MnistClassifier.java

public static MnistClassifier classifier(AssetManager assetManager, String modelPath) throws IOException {
    ByteBuffer byteBuffer = loadModelFile(assetManager, modelPath);
    Interpreter interpreter = new Interpreter(byteBuffer);
    return new MnistClassifier(interpreter);
}
private static ByteBuffer loadModelFile(AssetManager assetManager, String modelPath) throws IOException {
    AssetFileDescriptor fileDescriptor = assetManager.openFd(modelPath);
    FileInputStream inputStream = new FileInputStream(fileDescriptor.getFileDescriptor());
    FileChannel fileChannel = inputStream.getChannel();
    long startOffset = fileDescriptor.getStartOffset();
    long declaredLength = fileDescriptor.getDeclaredLength();
    return fileChannel.map(FileChannel.MapMode.READ_ONLY, startOffset, declaredLength);
}