One activity to another activity in kotlin

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One activity to another activity in kotlin

In this tutorial, we will learn how to jump from one activity to another activity in kotlin. This is the main activity we have made and there is three more activity we have created.

We will use Intent. It can be used with startActivity to launch an Activity. Below is a complete tutorial of how to jump from one activity to another activity in kotlin. If you have any confusion or need help then ask questions through the comment section we will help you out.

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Home Tutorials How to jump from one activity to another activity in Kotlin. How to jump from one activity to another activity in Kotlin. By Aditya Singh. June 30, Intent import android. Image import android. AppCompatActivity import android. Bundle import android. Button import android. Tags Android Tutorials. Previous article How to know who deleted you from friend list in Facebook? Next article Everything about Android Latest Version.

How to jump from one activity to another activity in Kotlin

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Last September, Google announced that Inbox will be shutting down in March Now Google started showing a pop-up to the Inbox users and Gmail update lets you customize swipe actions News Aditya Singh - March 20, Now you can customize the swipe action and you can set your own action. You need toThe important announcement by Google in for Android Developers is that kotlin is now an official language for Android App Development.

So, being an android developer you must have sent data between two activities but in kotlin the syntax's are different. Let's see an example of two activities, in the first one, Data is sent to another activity and in next one Data is received:. In above code, you can see the kotlin syntax, we are sending user input to the another activity through intent.

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one activity to another activity in kotlin

Most Viewed Most Recent Your account has been flagged due to frequent spamming, you are not permitted to post comments. Contact admin findnerd. Negative Vote. Save Favourite. Intent import android. Bundle import android.

How to start one activity from another in android using Intent?

AppCompatActivity import android. Button import android. EditText import com. R import com. Activity 2: Receiving Data package com. TextView import com. Tags kotlin tutorial passing data in kotlin Android kotlin. Comment on it. Unable to start Java!! Nerd figure out why We have detected you are using Google Chrome and might be unable to use the Java plugin from this browser.

Starting with Version 42 released AprilChrome has disabled the standard way in which browsers support plugins. More info. Nerd figure out why. Unfortunately some of our below listed tools require Java plugin: Desktop recorder.In this tutorial, we will learn how to use Intent and then we will pass the data using Intent from one activity to another.

What is Intent?? Through Intent we can move from one activity to another activity and Intent can also be used to pass the data from one activity to another activity. In the previous article, we designed the Login Page and now we will learn how to use Intent to pass data from LoginActivity to the next activity.

Step Lets initialize them in our LoginActivity. EditText edittextfullname,edittextusername; : This is the way to define the views which we have used in the layout and you can give any name you want.

Here we have given edittextfullname and edittextusername. Button loginbutton; : Here we have defined a button with name loginbutton. LoginButton ;: This line does the same thing as edittextfullname and edittextusername does. Step 2 :. Whats Next??? Name the new activity as SecondActivity. Now you have created two Activities. With the help of Intent,we will go from one activity to another activity LoginActivity to SecondActivity. Now its time to use Intent but first we have to learn setOnClickListener.

When we press the button, setOnClickListener will be called and inside setOnClickListenerwe will write code to open new activity and we can do this with the help of Intent.

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OnClickListener from the pop-up. It will look like the image below. Step 4 :. If we have to open one activity from another activity we have to add an Intent code in onClick View view method as shown below. This is the method to use Intent. Source: It means the current activity in which you are present.

Destination: It means the activity where you have to go. The below code adds into the onClick method. When you press Login Button it will successfully open the SecondActivity. How we pass data through Intent? To pass the data through Intent we will use putExtra method and in parameter, we will use Key-Value Pair. Now, where we have to mention putExtra method? We have to add putExtra method in onClick as shown in the below code and in parameter we have to mention key and its value.

Where does the data come from? It comes from edittextfullname when the user enters any name in EditTexts it is stored in edittextfullname using the below code. As you can see that we have made a variable of fullName and it's of String data type. Add the below code in onClick method. So, the onClick will be as shown below:.

Now open the SecondActivity. Have a look at the below code.When you complete the previous lessonyou have an app that shows an activity that consists of a single screen with a text field and a Send button. In this lesson, you add some code to the MainActivity that starts a new activity to display a message when the user taps the Send button.

Follow these steps to add a method to the MainActivity class that's called when the Send button is tapped:. You might see an error because Android Studio cannot resolve the View class used as the method argument. If a menu appears, select Import class. Now when the button is tapped, the system calls the sendMessage method. Take note of the details in this method. They're required for the system to recognize the method as compatible with the android:onClick attribute.

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Specifically, the method has the following characteristics:. An Intent is an object that provides runtime binding between separate components, such as two activities. You can use intents for a wide variety of tasks, but in this lesson, your intent starts another activity. Expect Android Studio to encounter Cannot resolve symbol errors again.

Your should end up with the following imports:.

one activity to another activity in kotlin

An error still remains for DisplayMessageActivitybut that's okay. You fix it in the next section. The Intent constructor takes two parameters, a Context and a Class.

The Context parameter is used first because the Activity class is a subclass of Context. The Class parameter of the app component, to which the system delivers the Intentis, in this case, the activity to start. The putExtra method adds the value of EditText to the intent. An Intent can carry data types as key-value pairs called extras. It's a good practice to define keys for intent extras with your app's package name as a prefix. This ensures that the keys are unique, in case your app interacts with other apps.

If you run the app and tap the button on the first activity, the second activity starts but is empty. This is because the second activity uses the empty layout provided by the template.

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The new activity includes a blank layout file. Follow these steps to add a text view to where the message appears:. Optionally, you can make some adjustments to the text style if you expand textAppearance in the Common Attributes panel of the Attributes window, and change attributes such as textSize and textColor. In this step, you modify the second activity to display the message that was passed by the first activity.

In DisplayMessageActivityadd the following code to the onCreate method:. Each screen in your app that's not the main entry point, which are all the screens that aren't the home screen, must provide navigation that directs the user to the logical parent screen in the app's hierarchy.

To do this, add an Up button in the app bar. To add an Up button, you need to declare which activity is the logical parent in the AndroidManifest. Click Apply Changes in the toolbar to run the app.

When it opens, type a message in the text field and tap Send to see the message appear in the second activity. To continue to learn the basics about Android app development, go back to Build your first app and follow the other links provided there. Content and code samples on this page are subject to the licenses described in the Content License.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. As I'm learning Kotlin for Android development, I'm now trying the basic programs like hello world and how to navigate from one activity to another activitythere is no issue in this. My concern is when I move from one activity to another activity it works fine but I do not know how to pass the values between the activities.

This is my main activity where I take the username and password from edit text and setting to the intent:. Please guide me how to do this, whether if I have some other way to do this in Kotlin if not by intent. In Kotlin, you can pass the data simply by using the Intents. You can directly put your data in intent or you can write those data in bundle and send that bundle to another activity using the intent.

You can just access the value without using extras or intent. Simply use companion object in MainActivity:. Learn more. How to pass the values from activity to another activity in kotlin Ask Question. Asked 2 years, 8 months ago. Active 2 months ago. Viewed 37k times. I tired to set the values in one activity and retrieved in another activity it does not work.

Djensen 1, 1 1 gold badge 17 17 silver badges 26 26 bronze badges. Jeyaseelan Jeyaseelan 1 1 gold badge 2 2 silver badges 12 12 bronze badges. Active Oldest Votes. Sudip Sadhukhan Sudip Sadhukhan 5 5 silver badges 14 14 bronze badges. I'm on mobile, you must test by yourself. Jeyaseelan Not at all.

Switching between Activities along with data using Kotlin

You can simply use the intents and bundle to send data from one activity to another activity. Dev17 Android.

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Dev17 59 3 3 bronze badges. Muhammed Haris Muhammed Haris 1 1 silver badge 12 12 bronze badges. Love kothari Love kothari 17 1 1 silver badge 3 3 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.Today we are going to learn about Android Intents.

one activity to another activity in kotlin

Just imagine if you want to start one screen from another screen then you have to use Intent. Even if you want to pass some data from one activity to another then also Intent is helpful. So the first question in your mind will be. An intent is an abstract description of an operation to be performed. Explicit intent is used to connect the internal world of application, Suppose you want to connect one activity to another we can do this by Explicit Intent.

Implicit intents are often used to activate components in other applications. For example:. In the below example, I want to start DisplayActivity from MainActivity when the user press the submit button.

I want to pass a movie name and movie description from MainActivity to DisplayActivity. We can pass data with intent using putExtra method or with Bundle. For example. Here as you can see I have added movie name and movie description using putExtra string method. It is always good practice to check if intent contains any data or not you can check this using if getIntent. You can retrieve data from Intent using the following methods. Those are some common methods you can check all other methods on Android official site.

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one activity to another activity in kotlin

Subscribe Now. Trending News. Blog Post. Lokesh Desai4 months ago 0 4 min read So the first question in your mind will be What is Android Intent? What are the types of Intent? Explicit Intent: Explicit intent is used to connect the internal world of application, Suppose you want to connect one activity to another we can do this by Explicit Intent. How to start one Activity from another Activity? For example, DisplayActivity. Different forms of putExtra method.

Source Code Github project for Intent Demo. Tags beginner. I am Kotlin Lover. Kotlin made me more productive in terms of coding. Do you want me to code for you? Please don't hesitate to contact me. Related posts. Kotlin variable declaration, conditional statement and looping Lokesh Desai2 years ago 4 min read. Quick Cook! Lokesh Desai4 months ago 0.Update Note : This tutorial has been updated to Kotlin 1. The previous update was made by Joe Howard and the original tutorial was written by Namrata Bandekar.

Note : The sample code for this tutorial has been updated to be compatible with Android Studio 3. Just kidding. Actually, the first thing you do is create an Activity. Activities are where all the action happens, because they are the screens that allow the user to interact with your app. Download the starter project using the Download materials button at the top or bottom of the tutorial. Open Android Studio 3. Then select the project you just extracted. Your subject and new best friend for the rest of the tutorial is Forget Me Notwhich is a simple app that lets you add and delete tasks from a list.

Your mission is to liven up this screen by making the to-do list modifiable. As mentioned earlier, activities are the foundations upon which you build screens for your app. Having all these activities doing different things makes it sound like developing an Android app is a complicated undertaking. This system is known as the activity lifecycle.

Handling the various lifecycle stages of your activities is crucial to creating a robust and reliable app. The lifecycle of an activity is best illustrated as a step pyramid of different stages linked by the core callback methods:. Following the diagram above, you can picture the lifecycle in action as it courses through your code. Take a closer look at each of the callbacks:. Note : You do not call any of the above callback methods directly in your own code other than superclass invocations — you only override them as needed in your activity subclasses.

They are called by the OS when a user opens, hides or exits the activity. So many methods to remember! Keeping the activity lifecycle in mind, take a look at an activity in the sample project. Open MainActivity. For larger data sets than you would encounter in this example, a RecyclerView and RecyclerView.

ViewHolder would be recommended. See the RecyclerView docs for more information. Note : There will be a compile error since you have yet to define TaskDescriptionActivity. You can start an activity with either startActivity or startActivityForResult. Note : Intents are used to start activities and pass data between them. For more information, check out the Android: Intents Tutorial. Android Studio makes it very easy to create an activity. Just right-click on the package where you want to add the activity — in this case, the package is com.

On the next screen, enter TaskDescriptionActivity as the Activity Name and Android Studio will automatically fill the other fields based on that.


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