创建createVC

    UIImagePickerController* ipc = [[UIImagePickerController alloc] init];
    ipc.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; //图像来源
    ipc.delegate = self;
    [self presentModalViewController:ipc animated:YES];
        ````
        完善代理delegate方法
        ````
        //选择图片
//- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
    headView.image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
    [picker dismissModalViewControllerAnimated:YES];
}

//取消
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    [picker dismissModalViewControllerAnimated:YES];
}