iOS 开源一个高度可定制支持各种动画效果,支持单击双击,小红点,支持自定义不规则按钮的tabbar

TYTabbarAnimationDemo

业务需求导致需要做一个tabbar,里面的按钮点击带有动画效果，tabbar中间的按钮凸出，凸出部分可以点击，支持badge 小红点等，为此封装了一个高度可定制的tabbar -> TYTabBar demo下载地址：https://github.com/qqcc1388/TYTabbarAnimationDemo

TYTabBar可以快速实现以下功能

1. 每个Item都有单击，双击事件回调
2. tem可以支持多种动画（帧动画，缩放动画，旋转动画），每个Item都可以单独设置
3. 支持badgeText,支持小红点功能
4. 只需要配置一下，就可以实现不规则按钮效果，并且超出边界仍然有点击效果
5. 支持横竖屏切换

效果图（由于图片资源的问题导致动画切换比较生硬，更改为满足尺寸的资源就好啦）

思路回顾(TYTabBar)

系统的Tabbar功能不算完善，有时候没法完全满足需求，我们这里通过kvc的方式把系统的tabbar替换成我们自己定义的tabbar。

    [self setValue:tabbar forKeyPath:@"tabBar"];

自定义一个TYTabBar继承UITabBar这样就可以继承很多系统TabBar既有很多属性和功能

@interface TYTabBar : UITabBar

初始化配置信息(很重要关系到Item个数，PlusItem的位置)

#define barItemCount                5                               //tabbarItem 个数
#define barItemPlusButtonIndex      2                              //➕按钮的位置  -1表示不存在+按钮  从0开始
#define barItemFontSize             12                              //字体大小
#define barItemNomalTextColor       [UIColor grayColor]             //字体默认颜色
#define barItemSelectedTextColor    [UIColor redColor]              //选中字体颜色
#define barItemSubMargin            3                               //文字和图片的间距

初始化需要TYTabBar中需要展示的按钮并保存起来，并添加点击事件 传入默认第几个tabbarItem默认被选中

-(void)loadItemsWithData:(NSArray<TYBarItemModel *> *)itemModels defaultSelect:(NSInteger)index{
//初始化
NSMutableArray *mutalArr = [NSMutableArray array];
TYAnimationButton *tempItem = nil;
for (int i = 0; i < barItemCount; i++) {
//取出model
TYBarItemModel *model = [itemModels objectAtIndex:i];
TYAnimationButton *button = [[TYAnimationButton alloc] init];
button.images = model.images;
[button setImage:[UIImage imageNamed:model.normalImage] forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:model.selectedImage] forState:UIControlStateSelected];
[button setTitle:model.title forState:UIControlStateNormal];
button.tag = i;
button.titleLabel.font = [UIFont systemFontOfSize:barItemFontSize];
[button setTitleColor:barItemSelectedTextColor forState:UIControlStateSelected];
[button setTitleColor:barItemNomalTextColor forState:UIControlStateNormal];
[button addTarget:self action:@selector(itemClick:) forControlEvents:UIControlEventTouchDown];
button.layoutType = LXButtonLayoutTypeImageTop;
button.subMargin = barItemSubMargin;
button.animationType = model.animationType;
[self addSubview:button];
//第index按钮默认选中
if (i == index) {
tempItem = button;
}
//保存按钮
[mutalArr addObject:button];
}
self.myItems = mutalArr;
//设置默认选中第index个
if (tempItem) {
[self itemClick:tempItem];
}else{
//如果传入的index无效 则默认选中第0个
TYAnimationButton *item = self.myItems.firstObject;
[self itemClick:item];
}
}

在TabBar的layoutSubviews方法中找到对应的系统的TabBarItem并隐藏起来，创建我们自己的Button并占用系统TabBarItem的位置

-(void)layoutSubviews{
[super layoutSubviews];
Class class = NSClassFromString(@"UITabBarButton");
int btnIndex = 0;
//假设这里有5个item
CGFloat width = self.bounds.size.width/barItemCount*1.0;
CGFloat height = self.bounds.size.height;
for (UIView *btn in self.subviews) {//遍历tabbar的子控件
if ([btn isKindOfClass:class]) {
//先隐藏系统的tabbarItem
btn.hidden = YES;
//取出前面保存的按钮
UIButton *item = [self.myItems objectAtIndex:btnIndex];
//设置item的位置
item.frame = CGRectMake(width*btnIndex, 0, width, height);
if (barItemPlusButtonIndex == btnIndex) {  //plusButton位置  具体偏移根据时间情况进行调节
item.frame = CGRectMake(width*btnIndex, -20, width, height+20);
item.subMargin = 10;
}
btnIndex++;
}
}
}

