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moor_ffi: Workaround to load sqlite3 on old Android devices

This commit is contained in:
Simon Binder 2020-05-12 19:41:16 +02:00
parent 04f24d3184
commit 4611ecc3c8
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1 changed files with 18 additions and 1 deletions
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19
moor_ffi/lib/src/load_library.dart
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@ -1,5 +1,6 @@
import 'dart:ffi';
import 'dart:io';
import 'dart:math';
import 'package:meta/meta.dart';
@ -23,7 +24,23 @@ final OpenDynamicLibrary open = OpenDynamicLibrary._();
DynamicLibrary _defaultOpen() {
if (Platform.isLinux || Platform.isAndroid) {
return DynamicLibrary.open('libsqlite3.so');
try {
return DynamicLibrary.open('libsqlite3.so');
} catch (_) {
if (Platform.isAndroid) {
// On some (especially old) Android devices, we somehow can't dlopen
// libraries shipped with the apk. We need to find the full path of the
// library (/data/data/<id>/lib/libsqlite3.so) and open that one.
// For details, see https://github.com/simolus3/moor/issues/420
final appIdAsBytes = File('/proc/self/cmdline').readAsBytesSync();
final endOfAppId = max(appIdAsBytes.indexOf(0), 0);
final appId = String.fromCharCodes(appIdAsBytes.sublist(0, endOfAppId));
return DynamicLibrary.open('/data/data/$appId/lib/libsqlite3.so');
}
rethrow;
}
}
if (Platform.isMacOS || Platform.isIOS) {
// todo: Consider including sqlite3 in the build and use DynamicLibrary.