IOS Uialertview (Warning box) method summary

Summary of common methods for Uialertview (warning box) in iOS
First, the method of initialization- (Instancetype) Initwithtitle: (NSString*) title message: (NSString*) message delegate: (ID /*<uialertviewdelegate>*/) Delegate Cancelbuttontitle: (NSString*) Cancelbuttontitle otherbuttontitles: (NSString*) Otherbuttontitles, ...;

This method creates a warning box by setting a title, content, proxy, and some button titles, and the code example is as follows:

Uialertview * alert = [[Uialertview alloc]initwithtitle:@ "My Warning Box" message:@ "This is a warning box" Delegate:self cancelbuttontitle:@ "    Cancel "otherbuttontitles:@" OK ", nil"; [Alert show];

The effect is as follows:

Note: If the number of buttons is more than two, it will be created like this:

If the number of buttons exceeds the screen display range, an effect similar to TableView will be created.

Second, attribute and method analysis

Title Property

@property(nonatomic,copy) nsstring *title;

Content Properties

@property(nonatomic,copy) nsstring *message;

Add a button that returns the index value of this button

-(Nsinteger) Addbuttonwithtitle: (nsstring *) title;

returns the button title according to the button index

-(nsstring *) Buttontitleatindex: (nsinteger) Buttonindex;

Get the number of buttons

@property(nonatomic,readonly) nsinteger numberofbuttons;

Set set a button to cancel button

@property (nonatomic) Nsinteger Cancelbuttonindex;

Returns the index value of the first of the other type buttons

@property (nonatomic,readonly) Nsinteger Firstotherbuttonindex;

Whether the warning box is visible

@property(nonatomic,readonly,getter=isvisible) BOOL visible;

Show Warning Box

-(void) show;

Code simulation Click Button Disappears Trigger method

-(void) Dismisswithclickedbuttonindex: (nsinteger) buttonindex animated: (BOOL) animated;

Set Alert box style

@property(nonatomic,assign) uialertviewstyle alertviewstyle;

The enumeration of styles is as follows

typedef ns_enum (Nsinteger, uialertviewstyle) {Uialertviewstyledefault = 0,//default Style uialertviewstylesecuretextinput,// Password input box style uialertviewstyleplaintextinput,//ordinary input frame style uialertviewstyleloginandpasswordinput//account password box style};

This method sets the index of the text input box

-(uitextfield *) Textfieldatindex: (nsinteger) Textfieldindex;

Threemethods in the Uialertviewdelegate

How to trigger when a button is clicked

-(void) Alertview: (uialertview *) Alertview clickedbuttonatindex: (nsinteger) buttonindex ;

The method to trigger when the warning box will be displayed

-(void) Willpresentalertview: (uialertview *) Alertview;

Method triggered when a warning box has been displayed

-(void) Didpresentalertview: (uialertview *) Alertview;

The method that is triggered when the warning box is going to disappear

-(void) Alertview: (uialertview *) Alertview willdismisswithbuttonindex: (nsinteger) Buttonindex;

Method that is triggered when the warning box has disappeared

-(void) Alertview: (uialertview *) Alertview diddismisswithbuttonindex: (nsinteger) Buttonindex;

Sets whether the first button is allowed instead of the Cancel button

-(BOOL) Alertviewshouldenablefirstotherbutton: (uialertview *) Alertview;

IOS Uialertview (Warning box) method summary