Question

我有裁剪的图像＆amp;我在ui上显示它。当我向其添加帧时，图像大小会改变。例如，如果图像尺寸是200 * 50＆amp;当我将另一个图像作为一个帧添加时，新图像变为相等的高度＆amp;帧图像的宽度。我怎样才能得到解决方案？

这是我的代码：

-(void)addFrames:(int)count
{
    float scale ;
    UIImage *borderImage;

    if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] == YES && [[UIScreen mainScreen] scale] == 2.00)
    {
        // RETINA DISPLAY
        scale = 2.0;
    }
    else
    {
        // non - retina display
        scale = 1.0;
    }
    if(count==1)
    {
         borderImage = [UIImage imageNamed:@""];

    }
    else if(count==2)
    {
         borderImage = [UIImage imageNamed:@"borderImage1.png"];

    }
    else if(count==3)
    {
        borderImage = [UIImage imageNamed:@"borderImage2.png"];

    }
    else if(count==4)
    {
        borderImage =[UIImage imageNamed:@"borderImage3.png"];

    }
    else if(count==5)
    {
        borderImage = [UIImage imageNamed:@"borderImage4.png"];


    }

    UIImage *bottomImage = self.mainImage; //background image
    UIImage *image       = borderImage; //foreground image
    CGSize newSize = CGSizeMake(self.img_background.frame.size.width, self.img_background.frame.size.height);
    UIGraphicsBeginImageContext( newSize );

    // Use existing opacity as is
    [bottomImage drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
    // Apply supplied opacity if applicable
    [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height) blendMode:kCGBlendModeNormal alpha:0.8];
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();//
    self.img_background.image=newImage;
    framedImage=newImage;

}

我希望新的框架图像与添加框架前的尺寸相同？

Answer 1

你是那个说：

[bottomImage drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];

拉伸图片以填充此矩形，因此newSize.width为newSize.height。如果那不是你想要的，那么就不要这样做。它绘制的地方是你告诉它以你告诉它绘制的尺寸绘制的。

添加帧时图像会变得拉长？

1 个答案: