通过电子邮件共享图像的UIActivityViewController没有扩展名

附加的图像只是“附件-1”，没有扩展名。 我如何指定一个？

NSData *compressedImage = UIImageJPEGRepresentation(self.resultImage, 0.8 ); UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[ @"Check this out!", compressedImage ] applicationActivities:nil]; [self.navigationController presentViewController:activityViewController animated:YES completion:nil]; 

Answer 1

根据此答案，您应该能够使用此变通方法指定文件名

 NSData *compressedImage = UIImageJPEGRepresentation(self.resultImage, 0.8 ); NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSString *imagePath = [docsPath stringByAppendingPathComponent:@"image.jpg"]; NSURL *imageUrl = [NSURL fileURLWithPath:imagePath]; [compressedImage writeToURL:imageUrl atomically:YES]; // save the file UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[ @"Check this out!", imageUrl ] applicationActivities:nil]; 

这种方法的明显缺点是您必须将映像保存在磁盘上。

Answer 2

感谢timeuser的建议，将UIImage转换为NSData。

 NSData * data = UIImageJPEGRepresentation(original,1.0); UIActivityViewController * activity =[[UIActivityViewController alloc] initWithActivityItems:@[@"Your Text", data] applicationActivities:nil]; [self presentViewController:activity animated:true completion:^{ }];