安卓系统 图库无法打开文件

安卓系统 图库无法打开文件

在android12系统中发现的问题，开机后图库无法正常使用，需要到settings下手动打开图库的权限后才能访问文件；

解决方法：

frameworks/base/services/core/java/com/android/server/pm/permission/DefaultPermissionGrantPolicy.java    

如下，在grantDefaultSystemHandlerPermissions方法中，添加图库默认权限：

        String[] calendarSyncAdapterPackages = (syncAdapterPackagesProvider != null) ?Packages(CalendarContract.AUTHORITY, userId) : null;final String galleryPackageName = "com.android.gallery3d";PackageInfo pkg = pm.getSystemPackageInfo(galleryPackageName);if (pkg != null&& doesPackageSupportRuntimePermissions(pkg)) {grantRuntimePermissions(pm,pkg, STORAGE_PERMISSIONS, true, userId);grantRuntimePermissions(pm,pkg, MICROPHONE_PERMISSIONS, true, userId);grantRuntimePermissions(pm,pkg, ALWAYS_LOCATION_PERMISSIONS, true, userId);grantRuntimePermissions(pm,pkg, CONTACTS_PERMISSIONS, true, userId);grantRuntimePermissions(pm,pkg, CAMERA_PERMISSIONS, true, userId);}// InstallergrantSystemFixedPermissionsToSystemPackage(pm,ArrayUtils.firstOrNull(getKnownPackages(PackageManagerInternal.PACKAGE_INSTALLER, userId)),userId, STORAGE_PERMISSIONS);