iOS 原生分享

NSInteger index = self.scroll.contentOffset.x / self.scroll.width;

    UIImageView*imgV = [self.viewviewWithTag:200+ index];

    NSArray*activityItems =@[imgV.image];

    UIActivityViewController *activityVc = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:nil];

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

    activityVc.completionWithItemsHandler= ^(UIActivityType_NullableactivityType,BOOLcompleted,NSArray*_NullablereturnedItems,NSError*_NullableactivityError) {

        if(completed) {

            NSLog(@"分享成功");

        }else{

            NSLog(@"分享取消");

        }

    };