本文实例为大家分享了iOS实现多控制器切换效果的具体代码，供大家参考，具体内容如下
主控制器 ,管理控制器 .h文件
//宏
#define kScreenWidth [UIScreen mainScreen].bounds.size.width
#define kScreenHeight [UIScreen mainScreen].bounds.size.height
#import "MYMainViewController.h"
#import "MYFirstViewController.h"
#import "MYSecondViewController.h"
#import "MYThirdViewController.h"
@interface MYMainViewController ()<UIScrollViewDelegate>
//控制器名
@property (nonatomic, strong) NSArray *VcNames;
//选择栏
@property(nonatomic, strong) UIView *clickBar;
//底部容器scrollView
@property (strong, nonatomic) UIScrollView *containerScrollerView;
@end. m 文件
底部scrollView , 用于滑动
@implementation MYMainViewController
- (UIScrollView *)containerScrollerView
{
if (!_containerScrollerView) {
_containerScrollerView = [[UIScrollView alloc]init];
_containerScrollerView.pagingEnabled = YES;
_containerScrollerView.showsVerticalScrollIndicator = NO;
_containerScrollerView.showsHorizontalScrollIndicator = NO;
_containerScrollerView.contentSize = CGSizeMake(kScreenWidth *self.VcNames.count,kScreenHeight);
_containerScrollerView.backgroundColor = [UIColor whiteColor];
_containerScrollerView.delegate = self;
}
return _containerScrollerView;
}初始化顶部选择栏
//三个子控制器
- (NSArray *)VcNames
{
if (!_VcNames) {
_VcNames = @[@"控制器一",@"控制器二",@"控制器三"];
}
return _VcNames;
}
//点击选择栏
- (UIView *)clickBar
{
if (!_clickBar) {
_clickBar = [[UIView alloc]init];
_clickBar.backgroundColor = [UIColor lightGrayColor];
CGFloat width = kScreenWidth / 3;
CGFloat height = 44;
//初始化按钮
for (NSInteger index = 0; index < 3; index++) {
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:self.VcNames[index] forState:UIControlStateNormal];
[button setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
button.frame = (CGRect){width *index,0,width,height};
[button addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
//绑定tag值
button.tag = index;
[_clickBar addSubview:button];
}
}
return _clickBar;
}viewDidLoad
- (void)viewDidLoad {
[super viewDidLoad];
self.edgesForExtendedLayout = 0;
//初始化选择栏
[self initClickBar];
//初始化底部scrollView容器
[self initScrollViewContainer];
//初始化子控制器
[self addChildControllers];
}添加子控制器 , 初始化UI
//按钮选择栏
- (void)initClickBar
{
[self.view addSubview:self.clickBar];
self.clickBar.frame = (CGRect){0,0,[UIScreen mainScreen].bounds.size.width,44};
}
//初始化滑动容器
- (void)initScrollViewContainer
{
[self.view addSubview:self.containerScrollerView];
self.containerScrollerView.frame = CGRectMake(0,44,kScreenWidth, kScreenHeight );
}
//添加子控制器
- (void)addChildControllers
{
//为了方便直观 , 在此处设置背景色 (实际开发中,不能在这里设置 , 原因是这里只要调用到了控制器的view属性 , 该控制器将会执行viewDidLoad方法 , 相当于直接一开始就将三个控制器的所有UI和网络请求全加载完了 , 负荷会相当重)
MYFirstViewController *firstVc = [[MYFirstViewController alloc]init];
firstVc.view.backgroundColor = [UIColor redColor];
[self addChildViewController:firstVc];
MYSecondViewController *secondVc = [[MYSecondViewController alloc]init];
secondVc.view.backgroundColor = [UIColor blueColor];
[self addChildViewController:secondVc];
MYThirdViewController *thirdVc = [[MYThirdViewController alloc]init];
thirdVc.view.backgroundColor = [UIColor yellowColor];
[self addChildViewController:thirdVc];
//默认展示第一个子控制器
[self scrollViewDidEndDecelerating:self.containerScrollerView];
}按钮点击事件实现 , 代理方法实现
//选择栏按钮点击事件
- (void)buttonClick:(UIButton *)button
{
[self.containerScrollerView setContentOffset:CGPointMake(button.tag *kScreenWidth, 0) animated:YES];
}
//滑动减速时调用
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
//获取contentOffset
CGPoint currentOffset = scrollView.contentOffset;
NSInteger page = currentOffset.x / kScreenWidth;
//取出对应控制器
UIViewController *viewController = self.childViewControllers[ page ];
//添加到scrollView容器
// if (![viewController isViewLoaded]) {
[self.containerScrollerView addSubview:viewController.view];
viewController.view.frame = CGRectMake(page *kScreenWidth, 0,kScreenWidth, kScreenHeight);
// }
}目录
效果
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
