Question

ios怎么获取系统弹出的相册的照片

Answer 1

一.获取单张图片

思路:

1.利用UIImagePickerController可以从系统自带的App(照片\相机)中获得图片

2.设置代理,遵守代理协议

注意这个UIImagePickerController类比较特殊,需要遵守两个代理协议
@interface ViewController () <UIImagePickerControllerDelegate, UINavigationControllerDelegate>

3.实现代理的方法didFinishPickingMediaWithInfo

- (void)getImageFromIpc
{
// 1.判断相册是否可以打开
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) return;
// 2. 创建图片选择控制器
UIImagePickerController *ipc = [[UIImagePickerController alloc] init];
/**
typedef NS_ENUM(NSInteger, UIImagePickerControllerSourceType) {
UIImagePickerControllerSourceTypePhotoLibrary, // 相册
UIImagePickerControllerSourceTypeCamera, // 用相机拍摄获取
UIImagePickerControllerSourceTypeSavedPhotosAlbum // 相簿
}
*/
// 3. 设置打开照片相册类型(显示所有相簿)
ipc.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
// ipc.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
// 照相机
// ipc.sourceType = UIImagePickerControllerSourceTypeCamera;
// 4.设置代理
ipc.delegate = self;
// 5.modal出这个控制器
[self presentViewController:ipc animated:YES completion:nil];
}

#pragma mark -- <UIImagePickerControllerDelegate>--
// 获取图片后的操作
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
// 销毁控制器
[picker dismissViewControllerAnimated:YES completion:nil];

// 设置图片
self.imageView.image = info[UIImagePickerControllerOriginalImage];
}