iPhone更改标签
答
假设你已经设置你的标签,并在你的接口中定义的索引,以目前的标签,你可以做这样的事情:
NSArray *labels = [NSArray arrayWithObjects:label1, label2, label3, nil];
int currentLabel = 0;
-(void)onButtonPress:(id)sender {
[[labels objectAtIndex:currentLabel++] removeFromSuperview];
if (currentLabel == [labels count])
currentLabel = 0;
[self addSubview:[labels objectAtIndex:currentLabel]];
}