CYLTabBarController，一个用于快速集成TabBarController的第三方。
在appdelegate中
@interface AppDelegate ()<UITabBarControllerDelegate,CYLTabBarControllerDelegate>
@property (nonatomic, strong) UITabBarController *tabBarController;
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[SmallOneBtn registerPlusButton]; //添加额外按钮的时候调用
[self setupViewControllers];
[self.window setRootViewController:self.tabBarController];
[self customizeInterface];
return YES;
}
- (void)setupViewControllers {
OneViewController *firstViewController = [[OneViewController alloc] init];
UIViewController *firstNavigationController = [[UINavigationController alloc]
initWithRootViewController:firstViewController];
TwoViewController *secondViewController = [[TwoViewController alloc] init];
UIViewController *secondNavigationController = [[UINavigationController alloc]
initWithRootViewController:secondViewController];
ThreeViewController *threeVC = [[ThreeViewController alloc] init];
UIViewController *threeNavi = [[UINavigationController alloc]
initWithRootViewController:threeVC];
FourViewController *fourVC = [[FourViewController alloc] init];
UIViewController *fourNavi = [[UINavigationController alloc]
initWithRootViewController:fourVC];
CYLTabBarController *tabBarController = [[CYLTabBarController alloc] init];
[self customizeTabBarForController:tabBarController];
[tabBarController setViewControllers:@[
firstNavigationController,
secondNavigationController,threeNavi,fourNavi
]];
self.tabBarController = tabBarController;
self.tabBarController.delegate = self;
}
- (void)customizeTabBarForController:(CYLTabBarController *)tabBarController {
NSDictionary *dict1 = @{
CYLTabBarItemTitle : @"首页",
CYLTabBarItemImage : @"item1",
CYLTabBarItemSelectedImage : @"item1_press",
};
NSDictionary *dict2 = @{
CYLTabBarItemTitle : @"发现",
CYLTabBarItemImage : @"发现",
CYLTabBarItemSelectedImage : @"发现_press",
};
NSDictionary *dict3 = @{
CYLTabBarItemTitle : @"个人中心",
CYLTabBarItemImage : @"item3",
CYLTabBarItemSelectedImage : @"item3_press",
};
NSDictionary *dict4 = @{
CYLTabBarItemTitle : @"设置",
CYLTabBarItemImage : @"item3",
CYLTabBarItemSelectedImage : @"item3_press",
};
NSArray *tabBarItemsAttributes = @[ dict1, dict2, dict3, dict4];
tabBarController.tabBarItemsAttributes = tabBarItemsAttributes;
}
/**
* tabBarItem 的选中和不选中文字属性、背景图片
*/
- (void)customizeInterface {
// 普通状态下的文字属性
NSMutableDictionary *normalAttrs = [NSMutableDictionary dictionary];
normalAttrs[NSForegroundColorAttributeName] = [UIColor grayColor];
// 选中状态下的文字属性
NSMutableDictionary *selectedAttrs = [NSMutableDictionary dictionary];
selectedAttrs[NSForegroundColorAttributeName] = [UIColor redColor];
// 设置文字属性
UITabBarItem *tabBar = [UITabBarItem appearance];
[tabBar setTitleTextAttributes:normalAttrs forState:UIControlStateNormal];
[tabBar setTitleTextAttributes:selectedAttrs forState:UIControlStateSelected];
// 设置背景图片
UITabBar *tabBarAppearance = [UITabBar appearance];
[tabBarAppearance setBackgroundImage:[UIImage imageNamed:@""]];
}
- (void)tabBarController:(UITabBarController *)tabBarController didSelectControl:(UIControl *)control {
UIView *animationView;
// 如果 PlusButton 也添加了点击事件，那么点击 PlusButton 后不会触发该代理方法。
if ([control isKindOfClass:[CYLExternPlusButton class]]) {
UIButton *button = CYLExternPlusButton;
animationView = button.imageView;
} else if ([control isKindOfClass:NSClassFromString(@"UITabBarButton")]) {
for (UIView *subView in control.subviews) {
if ([subView isKindOfClass:NSClassFromString(@"UITabBarSwappableImageView")]) {
animationView = subView;
}
}
}
if ([self cyl_tabBarController].selectedIndex % 2 == 0) {
[self addScaleAnimationOnView:animationView];
} else {
[self addRotateAnimationOnView:animationView];
}
}
//缩放动画
- (void)addScaleAnimationOnView:(UIView *)animationView {
//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.calculationMode = kCAAnimationCubic;
[animationView.layer addAnimation:animation forKey:nil];
}
//旋转动画
- (void)addRotateAnimationOnView:(UIView *)animationView {
[UIView animateWithDuration:0.32 delay:0 options:UIViewAnimationOptionCurveEaseIn animations:^{
animationView.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:^{
animationView.layer.transform = CATransform3DMakeRotation(2 * M_PI, 0, 1, 0);
} completion:nil];
});
}
需要集成非常规额外的按钮时候，需要继承CYLPlusButton类，并遵循代理CYLPlusButtonSubclassing。
#import "SmallOneBtn.h"
#import "CYLTabBarController.h"
#import "ThreeViewController.h"
@interface SmallOneBtn ()<UIActionSheetDelegate> {
CGFloat _buttonImageHeight;
}
@end
@implementation SmallOneBtn
+ (void)load {
//请在 `-application:didFinishLaunchingWithOptions:` 中进行注册，否则iOS10系统下存在Crash风险。
//[super registerPlusButton];
}
- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
self.titleLabel.textAlignment = NSTextAlignmentCenter;
self.adjustsImageWhenHighlighted = NO;
