项目实战 网易彩票2
一 竞技场栏目实现
- 自定义控制器的view
- (void)loadView
{
UIImageView *bgV = [[UIImageView alloc] initWithFrame:XMGKeyWindow.bounds];
bgV.image = [UIImage imageNamed:@"NLArenaBackground"];
// 一定要运行用户交互
bgV.userInteractionEnabled = YES;
self.view = bgV;
}- 导航条背景图片XMGArenaNavController
+ (void)initialize
{
// 设置导航条背景图片
UINavigationBar *bar = [UINavigationBar appearanceWhenContainedIn:self, nil];
UIImage *image = [UIImage imageNamed:@"NLArenaNavBar64"];
image =[image stretchableImageWithLeftCapWidth:image.size.width * 0.5 topCapHeight:image.size.height * 0.5];
[bar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
}- 设置XMGArenaViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 设置导航条的titleView内容
UISegmentedControl *segContontrol = [[UISegmentedControl alloc] initWithItems:@[@"足球",@"篮球"]];
// 设置UISegmentedControl选中的图片
[segContontrol setBackgroundImage:[UIImage imageNamed:@"CPArenaSegmentSelectedBG"] forState:UIControlStateSelected barMetrics:UIBarMetricsDefault];
// 正常的图片
[segContontrol setBackgroundImage:[UIImage imageNamed:@"CPArenaSegmentBG"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[segContontrol setTintColor:[UIColor colorWithRed:0 green:142/255.0 blue:143/255.0 alpha:1]];
// 设置选中的文字颜色
[segContontrol setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor]} forState:UIControlStateSelected];
// 默认选中第一个
segContontrol.selectedSegmentIndex = 0;
self.navigationItem.titleView = segContontrol;
}
二 我的彩票栏目实现
- (void)viewDidLoad { // 控制器 view 加载完
[super viewDidLoad];
// 获取按钮的背景图片
UIImage *image = _loginBtn.currentBackgroundImage;
image = [image stretchableImageWithLeftCapWidth:image.size.width * 0.5 topCapHeight:image.size.height * 0.5];
[_loginBtn setBackgroundImage:image forState:UIControlStateNormal];
}
// 设置导航条的左边按钮
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
[btn setTitle:@"客服" forState:UIControlStateNormal];
[btn setImage:[UIImage imageNamed:@"FBMM_Barbutton"] forState:UIControlStateNormal];
// 根据按钮的文字和图片，自动计算按钮尺寸，
[btn sizeToFit];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:btn];
// 设置导航条右边的按钮
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageWithOriginRenderingName:@"Mylottery_config"] style:UIBarButtonItemStyleBordered target:self action:@selector(setting)];三 发现栏目实现
tableviewcell
- 设置 Style：Grouped
- 设置 Content：Staic Cells （静态 cell）
cell 动画设置
// 当一个cell即将显示的时候就会调用这个方法
// 通常这个方法，用来做cell的动画
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
cell.transform = CGAffineTransformMakeTranslation(self.view.width, 0);
[UIView animateWithDuration:0.5 animations:^{
cell.transform = CGAffineTransformIdentity;
}];
}- 每次进入页面都能执行动画
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.tableView reloadData];
}- 点击 cell 跳转控制器XMGBuyViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIButton *titleBtn = [XMGTitleButton buttonWithType:UIButtonTypeCustom];
_titleBtn = titleBtn;
[titleBtn setTitle:@"全部采种" forState:UIControlStateNormal];
[titleBtn setImage:[UIImage imageNamed:@"YellowDownArrow"] forState:UIControlStateNormal];
[titleBtn sizeToFit];
self.navigationItem.titleView = titleBtn;
}- 点击修改文字
- 重写 title 方法
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[_titleBtn setImage:nil forState:UIControlStateNormal];
// [_titleBtn setTitle:@"全部彩种全部彩种" forState:UIControlStateNormal];
// [_titleBtn sizeToFit];
}修改子控件的位置（文字和图片换位置）
方法1
// 设置按钮UIImageView的位置 - (CGRect)imageRectForContentRect:(CGRect)contentRect // 设置按钮内部UILabel的位置 - (CGRect)titleRectForContentRect:(CGRect)contentRect方法2
// 布局子控件
