Creating User Controls for iOS

To create a User Control for iOS you will have to take care of several things.

Implement the control in the Target Platform

• Create a Dynamic Library using the framework template.

Item User Controls

• Deploy your Base Class which will subclass the GXControlEditableWithLabelSingleEditorViewBase class.
• Create new properties and synthezise them.
• Implement the -newEditorViewWithFrame: method to render your desired User Control layout.
• Implement the GXControlEditableWithLabelSingleEditorViewBase abstract methods.
• Override the necessary GXControlWithLabelBase methods.

List User Controls

• Deploy your Base Class which will subclass the GXControlGridBase class. 
• Implement the -newGridViewWithFrame: method, which will be called by the base class when loading the view; you will have to render your desired User Control layout.
• Create a public method to return your view:

- (UIMyView *)myView {
    return (UIMyView *)[self gridView];
}

• Access the control properties defined implementing resolvers for each defined property. You can use helper methods such as the following:

- (NSString *)attributeName {
    return [ [self properties] getPropertyValueString:@"@MyUserControlNameAttributeName"];   
}

• Implement the -reloadData: method to load the User Control data from the GeneXus provider.
• Define the default action and other actions the user control should respond to.

Packaging

List and Item User Controls for Smar Devices implementations must be packaged as a Framework.

Control Definition in GeneXus

Follow the steps detailed in this article.

Execute GeneXus with the /install option and make sure it is available in a Smart Device object.

Deployment

• Copy the User Control folder and paste it on other GeneXus installations.

Samples

Follow this how to's

• Creating Item User Controls for iOS
• Creating List User Controls for iOS

Or check:

• Objective-C sample code on the Assembla site.
• Swift code sample on the article BlurredImage: sample User Control for iOS.