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Start your free trialMalcolm Mutambanengwe
4,205 PointsAndroid activity lifecycle TextView. I cannot see which text or string needs to be restored.
KEY_USERKEY must have both String and int values. I can't see the String value Steve Hunter
import android.content.Intent;
import android.view.View;
public class MainActivity extends Activity {
public static final String KEY_USERENTRY = "KEY_USERKEY";
public TextView mTextView;
private int x = 10;
@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);
outState.putInt(KEY_USERENTRY, 10);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
mTextView = savedInstanceState.getString();
}
}
1 Answer
Steve Hunter
57,712 PointsHi Mal,
In onRestoreInstanceState
, call getInt()
on the parameter being received, savedInstanceState
, and pass in the constant that you defined in the first part of the challenge. This key is associated with the value from onSaveInstanceState
that you set earlier - 10. Note, my constant is called something different to yours, so change that to fit.
This will return an int
, 10
. We want to use this to be the value held by mTextView
which we will set using setText()
. That is expecting a String
as a parameter, not an int
. Use a moosh to perform the type cast. All that looks like:
mTextView.setText(savedInstanceState.getInt(KEY_USERENTRY) + "");
I hope that helps,
Steve.