单击 双击事件处理和传递（这里通过代理将信息传递出去realDelegate一定要要实现，涉及到控制器跳转）

-(void)itemClick:(TYAnimationButton *)item{
//双击效果处理
//2次双击之间间隔至少1s
static  NSTimeInterval lastClickTime = 0;
if ([self checkIsDoubleClick:item]) {
NSTimeInterval clickTime = [NSDate timeIntervalSinceReferenceDate];
if (clickTime - lastClickTime > 1) {  //去掉连击的可能性
if (_realDelegate && [_realDelegate respondsToSelector:@selector(tabBar:doubleClick:)]) {
[self.realDelegate tabBar:self doubleClick:item.tag];
}
}
lastClickTime = clickTime;
}
//按钮重复点击没有效果
if (item == _lastItem && self.canRepeatClick) { //可以重复点击
if (!item.isAnimating) { //正在动画什么都不做否则开始动画
[item animationStart];
}
}else if(item != _lastItem){  //不可以重复点击
//先把上次item动画关闭
_lastItem.selected = NO;
[_lastItem animationStop];
//新点击的item动画开启
item.selected = YES;
[item animationStart];
//把按钮的点击状态传到出去 让tabbarController可以切换控制器
if (_realDelegate && [_realDelegate respondsToSelector:@selector(tabBar:clickIndex:)]) {
[self.realDelegate tabBar:self clickIndex:item.tag];
}
_lastItem = item;
}
}
- (BOOL)checkIsDoubleClick:(UIButton *)currentBtn
{
static UIButton *lastBtn = nil;
static NSTimeInterval lastClickTime = 0;
if (lastBtn != currentBtn) {
lastBtn = currentBtn;
lastClickTime = [NSDate timeIntervalSinceReferenceDate];
return NO;
}
NSTimeInterval clickTime = [NSDate timeIntervalSinceReferenceDate];
if (clickTime - lastClickTime > 0.5 ) {
lastClickTime = clickTime;
return NO;
}
lastClickTime = clickTime;
return YES;
}

badgeText 小红点设置（参考JSBadgeView并在源码上做了一点修改） 显示数字 @"2" 不显示内容@""或者nil 显示小红点@"."

-(void)badgeText:(NSString *)text forIndex:(NSInteger)index{
//给指定的badgeText设置角标
if (index < 0 || index >(self.myItems.count - 1)) {
return;
}
TYAnimationButton *item = self.myItems[index];
//设置角标
[item setBadgeText:text];
}

思路回顾(TYAnimationButton)

TYAnimationButton是整个TYTabBar的核心，每一个Item都是一个TYAnimationButton

提供的动画类型

typedef NS_ENUM(NSUInteger, TYBarItemAnimationType) {
TYBarItemAnimationTypeNomal = 0, //系统默认tabar效果
TYBarItemAnimationTypeFrames,    //帧动画(imageView)
TYBarItemAnimationTypeScale,     //缩放动画
TYBarItemAnimationTypeRotate     //旋转动画
};

