CODEWITHSUNDEEP
androidandroid-preferences
void
void

Reputation: 36703

SharedPreference in non-activity class

I have a class PreferenceClass which extends PreferenceActivity. The code for this class is as follows:

public class Preferenceclass extends PreferenceActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // setContentView(R.layout.main2);
    addPreferencesFromResource(R.layout.preferences);

}}

I also have a non activity class Shakelistener which implements SensorListener. The code for this class is as follows:

    public class Shakelistener implements SensorListener {
    public void onSensorChanged(int sensor, float[] values) {
    // Some code
    }}

I need to be able to access the preferences from in this non-activity class, but I'm not sure how to do this.

EDIT

This is the code I use to access the shared preferences:

    String PREF_FILE_NAME = "preferences";

    SharedPreferences pref = mContext.getSharedPreferences(PREF_FILE_NAME , Context.MODE_PRIVATE);
    String myListPreference = pref.getString("listpref", "default choice");
    boolean cb = pref.getBoolean("checkBox", false);
    Toast.makeText(mContext, myListPreference+"-"+cb, Toast.LENGTH_LONG).show();

This code is giving no errors, but it always evaluates the toast to "default choice-false".

Which PREF_FILE_NAME should I be using in this case?

Upvotes: 1

Views: 2022

Answers (1)

Raghav Sood
Raghav Sood

Reputation: 82533

Take an instance of Context in the constructor of your non-activity class and use that to call all such methods.

Something like this:

public class NonActivityClass implements SensorListener{
Context mContext;
public NonActivtiyClass(Context context) {
this.mContext = context;
}
//Rest of your code
}

Then do this to create an object of that class in your Activtiy's onCreate():

NonActivityClass nac = new NonActivityClass(this);

Upvotes: 2

Related Questions