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Android Android Activity Lifecycle Introducing SharedPreferences Saving and Retrieving Data with SharedPreferences

task 2

task 2 don't know what is wrong

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

public class MainActivity extends Activity {
  private static final String PREFS_FILE = "com.packagename.preferences";
  private static final String KEY_CHECKBOX = "KEY_CHECKBOX";


  public CheckBox mCheckBox;

  private SharedPreferences mSharedPreferences;
  private SharedPreferences.Editor mEditor;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

   mSharedPreferences = getSharedPreferences(PREFS_FILE, Context.MODE_PRIVATE);


  }

}

1 Answer

Change private static final String PREFS_FILE = "com.packagename.preferences"; with private static final String PREFS_FILE = "";