如何通过WhatsApp分享图像

Question

我正在使用这个代码，但它不工作，它怎么能适合它?
有人帮助吗?谢谢!

UIImage  *iconImage = [UIImage imageNamed:@"Home01-A01.png"];
NSString *savePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/whatsAppTmp.wai"];
[UIImageJPEGRepresentation(iconImage, 1.0) writeToFile:savePath atomically:YES];
_documentInteractionController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:savePath]];
_documentInteractionController.UTI = @"net.whatsapp.image";
_documentInteractionController.delegate = self;
[_documentInteractionController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];

Answer 1

嗨，你可以使用uidocumentationviewcontroller在WhatsApp上分享你的文件，执行以下操作来实现相同的目标，

在你的viewcontroller.h文件

为添加Delegate

UIDocumentInteractionControllerDelegate

• 像这样声明UIDocumentInteractionController对象

UIDocumentInteractionController *控制器;

在你的视图控制器中。m文件,

• 为uidocdocumentationview控制器添加以下委托方法来跟踪成功和失败的状态

  pragma mark - Delegate Methods

  - (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller {
     return  self;
  }    
  - (void)documentInteractionController:(UIDocumentInteractionController *)controller willBeginSendingToApplication:(NSString *)application {
     NSLog(@"Starting to send this puppy to %@", application);
  }
  - (void)documentInteractionController:(UIDocumentInteractionController *)controller didEndSendingToApplication:(NSString *)application {
     NSLog(@"We're done sending the document.");
  }
  

  • 添加以下代码来共享您的文件，

    -(void)openDocument {
        // here's a URL from our bundle
        NSURL *documentURL = [[NSBundle mainBundle]URLForResource:@"chat" withExtension:@"png”];// You can set your filename and extention here
        // pass it to our document interaction controller
        controller = [[UIDocumentInteractionController alloc]init];
        controller.delegate = self;
        controller.URL = documentURL;
        // present the preview
        [controller presentPreviewAnimated:YES];
    }
    

注意:指定的URL必须是本地的。

UIDocumentInteractionController的目标是共享(本地)文档应用程序之间。如果您的文件没有存储在本地，那么您可以将文件存储在临时或本地缓存目录中，然后从主要包。