Java Code Examples for androidx.core.content.ContextCompat#createDeviceProtectedStorageContext()

/**
 * Gets a {@link SharedPreferences} instance that preferences managed by this will
 * use.
 *
 * @return a {@link SharedPreferences} instance pointing to the file that contain the values of
 * preferences that are managed by this PreferenceManager. If
 * a {@link PreferenceDataStore} has been set, this method returns {@code null}.
 */
public SharedPreferences getSharedPreferences() {
    if (getPreferenceDataStore() != null) {
        return null;
    }

    if (mSharedPreferences == null) {
        final Context storageContext;
        switch (mStorage) {
            case STORAGE_DEVICE_PROTECTED:
                storageContext = ContextCompat.createDeviceProtectedStorageContext(mContext);
                break;
            default:
                storageContext = mContext;
                break;
        }

        mSharedPreferences = storageContext.getSharedPreferences(mSharedPreferencesName,
                mSharedPreferencesMode);
    }

    return mSharedPreferences;
}
 

private PrefFileManager(Context context)
{
    mContext = Build.VERSION.SDK_INT >= 24 && !ContextCompat.isDeviceProtectedStorage(context)
            ? ContextCompat.createDeviceProtectedStorageContext(context) : context;

    mFileObserver = new FileObserver(mContext.getFilesDir().getParentFile() + "/shared_prefs", FileObserver.ATTRIB)
    {
        @Override
        public void onEvent(int event, String path)
        {
            if ((event & FileObserver.ATTRIB) != 0)
                onFileAttributesChanged(path);
        }
    };
    mFileObserver.startWatching();
}
 

@Override
public void onCreate(@Nullable Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

    Bundle args = getArguments();
    appName = args.getString("appName");
    pkgName = args.getString("pkgName");
    adNetworks = args.getString("adNetworks");
    blockNum = args.getInt("blockNum");

    Context ctx = ContextCompat.createDeviceProtectedStorageContext(getActivity());
    if (ctx == null) ctx = getActivity();

    mPref = ctx.getSharedPreferences(Common.MOD_PREFS, Context.MODE_PRIVATE);
}
 

public AppsAdapter(Context context, ArrayList<AppDetails> list, MainFragment.FragmentMode mode)
{
    super();
    mContext = context;
    appList = list;

    Context ctx = ContextCompat.createDeviceProtectedStorageContext(context);
    if (ctx == null) ctx = context;

    mPref = ctx.getSharedPreferences(Common.MOD_PREFS, Context.MODE_PRIVATE);

    helper = new DaoMaster.DevOpenHelper(context, "mmg", null);
    db = helper.getWritableDatabase();
    daoMaster = new DaoMaster(db);
    daoSession = daoMaster.newSession();
    appDataDao = daoSession.getAppDataDao();

    mMode = mode;

    mAppDataMap = new HashMap<>();
}
 

/**
 * Gets the appropriate SharedPreferences depending on the device capabilities. On systems that
 * support device-protected storage (Android N or later with compatible device), returns
 * SharedPreferences backed by device-protected storage. Otherwise, returns SharedPreferences
 * backed by a standard credential-protected storage context.
 */
public static SharedPreferences getSharedPreferences(Context context) {
  Context deContext = ContextCompat.createDeviceProtectedStorageContext(context);
  if (deContext != null) {
    return PreferenceManager.getDefaultSharedPreferences(deContext);
  } else {
    return PreferenceManager.getDefaultSharedPreferences(context);
  }
}
 

/**
 * Move existing preferences file from credential protected storage to device protected storage.
 * This is used to migrate data between storage locations after an Android upgrade from
 * Build.VERSION < N to Build.VERSION >= N.
 */
public static void migrateSharedPreferences(Context context) {
  if (BuildVersionUtils.isAtLeastN()) {
    Context deContext = ContextCompat.createDeviceProtectedStorageContext(context);
    deContext.moveSharedPreferencesFrom(
        context, PreferenceManager.getDefaultSharedPreferencesName(context));
  }
}
 

private OutputStream getOutputStream() {
  try {
    Context context = getContext();
    // Support for directBootMode
    if (Build.VERSION.SDK_INT >= 24) {
      context = ContextCompat.createDeviceProtectedStorageContext(context);
    }
    return context.openFileOutput(getOutputFile(), 0);
  } catch (FileNotFoundException e) {
    throw new RuntimeException("Could not open stream for output");
  }
}
 

private static Context directBootSafe(Context applicationContext) {
  if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
    return applicationContext;
  }
  return ContextCompat.createDeviceProtectedStorageContext(applicationContext);
}