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POHow to use SharedPreferences as LocalStore, in more generic way?
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copied!<p>Being new in Android world and advancing with joy day by day ;) I would like to share examples about common usage.</p> <p>Here comes example about using SharedPreferences with generic LocalStore class.</p> <p>create a common class to be used by your main activity or by any of sub-activity.</p> <pre><code> public class LocalStore { private static final String TAG = "LocalStore"; private static final String PREF_FILE_NAME = "userprefs"; public static void clear(Context context) { clear(context, "unknown"); } public static void clear(Context context, String caller) { Editor editor = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE).edit(); editor.clear(); editor.commit(); Log.d(TAG, "caller:"+caller + "|clear LocalStore"); } public static boolean setCustomBooleanData(String key, boolean value, Context context) { Editor editor = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE).edit(); editor.putBoolean(key, value); return editor.commit(); } public static boolean getCustomBooleanData(String key, Context context) { SharedPreferences savedSession = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE); return (savedSession.getBoolean(key, false)); } public static boolean setCustomStringData(String key, String value, Context context) { Editor editor = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE).edit(); editor.putString(key, value); return editor.commit(); } public static String getCustomStringData(String key, Context context) { SharedPreferences savedSession = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE); return (savedSession.getString(key, null)); } public static boolean isCustomStringExistInLocal(String customKey, Context context) { SharedPreferences savedSession = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE); return (savedSession.getString(customKey, null))==null?false:true; } public static boolean saveObject(String objKey, Serializable dataObj, Context context) { Editor editor = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE).edit(); editor.putString(objKey, ObjectSerializer.serialize(dataObj) ); Log.d(TAG, "savedObject| objKey:"+objKey+"/" + dataObj.toString()); return editor.commit(); } public static Object getObject(String objKey, Context context) { SharedPreferences savedSession = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE); Object dataObj = ObjectSerializer.deserialize(savedSession.getString(objKey, null)); return dataObj; } } </code></pre> <p>Note: You can use ObjectSerializer from <a href="http://github.com/apache/pig/blob/89c2e8e76c68d0d0abe6a36b4e08ddc56979796f/src/org/apache/pig/impl/util/ObjectSerializer.java" rel="nofollow">here</a> </p> <p>Enjoy!</p> <p>Additional update: I implemented a library to use MEMDISKCACHE and SHAREDPREF as GENERIC_STORE anyone interested can use it from<br> -> <a href="https://github.com/wareninja/generic-store-for-android" rel="nofollow">https://github.com/wareninja/generic-store-for-android</a></p>

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