其实系统分享实现很简单，只需要几行代码就可以啦，主要是还要在info里面配置一些小东西，忽略了就会报错了。

两张图片教会你做系统分享：

1.在需要时写下以下代码

2.在info中配置Supported

NSString*info =@"标题";

NSData* data = [NSDatadataWithContentsOfURL:[NSURLURLWithString:@“这里加载网络图片”]];

UIImage*image=[UIImageimageWithData:data];

NSURL*url = [NSURLURLWithString:@“URL”];

NSArray*postItems=@[info,image,url];

UIActivityViewController*controller = [[UIActivityViewControlleralloc]initWithActivityItems:postItemsapplicationActivities:nil];

controller.excludedActivityTypes=@[UIActivityTypePostToFacebook];

if(UI_USER_INTERFACE_IDIOM() ==UIUserInterfaceIdiomPhone) {//if iPhone

[selfpresentViewController:controlleranimated:YEScompletion:nil];

}

else{//if iPad

UIBarButtonItem*shareBarButtonItem =self.navigationItem.leftBarButtonItem;

UIPopoverController*popup = [[UIPopoverControlleralloc]initWithContentViewController:controller];

[popuppresentPopoverFromBarButtonItem:shareBarButtonItempermittedArrowDirections:UIPopoverArrowDirectionAnyanimated:YES];

}