Question

我想拍摄包含UIKit和相机元素的应用程序的屏幕截图，实际上我的应用程序是Iphone中的室内装饰应用程序。所以要求就是我们在相机上装饰家具时我们会截取包含UIKit和Camera元素的截图。

Answer 1

// Delegate Function of UIImagePicker
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{

    UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];

    CGSize imageSize = [[UIScreen mainScreen] bounds].size;
    if (NULL != UIGraphicsBeginImageContextWithOptions)
        UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0);
    else
        UIGraphicsBeginImageContext(imageSize);

    CGContextRef context = UIGraphicsGetCurrentContext();

    // Draw the image returned by the camera sample buffer into the context.
    // Draw it into the same sized rectangle as the view that is displayed on the screen.

    float menubarUIOffset = 44.0;
    UIGraphicsPushContext(context);
    [image drawInRect:CGRectMake(0, 0, imageSize.width, imageSize.height-menubarUIOffset)];
    UIGraphicsPopContext();

    // Render the camera overlay view into the graphic context that we created above.
    [cameraOverlayVCObject cameraOverlayVCObject.view inContext:context];

    // Retrieve the screenshot image containing both the camera content and the overlay view
    UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();

    // here is that final Image I am storing into Saved Photo Albums/ Library
    UIImageWriteToSavedPhotosAlbum(screenshot, nil, nil, nil);
    UIGraphicsEndImageContext();

    // I dont want my Camera to be Closed
    //[self dismissModalViewControllerAnimated:YES];
    self.view.hidden = NO;
}

// now got Picture from Camera need to Render Context on it here is Function
- (void)renderView:(UIView*)view inContext:(CGContextRef)context
{
    // -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, [view center].x, [view center].y);
    // Apply the window's transform about the anchor point
    CGContextConcatCTM(context, [view transform]);
    // Offset by the portion of the bounds left of and above the anchor point
    CGContextTranslateCTM(context,
                          -[view bounds].size.width * [[view layer] anchorPoint].x,
                          -[view bounds].size.height * [[view layer] anchorPoint].y);

    // Render the layer hierarchy to the current context
    [[view layer] renderInContext:context];

    // Restore the context
    CGContextRestoreGState(context);
    [appDelegate.cameraPicker dismissModalViewControllerAnimated:YES];
}

任何事情都无法理解，随意提问

Answer 2

使用此，

UIGraphicsBeginImageContext(webview.frame.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);

这样您就可以捕获应用的屏幕截图，并将其保存在iPhone中的照片中。

我的应用程序的屏幕截图，包含UIKit和Camera

2 个答案: