Question

What I’m trying to do

---

Hello Guys.

I got a Service which, set’s a boolean to true or to false whenever the service is started or stopped (started = true / stopped = false) in the SharedPreference. Now when I try to get the Boolean out there in my Activity, it allways dosn’t find it. How can I solve this… Here’s the Code for you Guys.

Code

---

Methode in my Service:

private void setStarted(boolean started) {
    // SharedPreferences casten

    mPrefs = this.getSharedPreferences(LOG_TAG, MODE_PRIVATE);
    // Boolean in SharedPreferences hinzufügen
    SharedPreferences.Editor editor = mPrefs.edit();
    editor.clear().apply();
    editor.putBoolean(PREF_STARTED, started).commit();
    editor.commit();

    //mPrefs.edit().putBoolean(PREF_STARTED, started).commit();

    Log.d(LOG_TAG, "Variabel " + mPrefs.getBoolean(PREF_STARTED, false));
}

In my Activity

// mPrefs caten
        mPrefs = this.getSharedPreferences(GPSService.LOG_TAG, MODE_PRIVATE);

        // boolean holen ob service gestartet oder nicht
        run = mPrefs.getBoolean(GPSService.PREF_STARTED, false);

How do I get the boolean out of there? It allways returns me the default value I had to give in the getBoolean Methode.

Thanks for your help in advance

safari

Answer 1

Here is some code that I’m successfully using in one of my apps. It is used in various parts of the app, e.g. both from activities and services:

void putValue(Context context, String pref, boolean value) {
    SharedPreferences settings = context.getSharedPreferences(PREFS_NAME, Activity.MODE_PRIVATE);
    SharedPreferences.Editor editor = settings.edit();
    editor.putBoolean(pref, value);
    editor.commit();                
}

boolean getValue(Context context, String value, boolean defaultValue) {
    SharedPreferences settings = context.getSharedPreferences(PREFS_NAME, Activity.MODE_PRIVATE);
    return settings.getBoolean(value, defaultValue);
}