forked from extern/Unexpected-Keyboard
f4d88cc087
Among others: - Use `apply` instead of `commit` when saving shared preferences. - Avoid inlined Api - Remove unused resources
89 lines
2.9 KiB
Java
89 lines
2.9 KiB
Java
package juloo.keyboard2;
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import android.annotation.TargetApi;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.os.Build.VERSION;
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import android.preference.PreferenceManager;
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import java.util.Map;
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import java.util.Set;
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@TargetApi(24)
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public final class DirectBootAwarePreferences
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{
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/* On API >= 24, preferences are read from the device protected storage. This
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* storage is less protected than the default, no personnal or sensitive
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* information is stored there (only the keyboard settings). This storage is
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* accessible during boot and allow the keyboard to read its settings and
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* allow typing the storage password. */
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public static SharedPreferences get_shared_preferences(Context context)
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{
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if (VERSION.SDK_INT < 24)
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return PreferenceManager.getDefaultSharedPreferences(context);
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SharedPreferences prefs = get_protected_prefs(context);
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check_need_migration(context, prefs);
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return prefs;
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}
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/* Copy shared preferences to device protected storage. Not using
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* [Context.moveSharedPreferencesFrom] because the settings activity still
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* use [PreferenceActivity], which can't work on a non-default shared
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* preference file. */
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public static void copy_preferences_to_protected_storage(Context context,
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SharedPreferences src)
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{
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if (VERSION.SDK_INT >= 24)
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copy_shared_preferences(src, get_protected_prefs(context));
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}
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static SharedPreferences get_protected_prefs(Context context)
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{
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String pref_name =
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PreferenceManager.getDefaultSharedPreferencesName(context);
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return context.createDeviceProtectedStorageContext()
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.getSharedPreferences(pref_name, Context.MODE_PRIVATE);
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}
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static void check_need_migration(Context app_context,
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SharedPreferences protected_prefs)
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{
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if (!protected_prefs.getBoolean("need_migration", true))
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return;
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SharedPreferences prefs;
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try
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{
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prefs = PreferenceManager.getDefaultSharedPreferences(app_context);
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}
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catch (Exception e)
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{
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// Device is locked, migrate later.
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return;
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}
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prefs.edit().putBoolean("need_migration", false).apply();
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copy_shared_preferences(prefs, protected_prefs);
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}
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static void copy_shared_preferences(SharedPreferences src, SharedPreferences dst)
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{
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SharedPreferences.Editor e = dst.edit();
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Map<String, ?> entries = src.getAll();
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for (String k : entries.keySet())
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{
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Object v = entries.get(k);
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if (v instanceof Boolean)
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e.putBoolean(k, (Boolean)v);
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else if (v instanceof Float)
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e.putFloat(k, (Float)v);
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else if (v instanceof Integer)
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e.putInt(k, (Integer)v);
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else if (v instanceof Long)
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e.putLong(k, (Long)v);
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else if (v instanceof String)
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e.putString(k, (String)v);
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else if (v instanceof Set)
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e.putStringSet(k, (Set<String>)v);
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}
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e.apply();
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}
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}
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