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 Android Activity Lifecycle Introducing SharedPreferences Saving and Retrieving Data with SharedPreferences

Android Activity Lifecycle -checkbox? putBoolean? isChecked? isOverWhelmed(this.me)

Android Activity Lifecycle - Challenge Task 3 of 4

Override the onPause method. Then save the value of the CheckBox. Hint: Use isChecked() to get the value of the CheckBox, and use 'putBoolean' to store the value.


I passed tasks 1 & 2, and was able to add the override, but I have tried about 8 different things to add and save a checkbox... and am so tangled up in it now that I got a bad headace. I left a comment at the code that isn't passing.

import android.view.View;
import android.os.Bundle;

public class MainActivity extends Activity {

 private static final String PREFS_FILE ="com.teamtreehouse.sharedpreferencesapp.preferences";
private static final String KEY_CHECKBOX = "key_checkbox";
 private SharedPreferences mSharedPreferences;
    private SharedPreferences.Editor mEditor;
  public CheckBox mCheckBox;

  protected void onCreate(Bundle savedInstanceState) {

    mCheckBox = (CheckBox) findViewById(R.id.checkBox);
     mSharedPreferences = getSharedPreferences(PREFS_FILE, Context.MODE_PRIVATE);
        mEditor = mSharedPreferences.edit();
    protected void onPause() {
//I am lost around here
boolean checked = mCheckBox.isChecked();


2 Answers

Jacob Bergdahl
Jacob Bergdahl
29,118 Points

In mEditor.putBoolean("key_checkbox",true); you add true instead of the value checked. Try switching it to checked and see if it helps!

Thanks, that worked.

Ben Deitch
Ben Deitch
Treehouse Teacher

Also don't forget to call apply on the editor object to save your changes.


Thank you too. I actually had this in my answer at some point, but took it back out.