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 trialTafadzwa Nyazorwe
17,053 PointsLet's practice saving and retrieving instance state. Start by initializing a key named KEY_USERENTRY.
im stuck, can you help
import android.content.Intent;
import android.view.View;
public class MainActivity extends Activity {
public TextView mTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTextView = (TextView) findViewById(R.id.textView);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
public static final String KEY_USERENTRY="KEY_USERENTRY";
}
}
2 Answers
alastair cooper
30,617 Pointsput this at the top of your MainActivity class...
private final String KEY_USERENTRY = "KEY_USER_ENTRY";
To initialise means to give a start value to something. The key is the name you will use to access the data you are saving. This will never change, so you can declare the key 'final'
Tafadzwa Nyazorwe
1,322 Pointsprivate static final String KEY_USERENTRY = "KEY_USER_ENTRY";
Tafadzwa Nyazorwe
17,053 PointsTafadzwa Nyazorwe
17,053 PointsThank you it worked
Lauren Moineau
9,483 PointsLauren Moineau
9,483 PointsAdding to Alastair Cooper's answer, on top of being
final
, as a constant, the key should also be defined asstatic
.Munashe Shava
6,789 PointsMunashe Shava
6,789 Pointsfg