java - 文件输入流不适用于 API 级别 29

Question

我有一个尝试提取 m3u 文件的方法，但它在 api 级别 29 下不起作用。我在 Logcat 屏幕上收到以下错误:

2019-10-03 20:46:53.165 32591-417/? E/Google: java.io.IOException: Cleartext HTTP traffic to mysite.tk not permitted

我的方法:

@SuppressLint("StaticFieldLeak")
class _loadFile extends AsyncTask<String, Void, Boolean> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        spinner.setVisibility(View.VISIBLE);
    }

    @Override
    protected Boolean doInBackground(String... strings) {
        try { //new FileInputStream (new File(name)
            is = new FileInputStream(new File(strings[0])); // if u r trying to open file from asstes InputStream is = getassets.open(); InputStream
            M3UPlaylist playlist = parser.parseFile(is);
            mAdapter.update(playlist.getPlaylistItems());

            return true;
        } catch (Exception e) {
            Log.d("Google", "_loadFile: " + e.toString());
            return false;
        }
    }

    @Override
    protected void onPostExecute(Boolean aBoolean) {
        super.onPostExecute(aBoolean);
        spinner.setVisibility(View.GONE);
    }
}

编辑:

我授予了 ClearText 权限，但出现了新错误。

Google: _loadFile: java.io.FileNotFoundException: /storage/emulated/0/Netuptv/data.m3u: open failed: ENOENT (No such file or directory)

编辑:

我的文件路径。我认为问题就在这里。但我没有解决这个问题的信息。

   static final File DEFA = Environment.getExternalStorageDirectory();
    public static final File dir = new File(DEFA.getPath() + "/Netuptv");
    static final File filepath = new File(dir.getPath() + "/data.m3u");

Answer 1

请检查您是否将此行 android:usesCleartextTraffic="true" 添加到您的 list 中。

由于文件访问 API 在 Android Q 上已弃用，我强烈建议您阅读这篇文章 article作者:CommaneWare，正如本文提到的，尝试使用 android:requestLegacyExternalStorage="true" 来避免文件访问问题

尝试以下操作:

        String fileName = "data.m3u";
        File storageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES)
                        + "/Netuptv");
        boolean success = true;
        if (!storageDir.exists()) {
            success = storageDir.mkdirs();
        }
        if (success) {
            File file = new File(storageDir,fileName);
            filepath = file.getAbsolutePath();
        }