用mediastore api下载视频到手机

用mediastore api不需要MANAGE_EXTERNAL_STORAGE权限。

下面的代码演示下载视频文件到手机中的Download目录。

public static boolean downloadVideo(String shareInfo, String saveToFolder, String shortUrl) {

        //创建目录
        FileUtils.createOrExistsDir(saveToFolder);

        if (isExists(shortUrl)) {
            //下载过了
            return true;
        }

        File file = new File(saveToFolder, EncryptUtils.encryptMD5ToString(shortUrl) + ".mp4");
        File fileTemp = new File(saveToFolder, EncryptUtils.encryptMD5ToString(shortUrl) + ".temp");

        // Set up headers
        HttpURLConnection connection = null;
        try {
            URL url = new URL(shareInfo);
            connection = (HttpURLConnection) url.openConnection();
            // Set necessary headers
            connection.setRequestProperty("Host", url.getHost());
            connection.setRequestProperty("Connection", "keep-alive");
            connection.setRequestProperty("User-Agent", UA);
            connection.connect();
        } catch (IOException e) {
            Log.e(TAG, "Failed to open connection", e);
            if (connection != null) {
                connection.disconnect();
            }
            return false;
        }

        // Download file
        try (InputStream in = connection.getInputStream()) {
            // Create or update media file in MediaStore
            Uri mediaUri = saveMediaFile(_Context, file, in);
            return mediaUri != null;
        } catch (IOException e) {
            Log.e(TAG, "Failed to download file", e);
            return false;
        } finally {
            connection.disconnect();
        }

    }

private static void copy(InputStream input, OutputStream output) throws IOException {
        byte[] buffer = new byte[4096];
        int bytesRead;
        while ((bytesRead = input.read(buffer)) != -1) {
            output.write(buffer, 0, bytesRead);
        }
    }


    private static Uri saveMediaFile(Context context, File file, InputStream inputStream) {
        ContentResolver contentResolver = context.getContentResolver();
        ContentValues contentValues = new ContentValues();
        contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, file.getName());
        contentValues.put(MediaStore.MediaColumns.MIME_TYPE, "video/mp4");

        // For Android Q and above, use MediaStore API with MediaStore.Downloads
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, Environment.DIRECTORY_DOWNLOADS + "");
            Uri uri = contentResolver.insert(MediaStore.Downloads.EXTERNAL_CONTENT_URI, contentValues);
            if (uri != null) {
                try {
                    // Write the content of the file to the output stream
                    try (OutputStream outputStream = contentResolver.openOutputStream(uri)) {
                        if (outputStream != null) {
                            copy(inputStream, outputStream);
                        }
                    }
                    return uri;
                } catch (IOException e) {
                    Log.e(TAG, "Failed to write content to the output stream", e);
                    return null;
                }
            }
        } else {
            // For versions below Android Q, save the file directly
            try {
                Uri uri = contentResolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);
                if (uri != null) {
                    try (OutputStream outputStream = contentResolver.openOutputStream(uri)) {
                        if (outputStream != null) {
                            copy(inputStream, outputStream);
                        }
                    }
                    return uri;
                }
            } catch (IOException e) {
                Log.e(TAG, "Failed to write content to the output stream", e);
            }
        }

        return null;
    }