Question

我正在尝试使用流从网上下载MP3文件并使用此方法将其保存到铃声文件夹

Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RINGTONES)

我添加了所需的权限：

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.write_external_storage"/>

当我在模拟器上检查我的应用程序（我目前使用Andy）时，该应用程序运行正常。当我在实际设备上检查它（不止一个）时，我得不到许可： /storage/sdcard0/Ringtones/MyRingtone.mp3：打开失败：EACCES（权限被拒绝）

任何人都知道遗失了什么？

以下是完整的下载方法：

protected String doInBackground(String... f_url) {

    Log.d(TAG, "doInBackground.Started");

    int count;
    try {
        mDownloadSuccess = true;
        URL url = new URL(f_url[0]);
        URLConnection connection = url.openConnection();
        connection.connect();

        // this will be useful so that you can show a typical 0-100%
        // progress bar
        int lengthOfFile = connection.getContentLength();

        // download the file
        InputStream input = new BufferedInputStream(url.openStream(),
                8192);

        // Output stream
        File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RINGTONES);
        File file = new File(path, mModel.getTitle() + ".mp3");

        OutputStream output = new FileOutputStream(file);

        byte data[] = new byte[1024];

        long total = 0;

        while ((count = input.read(data)) != -1) {
            total += count;
            // publishing the progress....
            // After this onProgressUpdate will be called
            publishProgress("" + (int) ((total * 100) / lengthOfFile));

            // writing data to file
            output.write(data, 0, count);
        }

        // flushing output
        output.flush();

        // closing streams
        output.close();
        input.close();

    } catch (Exception e) {
        Log.e("Error: ", e.getMessage());
        mDownloadSuccess = false;
    }

    return null;
}

由于

Answer 1

解决了它。看来，uses-permission是区分大小写的应该是：

我不知道为什么它设法将它保存在模拟器上。

Android：EACCES权限被拒绝将文件保存在铃声文件夹

1 个答案: