private static @Nullable Boolean isHidden(final ApplicationInfo info) {
		final Integer private_flags = Hacks.ApplicationInfo_privateFlags.get(info);
		return private_flags != null ? (private_flags & PRIVATE_FLAG_HIDDEN) != 0 : null;
	}
@return hidden state, or null if failed to
mobile/src/main/java/com/oasisfeng/common/app/AppInfo.java