Question

我正在sdcard中导出文件，但是，我正面临一个FileNotFound异常（04-12 01:26:18.494: DEBUG/Carburant(4568): /mnt/sdcard/Carburant/alaa.peugeot.settings.dat/alaa.peugeot.settings.dat (Is a directory) ）这是代码：

try {
    File sdCard = Environment.getExternalStorageDirectory();
    boolean mExternalStorageAvailable = false;
    boolean mExternalStorageWriteable = false;
    String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state)) {
        // We can read and write the media
        Log.d("Carburant", "Sdcard can read/write !!");
        mExternalStorageAvailable = mExternalStorageWriteable = true;
        try {
            final SharedPreferences preferences = PreferenceManager
                    .getDefaultSharedPreferences(context);
            String fileName = context.getResources().getString(
                R.string.fileName);
            String fileDir = "" + preferences.getString("login", "")
                + "." + preferences.getString("marque", "") + ".";
            File f2 = new File(context.getFilesDir(), fileDir
                + fileName);
            String y = f2.getAbsolutePath();
            Log.d("HI Export", y);
            InputStream in = new FileInputStream(f2);
            File dir = new File(sdCard.getAbsolutePath()
                + "/Carburant/");
            String x = dir.getAbsolutePath();
            Log.d("HI", x);
            File file = new File(dir, fileDir + fileName);
            file.mkdirs();
            OutputStream out = new FileOutputStream(file);
            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) != -1) {
                out.write(buf, 0, len);
            }
            // out.flush();
            in.close();
            out.close();
            Toast.makeText(context, "Export effectué",
                Toast.LENGTH_SHORT).show();
        } catch (FileNotFoundException ex) {
            Toast.makeText(context, "File Not found",
                Toast.LENGTH_SHORT).show();
            String x = ex.getMessage();
            Log.d("Carburant", x);
        } catch (IOException e) {
            Toast.makeText(context, "Echec", Toast.LENGTH_SHORT).show();
        }
    }
    // copyfile(nom,file.getAbsolutePath());
    else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        // We can only read the media
        Log.d("Carburant", "Sdcard only read !!");
        mExternalStorageAvailable = true;
        mExternalStorageWriteable = false;
    } else {
        // Something else is wrong. It may be one of many other states,
        // but all we need
        // to know is we can neither read nor write
        mExternalStorageAvailable = mExternalStorageWriteable = false;
    }
} catch (Exception e) {
    Log.d("CARBURANT", e.getMessage());
}

想要将文件从/data/data/<package name>/fileDir+fileName导出到SD卡中的Carburant目录。

Answer 1

File file = new File(dir, fileDir+fileName);
file.mkdirs();

我认为您错误地创建了一个名为/mnt/sdcard/Carburant/alaa.peugeot.settings.dat/alaa.peugeot.settings.dat的目录，现在代码无法覆盖它？

android sdcard中的FileNotFoundException

1 个答案: