程序化地截取屏幕并发送截图

Question

程序化地截取屏幕并发送截图

iossmsscreenshotmms

4

当用户在我的应用程序中点击按钮时，我想要截取当前视图的屏幕截图，并打开一个带有该屏幕截图图像作为附件的短信。在iOS7中我该怎么做？

（我看到了如何截图的帖子，但没有关于如何截图并将其附加到消息的任何内容）

谢谢！

- Kreutzer

https://dev59.com/0GIk5IYBdhLWcg3wi-tM - Shubhank

要截屏，您可以使用Quartz Display Services即CGDisplayCreateImageForRect或CGDisplayCreateImage。 - Himanshu Joshi

你的问题是发送屏幕截图作为MMS吗？你是否编写了捕获屏幕截图的代码？ - Charan Giri

我能够截屏，但我想自动将其附加到MMS。 - Kreutzer

3个回答

0

要截屏，您可以使用Quartz Display Services方法。

您可以将矩形传递为：

CGRect = [self bounds];

然后使用CGDisplayCreateImageForRect创建图像

CGImageRef selectedScreenImage;
selectedScreenImage = CGDisplayCreateImageForRect(kCGDirectMainDisplay, rect);

将其转换为NSData

NSData *data = (NSData *)CFBridgingRelease(CGDataProviderCopyData(CGImageGetDataProvider(selectedScreenImage)));

然后使用MFMailComposeViewController将其附加到您的消息中

if ([MFMailComposeViewController canSendMail])
    {
        MFMailComposeViewController *cvc = [[MFMailComposeViewController alloc] init];
        cvc.mailComposeDelegate = self;

       [cvc addAttachmentData:data mimeType:@"image/jpeg" fileName:[NSString stringWithFormat:@"YOUR_IMAGE.png"]];  

        [self presentModalViewController:cvc animated:YES];

    }

- Himanshu Joshi

0

发送MMS

- (UIImage *) imageFromViewIniOS7
{
UIImage* image = nil;

UIGraphicsBeginImageContext(contentScrollview.contentSize);
{
    CGPoint savedContentOffset = contentScrollview.contentOffset;
    CGRect savedFrame = contentScrollview.frame;

    contentScrollview.contentOffset = CGPointZero;
    contentScrollview.frame = CGRectMake(0, 0, contentScrollview.contentSize.width, contentScrollview.contentSize.height);
    if ([[NSString versionofiOS] intValue]>=7)
    {
        [contentScrollview drawViewHierarchyInRect:contentScrollview.bounds afterScreenUpdates:YES];

    }
    else
    {
        [contentScrollview.layer renderInContext: UIGraphicsGetCurrentContext()];

    }
    image = UIGraphicsGetImageFromCurrentImageContext();

    contentScrollview.contentOffset = savedContentOffset;
    contentScrollview.frame = savedFrame;
}
UIGraphicsEndImageContext();


return image;
}
-(void)buttonAction
{
MFMessageComposeViewController *picker = [[MFMessageComposeViewController alloc] init];
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard]; 
pasteboard.persistent = YES;
pasteboard.image = [self imageFromViewIniOS7];

NSString *phoneToCall = @"sms:";
NSString *phoneToCallEncoded = [phoneToCall stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
NSURL *url = [[NSURL alloc] initWithString:phoneToCallEncoded];
[[UIApplication sharedApplication] openURL:url];    

if([MFMessageComposeViewController canSendText]) {
NSMutableString *emailBody = [[NSMutableString alloc] initWithString:@"Your Email Body"];
picker.messageComposeDelegate = self;
picker.recipients = [NSArray arrayWithObject:@"123456789"];
[picker setBody:emailBody];// your recipient number or self for testing
picker.body = emailBody;
NSLog(@"Picker -- %@",picker.body);
[self presentModalViewController:picker animated:YES];
NSLog(@"SMS fired");
}
}

- Charan Giri

谢谢您。是否可以不需要粘贴，而只需在短信中自动包含图片？ - Kreutzer

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- iNoob · Accepted Answer

1. 想要截图，需要添加QuartzCore框架，可以使用UIGraphicsBeginImageContextWithOptions方法。

UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0);
[self.myView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *theImage=UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

NSData *theImageData=UIImageJPEGRepresentation(theImage, 1.0 ); //you can use PNG too

2. 要在邮件中添加此图像，请在构建阶段中添加MessageUI框架。并使用此NSData进行附加，类似于以下内容：

//Check if mail can be sent
if ([MFMailComposeViewController canSendMail])
    {
        MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
        mailer.mailComposeDelegate = self;

       // Add NSData you got as screenshot to attachment
       [mailer addAttachmentData:theImageData mimeType:@"image/jpeg" fileName:[NSString stringWithFormat:@"test.jpg"]];  
        [self presentModalViewController:mailer animated:YES];

    }

编辑:

3. 通过短信发送图片

    // Will Work only for iOS 7

    MFMessageComposeViewController* messageComposer = [[MFMessageComposeViewController alloc] init];
     messageComposer.messageComposeDelegate = self; // As mentioned by the OP in comments, we have to set messageComposeDelegate to self.
     messageComposer.recipients = [NSArray arrayWithObject:@"123456789"];

 if([MFMessageComposeViewController canSendText])
  {

    if([MFMessageComposeViewController respondsToSelector:@selector(canSendAttachments)] && [MFMessageComposeViewController canSendAttachments])
    {
        NSString* uti = (NSString*)kUTTypeMessage;
        [messageComposer addAttachmentData:theImageData typeIdentifier:uti filename:@"filename.jpg"];
    }

    [self presentViewController:messageComposer animated:YES completion:nil];
  }

处理来自MFMessageComposeViewController的委托回调

- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result
{

}