IOS8 new Features (1)--uialertcontroller

I. Introduction of IOS8

IOS8 new features, mainly on the UI is unified

1, Uialertcontroller 2, Uipresentaioncontroller: Manage all the controllers through modal (see note) 3, Uipopoverpresentationcontroller 4, Sizeclass + AutoLayout 5, app Extension app extension 6, Core Image (IOS 5 starts with, filter beauty 美图秀秀 type) II, Uialertcontroller 1, used in the past when we use the UIA Lertview and Uiactionsheet

1 //option Popup etc.2-(void) Alertviewold3 {4     Uialertview*alert = [[Uialertview alloc]initwithtitle:@"111"Message@"222" Delegate: Nil Cancelbuttontitle:@"Cancel"Otherbuttontitles:@"Determine", nil];5Alert.alertviewstyle = Uialertviewstyleloginandpasswordinput;//4 different ways6 [alert show];7     8     //If you want to listen to a click event, you need to set up the corresponding Proxy and act on the proxy method .9 }Ten  One //Bottom Popup A-(void) Aletsheetold - { -     Uiactionsheet*action = [[Uiactionsheet alloc]initwithtitle:@"111" Delegate: Nil Cancelbuttontitle:@"Cancel"Destructivebuttontitle:@"hesitate"Otherbuttontitles:@"Determine", nil]; the      - [Action ShowInView:self.view]; -}

2, and starting from iOS8, Uialertcontroller = Uialertview + uialertsheet

1 #pragmaMark--New IOS82 3-(void)New4 {5     //1. Create the middle popup: Uialertview6Uialertcontroller *alert = [Uialertcontroller alertcontrollerwithtitle:@"title"Message@"Popup Information"Preferredstyle:uialertcontrollerstylealert];7     8     //Create a popup at the bottom: Uialertsheet9     //Uialertcontroller *alert = [Uialertcontroller alertcontrollerwithtitle:@ "title" message:@ "pop-up Info" PreferredStyle: Uialertcontrollerstyleactionsheet];Ten      One     //2. Add a button (no proxy required) A      -     //there is a need to prevent circular references (you can inherit uialertcontroller by creating a new controller, printing information in dealloc, verifying that there is a final release) -__weaktypeof(alert) Weakalert =Alert; the[Alert addaction:[uialertaction Actionwithtitle:@"Determine"Style:uialertactionstyledestructive handler:^ (Uialertaction *action) { -          -NSLog (@"%@", [weakAlert.textFields.firstObject text]); -          +     }]]; -[Alert addaction:[uialertaction Actionwithtitle:@"Cancel"Style:uialertactionstylecancel Handler:nil]]; +[Alert addaction:[uialertaction Actionwithtitle:@"default"Style:uialertactionstyledefault Handler:nil]]; A      at     //3, add the text box (can only be added to the Uialertcontrollerstylealert style, if it is Preferredstyle:uialertcontrollerstyleactionsheet will crash)  -[Alert addtextfieldwithconfigurationhandler:^ (Uitextfield *TextField) { -          -Textfield.textcolor =[Uicolor Redcolor]; -Textfield.text =@"11111"; -          in         //listen to the text changes (if it is with the notice, remove the time to be aware of, click OK or cancel when you need to remove, more trouble) - [TextField addtarget:self Action: @selector (textfieldsvaluedidchange:) FORCONTROLEVENTS:UICONTROLEVENTEDITINGC Hanged]; to     }]; +[AlertAddtextfieldwithconfigurationhandler:^ (Uitextfield *TextField) { -          theTextfield.securetextentry =YES; *Textfield.text =@"22222"; $     }];Panax Notoginseng      -     //4, eject the controller, if you want to use modal the [self Presentviewcontroller:alert animated:yes completion:nil]; + } A  the-(void) Textfieldsvaluedidchange: (Uitextfield *) TextField + { -NSLog (@"%@", textfield.text); $}

3. The same way for iphone and ipad

1 #pragmaMark--New iOS8 in IPad2 /**3 * Note:4 Uialertcontrollerstyleactionsheet5 1. Cannot have text box6 2, in the ipad, must use the form of popover to show7  8 It's all in present .9  */Ten-(void) Newinpad One { A     //1, create the bottom of the popup: Uialertsheet -Uialertcontroller *alert = [Uialertcontroller alertcontrollerwithtitle:@"title"Message@"Popup Information"Preferredstyle:uialertcontrollerstyleactionsheet]; -      the     //1.1 This code can not write, because the default will be in the form of Uimodalpresentationpopover -Alert.Modalpresentationstyle=Uimodalpresentationpopover; -  -     //1.2 Set the PopOver pointing button (this code will be ignored in the iphone and will be implemented in the ipad) +Alert.Popoverpresentationcontroller. Barbuttonitem =Self.navigationItem.leftBarButtonItem; -      +     //2. Add a button (no proxy required) A      at     //there is a need to prevent circular references (you can inherit uialertcontroller by creating a new controller, printing information in dealloc, verifying that there is a final release) -__weaktypeof(alert) Weakalert =Alert; -[AlertAddaction: [Uialertaction Actionwithtitle:@"Determine"Style:uialertactionstyledestructive handler:^ (Uialertaction *action) { -          -NSLog (@"%@", [weakAlert.textFields.firstObject text]); -          in     }]]; -[Alert addaction:[uialertaction Actionwithtitle:@"Cancel"Style:uialertactionstylecancel Handler:nil]]; to[Alert addaction:[uialertaction Actionwithtitle:@"default"Style:uialertactionstyledefault Handler:nil]]; +      -     //4, eject the controller, if you want to use modal the [Self presentviewcontroller: Alert Animated:yes Completion:nil]; *}

Attention:

Uialertcontrollerstyleactionsheet

1. Cannot have text box

2, in the ipad, must use the form of popover to show

IOS8 new Features (1)--uialertcontroller