How to Pass Data Between Activity in Xamarin Android

Hello readers, Here I am going to show you how we can Pass Data Between Activity window in Xamarin Android.

How to Pass Data Between Activity Window in Xamarin Android?

This is a most common situation to pass data between application pages. In Web applications, we have different approaches like Query String, Sessions etc to Pass Data Between Activity pages. Here I am going to show you how to pass data between Xamarin Activity. Follow the steps.

Step 1- Open Visual Studio and create Blank App called PassingDataBetweenActivity as shown in below image.

Your solution explorer will look like this.

Step 2- Goto Solution Explorer>Resource>Layout>Main.xaml. Add a button to Layout. Here is the code for Main.xaml.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minWidth="25px"
android:minHeight="25px">
<Button
android:text="Goto Second Activity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btnGotoSecond" />
</LinearLayout>

Step 3- Add a listener for the button that we have added in Step 2. Goto Solution Explorer and open MainActivity.cs file and write the following code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;

namespace PassingDataBetweenActivity
{
[Activity(Label = "SecondActivity")]
public class SecondActivity : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.SecondLayout);
string sData = Intent.GetStringExtra("WelcomeText");
TextView lblWelcomeText = FindViewById<TextView>(Resource.Id.lblWelcomeText);
lblWelcomeText.Text = sData;
// Create your application here
}
}
}

Step 4- Now add another Activity called SecondActivity. For this Right Click on Solution Explorer and choose Add New Item.

Step 5- Goto Solution Explorer>Resource and right click on Layout folder and Add a new Layout called SecondLayout.

Step 6- Goto SecondLayout.axml file and write the following code.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minWidth="25px"
android:minHeight="25px">
<TextView
android:text="Text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/lblWelcomeText" />
</LinearLayout>

As you can see we have added a TextView that will show the data from MainActivity.

Step 7- Open SecondActivity.cs file and write the following code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;

namespace PassingDataBetweenActivity
{
[Activity(Label = "SecondActivity")]
public class SecondActivity : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.SecondLayout);
string sData = Intent.GetStringExtra("WelcomeText");
TextView lblWelcomeText = FindViewById<TextView>(Resource.Id.lblWelcomeText);
lblWelcomeText.Text = sData;
// Create your application here
}
}
}