两个按钮实现点击切换，切换后加载具体的控件及实现功能。通过UIView 来实现滑块的效果。
//定义两个变量
@interface ForumsViewController (){
UIButton *_oldBtn;
}
//滑块
@property (nonatomic,strong)UIView *slider;
@end
- (void)createTopView{
UIView *topView = [[UIViewalloc]initWithFrame:CGRectMake(0,0, F_DEVICE_W,64)];
topView.backgroundColor = [UIColorblueColor];
[self.viewaddSubview:topView];
NSArray *itemArray =@[@"社交",@"发现"];
//滑块
self.slider = [[UIViewalloc]initWithFrame:CGRectMake(F_DEVICE_W / 3.f, 22,F_DEVICE_W / 6.f,35)];
self.slider.backgroundColor = [UIColorwhiteColor];
self.slider.layer.cornerRadius = 5;
self.slider.layer.masksToBounds = YES;
[topView addSubview:self.slider];
for (NSInteger i =0; i < itemArray.count; i++) {
UIButton *btn = [UIButtonbuttonWithType:UIButtonTypeCustom];
btn.frame =CGRectMake(F_DEVICE_W /3.f + i * F_DEVICE_W /6.f, 20,F_DEVICE_W / 6.f ,44);
btn.backgroundColor = [UIColorclearColor];
btn.tag =9998 + i;
if (i ==0) {btn.selected =YES;_oldBtn = btn;}
[btn setTitle:itemArray[i]forState:UIControlStateNormal];
[btn setTitleColor:[UIColorblueColor] forState:UIControlStateSelected];
[btn setTitleColor:[UIColorwhiteColor] forState:UIControlStateNormal];
[btn addTarget:selfaction:@selector(btnClickAction:)forControlEvents:UIControlEventTouchUpInside];
[topView addSubview:btn];
}
}
- (void)btnClickAction:(UIButton *)sender{
if (sender.selected)return;
_oldBtn.selected =NO;//选中的老按钮选中状态直为非选中
sender.selected =YES;
_oldBtn = sender;
__weak typeof(self) bSelf =self;
switch (sender.tag) {
case9998:{
[UIViewanimateWithDuration:0.5animations:^{
bSelf.slider.frame =CGRectMake(F_DEVICE_W /3.f, 22,F_DEVICE_W / 6.f,40);
}];
//此处添加其他事件
break;}
case9999:{
[UIViewanimateWithDuration:0.5animations:^{
bSelf.slider.frame =CGRectMake(F_DEVICE_W *0.5, 22,F_DEVICE_W / 6.f,40);
}];
//此处添加其他事件
break;}
default:
break;
}
}