Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Build an Interactive Story App (Retired) Intents and Multiple Activities Getting Data from an Intent

Posted by Amon Dow III
Amon Dow III
4,086 Points

I do not understand why it is not working

This is the assignment

We previously added a FUEL_LEVEL to our spacecraft. Now in FlightActivity, we want to get the value that we put in the Intent. Start by declaring an Intent variable and getting the Intent used to start this Activity.

FlightActivity.java 
import android.os.Bundle;

public class FlightActivity extends Activity {

  public int mFuelLevel = 0;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_flight);

    // Add your code below!
    Intent intent = getIntent ();
    String mFuelLevel= intent.getStringExtra("FUEL_LEVEL");
  }
}

2 Answers

Andrew Winkler
Andrew Winkler
37,739 Points
Andrew Winkler
Andrew Winkler
37,739 Points

For Task 1, all you need to do is get the intent, so underneath "//Add your code below!" write:

Intent intent = getIntent();

For Task 2, you need to: 1) set mFuelLevel to the value from the Intent and 2) Use "FUEL_LEVEL" as the key and -1 as the default value

..so checking the intent documentation, and scrolling to int, you'll find:

getIntExtra(String name, int defaultValue) Retrieve extended data from the intent.

Therefore, your code should be:

mFuelLevel = intent.getIntExtra("FUEL_LEVEL", -1);
Ratul Sarna
PLUS
Ratul Sarna
Courses Plus Student 11,618 Points
Ratul Sarna
Ratul Sarna
Courses Plus Student 11,618 Points

Instead of 

String mFuelLevel= intent.getStringExtra("FUEL_LEVEL");

it should be

mFuelLevel = intent.getIntExtra("FUEL_LEVEL");

because the member variable mFuelLevel is declared as an int. So it should be assigned an int and should not be declared again in onCreate method.

Helena Filmalter
Helena Filmalter
896 Points
Helena Filmalter
Helena Filmalter
896 Points

I tried this, but it did not work. Any other suggestions?