- (void)layoutSubviews
{
[super layoutSubviews];
if (self.titleLabel.x > self.imageView.x) {
// 交换两个子控件的位置
self.titleLabel.x = self.imageView.x;
NSLog(@"titleLabel-%f",self.titleLabel.x);
self.imageView.x = CGRectGetMaxX(self.titleLabel.frame);
NSLog(@"imageView-%f",self.imageView.x);
}
}- 重写方法，添加额外功能
// 思想：如果以后系统自带的功能不满足需求，就重写这个方法，添加额外的功能，一定要记得还原之前的功能
- (void)setTitle:(NSString *)title forState:(UIControlState)state
{
[super setTitle:title forState:state];
[self sizeToFit];
}
- (void)setImage:(UIImage *)image forState:(UIControlState)state
{
[super setImage:image forState:state];
[self sizeToFit];
}隐藏底部条
- 只能隐藏系统的底部条，不能隐藏自定义条
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
// 移除系统tabBar上自带的按钮
for (UIView *childView in self.tabBar.subviews) {
if (![childView isKindOfClass:[XMGTabBar class]]) {
[childView removeFromSuperview];
}
}
}四 设置返回按钮
- 统一设置返回 XMGNavigationController
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
// viewController:栈顶控制器，导航条的内容是由栈顶控制器
// 设置导航条左边按钮,非根控制器才需要
if (self.childViewControllers.count != 0) { // 非根控制器
viewController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageWithOriginRenderingName:@"NavBack"] style:UIBarButtonItemStyleBordered target:self action:@selector(back)];
}
[super pushViewController:viewController animated:animated];
}- (void)back
{
[self popViewControllerAnimated:YES];
}- 滑动手势，有滑动返回功能
- 清掉代理可以清除滑动返回功能
- (void)viewDidLoad {
[super viewDidLoad];
// 前提条件，覆盖了系统的返回按钮，就不会有滑动返回功能。
_popDelegate = self.interactivePopGestureRecognizer.delegate; // 记录代理
self.delegate = self;
}#pragma mark - UINavigationControllerDelegate
// 监听什么时候回到跟控制器
- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
if (viewController == self.childViewControllers[0]) { // 根控制器
self.interactivePopGestureRecognizer.delegate = _popDelegate;
}else{
// 实现导航控制器的滑动返回
self.interactivePopGestureRecognizer.delegate = nil;
}
NSLog(@"%@",viewController);
}- 简单实现滑动返回功能（不常用）
+ (void)initialize
{
…… ……
// 统一设置导航条按钮的颜色
[bar setTintColor:[UIColor whiteColor]];
// 获取UIBarButtonItem
UIBarButtonItem *item = [UIBarButtonItem appearanceWhenContainedIn:self, nil];
// 设置导航条返回按钮的文字的位置
[item setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -64) forBarMetrics:UIBarMetricsDefault];
}
五 滑动返回全屏实现
默认系统滑动功能只能滑动左边边缘
获取成员变量，知道属性名，怎么通过运行时机制获取属性值？
- 首先得要获取属性的名，通过KVC获取值
- 获取target，需要使用运行时机制，遍历出类里面所有属性名
- 利用运行时获取属性名，只能获取当前类下的所有属性名，并不能获取它的子类或者父类。
class_copyIvarList(<__unsafe_unretained Class cls>, <unsigned int *outCount>)
- copyIvarList:获取成员属性列表
- Class:获取哪个类下面的属性
- outCount:这个类有多少个成员属性，成员属性的总数
- (void)viewDidLoad {
[super viewDidLoad];
// 系统的滑动手势触发的时候，会调用Target的action，去做滑动返回的事情(action)，
// 获取系统滑动返回的target和action
UIScreenEdgePanGestureRecognizer *gesture = self.interactivePopGestureRecognizer;
NSArray *targets = [gesture valueForKeyPath:@"_targets"];
id gestureRecognizer = targets[0];
id target = [gestureRecognizer valueForKeyPath:@"_target"];
self.interactivePopGestureRecognizer.enabled = NO;
// 借用系统的滑动手势的功能，当触发自己的滑动手势的时候，调用系统的滑动返回功能
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:target action:@selector(handleNavigationTransition:)];
pan.delegate = self;
[self.view addGestureRecognizer:pan];
}// 如果返回no，表示不触发这个手势
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
// 只有非根控制器才能拥有滑动返回功能
return self.childViewControllers.count != 1;
}六 引导页设置
- 新特性业务
- 先判断当前有没有最新版本，有就进入引导页提示
// 最新的版本保存到info.plist文件
NSString *curVersion = [NSBundle mainBundle].infoDictionary[@"CFBundleShortVersionString"];
// 获取上一次保存的最新版本号
