Introduction
The KMMViewModelCoreObjc framework is a powerful tool that allows developers to create View Models in an Objective-C implementation of the Kotlin Multiplatform Mobile (KMM) framework. This framework enables code sharing between iOS and Android platforms in a seamless and efficient manner. With KMMViewModelCoreObjc, developers can easily manage the state and business logic of their UI components.
Features
- Native Objective-C implementation of View Models
- Integrates with the Kotlin Multiplatform Mobile framework
- Efficient state management for UI components
- Supports reactive programming with bindings
- Provides data synchronization between iOS and Android
Installation
1. Open your Xcode project and navigate to your project’s directory.
2. Create a Podfile
using the following command:
pod init
3. Open the Podfile
and add the following line:
pod 'KMMViewModelCoreObjc', '~> 1.0'
4. Save the Podfile
and run the following command:
pod install
5. Close Xcode and open the newly created workspace
file.
Usage
Creating a View Model
To create a new View Model, follow these steps:
- Create a new Objective-C class for your View Model.
- Inherit from the base class
KMMViewModel
. - Override the required methods and add your custom logic.
// MyViewModel.h
// Import the KMMViewModelCoreObjc header
#import <KMMViewModelCoreObjc/KMMViewModelCoreObjc.h>
@interface MyViewModel : KMMViewModel
// Add your properties and methods here
@end
// MyViewModel.m
@implementation MyViewModel
// Implement your custom logic here
@end
Binding Data
To bind data to your UI components, use the KMMViewModelBindable
protocol. Here’s an example:
// MyViewController.h
#import <UIKit/UIKit.h>
// Import the KMMViewModelBinders header
#import <KMMViewModelCoreObjc/KMMViewModelBinders.h>
NS_ASSUME_NONNULL_BEGIN
@interface MyViewController : UIViewController <KMMViewModelBindable>
// Connect your UI components with IBOutlet
@end
NS_ASSUME_NONNULL_END
// MyViewController.m
@implementation MyViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Bind your UI component to a property in the View Model
KMMViewModelBinding(MyViewModel, name, nameTextField.text);
// ...
// More bindings
}
@end
Synchronizing Data
To synchronize data between iOS and Android, use the KMMDataSync
class. Here’s an example:
#import <KMMViewModelCoreObjc/KMMViewModelCoreObjc.h>
// Create a shared instance of KMMDataSync
KMMDataSync *dataSync = [KMMDataSync shared];
// Enable synchronization for a specific data class
[dataSync enableDataSyncForClass:[MyDataClass class]];
// Perform synchronization
[dataSync synchronize];
// Use the synchronized data in your View Model
NSArray *syncedData = [dataSync getSyncedDataForClass:[MyDataClass class]];
Conclusion
The KMMViewModelCoreObjc framework provides a comprehensive solution for creating and managing View Models in an Objective-C implementation of the Kotlin Multiplatform Mobile framework. By utilizing this framework, developers can optimize code sharing, enhance state management, and synchronize data between iOS and Android platforms seamlessly.