iOS滑动全屏实现返回功能

本文实例为大家分享了ios滑动全屏实现返回功能的具体代码，供大家参考，具体内容如下

系统自带的滑动返回功能，只能滑动边缘返回，而我们希望通过滑动全屏实现返回功能。

定义basenavigationcontroller来取代uinavigationcontroller

// basenavigationcontroller.h
#import <uikit/uikit.h>

@interface basenavigationcontroller : uinavigationcontroller

@end

// basenavigationcontroller.m
#import "basenavigationcontroller.h"

@interface basenavigationcontroller () <uigesturerecognizerdelegate>

@end

@implementation basenavigationcontroller

#pragma mark - 系统方法
+ (void)load
{
 uinavigationbar *navbar = [uinavigationbar appearancewhencontainedin:self, nil];

 // 只要是通过模型设置，都是通过富文本设置
 // 设置导航条标题 => uinavigationbar
 nsmutabledictionary *attrs = [nsmutabledictionary dictionary];
 attrs[nsfontattributename] = [uifont boldsystemfontofsize:20.0];
 [navbar settitletextattributes:attrs];

 // 设置导航条背景图片
 [navbar setbackgroundimage:[uiimage imagenamed:@"navigationbarbackgroundwhite"] forbarmetrics:uibarmetricsdefault];
}

- (void)viewdidload {
 [super viewdidload];
 // do any additional setup after loading the view.

 // 自己控制返回手势
// self.interactivepopgesturerecognizer.delegate = self;
// nslog(@"self.interactivepopgesturerecognizer : %@",self.interactivepopgesturerecognizer);
// nslog(@"self.interactivepopgesturerecognizer.delegate : %@",self.interactivepopgesturerecognizer.delegate);

 // 全屏返回手势，而不是边缘返回手势
 uipangesturerecognizer *pan = [[uipangesturerecognizer alloc] initwithtarget:self.interactivepopgesturerecognizer.delegate action:@selector(handlenavigationtransition:)];
 [self.view addgesturerecognizer:pan];
 // 控制手势什么时候触发，只有非根控制器才需要出发手势
 pan.delegate = self;
 // 禁止之前手势
 self.interactivepopgesturerecognizer.enabled = no;
}

/**
 * self.interactivepopgesturerecognizer : <uiscreenedgepangesturerecognizer: 0x7fb57dc23510; state = possible; delaystouchesbegan = yes; view = <uilayoutcontainerview 0x7fb57dc220e0>; target= <(action=handlenavigationtransition:, target=<_uinavigationinteractivetransition 0x7fb57dc1c570>)>>
 * self.interactivepopgesturerecognizer.delegate : <_uinavigationinteractivetransition: 0x7fb57dc1c570>
 */

#pragma mark - uigesturerecognizerdelegate
- (bool)gesturerecognizer:(uigesturerecognizer *)gesturerecognizer shouldreceivetouch:(uitouch *)touch
{
 // 当不是根控制器时才会触发返回手势
 return (self.childviewcontrollers.count > 1);
}

#pragma mark - 重写
- (void)pushviewcontroller:(uiviewcontroller *)viewcontroller animated:(bool)animated
{
 if (self.childviewcontrollers.count > 0) { // 代表不是根控制器

  // 自定义返回按钮覆盖了系统的返回手势
  viewcontroller.navigationitem.leftbarbuttonitem = [uibarbuttonitem setbackbuttonitemwithimage:[uiimage imagenamed:@"navigationbuttonreturn"] highlightedimage:[uiimage imagenamed:@"navigationbuttonreturnclick"] target:self action:@selector(backclick) title:@"返回"];
 }

 [super pushviewcontroller:viewcontroller animated:animated];
}

- (void)backclick
{
 [self popviewcontrolleranimated:yes];
}

@end

uibarbuttonitem+item

// uibarbuttonitem+item.h
#import <uikit/uikit.h>

@interface uibarbuttonitem (item)

+ (uibarbuttonitem *)setbarbuttonitemwithimage:(uiimage *)image highlightedimage:(uiimage *)highlightedimage target:(id)target action:(sel)action;

+ (uibarbuttonitem *)setbarbuttonitemwithimage:(uiimage *)image selectedimage:(uiimage *)selectedimage target:(id)target action:(sel)action;

+ (uibarbuttonitem *)setbackbuttonitemwithimage:(uiimage *)image highlightedimage:(uiimage *)highlightedimage target:(id)target action:(sel)action title:(nsstring *)title;

@end


// uibarbuttonitem+item.m
#import "uibarbuttonitem+item.h"

@implementation uibarbuttonitem (item)

+ (uibarbuttonitem *)setbarbuttonitemwithimage:(uiimage *)image highlightedimage:(uiimage *)highlightedimage target:(id)target action:(sel)action
{
 // 1.leftbarbuttonitem
 uibutton *leftbutton = [uibutton buttonwithtype:uibuttontypecustom];
 [leftbutton setimage:image forstate:uicontrolstatenormal];
 [leftbutton setimage:highlightedimage forstate:uicontrolstatehighlighted];
 [leftbutton sizetofit];

 // 按钮点击事件
 [leftbutton addtarget:target action:action forcontrolevents:uicontroleventtouchupinside];

 // 由于使用button会使得点击范围增大，所以将button放进view中，然后赋值
 uiview *leftview = [[uiview alloc] initwithframe:leftbutton.bounds];
 [leftview addsubview:leftbutton];
 return [[uibarbuttonitem alloc] initwithcustomview:leftview];
}

+ (uibarbuttonitem *)setbackbuttonitemwithimage:(uiimage *)image highlightedimage:(uiimage *)highlightedimage target:(id)target action:(sel)action title:(nsstring *)title
{
 // 设置返回按钮
 uibutton *backbutton = [uibutton buttonwithtype:uibuttontypecustom];
 [backbutton settitle:title forstate:uicontrolstatenormal];
 [backbutton setimage:image forstate:uicontrolstatenormal];
 [backbutton setimage:highlightedimage forstate:uicontrolstatehighlighted];
 [backbutton settitlecolor:[uicolor blackcolor] forstate:uicontrolstatenormal];
 [backbutton settitlecolor:[uicolor redcolor] forstate:uicontrolstatehighlighted];
 [backbutton addtarget:target action:action forcontrolevents:uicontroleventtouchupinside];
 backbutton.contentedgeinsets = uiedgeinsetsmake(0, -15, 0, 0);
 [backbutton sizetofit];

 return [[uibarbuttonitem alloc] initwithcustomview:backbutton];
}

+ (uibarbuttonitem *)setbarbuttonitemwithimage:(uiimage *)image selectedimage:(uiimage *)selectedimage target:(id)target action:(sel)action
{
 // 1.leftbarbuttonitem
 uibutton *leftbutton = [uibutton buttonwithtype:uibuttontypecustom];
 [leftbutton setimage:image forstate:uicontrolstatenormal];
 [leftbutton setimage:selectedimage forstate:uicontrolstateselected];
 [leftbutton sizetofit];

 // 按钮点击事件
 [leftbutton addtarget:target action:action forcontrolevents:uicontroleventtouchupinside];

 // 由于使用button会使得点击范围增大，所以将button放进view中，然后赋值
 uiview *leftview = [[uiview alloc] initwithframe:leftbutton.bounds];
 [leftview addsubview:leftbutton];
 return [[uibarbuttonitem alloc] initwithcustomview:leftview];
}

@end

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。

原文链接：https://blog.csdn.net/MyKingSaber/article/details/72841339