关于动画提供了2个动画方法 一个开始动画，一个结束动画，如果是帧动画，需要传入动画帧

#pragma mark - 动画
-(void)animationStart{
if (_animationType == TYBarItemAnimationTypeNomal) {  //系统默认不带动画
}else if(_animationType == TYBarItemAnimationTypeFrames){  //帧动画
if (_images) {  //有提供动画图片的才可以动画
if (!self.imageView.isAnimating) {  //没有动画 则开启动画 如果当前正在动画 则什么都不做
[self frameAnimation];
}
}
}else if(_animationType == TYBarItemAnimationTypeScale){  //
[self scaleAnimationRepeatCount:1];
}else if(_animationType == TYBarItemAnimationTypeRotate){
[self rotateAnimation];
}else{
}
}
-(void)animationStop{
if (_animationType == TYBarItemAnimationTypeNomal) {
}else if(_animationType == TYBarItemAnimationTypeFrames){
if (_images) {  //有提供动画图片的才可以动画
if (self.imageView.isAnimating)
{  //正在动画 则开始动画
self.imageView.animationImages = nil;
[self.imageView stopAnimating];
}
}
}else if(_animationType == TYBarItemAnimationTypeScale){
}else if(_animationType == TYBarItemAnimationTypeRotate){
}else{
}
}
-(void)frameAnimation{
//设置动画图片 给button imageView 添加帧动画
UIImageView * imageView = self.imageView;
//设置动画帧
NSMutableArray *mutalImages = [NSMutableArray array];
for (NSString *imageName in self.images) {
[mutalImages addObject:[UIImage imageNamed:imageName]];
}
imageView.animationImages= mutalImages;
//设置动画总时间
imageView.animationDuration = _duration;
//设置重复次数，0表示无限
imageView.animationRepeatCount = 1;
[imageView startAnimating];
}
//缩放动画
- (void)scaleAnimationRepeatCount:(float)repeatCount {
//需要实现的帧动画，这里根据需求自定义
CAKeyframeAnimation *animation = [CAKeyframeAnimation animation];
animation.keyPath = @"transform.scale";
animation.values = @[@1.0,@1.3,@0.9,@1.15,@0.95,@1.02,@1.0];
animation.duration = 1;
animation.repeatCount = repeatCount;
animation.calculationMode = kCAAnimationCubic;
[self.imageView.layer addAnimation:animation forKey:nil];
}
//旋转动画
- (void)rotateAnimation {
// 针对旋转动画，需要将旋转轴向屏幕外侧平移，最大图片宽度的一半
// 否则背景与按钮图片处于同一层次，当按钮图片旋转时，转轴就在背景图上，动画时会有一部分在背景图之下。
// 动画结束后复位
//    CGFloat oldZPosition = self.layer.zPosition;//0
self.layer.zPosition = 65.f / 2;
[UIView animateWithDuration:0.32 delay:0 options:UIViewAnimationOptionCurveEaseIn animations:^{
self.imageView.layer.transform = CATransform3DMakeRotation(M_PI, 0, 1, 0);
} completion:nil];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[UIView animateWithDuration:0.70 delay:0 usingSpringWithDamping:1 initialSpringVelocity:0.2 options:UIViewAnimationOptionCurveEaseOut animations:^{
self.imageView.layer.transform = CATransform3DMakeRotation(2 * M_PI, 0, 1, 0);
} completion:nil];
});
}

给每个TYAnimationButton添加一个badgeView使其具备角标的功能 监听屏幕横竖屏变化并实时修改badgeView的位置

/**
角标x轴方向的偏移 默认15
*/
@property (nonatomic,assign) CGFloat badgeOffsetX;
/**
角标y轴方向的偏移 默认15
*/
@property (nonatomic,assign) CGFloat badgeOffsetY;
/**
角标x轴方向的偏移(横屏状态) 默认15 请根据具体需求微调
*/
@property (nonatomic,assign) CGFloat badgeLandscapeOffsetX;
/**
角标y轴方向的偏移(横屏状态) 默认40 请根据具体需求微调
*/
@property (nonatomic,assign) CGFloat badgeLandscapeOffsetY;
-(void)layoutSubviews{
[super layoutSubviews];
if((self.bounds.size.width !=0 && !self.badgeView) || self.orientation){
//先移除badgeView
[self.badgeView removeFromSuperview];
//重新添加新的badgeView
self.badgeView = [[JSBadgeView alloc] initWithParentView:self alignment:JSBadgeViewAlignmentTopRight];
//设置角标参数
_badgeView.badgeTextFont = [UIFont systemFontOfSize:12];
if (self.orientation == UIDeviceOrientationLandscapeLeft || self.orientation == UIDeviceOrientationLandscapeRight) { //横屏状态
_badgeView.badgePositionAdjustment = CGPointMake(-_badgeLandscapeOffsetX, _badgeLandscapeOffsetY);
}else{  //竖屏状态
_badgeView.badgePositionAdjustment = CGPointMake(-_badgeOffsetX, _badgeOffsetY);
}
_badgeView.badgeStrokeWidth = 0.2;
_badgeView.badgeText  = _badgeText;
//清除旋转状态
self.orientation = UIDeviceOrientationUnknown;
}
}

