iOS利用系统分享实现分享视频功能

1. 先说说自己走的弯路

要使用系统分享，由于之前没接触过，上网发现UIActivityViewController可以实现原生分享。UIActivityViewController可以分享文本、图片、链接，

NSString *textToShare = @"文本内容"; UIImage *imageToShare = [UIImage imageNamed:@"imagename"]; NSURL *urlToShare = [NSURL URLWithString:@"http:baidu.com"]; NSArray *activityItems = @[textToShare, imageToShare, urlToShare]; UIActivityViewController *activityVC = [[UIActivityViewController alloc]initWithActivityItems:activityItems applicationActivities:nil]; //不出现在活动项目 activityVC.excludedActivityTypes = @[UIActivityTypePrint, UIActivityTypeCopyToPasteboard,UIActivityTypeAssignToContact,UIActivityTypeSaveToCameraRoll,UIActivityTypeAddToReadingList]; //给activityVC的属性completionHandler写一个block。 //用以UIActivityViewController执行结束后，被调用，做一些后续处理。 UIActivityViewControllerCompletionWithItemsHandler myBlock = ^(UIActivityType activityType, BOOL completed, NSArray * returnedItems, NSError * activityError) { LyLog(@"activityType :%@", activityType); if (completed) { LyLog(@"completed"); } else { LyLog(@"cancel"); } }; // 初始化completionHandler，当post结束之后（无论是done还是cancell）该blog都会被调用 activityVC.completionWithItemsHandler = myBlock; UIViewController * rootVc = [UIApplication sharedApplication].keyWindow.rootViewController; [rootVc presentViewController:activityVC animated:TRUE completion:nil];

具体使用方法可参考：http://www.jianshu.com/p/a1c9621a3f4e

本来以为UIActivityViewController 不能分享视频，经网友cys482提醒，说构建NSURL时采用 [NSURL fileURLWithPath:urlString];就可以分享视频

然后我试了下

NSString *textToShare = @"文本内容"; UIImage *imageToShare = [UIImage imageNamed:@"test"]; NSURL*urlToShare= [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"test" ofType:@"mp4"]]; NSArray *activityItems = @[textToShare,imageToShare,urlToShare]; 然后出现

然后修改activityItems 只包含url

NSString *textToShare = @"文本内容"; UIImage *imageToShare = [UIImage imageNamed:@"test"]; NSURL*urlToShare= [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"test" ofType:@"mp4"]]; NSArray *activityItems = @[urlToShare]; bing~go ，分享成功！！！

2. UIDocumentInteractionController 具有预览和分享的功能

NSURL * url = [NSURL fileURLWithPath:filePath]; _documentController = [UIDocumentInteractionController interactionControllerWithURL:url]; UIViewController * vc = [UIApplication sharedApplication].keyWindow.rootViewController; [self.documentController presentOpenInMenuFromRect:[UIScreen mainScreen].bounds inView:vc.view animated:YES]; self.documentController.delegate = self;其中filePath是视频文件地址

UIDocumentInteractionController的用法具体可参考：http://www.jianshu.com/p/3f03897cf98a

3.另外需要注意的地方

当弹出分享列表，但是点击第三方平台按钮没有响应是，去设置里面看下

点开添加账号信息