swift3.0调用相册

OGeek|极客世界-中国程序员成长平台 › 门户 › 编程› 移动开发›Swift 教程

原作者: [db:作者] 来自: [db:来源] 收藏邀请

1.swift3.0中调用相机和相册会导致崩溃

1.需要在info.plist文件中加入两个键值对，如下:

/// 都是String类型，内容任意的字符串即可
Privacy - Photo Library Usage Description
Privacy - Camera Usage Description

2.`UIImagePickerControllerSourceType`枚举

public enum UIImagePickerControllerSourceType : Int {
    case photoLibrary       //相册
    case camera             //相机
    case savedPhotosAlbum   //保存照片专辑
}

3.`功能实现Demo`

//FIXME: 点击添加图片按钮
@objc fileprivate func AddPhotoClick(){
    //1.判断照片控制器是否可用 ,不可用返回
    if !UIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
        return
    }
    //2.创建照片控制器
    let picVc = UIImagePickerController()
    //3.设置控制器类型
    picVc.sourceType = .photoLibrary
    //4.设置是否可以管理已经存在的图片或者视频
    picVc.allowsEditing = true
    //5.设置代理
    picVc.delegate = self
    //6.弹出控制器
    present(picVc, animated: true, completion: nil)
}

4.`UIImagePickerController`协议

1.需要遵循2个协议:

UIImagePickerControllerDelegate

UINavigationControllerDelegate

5.常用`imagePickerController代理`方法

// MARK:- UIImagePickerController代理方法
extension LXRComposeViewController :  UIImagePickerControllerDelegate,UINavigationControllerDelegate{
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        LXRLog(message: info)
    }
}