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Apache License
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package com.beinggreenrobot.support.content.loaderasync; //from w w w . jav a 2s . co m import android.support.v4.content.AsyncTaskLoader; import android.annotation.TargetApi; import android.content.Context; import android.content.SharedPreferences; import android.os.Build; import android.preference.PreferenceManager; public class SharedPreferencesLoader extends AsyncTaskLoader<SharedPreferences> { private SharedPreferences prefs=null; @TargetApi(Build.VERSION_CODES.GINGERBREAD) public static void persist(final SharedPreferences.Editor editor) { if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.GINGERBREAD) { editor.apply(); } else { new Thread() { public void run() { editor.commit(); } }.start(); } } public SharedPreferencesLoader(Context context) { super(context); } /** * Runs on a worker thread, loading in our data. */ @Override public SharedPreferences loadInBackground() { prefs=PreferenceManager.getDefaultSharedPreferences(getContext()); return(prefs); } /** * Starts an asynchronous load of the list data. * When the result is ready the callbacks will be called * on the UI thread. If a previous load has been completed * and is still valid the result may be passed to the * callbacks immediately. * * Must be called from the UI thread. */ @Override protected void onStartLoading() { if (prefs!=null) { deliverResult(prefs); } if (takeContentChanged() || prefs==null) { forceLoad(); } } }