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13,934 PointsI have no clue how to solve this.. Lastly, retrieve the saved value in onCreate and set the state of the CheckBox. If t
Like I mentioned in the title, I have no idea how to solve this.
If anybody could explain it to me, i'd really appreciate it.
Thanks!
import android.view.View;
import android.os.Bundle;
public class MainActivity extends Activity {
private SharedPreferences mSharedPreferences;
private SharedPreferences.Editor mEditor;
private static final String PREFS_FILE = "PREFS_FILE";
private static final String KEY_CHECKBOX = "KEY_CHECKBOX";
public CheckBox mCheckBox;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSharedPreferences = getSharedPreferences(PREFS_FILE, Context.MODE_PRIVATE);
mEditor = mSharedPreferences.edit();
mCheckBox = (CheckBox) findViewById(R.id.checkBox);
Boolean mIsChecked = mSharedPreferences.getBoolean(KEY_CHECKBOX, false);
mCheckBox.setChecked(mIsChecked);
}
@Override
protected void onPause() {
super.onPause();
mEditor.putBoolean(KEY_CHECKBOX, mCheckBox.isChecked());
mEditor.apply();
}
}
2 Answers
Kourosh Raeen
23,733 PointsI just tried the code you've written and it passed the challenge. The way I had written the code for the last task was like this:
mCheckBox.setChecked(mSharedPreferences.getBoolean(KEY_CHECKBOX, false));
But As I said the way you wrote it works too.
Sai Iyengar
7,155 PointsI think you need to initialize the checkBox findViewById() before defining the SharedPreferences.
Kourosh Raeen
23,733 PointsThat order doesn't really matter as long as they are defined before you start using them.