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Iphone Sdk 将 2 张图像重叠为一张

发布于 2024-09-18 08:21:21 字数 76 浏览 2 评论 0原文

我有 2 个图像..如何重叠它们以便获得 1 个 UIImage？将图像 2 的位置设置在图像 1 的 X、Y 处

谢谢！

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一刻暧昧 2024-09-25 08:21:21

Zapacila，您找到问题的答案了吗？你可以这样做：

#define imageWidth 40
#define imageHeight 60

UIImage *image1 = [UIImage imageNamed:@"firstimage.png"];
UIImage *image2 = [UIImage imageNamed: @"secondimage.png"];

CGSize itemSize = CGSizeMake(imageWidth, imageHeight);

UIGraphicsBeginImageContext(itemSize);

CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
[image1 drawInRect:imageRect];
[image2 drawInRect:imageRect];

UIImage *overlappedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

UIImageoverlapedImage 是一个新图像，其中包含重叠的初始图像。老实说，我不知道这是否是实现这一结果的最佳方法，但我知道它绝对有效。

如果同时您找到了更有效的解决方案，请告诉我！

Zapacila, have you found an answer to your question? You could do it like this:

#define imageWidth 40
#define imageHeight 60

UIImage *image1 = [UIImage imageNamed:@"firstimage.png"];
UIImage *image2 = [UIImage imageNamed: @"secondimage.png"];

CGSize itemSize = CGSizeMake(imageWidth, imageHeight);

UIGraphicsBeginImageContext(itemSize);

CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
[image1 drawInRect:imageRect];
[image2 drawInRect:imageRect];

UIImage *overlappedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

The UIImage overlappedImage is a new image which contains the initial ones, overlapped. To be honest, I don't know if this is the best method to achieve this result, but I know it definitely works.

If in the meantime you found a more efficient solution, let me know!

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分开我的手 2024-09-25 08:21:21

为什么不直接有一个 UIView 并将两个图像作为子视图放入其中？

UIImageView *image = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"myimage.png"]];
UIView *imagesView = [[UIView alloc] initWithFrame:image.frame];
[imagesView addSubview:image];

UIImageView *imageToOverlay = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"myimagetooverlay.png"]];
[imageToOverlay setCenter:CGPointMake(10,10)];
[imagesView addSubview:imageToOverlay];

[self.view addSubview:imagesView];

Why don't you just have a UIView and put the two images into that as subviews?

UIImageView *image = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"myimage.png"]];
UIView *imagesView = [[UIView alloc] initWithFrame:image.frame];
[imagesView addSubview:image];

UIImageView *imageToOverlay = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"myimagetooverlay.png"]];
[imageToOverlay setCenter:CGPointMake(10,10)];
[imagesView addSubview:imageToOverlay];

[self.view addSubview:imagesView];

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