android - 如何将文件从“资产”复制到有根 Android 设备中的系统？

Question

我想做。但我得到 /system/app/filename: open failed: EROFS (Read-only file system) 错误。

Answer 1

这是一个例子。请试试

private void saveFileToInternal(String orginal_url) {
        File file = new File(orginal_url);
        File dir = mContext.getDir(TEMP_FOLDER, Context.MODE_PRIVATE);
        File dest = new File(dir, "filename_" + file.getName());
        try {
            FileOutputStream out = new FileOutputStream(dest);
            out.flush();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("Can not create file", e.getMessage());
        }
    }