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答
你可以做到这一点,
UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height);
[button setBackgroundImage:buttonImage forState:UIControlStateNormal];
[button setBackgroundImage:highlightImage forState:UIControlStateHighlighted];
CGFloat heightDifference = buttonImage.size.height - self.tabBar.frame.size.height;
if (heightDifference < 0)
button.center = self.tabBar.center;
else
{
CGPoint center = self.tabBar.center;
center.y = center.y - heightDifference/2.0;
button.center = center;
}
[self.view addSubview:button];
请查看以下链接: http://idevrecipes.com/2010/12/16/raised-center-tab-bar-button/
您将在https://github.com/boctor/idev-recipes/tree/master/RaisedCenterTabBar
爽获得完整的源代码。会给一个尝试。谢谢。 – JasonGenX 2012-08-14 19:51:21
@ RM1970:谢谢您的评论。祝你好运 :) – 2012-08-14 19:52:14