How to Use uialertview

Uialertview is similar to the modal dialog box or MessageBox in C #, but it is much more troublesome to use in IOS.

The following sectionCodeIs a typical application:

Uialertview* Alert = [[Uialertview Alloc]Initwithtitle:@ "Hello" 

 Message:@ "IPad, I come"

Delegate:Self 

 Cancelbuttontitle:@ "OK" 

Otherbuttontitles:Nil];

[AlertShow];

[AlertRelease];

 

However, if it is more complex, it will be troublesome. if you add a few buttons above, for example:

 Uialertview* Alert = [[Uialertview Alloc]Initwithtitle:@ "Hello" 

 Message:@ "IPad, I come"

Delegate:Self 

 Cancelbuttontitle:@ "OK" 

Otherbuttontitles:@"Cancel", @ "Ignore", Nil];

 

Three buttons are displayed in the view. How do you know which button the user selects?

 

The procedure is as follows:

1. In the modify. h file, add the processing for alertview as follows:

@ InterfacePad4viewcontroller: uiviewcontroller

<Uialertviewdelegate>

{...

 

2. Add a response to the alertview event in the. M file as follows:

 

-(Void) Alertview :(Uialertview*) Alertview

Clickedbuttonatindex :(Nsinteger) Buttonindex {

Nslog(@ "% @", Alertview.Title);

}

The preceding method implements the Event Response of all the uialertviews in current. M,AlertviewSpecifies the view,ButtonindexSpecifies the button.