Android：获取指定文件夹内的所有图片

public static List<String> getFilesAllName(String path){
    //传入指定文件夹的路径
　　　　File file = new File(path);
    File[] files = file.listFiles();
    List<String> imagePaths = new ArrayList<>();
    for(int i = 0; i < files.length; i++){
        if(checkIsImageFile(files[i].getPath())){
            imagePaths.add(files[i].getPath());
        }

    }
    return imagePaths;
}

/**
 * 判断是否是照片
 */
public static boolean checkIsImageFile(String fName){
    boolean isImageFile = false;
    //获取拓展名
    String fileEnd = fName.substring(fName.lastIndexOf(".") + 1,
            fName.length()).toLowerCase();
    if(fileEnd.equals("jpg") || fileEnd.equals("png") || fileEnd.equals("gif")
            || fileEnd.equals("jpeg")|| fileEnd.equals("bmp")){
        isImageFile = true;
    }else{
        isImageFile = false;
    }
    return isImageFile;
}