Question

在我的应用程序中，我有三个不同的图像视图，三个图像视图应该合并为单个uiimage。用于从图库/相机中拾取图像的第一个imageview 帧图像的第二个imageview Overlay图像的第三个imageview（这些放在第一个图像view.my问题！是分享我需要将这三个合并为单个uiimage 在运行它时只显示第二张图像，第三张合并第一张图像没有查看。如果有人知道这个问题，请回答我。谢谢提前这是我的分享代码，请帮助我。

[self.OverLayImgView setAlpha:0.6]; UIImage *FirstImage = ImgView.image;
UIImage *ScndImage=self.FramesAppliedImg.image;
UIImage *ThirdImg=self.OverLayImgView.image;
CGSize firstImagSize=[FirstImage size];
UIGraphicsBeginImageContext(firstImagSize);
[FirstImage drawInRect:CGRectMake(20,20,315,315)];
[ScndImage drawInRect:CGRectMake(0,0,355,355)];
[ThirdImg drawInRect:CGRectMake(20, 20, 315,315)];
UIImage *newImage=UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

Answer 1

试试这个：

一些视图类只使用UIView而不是：

- (UIImage *)stitchedImageWithSize:(CGSize)size
                  borderOffset:(CGFloat)borderOffset
                   borderColor:(UIColor *)borderColor
{

    UIImageView *v = [[UIImageView alloc] initWithFrame:CGRectMake(0.f, 0.f, size.width, size.height)];
    v.backgroundColor = self.backgroundColor;
    v.image = self.image;
    v.contentMode = self.contentMode;

for (NSUInteger i = 0; i < self.subviews.count; i++) {
    id obj = self.self.subviews[i];

    if ([obj isKindOfClass:[V_freeStitchingCell class]]) {
        V_freeStitchingCell *cell = obj;

        CGRect rect = cell.rect_first;

        //make rect with center
        rect.origin.x = cell.center.x - (rect.size.width / 2.f);
        rect.origin.y = cell.center.y - (rect.size.height / 2.f);

        //make rect with scale
        rect.size.width = rect.size.width * size.width / self.frame.size.width;
        rect.size.height = rect.size.height * size.height / self.frame.size.height;
        rect.origin.x = rect.origin.x * size.width / self.frame.size.width;
        rect.origin.y = rect.origin.y * size.height / self.frame.size.height;

        if (cell.pImg_value) {
            UIView *sv = [[UIView alloc] initWithFrame:rect];
            sv.backgroundColor = borderColor;

            CGSize tmpsize = cell.frame.size;
            UIImage *img = [UIImage imageWithImage:cell.pImg_value inRect:CGRectZero size:&tmpsize errMsg:nil];
            UIImageView *vimg = [[UIImageView alloc] initWithFrame:CGRectMake(borderOffset, borderOffset, rect.size.width - (borderOffset * 2), rect.size.height - (borderOffset * 2))];
            vimg.image = img;
            [sv addSubview:vimg];

            [v addSubview:sv];
            sv.transform = cell.transform;
        }
    }
}

    UIGraphicsBeginImageContext(size);
    CGContextRef contxt = UIGraphicsGetCurrentContext();
    [v.layer renderInContext:contxt];
    UIImage *des = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return des;
  }

如何在iOS中将3个不同的图像视图合并为单个uiimage

1 个答案: