UIActionsheetを呼び出して表示するActionメソッドがあり、そこからボタンを選択してビューのスクリーンショットを撮り、Mailcomposerを使用して電子メールを生成したいと思います。
uiactionsheetを呼び出すIBActionメソッドは完全に機能しています。ただし、ボタンを押してスナップショットを撮ることはできません。何か助けはありますか?
これが私のコードです
CGSize imageSize = [[UIScreen mainScreen] bounds].size;
if (NULL != UIGraphicsBeginImageContextWithOptions)
UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0);
else
UIGraphicsBeginImageContext(imageSize);
CGContextRef context = UIGraphicsGetCurrentContext();
// Iterate over every window from back to front
for (UIWindow *window in [[UIApplication sharedApplication] windows])
{
if (![window respondsToSelector:@selector(screen)] || [window screen] == [UIScreen mainScreen])
{
// -renderInContext: renders in the coordinate space of the layer,
// so we must first apply the layer's geometry to the graphics context
CGContextSaveGState(context);
// Center the context around the window's anchor point
CGContextTranslateCTM(context, [window center].x, [window center].y);
// Apply the window's transform about the anchor point
CGContextConcatCTM(context, [window transform]);
// Offset by the portion of the bounds left of and above the anchor point
CGContextTranslateCTM(context,
-[window bounds].size.width * [[window layer] anchorPoint].x,
-[window bounds].size.height * [[window layer] anchorPoint].y);
// Render the layer hierarchy to the current context
[[window layer] renderInContext:context];
// Restore the context
CGContextRestoreGState(context);
}
}
// Retrieve the screenshot image
UIImage *imageForEmail = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
// return imageForEmail;
// UIImageWriteToSavedPhotosAlbum(imageForEmail, nil, nil, nil);
MFMailComposeViewController *mailController = [[MFMailComposeViewController alloc] init];
mailController.mailComposeDelegate = self;
[mailController setSubject:@"Screenshot"];
NSData *imageDataForEmail = UIImageJPEGRepresentation(imageForEmail, 1.0);
[mailController addAttachmentData:imageDataForEmail mimeType:@"image/jpeg" fileName:@"ABC.jpg"];
[self presentViewController:mailController animated:YES completion:NULL];
}