Convert to Grid

Convert the Grid design to iOS/Android code.

Grid to Swift/Android code

If you need to display scrolling elements dynamically, you should check if they are lists or grids. You can find how to understand the difference here. If you have decided that you want to create Grids, this is right please to read.

An example of a grid is below. In the image, the cell prototype repeats itself with different data inside.

Grids have different names in iOS and Android. Grids are explained below with the code and details.

Generated code for iOS/Android and Details

iOS

CollectionView (Horizontal / Vertical)

A grid is called CollectionView in Swift language.

A CollectionView object is responsible for managing an ordered collection of data items and presenting them in customizable layouts.

It has two directions as Vertical and Horizontal. You can select the one that fits your case. In the case below, you can see the CollectionView-Vertical and its generated code.

ProfilePage.swift

import UIKit

class ProfilePage: UIViewController {
	
//Connection from an Interface Builder to a UI component
@IBOutlet private weak var userPhotosCollectionView: UICollectionView!

		override func viewDidLoad() {
			super.viewDidLoad()
			setupViews()
	}

	private func setupViews() {
		userPhotosCollectionView.backgroundColor = UIColor.clear
		self.userPhotosCollectionView.dataSource = self
		}
}

// MARK: - Collection View DataSource

extension ProfilePage: UICollectionViewDataSource {
	func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int{
		return 10
	}

	func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell{
        
		let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "PictureCollectionViewCell", for: indexPath) as! PictureCollectionViewCell
		return cell
	}
}

The cell is defined in a separate file.

PictureCollectionViewCell.swift

import UIKit

class PictureCollectionViewCell: UICollectionViewCell {
	
	// MARK: - Properties

	@IBOutlet private weak var pic03ImageView: UIImageView!

    
	override init(frame: CGRect) {
		super.init(frame: frame)
		self.setupViews()
	}

	required init?(coder aDecoder: NSCoder) {
		super.init(coder: aDecoder)
	}

	func setupViews() {
		//The properties of the code are defined in Storyboard. 
	}
}

Android

RecyclerView-GridLayoutManager

GridLayoutManager is the RecyclerView.LayoutManager implementation that shows items in a grid. It is responsible for managing an ordered collection of data items and presenting them in customizable layouts.

It has two directions as Vertical and Horizontal. You can select the one that fits your case. In the case below, you can see the GridLayoutManager-Vertical and its generated code.

Let's see the generated code for GridLayoutManager.

<!--activityProfilePage.xml-->
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/userPicturesRecyclerView"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@drawable/userpicturesrecyclerview_background_drawable"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
tools:listitem="@layout/layout_user_picture_card_view"
app:spanCount="3"
android:orientation="vertical"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:layout_marginBottom="1dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/photosTextView"
app:layout_constraintBottom_toTopOf="@+id/profileIconImageView"/>

The card is defined in a separate file.

<!--layoutUserPictureCardView.xml-->
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
	
<ImageView
android:id="@+id/pic03ImageView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:src="@drawable/pic04"
android:scaleType="centerCrop"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
	
</androidx.constraintlayout.widget.ConstraintLayout>