iOS开发-iPad侧边栏Tab选项卡切换(转)

2017-11-25  本文已影响38人  写代码的八爪鱼

Android中习惯了叫侧边栏,iOS中如果不习惯侧边栏称呼的话可以叫dock,侧边栏的切换,类似于Android中的底部导航栏的切换,iPad尺寸大了一些,导航的栏目放在侧边会显示的更好耐看一些。选项卡是用按钮实现的,通过按钮的状态控制按钮的背景图片,最后通过按钮的Tag属性进行相对应的操作,iPad需要考虑一个横竖屏的问题,不过现在有些项目为了效果也好,为了开发效率也罢,可能只是选中了横屏效果。

基本布局

布局之前先来看一下最终需要实现的效果:

image

需要最四个图片进行相应的操作,通过图片控制最后的切换效果,黑色的属于侧边栏的区域,四个图片是按钮的背景图片,不过由于需要经常操作区域的宽度和按钮的宽度,需要预定义一下,新建一个Common.h文件,如果你不习惯,你也可以定义为Config.h,能看懂即可:

|

1

2

3

|

//侧边栏条目的尺寸

#define GPDockItemWidth 100

#define GPDockItemHeight 80

|

在之前的xCode中是默认的有pch文件的,xCode6.1中没有,需要新建一个pch文件:

image

新建之后并不能保证你运行成功,还需要去编译中设置一下Prefix Header($(SRCROOT)/PrefixHeader.pch),清理下项目,导入Common.h文件即可成功;

image

Demo实战

①首先需要新建一个

GPMainController控制器,控制页面页面逻辑:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

|

//

// GPMainController.h

// GrouponProject

//http://www.cnblogs.com/xiaofeixiang

// Created by keso on 15/3/9.

// Copyright (c) 2015年 keso. All rights reserved.

//

#import <UIKit/UIKit.h>

#import "GPDock.h"

@interface

GPMainController : UIViewController <GPDockItemDelegate>

@end

|

需要在ViewDidLoad加载侧边栏区域:

|

1

2

3

4

5

6

7

8

9

10

11

|

- (``void``)viewDidLoad {

[``super

viewDidLoad];

// Do any additional setup after loading the view.

self``.view.backgroundColor=[UIColor greenColor];

//加入侧边栏Dock

GPDock *dock=[[GPDock alloc]initWithFrame:CGRectMake(0, 0,GPDockItemWidth, self``.view.frame.size.height)];

dock.dockDelegate=``self``;

[``self``.view addSubview:dock];

}

|

响应侧边栏的点击事件,需要用到委托,如果委托不是很熟悉,可以参考本人之前的博客:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

|

-(``void``)switchMainByTabItem:(GPDock *)gpdock originalTab:(``int``)start destinationTab:(``int``)end{

switch

(end) {

case

0:

self``.view.backgroundColor=[UIColor blackColor];

break``;

case

1:

self``.view.backgroundColor=[UIColor blueColor];

break``;

case

2:

self``.view.backgroundColor=[UIColor redColor];

break``;

case

3:

self``.view.backgroundColor=[UIColor purpleColor];

break``;

default``:

break``;

}

}

|

GPMainContrller主要用于处理页面的逻辑,同时需要在AppDelegate中设置一下根控制器:

|

1

2

3

4

5

6

|

- (``BOOL``)application:(UIApplication *)application didFinishLaunchingWithOptions:(``NSDictionary

*)launchOptions {

// Override point for customization after application launch.

[UIView setAnimationDuration:2.0];

self``.window.rootViewController=[[GPMainController alloc]init];

return

YES``;

}

|

②设置侧边栏区域,继承自UIView:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

|

//

// GPDock.h

// GrouponProject

//http://www.cnblogs.com/xiaofeixiang

// Created by keso on 15/3/10.

// Copyright (c) 2015年 keso. All rights reserved.

//

#import <UIKit/UIKit.h>

#import "GPTabItem.h"

@class

GPDock;

@protocol

GPDockItemDelegate <``NSObject``>

-(``void``)switchMainByTabItem:(GPDock*)gpdock originalTab:(``int``)start destinationTab:(``int``)end;

@end

@interface

GPDock : UIView

{

GPTabItem *selectedTabItem;

}

@property

(``nonatomic``,weak) id``<GPDockItemDelegate> dockDelegate;

@end

|

初始化侧边栏:

|

1

2

3

4

5

6

7

8

9

10

11

|

-(instancetype)initWithFrame:(CGRect)frame{

self``=[``super

initWithFrame:frame];

if

(``self``) {

//自动伸缩高度可伸缩,右边距可以伸缩

self``.autoresizingMask=UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleRightMargin;

//设置背景图片

self``.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@``"Toolbar_bg_tabbar.png"``]];

[``self

addTabItems];

}

return

self``;

}

|

添加Tab选项卡:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

|

//添加Tab选项卡

- (``void``)addTabItems

{

//首页

[``self

addSingleTab:@``"Toolbar_searchshop.png"

selectedImage:@``"Toolbar_searchshop_selected.png"

weight:1];

//团购

[``self

addSingleTab:@``"Toolbar_groupon.png"

selectedImage:@``"Toolbar_groupon_selected.png"

weight:2];

