// // XRSliderViewController.h
/**
****************************************************
* project: XRSliderViewController
* author : by xu ran
* date : 2014年12月21日16:39:16
****************************************************/
#import <UIKit/UIKit.h>
@interface XRSliderViewController : UIViewController
// 初始化方法
- (instancetype)initWithLeftViewController:(UIViewController *)leftVc MainViewController:(UIViewController *)mainVc;
@end
// XRSliderViewController.m
#import "XRSliderViewController.h"
#define OPEN_CLOSEMENU_NOTIFICATIONNAME @"clickCenterMenuNotifi"
#define BANMOVE_NOTIFICATIONNAME @"noMove"
#define ALLOWMOVE_NOTIFICATIONNAME @"canMove"
#define BACKMOVE_NOTIFICATIONNAME @"back"
#define MainScreenSize [UIScreen mainScreen].bounds.size
// 侧滑的菜单宽度
#define MenuWidth [UIScreen mainScreen].bounds.size.width * 3.0f / 4.0f
@interface XRSliderViewController ()
{
UIViewController * _leftVc;
UIViewController * _mainVc;
UIPanGestureRecognizer * _dragPan; // 拖动手势
BOOL _isCanMove; // 是否可以拖动
}
@end
@implementation XRSliderViewController
/**
* 移除观察者
*/
- (void)dealloc
{
// 移除观察者
[[NSNotificationCenter defaultCenter] removeObserver:self name:OPEN_CLOSEMENU_NOTIFICATIONNAME object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:BANMOVE_NOTIFICATIONNAME object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:ALLOWMOVE_NOTIFICATIONNAME object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:BACKMOVE_NOTIFICATIONNAME object:nil];
}
- (instancetype)initWithLeftViewController:(UIViewController *)leftVc MainViewController:(UIViewController *)mainVc
{
if ([super init]) {
// 注册观察者
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(menuClick) name:OPEN_CLOSEMENU_NOTIFICATIONNAME object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(banMove) name:BANMOVE_NOTIFICATIONNAME object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(allowMove) name:ALLOWMOVE_NOTIFICATIONNAME object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(back) name:BACKMOVE_NOTIFICATIONNAME object:nil];
_leftVc = leftVc;
_mainVc = mainVc;
_isCanMove = YES;
}
return self;
}
// 创建侧滑菜单
- (void)createMenu
{
_leftVc.view.frame = CGRectMake(0, 20, MenuWidth, MainScreenSize.height - 20);
[self.view addSubview:_leftVc.view];
_mainVc.view.frame = CGRectMake(0, 20, MainScreenSize.width, MainScreenSize.height - 20);
[self.view addSubview:_mainVc.view];
// 添加拖动手势
_dragPan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(dragCenterView:)];
[_mainVc.view addGestureRecognizer:_dragPan];
// 开始让leftVc的view隐藏
[_leftVc.view setHidden:YES];
}
/**
* 隐藏侧边栏
*/
- (void)back
{
[UIView animateWithDuration:0.3 animations:^{
_dragPan.view.transform = CGAffineTransformMakeTranslation(0, 0);
} completion:^(BOOL finished) {
_leftVc.view.hidden = YES;
}];
}
/**
* 禁止拖动
*/
- (void)banMove
{
_isCanMove = NO;
}
/**
* 允许拖动
*/
- (void)allowMove
{
_isCanMove = YES;
}
/**
* 监控view的拖拽手势
* 用x来判断 用transform来控制
*/
- (void)dragCenterView:(UIPanGestureRecognizer *)pan
{
if (_isCanMove) {
_leftVc.view.hidden = NO;
// 取出手势的点
CGPoint point = [pan translationInView:pan.view];
// 结束拖拽
if (pan.state == UIGestureRecognizerStateCancelled || pan.state == UIGestureRecognizerStateEnded) {
if (pan.view.frame.origin.x >= MenuWidth * 0.5) {
// 至少向右走了MenuWidth * 0.5
[UIView animateWithDuration:0.3 animations:^{
// 改变view的Transform
pan.view.transform = CGAffineTransformMakeTranslation(MenuWidth, 0);
}];
}else {
// 走动的距离没有达到MenuWidth * 0.5
[UIView animateWithDuration:0.3 animations:^{
pan.view.transform = CGAffineTransformMakeTranslation(0, 0);
} completion:^(BOOL finished) {
[_leftVc.view setHidden:YES];
}];
}
}else {
// 拖拽中
pan.view.transform = CGAffineTransformTranslate(pan.view.transform, point.x, 0);
// 再次清零
[pan setTranslation:CGPointZero inView:pan.view];
// 判断拖拽的距离
if (pan.view.frame.origin.x >= MenuWidth) {
pan.view.transform = CGAffineTransformMakeTranslation(MenuWidth, 0);
}else if (pan.view.frame.origin.x <= 0) {
pan.view.transform = CGAffineTransformMakeTranslation(0, 0);
}
}
}
}
/**
* 菜单点击
*/
- (void)menuClick
{
_leftVc.view.hidden = NO;
if (_dragPan.view.frame.origin.x <= 0) {
[UIView animateWithDuration:0.3 animations:^{
_dragPan.view.transform = CGAffineTransformMakeTranslation(MenuWidth, 0);
}];
}else {
[UIView animateWithDuration:0.3 animations:^{
_dragPan.view.transform = CGAffineTransformMakeTranslation(0, 0);
} completion:^(BOOL finished) {
_leftVc.view.hidden = YES;
}];
}
}
- (void)viewDidLoad {
[super viewDidLoad];
// 创建侧滑菜单
[self createMenu];
}
@end