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Android Android Activity Lifecycle The Activity Lifecycle Saving and Retrieving Instance State

Posted by Alicia Beltran
Alicia Beltran
1,203 Points

./MainActivity.java:22: error: cannot find symbol

inSAveInstance(Bundle outState){ outState.putString(KEY_USERENTRY, mTextView.getText().toString()); }

MainActivity.java 
import android.content.Intent;
import android.view.View;

public class MainActivity extends Activity {

  public TextView mTextView;
  public String KEY_USERENTRY = "KEY_USERENTRY";
  public String mString ;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mTextView = (TextView) findViewById(R.id.textView);
    mString = "oli";
    mTextView.setText(mString);
  }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString(KEY_USERENTRY, mTextView.getText().toString());
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        mString = savedInstanceState.getString(KEY_USERENTRY);
        mTextView.setText(mString);
    }
}

1 Answer

Elias Svoba
Elias Svoba
14,347 Points
Elias Svoba
Elias Svoba
14,347 Points

Hey Ali,

You just need to correct these lines and you'll be able to complete the challenge:

Change public String KEY_USERENTRY = "KEY_USERENTRY"; to public static final String KEY_USERENTRY = "KEY_USERENTRY";

You don't really need these ones ([public String mString ;] , [mString = "oli";] and [mTextView.setText(mString)])

Change this line outState.putString(KEY_USERENTRY, mTextView.getText().toString()); so that it becomes:

@Override

protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putString(KEY_USERENTRY, 10);
}

Ultimately change mString = savedInstanceState.getString(KEY_USERENTRY); to have something like this:

 @Override

 protected void onRestoreInstanceState(Bundle savedInstanceState) {
     super.onRestoreInstanceState(savedInstanceState);
     mTextView.setText(savedInstanceState.getInt(KEY_USERENTRY) + " ");

}

Happy coding