使用Uri将文件保存在内部存储中(从存储访问网络获取)

import android.content.Context;
import android.net.Uri;
import android.os.AsyncTask;
import android.util.Log;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class SaveFileTask extends AsyncTask<Uri, Void, Void> {
    private Context context;

    public SaveFileTask(Context context) {
        this.context = context;
    }

    @Override
    protected Void doInBackground(Uri... uris) {
        Uri uri = uris[0];
        String fileName = "downloaded_file";
        File file = new File(context.getFilesDir(), fileName);

        try {
            URL url = new URL(uri.toString());
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.connect();

            if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
                throw new RuntimeException("HTTP error code : " + connection.getResponseCode());
            }

            InputStream inputStream = new BufferedInputStream(connection.getInputStream());
            FileOutputStream outputStream = new FileOutputStream(file);

            byte[] buffer = new byte[1024];
            int length;
            while ((length = inputStream.read(buffer)) > 0) {
                outputStream.write(buffer, 0, length);
            }

            outputStream.flush();
            outputStream.close();
            inputStream.close();

        } catch (Exception e) {
            Log.e("SaveFileTask", "Error downloading file", e);
        }

        return null;
    }
}