关于使用

初始化tabbar

-(void)setupTabbar{
TYTabBar *tabbar = [[TYTabBar alloc] init];
self.tyTabbar = tabbar;
self.tyTabbar.realDelegate = self;
//给tabbar设置内容
//准备数据
NSArray *arr = @[@"竞猜", @"赛事", @"发现", @"优惠", @"我的"];                //title
NSArray *animationImageArr = @[self.quizAnimationImages, self.matchAnimationImages, @[], self.discountAnimationImages, self.mineAnimationImages];
NSArray *barImages = @[@[@"quiz_normal", @"quiz_selected"],                //按钮默认图片和选中后图片
@[@"match_normal", @"match_selected"],
@[@"discovery_normal", @"discovery_selected"],
@[@"discount_normal", @"discount_selected"],
@[@"mine_normal", @"mine_selected"],
];
NSArray *anmations = @[@(TYBarItemAnimationTypeFrames),@(TYBarItemAnimationTypeFrames),@(TYBarItemAnimationTypeRotate),@(TYBarItemAnimationTypeFrames),@(TYBarItemAnimationTypeFrames)];
NSMutableArray *datas = [NSMutableArray array];
for (int i = 0;  i < 5; i++) {
//0. 根据需求选择填写对应的内容
//1. 每个按钮都可以单独设置图片 文字 动画效果(暂时只有4种效果)等
//2. 如果点击后不需要帧动画 images可以传nil
//3. 如果所有按钮都是统一动画，AnimationType 默认传一个值就可以了
//4. title为BarItem显示的文字
//5. nomalImage selectdImage 为BarItem选中和非选中的图片 选中和非选中按钮颜色在TYTabBar中配置
TYBarItemModel *model = [[TYBarItemModel alloc] initWithTitle:arr[i] images:animationImageArr[i] normalImage:barImages[i][0] selectedImage:barImages[i][1] AnimationType:[anmations[i] integerValue]];
[datas addObject:model];
}
//初始化tabbar数据
[self.tyTabbar loadItemsWithData:datas defaultSelect:2];
//替换系统的tabbar
[self setValue:tabbar forKeyPath:@"tabBar"];
//如果希望TabbarItem重复点击都有动画效果 则需要设置canRepeatClick= YES 默认为NO
self.tyTabbar.canRepeatClick = YES;
//设置角标
[self.tyTabbar badgeText:@"9" forIndex:0];
[self.tyTabbar badgeText:@"." forIndex:3];
}

初始化控制器

- (void) loadViewControllers {
//这里的title是导航栏的标题
ViewController* homepageVC = [[ViewController alloc] init];
[self setUpOneChildVcWithVc:homepageVC  title:@"竞猜"];
ViewController * classifyVC = [[ViewController alloc] init];
[self setUpOneChildVcWithVc:classifyVC  title:@"赛事"];
ViewController* shoppingCartVC = [[ViewController alloc] init];
[self setUpOneChildVcWithVc:shoppingCartVC  title:@"发现"];
ViewController * searchVC = [[ViewController alloc] init];
[self setUpOneChildVcWithVc:searchVC  title:@"优惠"];
ViewController* personalCenterVC = [[ViewController alloc] init];
[self setUpOneChildVcWithVc:personalCenterVC  title:@"我的"];
}
- (void)setUpOneChildVcWithVc:(UIViewController *)Vc title:(NSString *)title {
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:Vc];
Vc.navigationItem.title = title;
[self addChildViewController:nav];
}

tabbar代理方法使用

-(void)tabBar:(TYTabBar *)tabbar clickIndex:(NSInteger)index{
[self setSelectedIndex:index];
}
-(void)tabBar:(TYTabBar *)tabBar doubleClick:(NSInteger)index{
NSLog(@"第%zi个Item被双击",index);
//根据选中的Inex，拿到对应的控制器然后让控制器刷新数据
UINavigationController *naviVC = (UINavigationController *)self.selectedViewController;
ViewController *dpVc = (ViewController *)naviVC.viewControllers.firstObject;
[dpVc reloadColor];
}

更多详细使用参考demo中代码

版权归tinych,qqcc1388所有，转载请标注转载来源：http://www.cnblogs.com/tinych/p/7421633.html

参考来源：

JSBadgeView https://github.com/JaviSoto/JSBadgeView
CYLTabBarController https://github.com/ChenYilong/CYLTabBarController