相关疑难解决方法(0)

我有自己的子类UIButton.我添加UIImageView它并添加图像.我想用浅色涂在图像上,但它不起作用.

到目前为止,我有:

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {

        self.backgroundColor = [UIColor clearColor];
        self.clipsToBounds = YES;

        self.circleView = [[UIView alloc]init];
        self.circleView.backgroundColor = [UIColor whiteColor];
        self.circleView.layer.borderColor = [[Color getGraySeparatorColor]CGColor];
        self.circleView.layer.borderWidth = 1;
        self.circleView.userInteractionEnabled = NO;
        self.circleView.translatesAutoresizingMaskIntoConstraints = NO;
        [self addSubview:self.circleView];

        self.iconView = [[UIImageView alloc]init];
        [self.iconView setContentMode:UIViewContentModeScaleAspectFit];
        UIImage * image = [UIImage imageNamed:@"more"];
        [image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
        self.iconView.image = image;
        self.iconView.translatesAutoresizingMaskIntoConstraints = NO;
        [self.circleView addSubview:self.iconView];
        ...

并在选择:

- (void) setSelected:(BOOL)selected
{
    if (selected) {
        [self.iconView setTintColor:[UIColor redColor]]; …

我用图像创建了一个名为"button"的UIButton实例[UIButton setImage:forState:].button.frame大于图像的大小.

现在我想缩小此按钮的图像.我试图改变button.imageView.frame,button.imageView.bounds和button.imageView.contentMode,但都显得无效.

任何人都可以帮助我缩放图像UIButton视图吗？

我创建了UIButton这样的:

UIButton *button = [[UIButton alloc] init];
[button setImage:image forState:UIControlStateNormal];

我试图像这样缩放图像:

button.imageView.contentMode = UIViewContentModeScaleAspectFit;
button.imageView.bounds = CGRectMake(0, 0, 70, 70);

还有这个:

button.imageView.contentMode = UIViewContentModeScaleAspectFit;
button.imageView.frame = CGRectMake(0, 0, 70, 70);