由于Assets文件夹中的文件已编译到您的APK中,因此资源文件夹中的文件或APK中的任何文件都没有“Uri”。 如果您需要能够传递Uri,您可能希望将资产复制到您的应用程序的文档或其他文件夹,然后获取Uri。
首先创建一个方法来获取读取流并写入写入流并将资产写入文件:
private void ReadWriteStream(Stream readStream, Stream writeStream)
{
int Length = 256;
Byte[] buffer = new Byte[Length];
int bytesRead = readStream.Read(buffer, 0, Length);
// write the required bytes
while (bytesRead > 0)
{
writeStream.Write(buffer, 0, bytesRead);
bytesRead = readStream.Read(buffer, 0, Length);
}
readStream.Close();
writeStream.Close();
}
然后从资产中获取读取流:
AssetFileDescriptor afd = Assets.OpenFd("filenameinAssetsfolder.ext");
var readStream = afd.CreateOutputStream();
然后创建文件和写入流的路径:
// This will be your final file path
var path