1. 基本概念
-
与导航控制器区别
导航控制器：有层次区别
分栏控制器：平行关系
屏幕快照 2016-11-30 上午9.42.22.png
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常用关键字
屏幕快照 2016-11-30 上午9.45.45.png
2. 基本实现
为了手动创建分栏控制器，还是先把原有的ViewController.h和ViewController.m 还有mainstoryboard文件删除。
创建三个视图控制器：
在APPDelegate中添加代码，创建window，并创建三个视图对象和分栏控制器对象：
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #008400}p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #3d1d81}p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; min-height: 13.0px}p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #703daa}p.p6 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px 'Heiti SC Light'; color: #008400}p.p7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #bb2ca2}span.s1 {font-variant-ligatures: no-common-ligatures}span.s2 {font-variant-ligatures: no-common-ligatures; color: #bb2ca2}span.s3 {font-variant-ligatures: no-common-ligatures; color: #703daa}span.s4 {font-variant-ligatures: no-common-ligatures; color: #000000}span.s5 {font-variant-ligatures: no-common-ligatures; color: #4f8187}span.s6 {font: 11.0px 'Heiti SC Light'; font-variant-ligatures: no-common-ligatures}span.s7 {font-variant-ligatures: no-common-ligatures; color: #3d1d81}span.s8 {font-variant-ligatures: no-common-ligatures; color: #d12f1b}span.s9 {font: 11.0px 'Heiti SC Light'; font-variant-ligatures: no-common-ligatures; color: #d12f1b}span.s10 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures; color: #000000}span.s11 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window=[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
[self.window makeKeyAndVisible];
//创建控制器一
VCFirst* vcFirst = [[VCFirst alloc]init];
vcFirst.view.backgroundColor=[UIColor blueColor];
vcFirst.title=@"视图1";
//创建控制器二
VCSecond* vcSecond=[[VCSecond alloc]init];
vcSecond.view.backgroundColor=[UIColor yellowColor];
vcSecond.title=@"视图二";
//创建控制器三
VCThird* vcThird=[[VCThird alloc]init];
vcThird.view.backgroundColor=[UIColor orangeColor];
vcThird.title=@"视图三";
//创建分栏控制器对象
UITabBarController* tbController=[[UITabBarController alloc]init];
//创建一个控制器数组对象
//将所有要被分栏控制器管理的对象添加到数组中
NSArray* arrayVC= [NSArray arrayWithObjects:vcFirst,vcSecond,vcThird,nil];
//赋给管理数组
tbController.viewControllers=arrayVC;
//将分栏控制器作为根视图的控制器
self.window.rootViewController=tbController;
return YES;
}
分栏控制器对于视图的管理是通过视图数组完成的，分栏控制器的标签就是视图的Title
实现的效果：
</br>
我们可以在添加一些属性：
- 使一打开就直接显示第三个视图
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px 'Heiti SC Light'; color: #008400}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo}span.s1 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures; color: #000000}span.s2 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures}span.s3 {font-variant-ligatures: no-common-ligatures}span.s4 {font-variant-ligatures: no-common-ligatures; color: #703daa}span.s5 {font-variant-ligatures: no-common-ligatures; color: #272ad8}
//设置选中的视图控制器的索引
//实际是通过索引来确定显示哪个控制器
tbController.selectedIndex=2;
- 设置tabBar外观
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #008400}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo}p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px 'Heiti SC Light'; color: #008400}p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #703daa}span.s1 {font-variant-ligatures: no-common-ligatures; color: #000000}span.s2 {font-variant-ligatures: no-common-ligatures}span.s3 {font: 11.0px 'Heiti SC Light'; font-variant-ligatures: no-common-ligatures}span.s4 {font-variant-ligatures: no-common-ligatures; color: #703daa}span.s5 {font-variant-ligatures: no-common-ligatures; color: #bb2ca2}span.s6 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures; color: #000000}span.s7 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures}span.s8 {font-variant-ligatures: no-common-ligatures; color: #3d1d81}
//设置透明度
tbController.tabBar.translucent=NO;
//改变工具栏颜色
tbController.tabBar.barTintColor=[UIColor redColor];
//改变按钮文字颜色
tbController.tabbat.tintColor=[UIColor blueColor];
- 改变按钮内容
方法一：在VCFirst.m中创建一个分栏按钮对象
