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How do I return data from activity?

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How do I return data from activity?

Main Activity

  1. Start the Second Activity with startActivityForResult , providing it an arbitrary result code.
  2. Override onActivityResult . This is called when the Second Activity finishes.
  3. Extract the data you got from the return Intent . The data is extracted using a key-value pair.

How do I get data from startActivityForResult?

SecondActivity class

  1. package com.javatpoint.startactivityforresult;
  2. import android.os.Bundle;
  3. import android.app.Activity;
  4. import android.content.Intent;
  5. import android.view.Menu;
  6. import android.view.View;
  7. import android.view.View.OnClickListener;
  8. import android.widget.Button;

What is return type of start activity for result android?

What are return types of startActivityForResult in android Options 1 RESULT OK 2 RESULT CANCEL 3 RESULT CRASH 4 A.

How can I get my onActivityResult results?

How to check the result from the main activity? You need to override Activity. onActivityResult() and then check its parameters: requestCode identifies which app returned these results.

How do I go back from one Android activity to another?

Android activities are stored in the activity stack. Going back to a previous activity could mean two things. You opened the new activity from another activity with startActivityForResult. In that case you can just call the finishActivity() function from your code and it’ll take you back to the previous activity.

How pass data from activity to service in Android?

Android provides a way to pass values between activity and sub-activities and services and each others, using the getExtras(). putExtra method, which takes the key name (string) and its value. This passed value can be recovered when the intent is handled (being it service or activity).

What is startActivity ()?

The Class parameter of the app component, to which the system delivers the Intent, is, in this case, the activity to start. The startActivity() method starts an instance of the DisplayMessageActivity that’s specified by the Intent .

What is the result of an activity?

You can also start another activity and receive a result back. For example, your app can start a camera app and receive the captured photo as a result. The Activity Result APIs provide components for registering for a result, launching the result, and handling the result once it is dispatched by the system.

How do you set activity results?

Its a simple as that:

  1. Create an Intent (the result object)
  2. Set the result data (you don’t have to return a Uri – you can use the putExtra methods to set any values you want)
  3. Call setResult on your Activity, giving it the result Intent.
  4. Call finish on your Activity.

How do you get a response from an activity in Android?

2 Answers. You must call the second activity using the startActivityForResult method. In your second activity, when it is finished, you can execute the setResult method where basically you put the result information. Then, on your first activity, you override the onActivityResult method.

What is the life cycle of Android activity?

Android Activity Lifecycle methods

Method Description
onCreate called when activity is first created.
onStart called when activity is becoming visible to the user.
onResume called when activity will start interacting with the user.
onPause called when activity is not visible to the user.

How do I stop Android from going back to previous activity?

If you would like to simply prevent the back button to navigate back to your login Activity , you could just set the android:noHistory attribute to true for your login Activity in your Manifest.

How to use onactivityresult in Android Stack Overflow?

When you done with the subsequent activity and returns, the system calls your activity’s onActivityResult () method. This method includes three arguments: @The request code you passed to startActivityForResult () .

Why are data and bundle in onactivityresult null?

But data, and bundle, are null. When i debug the code, i see that in class B, intent has the Extras, but then, when i call finish () and return to class A, this intent is not reachable. How can i solve this problem?

What is the on activity result method in Android?

On Activity Result (Int32, Result, Intent) Method Android. App Called when an activity you launched exits, giving you the requestCode you started it with, the resultCode it returned, and any additional data from it. The integer request code originally supplied to startActivityForResult (), allowing you to identify who this result came from.

When do you call onactivityresult ( Int32, result, intent )?

Called when an activity you launched exits, giving you the requestCode you started it with, the resultCode it returned, and any additional data from it. The integer request code originally supplied to startActivityForResult (), allowing you to identify who this result came from.