下面是自己项目中写的请求相机跟相册权限,有需要则直接copy过来用

需要#import <Photos/Photos.h>

相册权限

- (void)requestCameraPermissions {
    //相机权限
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if (authStatus ==AVAuthorizationStatusRestricted ||//此应用程序没有被授权访问的照片数据。

        authStatus ==AVAuthorizationStatusDenied)  //用户已经明确否认了这一照片数据的应用程序访问
    {
        //弹窗
        UIAlertController * alertC = [UIAlertController alertControllerWithTitle:@"未得到您的允许,无法打开相机进行拍照" message:nil preferredStyle:UIAlertControllerStyleAlert];
        [self presentViewController:alertC animated:YES completion:nil];

        UIAlertAction * action = [UIAlertAction actionWithTitle:@"去打开" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
            // 无权限 引导去开启
            NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
            if ([[UIApplication sharedApplication]canOpenURL:url]) {
                [[UIApplication sharedApplication]openURL:url];
            }
        }];
        action.textColor = NAV_Login_BGC;
        [alertC addAction:action];
    }else{
       [self openCamera]; //打开相机
    }
}

- (void)requestPhoto{

    // 判断授权状态
    PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
    if (status == PHAuthorizationStatusRestricted) { // 此应用程序没有被授权访问的照片数据。可能是家长控制权限。
        NSLog(@"因为系统原因, 无法访问相册");
    } else if (status == PHAuthorizationStatusDenied) { // 用户拒绝访问相册
        //弹窗
        UIAlertController * alertC = [UIAlertController alertControllerWithTitle:@"未得到您的允许,读取您的相册" message:nil preferredStyle:UIAlertControllerStyleAlert];
        [self presentViewController:alertC animated:YES completion:nil];

        UIAlertAction * action = [UIAlertAction actionWithTitle:@"去打开" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
            // 无权限 引导去开启
            NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
            if ([[UIApplication sharedApplication] canOpenURL:url]) {
                [[UIApplication sharedApplication] openURL:url];
            }
        }];

        action.textColor = NAV_Login_BGC;
        [alertC addAction:action];

    } else if (status == PHAuthorizationStatusAuthorized) { // 用户允许访问相册
        // 放一些使用相册的代码
        [self openAlbum];
    } else if (status == PHAuthorizationStatusNotDetermined) { // 用户还没有做出选择
        // 弹框请求用户授权
        [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
            if (status == PHAuthorizationStatusAuthorized) { // 用户点击了好
                // 放一些使用相册的代码
                 [self openAlbum];
            }
        }];
    }
}