Can't open mail attachment on Android using Apportable

Question

I've used Android SDK to resolve this problem. You can look how use java with apportable here.

This is my java code

static private byte[] readBytes(InputStream inputStream) throws IOException {
    // this dynamically extends to take the bytes you read
    ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();

    // this is storage overwritten on each iteration with bytes
    int bufferSize = 1048576;
    byte[] buffer = new byte[bufferSize];

    // we need to know how may bytes were read to write them to the byteBuffer
    int len = 0;
    while ((len = inputStream.read(buffer)) != -1) {
        byteBuffer.write(buffer, 0, len);
    }

    // and then we can return your byte array.
    return byteBuffer.toByteArray();
}

public byte[] dataFromUrl(String path, Activity activity) {
    Uri uri = Uri.parse(path);

    InputStream is = null;
    byte[] data = null;

    try {
        is = activity.getContentResolver().openInputStream(uri);
        data = readBytes(is);
    } catch (Exception e) {
        e.printStackTrace();
    }

    return data;
}

And Objective-C part

+ (void)initializeJava
{
    [super initializeJava]; 

    // here your initialize code
    ...

    [KeyboardBridge registerInstanceMethod:@"dataFromUrl"
                                  selector:@selector(dataFromUrl:forActivity:)
                               returnValue:[NSData className]
                                 arguments:[NSString className], [AndroidActivity className], nil];

}

- (NSData *)dataFromUrl:(NSString *)path {
    return [self dataFromUrl:path forActivity:[AndroidActivity currentActivity]];
}