ".

Add a button in XIB and add an event handler for it. Add the following code to the function to exit the current view and return to the home page:

- (IBAction)exitCurrentView:(id)sender {    [self.view removeFromSuperview];}

Add the corresponding XIB variable to viewcontroller. H on the homepage, as shown below:

@interface ViewController : UIViewController{    SecondViewController* secondViewController;}

The code of the switch button event function is as follows:

- (IBAction)switchToSecondView:(id)sender {    secondViewController=[[SecondViewController new]                          initWithNibName:@"SecondViewController"                          bundle:nil];    [self.view addSubview:secondViewController.view];}

• Manually create a view in the Code and use the code to manually switch

-(Ibaction) switchtothirdview :( ID) sender {// create view thirdview = [[uiview alloc] initwithframe: Self. view. bounds]; thirdview. backgroundcolor = [uicolor greencolor]; // Add the control uibutton * button for the view = [uibutton buttonwithtype: uibuttontyperoundedrect]; button. frame = cgrectmake (100,100,100,100); [Button settitle: @ "" forstate: uicontrolstatenormal]; [Button addtarget: Self action: @ selector (exitthirdview :) forcontrolevents: uicontroleventtouchupinside]; [thirdview addsubview: button]; // display the view. // Add it to the animation bar. [uiview beginanimations: @ "flipping View" context: Nil]; [uiview setanimationduration: 1]; [uiview setanimationtransition: uiviewanimationtransitionflipfromleft forview: Self. view cache: No]; [self. view addsubview: thirdview]; [uiview commitanimations];}-(void) exitthirdview :( ID) sender {// Add the animation effect to it [uiview beginanimations: @ "flipping View" context: nil]; [uiview setanimationduration: 1]; [uiview setanimationtransition: uiviewanimationtransitionflipfromright forview: Self. view cache: No]; [thirdview removefromsuperview]; [uiview commitanimations];}

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