}
return self;
}
//上下结构的 button
- (void)layoutSubviews {
[super layoutSubviews];
// 控件大小,间距大小
// 注意：一定要根据项目中的图片去调整下面的0.7和0.9，Demo之所以这么设置，因为demo中的 plusButton 的 icon 不是正方形。
CGFloat const imageViewEdgeWidth = self.bounds.size.width * 0.7;
CGFloat const imageViewEdgeHeight = imageViewEdgeWidth * 0.9;
CGFloat const centerOfView = self.bounds.size.width * 0.5;
CGFloat const labelLineHeight = self.titleLabel.font.lineHeight;
CGFloat const verticalMargin = (self.bounds.size.height - labelLineHeight - imageViewEdgeHeight) * 0.5;
// imageView 和 titleLabel 中心的 Y 值
CGFloat const centerOfImageView = verticalMargin + imageViewEdgeHeight * 0.5;
CGFloat const centerOfTitleLabel = imageViewEdgeHeight + verticalMargin * 2 + labelLineHeight * 0.5 + 5;
//imageView position 位置
self.imageView.bounds = CGRectMake(0, 0, imageViewEdgeWidth, imageViewEdgeHeight);
self.imageView.center = CGPointMake(centerOfView, centerOfImageView);
//title position 位置
self.titleLabel.bounds = CGRectMake(0, 0, self.bounds.size.width, labelLineHeight);
self.titleLabel.center = CGPointMake(centerOfView, centerOfTitleLabel);
}
#pragma mark -
#pragma mark - CYLPlusButtonSubclassing Methods
/*
*
Create a custom UIButton with title and add it to the center of our tab bar
*
*/
+ (id)plusButton {
SmallOneBtn *button = [[SmallOneBtn alloc] init];
UIImage *buttonImage = [UIImage imageNamed:@"post_normal"];
[button setImage:buttonImage forState:UIControlStateNormal];
[button setTitle:@"发布" forState:UIControlStateNormal];
[button setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
[button setTitle:@"发布" forState:UIControlStateSelected];
[button setTitleColor:[UIColor blueColor] forState:UIControlStateSelected];
button.titleLabel.font = [UIFont systemFontOfSize:9.5];
[button sizeToFit]; // or set frame in this way `button.frame = CGRectMake(0.0, 0.0, 250, 100);`
// button.frame = CGRectMake(0.0, 0.0, 250, 100);
// button.backgroundColor = [UIColor redColor];
// if you use `+plusChildViewController` , do not addTarget to plusButton.
[button addTarget:button action:@selector(clickPublish) forControlEvents:UIControlEventTouchUpInside];
return button;
}
/*
*
Create a custom UIButton without title and add it to the center of our tab bar
*
*/
//+ (id)plusButton
//{
//
// UIImage *buttonImage = [UIImage imageNamed:@"hood.png"];
// UIImage *highlightImage = [UIImage imageNamed:@"hood-selected.png"];
//
// CYLPlusButtonSubclass* button = [CYLPlusButtonSubclass buttonWithType:UIButtonTypeCustom];
//
// button.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleTopMargin;
// button.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height);
// [button setBackgroundImage:buttonImage forState:UIControlStateNormal];
// [button setBackgroundImage:highlightImage forState:UIControlStateHighlighted];
// [button addTarget:button action:@selector(clickPublish) forControlEvents:UIControlEventTouchUpInside];
//
// return button;
//}
#pragma mark -
#pragma mark - Event Response
- (void)clickPublish {
CYLTabBarController *tabBarController = [self cyl_tabBarController];
UIViewController *viewController = tabBarController.selectedViewController;
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil
delegate:nil
cancelButtonTitle:@"取消"
destructiveButtonTitle:nil
otherButtonTitles:@"拍照", @"从相册选取", @"淘宝一键转卖", nil];
[actionSheet showInView:viewController.view];
}
#pragma mark - UIActionSheetDelegate
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
NSLog(@"buttonIndex = %@", @(buttonIndex));
}
#pragma mark - CYLPlusButtonSubclassing
//+ (UIViewController *)plusChildViewController {
// UIViewController *plusChildViewController = [[UIViewController alloc] init];
// plusChildViewController.view.backgroundColor = [UIColor greenColor];
// plusChildViewController.navigationItem.title = @"PlusChildViewController";
// UIViewController *plusChildNavigationController = [[UINavigationController alloc]
// initWithRootViewController:plusChildViewController];
// return plusChildNavigationController;
//}
//中间按钮的位置
+ (NSUInteger)indexOfPlusButtonInTabBar {
return 2;
}
//
//+ (BOOL)shouldSelectPlusChildViewController {
// BOOL isSelected = CYLExternPlusButton.selected;
// if (isSelected) {
// NSLog(@"🔴类名与方法名：%@（在第%@行），描述：%@", @(__PRETTY_FUNCTION__), @(__LINE__), @"PlusButton is selected");
// } else {
// NSLog(@"🔴类名与方法名：%@（在第%@行），描述：%@", @(__PRETTY_FUNCTION__), @(__LINE__), @"PlusButton is not selected");
// }
// return YES;
//}
//constantOfPlusButtonCenterYOffset 为0，同时 multiplierOfTabBarHeight 的值是0.5，表示 PlusButton 居中，小于0.5表示 PlusButton 偏上，大于0.5则表示偏下。
+ (CGFloat)multiplierOfTabBarHeight:(CGFloat)tabBarHeight {
return 0.3;
}
+ (CGFloat)constantOfPlusButtonCenterYOffsetForTabBarHeight:(CGFloat)tabBarHeight {
return -0;
}
动画.gif
我的Demo
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