public ImageFilesBean returnImageFiles() {
        List<String> parentsPthe = new ArrayList<>();
HashMap<String, String> pathMap = new HashMap<>();
Cursor cursor = getContentResolver().query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null, null, null
 
);
        while (cursor.moveToNext()) {
            //獲取其他圖片資訊
//            String fileName = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME));
String filePath = cursor.getString(cursor
                    .getColumnIndex(MediaStore.Images.Media.DATA));
String parentName = new 
 
File(filePath).getParentFile().getAbsolutePath();
            if (!parentsPthe.contains(parentName)) {
                parentsPthe.add(parentName);
pathMap.put(parentName, filePath);
}
        }
        cursor.close();
        return ImageFilesBean.returnBean(parentsPthe, pathMap);
}

package beini.com.ddd;
 
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class ImageFilesBean {
    private List<String> parentsPthe = new ArrayList<>();
    private HashMap<String, String> pathMap = new HashMap<>();
    public List<String> getParentsPthe() {
        return parentsPthe;
}

    public ImageFilesBean setParentsPthe(List<String> parentsPthe) {
        this.parentsPthe = parentsPthe;
        return this;
}

    public HashMap<String, String> getPathMap() {
        return pathMap;
}

    public ImageFilesBean setPathMap(HashMap<String, String> pathMap) {
        this.pathMap = pathMap;
        return this;
}

    public static ImageFilesBean returnBean(List<String> parentsPthe, HashMap<String, String> pathMap) {
        return new ImageFilesBean().setParentsPthe(parentsPthe).setPathMap(pathMap);
}
}