IOS笔记UI--侧滑效果的实现

/* 侧滑的功能

1.点击左上角的button，实现侧滑效果，再次点击恢复

2.点击左上角的button，实现侧滑效果，点击右边任意剩余部分的界面，恢复效果

3.屏幕任意左边（0~20像素）的地方，向右移动（不用垂直，只需要横坐标有变动即可），实现侧滑效果，右边任意剩余部分的界面向左拉，恢复效果

4.屏幕任意左边（0~20像素）的地方，向右移动（不用垂直，只需要横坐标有变动即可），实现侧滑效果，点击右边任意剩余部分的界面，恢复效果 */

效果图：

/*

侧滑效果实现思路

1.创建VC（ViewController）,创建NC（UInavigationViewController），把VC加入NC，NC设置为根视图；

2.在NC创建leftBarButtonItem，点击后判断，如果NC的x坐标为0改变坐标为320，如果NC的x坐标为320，改为0；

3.在改变x坐标为320的时候，创建一个UITapGestureRecognizer，x坐标变为0的时候移除UITapGestureRecognizer
4.UITapGestureRecognizer的Click方法是把NC的x坐标变为0；

5.使用touchesBegan和touchesEnded方法计算是否被左拉，是则同样改变x的坐标为320，被右拉则改变x坐标为0；（注意在改变的时候也要创建UITapGestureRecognizer和移除）；

*/

附上完整demo代码：http://download.youkuaiyun.com/detail/csdn_hhg/9193191

代码部分：

ViewController.m
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor =[UIColor purpleColor];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self action:@selector(leftClick)];
}
#pragma mark - 左按钮
-(void)leftClick {
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    UITapGestureRecognizer *tap;
    if (0 == self.navigationController.view.frame.origin.x) {
        self.navigationController.view.frame = CGRectMake(320, 0, 375, 667);
        tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapClick:)];
        [self.view addGestureRecognizer:tap];
    } else {
        self.navigationController.view.frame = CGRectMake(0, 0, 375, 667);
        [self.view removeGestureRecognizer:tap];
    }
}

#pragma mark 手势
-(void)tapClick:(UITapGestureRecognizer*)tap {
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    self.navigationController.view.frame = CGRectMake(0, 0, 375, 667);
    [self.view removeGestureRecognizer:tap];
}

#pragma mark - 点击事件
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];
    beginPoint  = [touch locationInView:self.view];
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];
    CGPoint point  = [touch locationInView:self.view];
    if (0<=beginPoint.x && beginPoint.x <= 20) {
        if (20<=point.x<=357) {
            [UIView beginAnimations:nil context:nil];
            [UIView setAnimationDuration:0.5];
            if (0 == self.navigationController.view.frame.origin.x) {
                self.navigationController.view.frame = CGRectMake(320, 0, 375, 667);
                MyTouchTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapClick:)];
                [self.view addGestureRecognizer:MyTouchTap];
            }
        }
    }else if(0<=beginPoint.x && beginPoint.x <= 50) {
        if (-355<=point.x<=10) {
            self.navigationController.view.frame = CGRectMake(0, 0, 375, 667);
            [self.view removeGestureRecognizer:MyTouchTap];
        }
    }
}