iOS實現多控制器切換效果
本文實例為大傢分享瞭iOS實現多控制器切換效果的具體代碼,供大傢參考,具體內容如下
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; //選擇欄 @property(nonatomic, strong) UIView *clickBar; //底部容器scrollView @property (strong, nonatomic) UIScrollView *containerScrollerView; @end
. m 文件
底部scrollView , 用於滑動
@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; }
初始化頂部選擇欄
//三個子控制器 - (NSArray *)VcNames { if (!_VcNames) { _VcNames = @[@"控制器一",@"控制器二",@"控制器三"]; } return _VcNames; } //點擊選擇欄 - (UIView *)clickBar { if (!_clickBar) { _clickBar = [[UIView alloc]init]; _clickBar.backgroundColor = [UIColor lightGrayColor]; CGFloat width = kScreenWidth / 3; CGFloat height = 44; //初始化按鈕 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]; //綁定tag值 button.tag = index; [_clickBar addSubview:button]; } } return _clickBar; }
viewDidLoad
- (void)viewDidLoad { [super viewDidLoad]; self.edgesForExtendedLayout = 0; //初始化選擇欄 [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
//按鈕選擇欄 - (void)initClickBar { [self.view addSubview:self.clickBar]; self.clickBar.frame = (CGRect){0,0,[UIScreen mainScreen].bounds.size.width,44}; } //初始化滑動容器 - (void)initScrollViewContainer { [self.view addSubview:self.containerScrollerView]; self.containerScrollerView.frame = CGRectMake(0,44,kScreenWidth, kScreenHeight ); } //添加子控制器 - (void)addChildControllers { //為瞭方便直觀 , 在此處設置背景色 (實際開發中,不能在這裡設置 , 原因是這裡隻要調用到瞭控制器的view屬性 , 該控制器將會執行viewDidLoad方法 , 相當於直接一開始就將三個控制器的所有UI和網絡請求全加載完瞭 , 負荷會相當重) 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]; //默認展示第一個子控制器 [self scrollViewDidEndDecelerating:self.containerScrollerView]; }
按鈕點擊事件實現 , 代理方法實現
//選擇欄按鈕點擊事件 - (void)buttonClick:(UIButton *)button { [self.containerScrollerView setContentOffset:CGPointMake(button.tag *kScreenWidth, 0) animated:YES]; } //滑動減速時調用 - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { //獲取contentOffset CGPoint currentOffset = scrollView.contentOffset; NSInteger page = currentOffset.x / kScreenWidth; //取出對應控制器 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); // } }
目錄
效果
以上就是本文的全部內容,希望對大傢的學習有所幫助,也希望大傢多多支持WalkonNet。