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px 'Heiti SC Light'; color: #008400}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo}span.s1 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures; color: #000000}span.s2 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures}span.s3 {font-variant-ligatures: no-common-ligatures}span.s4 {font-variant-ligatures: no-common-ligatures; color: #703daa}span.s5 {font-variant-ligatures: no-common-ligatures; color: #3d1d81}span.s6 {font-variant-ligatures: no-common-ligatures; color: #d12f1b}span.s7 {font-variant-ligatures: no-common-ligatures; color: #bb2ca2}span.s8 {font-variant-ligatures: no-common-ligatures; color: #272ad8}
//创建一个分栏按钮对象
UITabBarItem* tabBarItem=[[UITabBarItem alloc]initWithTitle:@"111" image:nil tag:101];
self.tabBarItem=tabBarItem;```
**注**要把title设置放在backgroundcolor前，才能加载出title。
方法二：根据系统风格创建按钮
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px 'Heiti SC Light'; color: #008400}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #3d1d81}p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo}span.s1 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures; color: #000000}span.s2 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures}span.s3 {font-variant-ligatures: no-common-ligatures}span.s4 {font-variant-ligatures: no-common-ligatures; color: #000000}span.s5 {font-variant-ligatures: no-common-ligatures; color: #703daa}span.s6 {font-variant-ligatures: no-common-ligatures; color: #272ad8}span.s7 {font-variant-ligatures: no-common-ligatures; color: #d12f1b}span.s8 {font-variant-ligatures: no-common-ligatures; color: #bb2ca2}
//根据系统风格创建
UITabBarItem* tabBarItem=[[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemContacts tag:101];
//按钮右上角信息
//通常用小红点来提示未读信息
tabBarItem.badgeValue=@"22";
self.tabBarItem=tabBarItem;
实现效果：
#### 3. 分栏控制器的协议函数
如果我们添加足够多的视图，比如六个，出现的结果是系统自动创建一个More：
**点击Edit可以用拖拽实现按钮重新排布**
</br>
##### 协议函数
首先在AppDelegate.h中添加继承：
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #703daa}span.s1 {font-variant-ligatures: no-common-ligatures; color: #bb2ca2}span.s2 {font-variant-ligatures: no-common-ligatures; color: #000000}span.s3 {font-variant-ligatures: no-common-ligatures}
@interface AppDelegate : UIResponder <UIApplicationDelegate,UITabBarControllerDelegate>
然后在AppDelegate.m的BOOL函数中创建一个协议：
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo}span.s1 {font-variant-ligatures: no-common-ligatures}span.s2 {font-variant-ligatures: no-common-ligatures; color: #703daa}span.s3 {font-variant-ligatures: no-common-ligatures; color: #bb2ca2}
tbController.delegate=self;
在函数外去实现：
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; min-height: 13.0px}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px 'Heiti SC Light'; color: #008400}p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo}p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #d12f1b}span.s1 {font-variant-ligatures: no-common-ligatures}span.s2 {font: 11.0px Menlo; font-variant-ligatures: no-common-ligatures}span.s3 {font-variant-ligatures: no-common-ligatures; color: #bb2ca2}span.s4 {font-variant-ligatures: no-common-ligatures; color: #703daa}span.s5 {font-variant-ligatures: no-common-ligatures; color: #3d1d81}span.s6 {font-variant-ligatures: no-common-ligatures; color: #d12f1b}span.s7 {font: 11.0px 'Heiti SC Light'; font-variant-ligatures: no-common-ligatures; color: #d12f1b}span.s8 {font-variant-ligatures: no-common-ligatures; color: #000000}span.s9 {font: 11.0px 'Heiti SC Light'; font-variant-ligatures: no-common-ligatures}
//开始编辑前调用
-(void)tabBarController:(UITabBarController *)tabBarController willBeginCustomizingViewControllers:(NSArray *)viewControllers
{
NSLog(@"编辑前");
}
//即将结束前
-(void)tabBarController:(UITabBarController *)tabBarController willEndCustomizingViewControllers:(NSArray *)viewControllers changed:(BOOL)changed
{
NSLog(@"即将结束前");
}
//已经结束
-(void)tabBarController:(UITabBarController *)tabBarController didEndCustomizingViewControllers:(NSArray *)viewControllers changed:(BOOL)changed
{
NSLog(@"已经结束");
NSLog(@"vc=%@",viewControllers);
}
//选中控制器对象
-(void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
if(tabBarController.viewControllers[tabBarController.selectedIndex]==viewController)
{
NSLog(@"ok");
}
NSLog(@"选中控制器对象");
}
可以做的事情：
1. 得到调整后的数组
2. 得到选中的视图index
