UIButton图像调整大小/缩放以适应

Question

我有一个非常有线的问题,我不知道如何解决它.我正在设置UIButtons框架的动画,当我为它设置动画时,我希望按钮中的图像缩放到与按钮相同的大小.它可以在我的iPhone模拟器上无需任何操作.但是当我在iPad模拟器上运行它时,它不会改变图像大小.我在几个地方添加了[[gissaImg1 imageView] setContentMode:UIViewContentModeScaleToFill]代码,但它没有帮助.

有谁知道什么是错的,以及如何解决这个问题？

//Code to set the image
UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"%@_small", 
                                              [[itemsForRound objectAtIndex:[[guessItems objectAtIndex:0] intValue]] valueForKey:@"Name"]]];

[self.gissaImg1 setImage:image forState:UIControlStateNormal];
[self.gissaImg1 setImage:image forState:UIControlStateHighlighted];

//Code to animate button
CGRect animateToSpot = (isIphone) ? CGRectMake(0, 0, 480, 320) : CGRectMake(0, 0, 1024, 768);
    [self performSelector:@selector(PlayCorrectSound:) withObject:nil afterDelay:1];
    [[gissaImg1 imageView] setContentMode:UIViewContentModeScaleToFill];
    [UIView animateWithDuration:1.5 delay:0 options:(UIViewAnimationOptionAllowUserInteraction | UIViewAnimationCurveLinear) animations:^{
        switch (index) {
            case 0:
                [[gissaImg1 imageView] setContentMode:UIViewContentModeScaleToFill];
                [self.gissaImg1 setFrame:animateToSpot];
                [self.view bringSubviewToFront:gissaImg1];
                break;
.......

Answer 1

尝试setBackgroundImage代替setImage,并对图像不做任何操作.(resize或setContentMode)希望这会有所帮助