How do I get extra data from intent on Android?

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How can I send data from one activity (intent) to another?

I use this code to send data:

Intent i=new Intent(context,SendMessage.class);
i.putExtra("id", user.getUserAccountId()+"");
i.putExtra("name", user.getUserFullName());
context.startActivity(i);

First, get the intent which has started your activity using the getIntent() method:

Intent intent = getIntent();

If your extra data is represented as strings, then you can use intent.getStringExtra(String name) method. In your case:

String id = intent.getStringExtra("id");
String name = intent.getStringExtra("name");

Intent.putextra – How to use Intents & Extras to pass data between , Intents in android offer this convenient way to pass data between activities using Extras. Creating multiple activities to display contents of same  Extra Data & Description; 1: EXTRA_ALARM_COUNT. Used as an int extra field in AlarmManager intents to tell the application being invoked how many pending alarms are being delievered with the intent. 2: EXTRA_ALLOW_MULTIPLE. Used to indicate that a ACTION_GET_CONTENT intent can allow the user to select and return multiple items. 3: EXTRA_ALLOW_REPLACE

In the receiving activity

Bundle extras = getIntent().getExtras(); 
String userName;

if (extras != null) {
    userName = extras.getString("name");
    // and get whatever type user account id is
}

Intent, extras -- This is a Bundle of any additional information. This can be used to provide extended information to the component. Retrieving data from intent. Once you start the activity, You’ll be able to get the data attached in the next activity [or services, broadcast receivers.. etc] being started. to retrieve the data, we use the method getExtra() on the NextActivity from the intent.

//  How to send value using intent from one class to another class
//  class A(which will send data)
    Intent theIntent = new Intent(this, B.class);
    theIntent.putExtra("name", john);
    startActivity(theIntent);
//  How to get these values in another class
//  Class B
    Intent i= getIntent();
    i.getStringExtra("name");
//  if you log here i than you will get the value of i i.e. john

Android Intents - Tutorial, Optionally an intent can also contain additional data based on an instance of the Bundle class  I show how to get the “extra” from an Activity or Fragment in this article on How to attach an extra to an Intent/PendingIntent in a Notification., but in short, the receiving Activity/Fragment can access the extra data like this:

Add-up
Set Data
String value = "Hello World!";
Intent intent = new Intent(getApplicationContext(), NewActivity.class);
intent.putExtra("sample_name", value);
startActivity(intent);
Get Data
String value;
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
    value = bundle.getString("sample_name");
}

Passing data between Activities using Intent in Android, In this tutorial, we will learn how to use Intent and then we will pass the data using Intent from one activity to another. Through Intent we can move from one  Intent.putExtra(name, value) //set the data intent.getIntExtra(name, defaultValue)//get data Related: Keep HashMap with object data while app is idle - Android android,android-activity I have a HashMap that contains data relevant to a specific Activity. The problem is that when the app is opened after being idle for some time, the HashMap is empty.

Instead of initializing another new Intent to receive the data, just do this:

String id = getIntent().getStringExtra("id");

android.content.Intent.getExtras java code examples, Intent mIntent = new Intent(this, Example.class); Bundle extras = mIntent.​getExtras(); For example an Activity can send an Intents to the Android system which starts another Activity. putExtra () adds extended data to the intent. It has two parameters, first one specifies the name which of the extra data,and the second parameter is the data itself.

How to Use getExtra and putExtra in Android for String Data, Device: Google Pixel - Android 7.1.1. When the app is running (Activity in foreground) I can read the extras from the intent, but as soon as the  You can get any type of extra datan from intent, no matter if it's an object or sting or anytype data. First, get the intent which has started your activity using the getIntent() method: If your extra data is represented as strings, then you can use intent.getStringExtra(String name) method.

Every time getting null data in extra intent · Issue #205 · firebase , Used as an int extra field in AlarmManager intents to tell the application being invoked how many pending alarms are being delievered with the intent. 2. Use getExtra and putExtra. You want to get some information like name, surname, email when user login on Android, and show on second activity these information , we can use getExtra and putExtra . Then we created new class under src folder and under the package name SecondActivity.java, and under the /res/layout/ folder created secondactivity.xml .

Android - Intent Standard Extra Data, in Android Studio, right click "app" at left: New -> Activity. – creates a new .XML file in res/ etc. to extract any data that was stored inside the intent. public class​  If you want your activity to receive implicit intents, it must include a category for "android.intent.category.DEFAULT" in its intent filters, as shown in the previous <intent-filter> example. Data test. To specify accepted intent data, an intent filter can declare zero or more <data> elements, as shown in the following example:

Comments
  • Java side note: It is never a good idea to "stringify" integer like that (especially for example purposes), and unfortunately it is frequently considered a good, quick way to convert int to string in java: user.getUserAccountId()+"", as this would create unnecessary objects to be collected. Consider using String.valueOf(user.getUserAccountId), or Integer.toString(user.getUserAccountId) instead.
  • @Andrew S Is this not the web? This is the number one result for "get data from intent"
  • @AndrewS I agree with McGuile. Also, this question was posted a while ago so the answer probably wasn't as easy to find back then. And if a similar question hadn't been posted to SO yet, then it was a valid post.
  • from where to can i all this method ??
  • @adham: If you are in an activity, from within onCreate, you call getIntent().getStringExtra("id"); to get the id string
  • You can get the intent which started your activity by calling getIntent() method. I've updated the answer.
  • @Eatlon If you have a problem with a specific library, you should create a separate question about that.
  • @MelColm what is the difference between getExtra().getString and getStringExtra()?
  • Why is this preferable over getStringExtra?
  • My guess is: if the extras can be null, the whole extras fetch can be skipped. By using getStringExtra, you basically change it to a series of if(extras != null) { return extras.getString(name) }. One for each getStringExtra you call. This option will check for null once and if so, it won't bother reading the Bundle at all. Besides that, getStringExtra will probably keep asking getExtras internally each time as well. So you simply have more calls to functions.
  • Also you could use getStringExtra("name") instead of getExtras().getString("name")
  • i had seen some of your answers about Vapor API.It's interesting.How do you get those data's (like Intent.getextras())??
  • Check out this, it explains how to retrieve Intent extras. More details are here. Does that help?
  • I think chaining methods has too much overhead. If you are calling any method that returns "this" just to be chainable (i.e. "setters") it's violating design principles of OOP. I like the simplicity, but debugging can possibly also a pain if you have a chain of methods. I see value in the API, I just don't agree with the method chaining.