//排行榜

[``self

addSingleTab:@``"Toolbar_ranklist.png"

selectedImage:@``"Toolbar_ranklist_selected.png"

weight:3];

// 个人中心

[``self

addSingleTab:@``"Toolbar_usercenter.png"

selectedImage:@``"Toolbar_usercenter_selected.png"

weight:4];

}

|

因为代码类似,所以封装到一个方法里面:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

|

- (``void``)addSingleTab:(``NSString

*)backgroundImage selectedImage:(``NSString

*)selectedImage weight:(``int``)weight

{

GPTabItem *tabItem=[[GPTabItem alloc]init];

[tabItem setBackgroundImage:backgroundImage];

[tabItem setSelectedImage:selectedImage];

//设置位置

tabItem.frame = CGRectMake(0, GPDockItemHeight * (weight+1), 0, 0);

//设置选中触摸选中事件

[tabItem addTarget:``self

action:``@selector``(tabItemTouchEvent:) forControlEvents:UIControlEventTouchDown];

tabItem.tag = weight - 1;

[``self

addSubview:tabItem];

}

|

设置触摸事件:

|

1

2

3

4

5

6

7

8

9

10

11

12

|

//设置触摸事件

- (``void``)tabItemTouchEvent:(GPTabItem *)tabItem

{

if

([``self``.dockDelegate respondsToSelector:``@selector``(switchMainByTabItem:originalTab:destinationTab:)]) {

[``self``.dockDelegate switchMainByTabItem:``self

originalTab:selectedTabItem.tag destinationTab:tabItem.tag];

}

selectedTabItem.enabled=``YES``;

tabItem.enabled = NO``;

//将当前选中的赋值

selectedTabItem =tabItem;

}

|

③封装侧边栏的GPDockItem,然后选项卡上的可以继承:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

|

//

// GPDockItem.h

// GrouponProject

//博客园FlyElephant:http://www.cnblogs.com/xiaofeixiang

// Created by keso on 15/3/11.

// Copyright (c) 2015年 keso. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface

GPDockItem : UIButton

//背景图片

@property

(``nonatomic``,strong) NSString

*backgroundImage;

//选中图片

@property

(``nonatomic``,strong) NSString

*selectedImage;

@end

|

设置背景图片和选中图片:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

|

//

// GPDockItem.m

// GrouponProject

//博客园FlyElephant:http://www.cnblogs.com/xiaofeixiang

// Created by keso on 15/3/11.

// Copyright (c) 2015年 keso. All rights reserved.

//

#import "GPDockItem.h"

@implementation

GPDockItem

/*

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

- (void)drawRect:(CGRect)rect {

// Drawing code

}

*/

-(instancetype)initWithFrame:(CGRect)frame{

self``=[``super

initWithFrame:frame];

if

(``self``) {

// Item分割线

UIImageView *splitLine = [[UIImageView alloc] init];

splitLine.frame = CGRectMake(0, 0, GPDockItemWidth, 2);

splitLine.image = [UIImage imageNamed:@``"separator_tabbar_item.png"``];

[``self

addSubview:splitLine];

}

return

self``;

}

//设置背景图片

-(``void``)setBackgroundImage:(``NSString

*)backgroundImage{

_backgroundImage=backgroundImage;

[``self

setImage:[UIImage imageNamed:backgroundImage] forState:UIControlStateNormal];

}

//设置选中图片

-(``void``)setSelectedImage:(``NSString

*)selectedImage{

_selectedImage=selectedImage;

[``self

setImage:[UIImage imageNamed:selectedImage] forState:UIControlStateDisabled];

}

-(``void``)setFrame:(CGRect)frame{

//固定Item宽高

frame.size=CGSizeMake(GPDockItemWidth, GPDockItemHeight);

[``super

setFrame:frame];

}

@end

|

GPTabItem代码:

|

1

2

3

4

5

|

#import "GPDockItem.h"

@interface

GPTabItem : GPDockItem

@end

|

设置选中时的背景图片:

|

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

|

//

// GPTabItem.m

// GrouponProject

//博客园FlyElephant:http://www.cnblogs.com/xiaofeixiang

// Created by keso on 15/3/11.

// Copyright (c) 2015年 keso. All rights reserved.

//

#import "GPTabItem.h"

@implementation

GPTabItem

/*

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

- (void)drawRect:(CGRect)rect {

// Drawing code

}

*/

-(instancetype)initWithFrame:(CGRect)frame{

self``=[``super

initWithFrame:frame];

if

(``self``) {

// 设置选中时背景图片

[``self

setBackgroundImage:[UIImage imageNamed:@``"bg_tabbar_item.png"``] forState:UIControlStateDisabled];

}

return

self``;

}

@end

|

最终效果如下:

image

代码相对以往较多,如有遗漏,请随时与我联系,如有好感,推荐或关注均可~

作者:FlyElephant
出处:http://www.cnblogs.com/xiaofeixiang
说明:博客经个人辛苦努力所得,如有转载会特别申明,博客不求技惊四座,但求与有缘人分享个人学习知识,生活学习提高之用,博客所有权归本人和博客园所有,如有转载请在显著位置给出博文链接和作者姓名,否则本人将付诸法律。

上一篇下一篇

猜你喜欢

热点阅读