ios中调用相册选择图片问题（继续更新中）

会出现程序崩溃问题，需要在info.plist中添加key

这里写图片描述

除了相册的权限，iOS10之后如下的权限请求也是需要我们填写请求描述的，在这里也给大家提醒一下:

Privacy - Microphone Usage Description //麦克风权限
Privacy - Contacts Usage Description   //通讯录权限
Privacy - Camera Usage Description     //摄像头权限
Privacy - NSSiriUsageDescription       //Siri的权限
Privacy - Bluetooth Peripheral Usage Description //蓝牙
Privacy - Reminders Usage Description  //提醒事项
Privacy - Motion Usage Description     //运动与健康
Privacy - Media Libaray Usage Description //媒体资源库
Privacy - Calendars Usage Description  //日历

在storyboard中添加一个image控件

拖一个手势控件到image上

关联

添加代码

代码如下
需要添加如下代码
主函数

import UIKit
import MediaPlayer
import MobileCoreServices

class RenZhengViewController: UIViewController{


@IBOutlet weak var imageView: UIImageView!


override func viewDidLoad() {
    super.viewDidLoad()

    imageView.isUserInteractionEnabled = true // 开启控件的交互操作, 否则轻触事件无法传递
    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func backClicked(_ sender: UIButton) {
    self.dismiss(animated: true, completion: nil)
}


// ----------------------------------------


}

继承函数

//MARK: 轻触 图片控件
extension RenZhengViewController {

// MARK: 用于弹出选择的对话框界面
var selectorController: UIAlertController {
    let controller = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
    controller.addAction(UIAlertAction(title: "取消", style: .cancel, handler: nil)) // 取消按钮
    controller.addAction(UIAlertAction(title: "拍照选择", style: .default) { action in
        self.selectorSourceType(.camera)
    }) // 拍照选择
    controller.addAction(UIAlertAction(title: "相册选择", style: .default) { action in
        self.selectorSourceType(.photoLibrary)
    }) // 相册选择
    return controller
}

// MARK: 轻触手势事件的回调
@IBAction func onTapImageView(_ sender: UITapGestureRecognizer) {
    present(selectorController, animated: true, completion: nil)
}

func selectorSourceType(_ type: UIImagePickerControllerSourceType) {
    imagePickerController.sourceType = type
    // 打开图片选择器
    present(imagePickerController, animated: true, completion: nil)
}
}

//MARK: 扩展图片选择和结果返回

extension RenZhengViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {

// MARK: 图片选择器界面
var imagePickerController: UIImagePickerController {
    get {
        let imagePicket = UIImagePickerController()
        imagePicket.delegate = self
        imagePicket.sourceType = .photoLibrary
        return imagePicket
    }
}

// MARK: 当图片选择器选择了一张图片之后回调
private func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String: AnyObject]) {
    //dismissViewControllerAnimated(true, completion: nil)
    dismiss(animated: true, completion: nil) // 选中图片, 关闭选择器...这里你也可以 picker.dismissViewControllerAnimated 这样调用...但是效果都是一样的...

    imageView.image = info[UIImagePickerControllerOriginalImage] as? UIImage // 显示图片
    imageView.contentMode = .scaleToFill // 缩放显示, 便于查看全部的图片
}

// MARK: 当点击图片选择器中的取消按钮时回调
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    picker.dismiss(animated: true, completion: nil) // 效果一样的...
}
}

使用摄像头暂时未解决。。。。。。。。

ios中调用相册选择图片问题（继续更新中）

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