UIImagePickerController使用小结

本文讲述如何进入系统的照片或者照相机

1.创建一个照片选择控制器

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

2.设置数据源（弹出的是否直接是照片库）

imagePickerVc.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;

3.设置代理（UIImagePickerControllerDelegate）

imagePickerVc.delegate = self;

4.把图片库Modal出来

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

如何监听并处理弹出来照片库的点击事件？

1.遵守代理协议

@interface ViewController ()< UIImagePickerControllerDelegate>

2.设置代理为self

imagePickerVc.delegate = self;

3.实现代理方法

- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info{

//获取用户选择照片

UIImage*image = info[UIImagePickerControllerOriginalImage];

//把Modal出来的imagePickerController弹出

[selfdismissViewControllerAnimated:YEScompletion:nil];

//在此处理图片，赋值

}