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

Posted by Henry Kritikos
Henry Kritikos
Courses Plus Student 1,070 Points

I'd like to use the getIntExtra method but am unsure how to use it.

I haven't used this method before. Just not sure how to code it.

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.getIntExtra(FUEL_LEVEL, int defaultValue);

  }
}

1 Answer

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

The first argument is a String for the name or key for the value you gave when the putting the extra into the intent. According to the code challenge it should be "FUEL_LEVEL" with the quotemarks. The second argument is an int number or variable for the default value, which the challenge states should be -1. So the code should look like:

mFuelLevel = intent.getIntExtra("FUEL_LEVEL", -1);
Carl Sergile
Carl Sergile
16,570 Points
Carl Sergile
Carl Sergile
16,570 Points

Thanks for this answer, but I have a question.... In the video. the value type String was used in the name variable(String name =....) Why didnt you do?: int mFuelLevel = intent.getIntExtra("FUEL_LEVEL", -1);

Was because mFuelLevel is already mentioned or what?

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

The variable begins with an 'm' prefix which means it's a member variable that's declared further up in the code near the start. It's already declared as type int. In this challenge the extra is passing a number value, not a string value like in the prior video.