IOS

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)selectedImage editingInfo:(NSDictionary *)editingInfo {  

    NSData *data;  

  if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypePhotoLibrary])  {

    // Set source to the Photo Library  

         picker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;

    if (selectedImage) {

      // save image  

     }

    if (pickerController == picker)  {//这里的条件随便你自己定义了  

      //**主要就是下面这句话,会让你继续回到take camera的页面  

         pickerController.sourceType =    UIImagePickerControllerSourceTypeCamera;  

           } else {  

              [picker dismissModalViewControllerAnimated:YES];  

          }  

      }  

}  

原文地址:https://www.cnblogs.com/tx8899/p/3970320.html