http://blog.csdn.net/huluboy/article/details/53397582
一般应用的SharePreference保存在/data/data/[package name]/shared_prefs目录,但通过createDeviceProtectedStorageContext建立的SharePreference是保存在/data/user_de/0/[package name]/shared_prefs目录。
当我们找不到SharePreference保存在哪,可以通过这个方法获取其路径
final File source = deviceContext.getSharedPreferencesPath(PreferenceManager.getDefaultSharedPreferencesName(deviceContext)); String absolutePath = source.getAbsolutePath();
使用例子是DeskClock
http://androidxref.com/7.1.1_r6/xref/packages/apps/DeskClock/src/com/android/deskclock/Utils.java
/** * Return the default shared preferences. */ public static SharedPreferences getDefaultSharedPreferences(Context context) { final Context storageContext; if (isNOrLater()) { / All N devices have split storage areas, but we may need to // migrate existing preferences into the new device protected // storage area, which is where our data lives from now on. final Context deviceContext = context.createDeviceProtectedStorageContext(); if (!deviceContext.moveSharedPreferencesFrom(context, PreferenceManager.getDefaultSharedPreferencesName(context))) { LogUtils.wtf("Failed to migrate shared preferences"); } storageContext = deviceContext; } else { storageContext = context; } return PreferenceManager.getDefaultSharedPreferences(storageContext); } }