Android如何获取包含图像的文件夹列表？

Question

我想要实现一个图库。在主视图中，我想查看图像文件夹列表。单击网格项应该打开网格与相关文件夹的图像

Answer 1

这是一些代码，我希望它有用：

    // Get directory where camera images are stored
    String state = Environment.getExternalStorageState();
    File imageDir = null;
    if (Environment.MEDIA_MOUNTED.equals(state) || Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        File externalDir = Environment.getExternalStorageDirectory();
        imageDir = new File(externalDir, "DCIM/camera");
        if (!imageDir.exists())
            /* Handle error */;
    }

    // List filenames of images
    String[] fileNames = imageDir.list();