Question

UISegmentedControl与图像有问题。当我将带有文字的图像放在段中时，tintcolor绘制我的图像和文本。对它有任何帮助吗？

在细分中设置UIImage

UIImage *tmp = [UIImage imageNamed:@"UISegmentedControl-active"];
    UIImage *imageWithText = [UIImage imageFromImage:tmp string:@"20" color:[UIColor whiteColor]];
    [self.segmentedControl setImage:imageWithText forSegmentAtIndex:0];

imageFromImage代码：

+ (id) imageFromImage:(UIImage*)image string:(NSString*)string color:(UIColor*)color
{
    UIFont *font = [UIFont systemFontOfSize:16.0];
    CGSize expectedTextSize = [string sizeWithAttributes:@{NSFontAttributeName: font}];
    int width = image.size.width + 5;
    int height = MAX(expectedTextSize.height, image.size.width);
    CGSize size = CGSizeMake((float)width, (float)height);
    UIGraphicsBeginImageContextWithOptions(size, NO, 0);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetFillColorWithColor(context, color.CGColor);
    int fontTopPosition = (height - expectedTextSize.height) / 2;
    CGPoint textPoint = CGPointMake(width + 5, fontTopPosition);


    // Images upside down so flip them
    //CGAffineTransform flipVertical = CGAffineTransformMake(1, 0, 0, -1, 0, size.height);
    //CGContextConcatCTM(context, flipVertical);
    CGContextDrawImage(context, (CGRect){ {0, (height - image.size.height) / 2}, {image.size.width, image.size.height} }, [image CGImage]);
    [string drawAtPoint:textPoint withAttributes:@{NSFontAttributeName: font}];
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage;
}

图像变为蓝色（默认tintcolor）。

无论如何，如果有人知道如何使用圆形（非圆形）段（按钮）进行分段控制，请提供解决方案。

iOS UISegmentedControl，图像与色调重叠

0 个答案: