iPhone中图库类UIImagePickerController

在app中想得到手机中的图片，可使用类UIImagePickerController，经过这个类能够得到手机中的图片。使用这个类得到图片，都须要遵照UIImagePickerControllerDelegate,UINavigationControllerDelegate协议，在选择图片完毕后使用代理方法- (void)imagePickerController:(nonnull UIImagePickerController *)picker didFinishPickingImage:(nonnull UIImage *)image editingInfo:(nullable NSDictionary<NSString *,id> *)editingInfo便可得到选择的图片

 

 //得到图片  在图片选择器中选择

    UIImagePickerController *pickerController = [[UIImagePickerController alloc] init];

    [self presentViewController:pickerController animated:YES completion:nil];

    

    //设置UIImagePickerControllerDelegate的代理

    pickerController.delegate = self;

 

- (void)imagePickerController:(nonnull UIImagePickerController *)picker didFinishPickingImage:(nonnull UIImage *)image editingInfo:(nullable NSDictionary<NSString *,id> *)editingInfo{

    [self.imageList addObject:image];

    [self.collectionView reloadData];

    

    [self dismissViewControllerAnimated:YES completion:nil];

}