废话不多说直接上代码：
这个功能应该是挺常见的, 一个tableview到另一个tableview, 类似segment的一个东西, 我把它封装起来了:
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//
// viewcontroller.m
//
//
// created by 高雅馨 on 16/6/3.
// copyright © 2016年 高雅馨. all rights reserved.
//
#import "dcnavtabbarcontroller.h"
#import "htmacro.h"
@interface dcnavtabbarcontroller ()<uiscrollviewdelegate>
@property (nonatomic, weak) uibutton *oldbtn;
@property(nonatomic,strong) nsarray *vcarr;
@property (nonatomic, weak) uiscrollview *contentview;
@property (nonatomic, weak) uiscrollview *topbar;
@property(nonatomic,assign) cgfloat btnw ;
@property (nonatomic, weak) uiview *slider;
@end
@implementation dcnavtabbarcontroller
-(uicolor *)slidercolor
{
if(_slidercolor == nil)
{
_slidercolor = [uicolor colorwithred:1.00 green:0.36 blue:0.25 alpha:1.00];
}
return _slidercolor;
}
-(uicolor *)btntextnomalcolor
{
if(_btntextnomalcolor == nil)
{
_btntextnomalcolor = [uicolor colorwithwhite:0.205 alpha:1.000];
}
return _btntextnomalcolor;
}
-(uicolor *)btntextseletedcolor
{
if(_btntextseletedcolor == nil)
{
_btntextseletedcolor = [uicolor colorwithred:1.00 green:0.36 blue:0.25 alpha:1.00];
}
return _btntextseletedcolor;
}
-(uicolor *)topbarcolor
{
if(_topbarcolor == nil)
{
_topbarcolor = [uicolor whitecolor];
}
return _topbarcolor;
}
-(instancetype)initwithsubviewcontrollers:(nsarray *)subviewcontrollers
{
if(self = [super init])
{
_vcarr = subviewcontrollers;
}
return self;
}
- (void)viewdidload {
[super viewdidload];
//添加上面的导航条
[self addtopbar];
//添加子控制器
[self addvcview];
//添加滑块
[self addsliderview];
}
-(void)addsliderview
{
if(self.vcarr.count == 0) return;
uiview *slider = [[uiview alloc]initwithframe:cgrectmake(25,41,self.btnw - 50, 3)];
slider.backgroundcolor = self.slidercolor;
[self.topbar addsubview:slider];
self.slider = slider;
}
-(void)addtopbar
{
if(self.vcarr.count == 0) return;
nsuinteger count = self.vcarr.count;
uiscrollview *scrollview = [[uiscrollview alloc]initwithframe:cgrectmake(0, 0, screen_width, 44)];
scrollview.backgroundcolor = self.topbarcolor;
self.topbar = scrollview;
self.topbar.bounces = no;
[self.view addsubview:self.topbar];
if(count <= 5) {
self.btnw = screen_width / count;
} else {
self.btnw = screen_width / 5.0;
}
//添加button
for (int i = 0; i<count; i++) {
uiviewcontroller *vc = self.vcarr[i];
uibutton *btn = [[uibutton alloc]initwithframe:cgrectmake(i*self.btnw, 0, self.btnw, 44)];
btn.titlelabel.font = [uifont systemfontofsize:15];
btn.titlelabel.numberoflines = 0;
btn.titlelabel.textalignment = 1;
btn.tag = 10000+i;
[btn settitlecolor:self.btntextnomalcolor forstate:uicontrolstatenormal];
[btn settitlecolor:self.btntextseletedcolor forstate:uicontrolstateselected];
[btn settitle:vc.title forstate:uicontrolstatenormal];
[btn addtarget:self action:@selector(click:) forcontrolevents:uicontroleventtouchupinside];
[self.topbar addsubview:btn];
if(i == 0)
{
btn.selected = yes;
self.oldbtn = btn;
}
}
self.topbar.contentsize = cgsizemake(self.btnw *count, -64);
}
-(void)addvcview
{
uiscrollview *contentview = [[uiscrollview alloc]initwithframe:cgrectmake(0, 0+44, screen_width, screen_height -44)];
self.contentview = contentview;
self.contentview.bounces = no;
contentview.delegate = self;
contentview.backgroundcolor = [uicolor colorwithwhite:0.859 alpha:1.000];
[self.view addsubview:contentview];
nsuinteger count = self.vcarr.count;
for (int i=0; i<count; i++) {
uiviewcontroller *vc = self.vcarr[i];
[self addchildviewcontroller:vc];
vc.view.frame = cgrectmake(i*screen_width, 0, screen_width, screen_height -44);
[contentview addsubview:vc.view];
}
contentview.contentsize = cgsizemake(count*screen_width, screen_height - 44);
contentview.pagingenabled = yes;
}
-(void)click:(uibutton *)sender
{
if(sender.selected) return;
self.oldbtn.selected = no;
sender.selected = yes;
self.contentview.contentoffset = cgpointmake((sender.tag - 10000) *screen_width, 0);
self.oldbtn.transform = cgaffinetransformidentity;
self.oldbtn = sender;
//判断导航条是否需要移动
cgfloat maxx = cgrectgetmaxx(self.slider.frame);
if(maxx >=screen_width && sender.tag != self.vcarr.count + 10000 - 1)
{
[uiview animatewithduration:0.3 animations:^{
self.topbar.contentoffset = cgpointmake(maxx - screen_width + self.btnw, -64);
}];
}else if(maxx < screen_width)
{
[uiview animatewithduration:0.3 animations:^{
self.topbar.contentoffset = cgpointmake(0, 0);
}];
}
}
-(void)scrollviewdidscroll:(uiscrollview *)scrollview
{
//滑动导航条
self.slider.frame = cgrectmake(scrollview.contentoffset.x / screen_width *self.btnw + 25 , 41, self.btnw - 50, 3);
}
//判断是否切换导航条按钮的状态
-(void)scrollviewdidenddecelerating:(uiscrollview *)scrollview
{
cgfloat offx = scrollview.contentoffset.x;
int tag = (int)(offx /screen_width + 0.5) + 10000;
uibutton *btn = [self.view viewwithtag:tag];
if(tag != self.oldbtn.tag)
{
[self click:btn];
}
}
- (void)didreceivememorywarning {
[super didreceivememorywarning];
}
@end
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这个很容易看懂的, 是不是, 就不在这里多解释.
上面这张呢, 则是把导航栏隐藏, 自定义一个小uiview截取网络图片作为导航栏, 又自定义一个大view作为tableview头视图.并且我还运用了观察者注册消息通知, 代码有点长, 不过我写注释了哦, 可以看懂的.