How To Use The UIAlertView In IPad Or IPhone Application

Also as before, open the Assistant Editor and add an IBAction with the button by doing a control drag on the button for the header file. Open the Implementation file and make up a new UIAlertView object called: multibutton. However these times just initialize the thing using the init keyboard. Finally add the show solution to display the UIAlertView while using supplied parameters in the event the button is pressed. To act within the button that has been clicked you should implement the UIAlertViewDelegate and change the code this agreement button is pressed.

The alertView:clickedButtonAtIndex: returns the index on the button pressed and as well dismisses the UIAlertView. Once you have the index from the button pressed. Open the storyboard and add an UILabel for the Scene to show off information dependant on which button has pressed. To send the information for the label, you might to add an IBOutlet plus a delegate. So open the Assistant Editor and control drag a connection towards the header.

Once done, open the implementation file and implement the - (void)alertView:clickedButtonAtIndex technique to detect which button is pressed. This will tell the UIAlertView the view controller is its delegate. This kind of UIAlertView is fantastic for menus and the like. The UIAlertView provides properties to come up with, not merely buttons and text, but input fields likewise.

To abe able to provide an input field to a UIAlertview object, you will need to change the alertViewStyle property to UIAlertViewStylePlainTextInput. The TextField is provided at no cost when you simply select the style. To demonstrate this situation, we'll again replace the app. Control drag to produce an IBAction. Change the connection type to Action and naming the IBAction: NamePlease.

In the implementation technique of NamePlease, build a new UIALertView object, inputAlert. Add a message value like a prompt: “What Do I Call You! Add a button labelled, “OKAY! Figure 9 below has got the complete code in the NamePlease method. You can also copy the code from your Code section after this tutorial. Test the app inside Simulator.

The output should resemble Figure 10 below. The keyboard is provided permitting for input which is automatically dismissed in the event the UIAlertView is dismissed by pressing the “OKAY! ” button. This is handy for prompting the consumer for some kind of input. You could also add another button to allow anyone to eliminate gracefully.

Changing the form to UIAlertViewStyleSecureTextInput changes the input display to dots while permitting you to see the smoothness entered to get a second or two before converting the to a dot. We see this form of input in most system apps from Apple. To get value on the TextField inside UIAlertView, you'll have to add the textFieldAtIndex method towards the delegate method which return an instance from the UITextField.

See Figure 11 for code listing. Again to indicate, alter the sample app’s alertView to detect when the OKAY! Assign the value with the referenced UITextField within the label. This last example will demonstrate the UIAlertViewStyleLoginAndPasswordInput style. This style property displays two UITextField pre configured for the user name and password. Using the code technique from above, you can buy the UITextField values in the UITextField in UIAlertView and process a login to suit your needs. Created by Kevin Languedoc on 3/22/12. All rights reserved.

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