SO Android 库的运行时目录在哪里？

Question

我有一个 Android 应用程序，它使用外部 .so 库来工作 (OpenALPR)。

此 .so 库还需要一个外部配置文件才能正常工作。当我加载我的库并对其进行初始化时，我需要在本机函数中指定 conf 文件到库的路径。

private native void initialize(String country, String configFile, String runtimeDir);

这是我的项目结构：

我应该给哪条路？ 我找不到将我的文件放在哪里以便我的图书馆可以看到它们

Answer 1

诀窍是手动将资产的内容移动到实际的 /data/data/com.example.app/ 文件夹，这是存储库的地方。

这是实现这一目标的代码片段 (from the official android repo)

 /**
     * Copies the assets folder.
     *
     * @param assetManager The assets manager.
     * @param fromAssetPath The from assets path.
     * @param toPath The to assets path.
     *
     * @return A boolean indicating if the process went as expected.
     */
    public static boolean copyAssetFolder(AssetManager assetManager, String fromAssetPath, String toPath) {
        try {
            String[] files = assetManager.list(fromAssetPath);

            new File(toPath).mkdirs();

            boolean res = true;

            for (String file : files)

                if (file.contains(".")) {
                    res &= copyAsset(assetManager, fromAssetPath + "/" + file, toPath + "/" + file);
                } else {
                    res &= copyAssetFolder(assetManager, fromAssetPath + "/" + file, toPath + "/" + file);
                }

            return res;
        } catch (Exception e) {
            e.printStackTrace();

            return false;
        }
    }

    /**
     * Copies an asset to the application folder.
     *
     * @param assetManager The asset manager.
     * @param fromAssetPath The from assets path.
     * @param toPath The to assests path.
     *
     * @return A boolean indicating if the process went as expected.
     */
    private static boolean copyAsset(AssetManager assetManager, String fromAssetPath, String toPath) {
        InputStream in = null;
        OutputStream out = null;

        try {
            in = assetManager.open(fromAssetPath);

            new File(toPath).createNewFile();

            out = new FileOutputStream(toPath);

            copyFile(in, out);
            in.close();

            in = null;

            out.flush();
            out.close();

            out = null;

            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * Copies a file.
     *
     * @param in The input stream.
     * @param out The output stream.
     *
     * @throws IOException
     */
    private static void copyFile(InputStream in, OutputStream out) throws IOException {
        byte[] buffer = new byte[1024];

        int read;

        while ((read = in.read(buffer)) != -1) {
            out.write(buffer, 0, read);
        }
    }

SO Android 库的运行时目录在哪里？

Where is the runtime directory for SO Android libs?

android

runtime

shared-libraries