涉及到Segment的时候就不自觉地找个第三方解决一下，前期还觉得沾沾自喜，任务解决了，当更深入的了解一下就懵逼了，啥都不会，最近觉得Segment用的比较频繁，而第三方写的很是复杂，所以就自己写了两个简单的：
1.具有手势切换能力（scrollView代理方法里面将滑动手势和标题按钮点击关联）
2.没有手势切换能力
下面是代码时间
快创建创建一个控制器以及四个子控制器试试吧
创建控制器
#import <UIKit/UIKit.h>
@interface GestureCommoneViewController : UIViewController
@end
//
// GestureCommoneViewController.m
// SGSegmentedControlExample
//
// Created by APEW on 2017/9/8.
// Copyright © 2017年 Jason. All rights reserved.
//
#import "GestureCommoneViewController.h"
//下面的四个控制器只做了背景色处理
#import "TestOneVC.h"
#import "TestTwoVC.h"
#import "TestThreeVC.h"
#import "TestFourVC.h"
//UIView的category 涉及frame必备，没有加类似于mas_这样的前缀，最讨厌这种工具类加前缀的，好像不知道他写的似的
#import "UIView+Extension.h"
//下面都是些快捷写法，一般在PCH文件中
#define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)
#define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height)
#define VHeight SCREEN_HEIGHT - 64
#define NavH 64
#define TabH 49
NSString *const TitleButtonDidRepeatClickNotification = @"TitleButtonDidRepeatClickNotification";
@interface GestureCommoneViewController ()<UIScrollViewDelegate>//若是不要手势可不加
@property (nonatomic ,strong)UIScrollView *mainScrlooView;
@property (nonatomic, weak) UIView *titlesView;
/**标题下滑线*/
@property(nonatomic,strong) UIView * titleUnderline;
/**滑动按钮*/
@property(nonatomic,strong) UIButton * titleBtn;
@end
@implementation GestureCommoneViewController
//将scrollView的scrollEnable和处理标题view里面button的点击关联，假如不需要滑动，则把scrollView的代理去掉
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.edgesForExtendedLayout = UIRectEdgeNone;//navigation下面为坐标原点（0，0）
[self setupAllChildControllers];
// 添加第0个子控制器的view
[self addChildVcViewIntoScrollView:0];
}
-(void)dealloc{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)setupAllChildControllers{
TestOneVC *vc1 = [TestOneVC new];
TestTwoVC *vc2 = [TestTwoVC new];
TestThreeVC *vc3 = [TestThreeVC new];
TestFourVC *vc4 = [TestFourVC new];
[self addChildViewController:vc1];
[self addChildViewController:vc2];
[self addChildViewController:vc3];
[self addChildViewController:vc4];
[self setupMainScrollerView];
[self setupTitleView];
}
- (void)setupMainScrollerView{
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, VHeight)];
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.showsVerticalScrollIndicator = NO;
scrollView.backgroundColor = [UIColor whiteColor];
// scrollView.scrollEnabled = NO;//默认为Yes//若是不要手势设置为NO
scrollView.bounces = NO;
scrollView.pagingEnabled = YES;
scrollView.scrollsToTop = NO; // 点击状态栏的时候，这个scrollView不会滚动到最顶部
scrollView.delegate = self;//若是不要手势可不加
[self.view addSubview:scrollView];
self.mainScrlooView = scrollView;
NSUInteger count = self.childViewControllers.count;
// CGFloat scrollViewW = scrollView.width;
scrollView.contentSize = CGSizeMake(count * SCREEN_WIDTH, 0);
}
- (void)setupTitleView{
UIView *titlesView = [[UIView alloc] init];
titlesView.backgroundColor = [UIColor whiteColor];
titlesView.frame = CGRectMake(0, 0, SCREEN_WIDTH, 44);
[self.view addSubview:titlesView];
self.titlesView = titlesView;
// 标题栏按钮
[self setupTitleButtons];
// 标题下划线
[self setupTitleUnderline];
}
- (void)setupTitleButtons{
NSArray* titles = @[@"天气",@"科技",@"生活",@"娱乐"];//随便啥写了四个button标题
NSUInteger count = titles.count;
//标题按钮的尺寸
CGFloat titleButtonW = self.titlesView.width/count;
CGFloat titleButtonH = self.titlesView.height;
for (NSUInteger i = 0; i<count; i++) {
UIButton * titleButton = [[UIButton alloc]init];
[titleButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
titleButton.tag = i;
[titleButton addTarget:self action:@selector(titleButtonClick:) forControlEvents:UIControlEventTouchUpInside];
[self.titlesView addSubview:titleButton];
titleButton.frame = CGRectMake(i*titleButtonW, 0, titleButtonW, titleButtonH);
[titleButton setTitle:titles[i] forState:UIControlStateNormal];
}
}
- (void)setupTitleUnderline{
UIButton * firstTitleButton = self.titlesView.subviews.firstObject;
//下划线
UIView * titleUnderline = [[UIView alloc]init];
titleUnderline.height = 2;
titleUnderline.y = self.titlesView.height - titleUnderline.height;
titleUnderline.backgroundColor = [UIColor redColor];
[self.titlesView addSubview:titleUnderline];
self.titleUnderline = titleUnderline;
firstTitleButton.selected = YES;
self.titleBtn = firstTitleButton;
[firstTitleButton.titleLabel sizeToFit];
self.titleUnderline.width = firstTitleButton.width;
self.titleUnderline.centerX = firstTitleButton.centerX;
}
- (void)titleButtonClick:(UIButton *)titleButton{
if (self.titleBtn == titleButton) {
[[NSNotificationCenter defaultCenter]postNotificationName:TitleButtonDidRepeatClickNotification object:nil];
}
// 处理标题按钮点击
[self dealTitleButtonClick:titleButton];
}
- (void)dealTitleButtonClick:(UIButton*)titleButton{
self.titleBtn.selected = NO;
titleButton.selected = YES;
self.titleBtn = titleButton;
NSUInteger index = titleButton.tag;
[UIView animateWithDuration:0.25 animations:^{
//处理下划线
self.titleUnderline.width = titleButton.width;
self.titleUnderline.centerX = titleButton.centerX;
CGFloat offsetX = self.mainScrlooView.width*index;
self.mainScrlooView.contentOffset = CGPointMake(offsetX, self.mainScrlooView.contentOffset.y);
}completion:^(BOOL finished) {
[self addChildVcViewIntoScrollView:index];
}];
for (NSUInteger i = 0; i<self.childViewControllers.count; i++) {
UIViewController * childVc = self.childViewControllers[i];
if (!childVc.isViewLoaded)continue;
UIScrollView *scrollView = (UIScrollView*)childVc.view;
if (![scrollView isKindOfClass:[UIScrollView class]]) continue;
scrollView.scrollsToTop = (i == index);
}
}
- (void)addChildVcViewIntoScrollView:(NSInteger)index{
UIViewController*childVc = self.childViewControllers[index];
if (childVc.isViewLoaded) return;
// 设置子控制器view的frame
// 取出index位置对应的子控制器view
UIView *childVcView = childVc.view;
CGFloat scrollViewW = self.mainScrlooView.width;
childVcView.frame = CGRectMake(index * scrollViewW, 44, scrollViewW, self.mainScrlooView.height);
// 添加子控制器的view到scrollView中
[self.mainScrlooView addSubview:childVcView];
}
//如果不添加手势，既没有scrollView的代理及方法了
#pragma -mark scrolleViewDelegate
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
// 求出标题按钮的索引
NSUInteger index = scrollView.contentOffset.x / scrollView.width;
// 点击对应的标题按钮
self.titleBtn = self.titlesView.subviews[index];
// [self titleButtonClick:titleButton];
[self dealTitleButtonClick:self.titleBtn];
}
@end
千外别走开哦，涉及到手势问题就会涉及到手势冲突处理。
说一个我遇到的情况，子控制器的里面是一个最常见的tableView，cell的删除原生的里面有个侧滑（向左滑），这时候就要做手势冲突处理，还是代码啦
创建一个
scrollView子类继承UIScrollView
#import <UIKit/UIKit.h>
@interface FSScrollViewGes : UIScrollView<UIGestureRecognizerDelegate>
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer;
@end
#import "FSScrollViewGes.h"
@implementation FSScrollViewGes
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return [otherGestureRecognizer.view.superview isKindOfClass:[UITableView class]];
}
@end
其实就是判断一下手势来自何方，使用方法也是很简单就是利用刚刚写好的子类去创建scrollView就好了
//用FSScrollViewGes去创建ScrollView，既下面第一句话替代原有的创建方法就好
UIScrollView *scrollView = [[FSScrollViewGes alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, VHeight)];
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, VHeight)];
这样的话tableView的侧滑删除方能正常侧滑出来，否则多侧滑几次也是可以出来，但是那真的需要运气
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{
return YES;
}
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
return UITableViewCellEditingStyleDelete;
}
- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
添加一个删除action（UITableViewRowAction）
}
OK，结束，我的方法就是简单的实现一下功能，完成基本的功能，想要各种花式
1.比如最前面的全局属性button，你可以自定义，那样就是各种花式的button
2.假如需要titleView能滚动，那么就把titleView由UIView换成UIScrollView
沙漠骑士
网友评论