Kotlin上传相册图片到服务器

 打开图库拿到图片

    /**
     * 相册
     */
    private fun takeGallery() {
        val intent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
        intent.type = "image/*"
        startActivityForResult(intent, REQUEST_CODE_PICK_PHOTO)
    }

 获取图片的路径

REQUEST_CODE_PICK_PHOTO -> {
        //获取图片的Uri地址
        val currentPictureUri = data?.data  
        currentPictureUri?.apply {
            //从系统表中查询指定Uri对应的照片
            val filePathColumn = arrayOf(MediaStore.Images.Media.DATA)
            val cursor = contentResolver.query(currentPictureUri!!, filePathColumn, null, null, null)
            cursor?.moveToFirst()
            //获取照片路径
            val path = cursor?.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA))
            cursor?.close()
            //把Uri转file
            val currentPictureFile = File(path)
            val picture = Picture()
            picture.file = currentPictureFile
            picture.uri = currentPictureUri
            pictures.add(pictures.size - 1, picture)
            pictureAdapter.notifyDataSetChanged()
            tv_picture_num.text = "(${pictures.size - 1}/5)"
        }
            
}