The choice of the IDE is up to you and this section will walk you through using both the IDEs. Android Studio has a good editor, but Xcode has the ability to preview your SwiftUI Views for you. In this chapter, you can edit your Swift files in either Xcode or Android Studio. Xcode is Apple’s IDE for iOS, iPadOS, watchOS, macOS and tvOS development. If you don’t have Xcode, you can open any Swift files in Android Studio. If you’re not on a Mac, feel free to skip this chapter. This chapter assumes you’re working on a Mac with the Xcode app from Apple. Open the starter project from this chapter. This won’t be an extensive discussion on SwiftUI, but it will teach you the basics. SwiftUI is a declarative UI toolkit which works on iOS, macOS, watchOS and tvOS. In this chapter, you’ll learn about writing the UI for iOS with SwiftUI. You’ll need to use a different framework for each platform. 14.1 Migrating an existing feature to MultiplatformĪs you learned in the last chapter, KMP does not provide a framework for developing UI. 13.1 The need for structured concurrency.12.11 Challenge: Send your package name in a request header.12.1 The need for a common networking library.11.7 Serializing/deserializing new data.11.4 Adding serialization to your Gradle configuration.Section III: Kotlin Multiplatform: Advanced Section 3: 5 chapters 8.2 Writing tests for RemindersViewModel.TableviewFOO.ScrollToRow( path, UITableViewScrollPosition.Section II: Kotlin Multiplatform: Intermediate Section 2: 5 chapters Path = NSIndexPath.FromRowSection( path.Row + 1, 0 ) // +1 for the cell that might be completely visible Path = NSIndexPath.FromRowSection( 0, 0 ) Scrollpoint = new CGPoint( 5f, - ) // up a page Partial void buttonPreviousPageClick( NSObject sender ) TableviewFOO.ScrollToRow( path, UITableViewScrollPosition.Top, true ) Path = NSIndexPath.FromRowSection( tableviewFOO.NumberOfRowsInSection( 0 ) - 1, 0 ) Path = tableviewFOO.IndexPathForRowAtPoint( scrollpoint ) Scrollpoint = new CGPoint( 5f, + ) // down a page partial void buttonNextPageClick( NSObject sender ) No checks are done for very tall cells that might be larger than the table view's bounds. When paging up, the algorithm adds one row to the found item to try to show an item that is not straddling the table view's frame. When paging down, the next item that is found is scrolled to the top of the table view's frame. I added buttons that the user can tap to go to the next or previous page. I didn't like the scrolling when the UITableView's Paging was enabled so I wrote these two TouchUpInside methods (in C# for Xamarin) and left Paging on the table view disabled. You may want to check out this post ( UITableView w/ paging & momentum) in order to get a feel for how you'll need to tailor the target content offset recalculation method to fit your needs. Reset the targetContentOffset with your recalculated value Intercept and recalculate the desired content offsetĬGPoint targetOffset = TargetContentOffset:(inout CGPoint*)targetContentOffset (void)scrollViewWillEndDragging:(UIScrollView *)scrollView This method is called when a UIScrollView (or UITableView) begins to decelerate, and it allows us to specify where the UIScrollView should finish movement. Setting the pagingEnabled property of your UITableView to YES is always an option… However, default UIScrollView paging will automatically page in multiples of your UITableView's frame height (unlikely the same height of your UITableViewCells), so you'll probably need to implement scrollViewWillEndDragging:withVelocity:targetContentOffset.
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