NSString *lastVersion = [[NSUserDefaults standardUserDefaults] objectForKey:"version"];
UIViewController *rootVc;
if ([curVersion isEqualToString:lastVersion]) { // 相等
// 没新版本，进入主框架界面
// 创建tabBarVc
rootVc = [[XMGTabBarController alloc] init];
}else{ // 表示有最新的版本号，进入新特性界面
rootVc = [[UIViewController alloc] init];
rootVc.view.backgroundColor = [UIColor greenColor];
// 保存当前的最新的版本号
[[NSUserDefaults standardUserDefaults] setObject:curVersion forKey:"version"];
}
UICollectionView实现新特性页面
- 1.必须要设置布局参数
- 2.注册cell
- 3.自定义cell
重写 init 方法
- (instancetype)init
{
// 创建一个流水布局
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
// 设置cell的尺寸
layout.itemSize = [UIScreen mainScreen].bounds.size;
// 设置滚动的方向
layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
// 行间距
layout.minimumLineSpacing = 0;
// 设置cell之间的间距
layout.minimumInteritemSpacing = 0;
// 组间距
// layout.sectionInset = UIEdgeInsetsMake(100, 20, 0, 30);
return [super initWithCollectionViewLayout:layout];
}static NSString *ID = @"cell";
- (void)viewDidLoad {
[super viewDidLoad];
// 在UICollectionViewController中self.view != self.collectionView
// 注册cell
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:ID];
}
- Items对应cell
// 返回有多少个cell
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return 12;
}// 返回每一个cell长什么样
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
// 从缓存池里取
// UICollectionViewCell 没有UIImageView
XMGNewFeatureCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:ID forIndexPath:indexPath];
NSString *imageName = [NSString stringWithFormat:@"guide%ldBackground",indexPath.item + 1];
cell.image = [UIImage imageNamed:imageName];
return cell;
}- 初始化
- (void)setUp
{
self.collectionView.bounces = NO;
self.collectionView.showsHorizontalScrollIndicator = NO;
self.collectionView.pagingEnabled = YES;
self.collectionView.delegate = self;
}- 减速完成的时候调用
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
// 移动子控件的位置，并且做动画
NSLog(@"%f",scrollView.contentOffset.x);
// 获取scrollView滚动的X
CGFloat offsetX = scrollView.contentOffset.x;
// 计算偏移量的差值
CGFloat delta = offsetX - _lastOffsetX;
// 平移子控件
_guide.x += 2 * delta;
[UIView animateWithDuration:0.25 animations:^{
_guide.x -= delta;
}];
// 计算页数
int page = offsetX / scrollView.width + 1;
// 切换子控件的显示
NSString *imageName = [NSString stringWithFormat:@"guide%d",page];
_guide.image = [UIImage imageNamed:imageName];
_lastOffsetX = offsetX;
}
- 添加子控件
- (void)setUpChildViewLayout
{
// guide
UIImageView *guide = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"guide1"]];
_guide = guide;
guide.x += 50;
[self.collectionView addSubview:guide];
// largerText
UIImageView *largerText = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"guideLargeText1"]];
largerText.center = CGPointMake(self.view.width * 0.5, self.view.height * 0.7);
[self.collectionView addSubview:largerText];
// smallText
UIImageView *smallText = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"guideSmallText1"]];
smallText.center = CGPointMake(self.view.width * 0.5, self.view.height * 0.8);
[self.collectionView addSubview:smallText];
// guideLine
UIImageView *guideLine = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"guideLine"]];
guideLine.x -= 150;
[self.collectionView addSubview:guideLine];
}
- 自定义 cell样式
- (void)setImage:(UIImage *)image
{
_image = image;
self.imageView.image = image;
}
- (UIImageView *)imageView
{
if (_imageView == nil) {
UIImageView *imageV = [[UIImageView alloc] initWithFrame:self.bounds];
[self.contentView addSubview:imageV];
_imageView = imageV;
}
return _imageView;
}