ios 相机调用之读取相册

UIIamgePickerControllerr可以从照片库中读取一张图片到咱们应用程序中来

 

步骤:

 

//创建图片判断图片库是否可以使用

 

if([UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypePhotoLibrary]){

 

1.创建一个UIImagePickerController对象

 

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

 

//2.需要设置该对象拾取源属性

 

picker.souceType=UIImagePickerControllerSourceTypePhotoLibrary;

 

//3.设置代理

 

picker.delegate=self;

 

实现代理<UIImagePickerControllerDelegate,UINavigationControllerdelegate>

 

//4.显示，以modal的形式显示在当前控制器的view中

 

[self presenTViewController:picker animated:YES completion:nil];

 

 

 

//获取在照片库中选择图片

 

-(void)imagePickerController:(nonnull UIImagePickerController *)picker didFinshPickingMediaWithInfo:(nonnull NSDictionary<NSString * id>*) info

 

{

 

//获取图片

 

UIImage *img=info[UIImagePickeControllerOriginalImage];

 

self.photo.image=img;

 

//隐藏

 

[picker dismissViewControllerAnimated:YES completion:nil];

 

}

 

//点击取消

 

-(void)immagePickerControllerDidCancel:(nonnull UIImagePickerController *) picker

 

{

 

//隐藏

 

[picker dismissViewControllerAnimated:YES completion:nil];

 

}