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

shared preferences

HOw do you initialise shared preferences in OnCreate?

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

public class MainActivity extends Activity {
  public static final String PREFS_FILE = preferences;
  public static final String KEY_CHECKBOX = key_checkbox;
  private SharedPreferences.Editor mEditor;
  private SharedPreferences mSharedPreferences;
  public CheckBox mCheckBox;

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

    mCheckBox = (CheckBox) findViewById(R.id.checkBox);
    mSharedPreferences = getSharedPreferences(PREFS_FILE, Context.MODE_PRIVATE);
    mEditor = mSharedPreferences.edit();
  }
}
gnstudenko
gnstudenko
2,848 Points

Hi Malcolm I would normally initialize it like this:

    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);