cacheSize method
Implementation
Future<int> cacheSize(String diskCacheDirName) async {
int size = 0;
try {
Directory localDir = await _getLocalDir(diskCacheDirName);
if (localDir.existsSync())
localDir.listSync().forEach((var file) {
size += file.statSync().size;
});
return size;
} catch (e) {
print(e);
}
return -1;
}