額，沒錯。這篇還是手勢和動畫。第一篇是Tap的手勢，第二篇是Pan的手勢，這次是LongPress。
上篇的控制中心的效果，機油說不滿意。太多bug，太多沒處理好。這次必須要我做一個完成仿照控制中心的，我也是醉了。

首先

因為是要仿照鎖屏界面下地打開控制中心的流程，首先我們需要一個黑漆漆的背景。恩，然后一顆白白的按鈕！

Paste_Image.png

和鎖屏界面對比下：

Paste_Image.png

反正仿的，沒必要太較真嘛~
首先就是模仿點在上面的時候彈出一條。

MainCenterDisplay1.gif

其實就是判斷手勢，長按的時候就動作，else就恢復到原位。
因為是一次完成再來寫的，代碼在最后放出。反正做得也很渣的說。
之后就是拖動的時候，下面的View跟著移動。

MainCenterDisplay2.gif

嘛，就是這樣。最后就是給一個判斷，向上向下添加個方向，拖動多少就自動往上覆蓋之類。
看看代碼就懂了，就是三個手勢狀態的判斷并且事件處理。

仿

因為畢竟是仿的，差不多就可以了！
最后放上代碼。

#import "BaseCenterViewController.h"
#import "CommonHandler.h"

#define GAP_DEFAULT 15
#define WIDTH_BUTTON 40
#define HEIGHT_BUTTON 10
#define HEIGHT_DISPLAY_VIEW 35

@interface BaseCenterViewController ()

@property (nonatomic, strong) UILabel *lb_base;
@property (nonatomic, strong) UIView *view_temp;

@property (nonatomic, assign) BOOL isUpDirection;
@property (nonatomic, assign) CGPoint point_lastLocation;

@end

@implementation BaseCenterViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self setupBaseButton];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

- (void)setupBaseButton{
    
    self.isUpDirection = NO;
    self.point_lastLocation = CGPointMake(self.view.frame.origin.x, self.view.frame.size.height);
    
    self.lb_base = [[UILabel alloc]init];
    self.lb_base.layer.backgroundColor = [CommonHandler getColorWithRed:215 andGreen:215 andBlue:215 andAlpha:1].CGColor;
    self.lb_base.layer.cornerRadius = 5.0f;
    [self.lb_base setFrame:CGRectMake(self.view.frame.size.width - GAP_DEFAULT - WIDTH_BUTTON, self.view.frame.size.height - GAP_DEFAULT - HEIGHT_BUTTON, WIDTH_BUTTON, HEIGHT_BUTTON)];
    
    [self.view addSubview:self.lb_base];
    
    UILongPressGestureRecognizer *gesture_long = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(doLongPressed:)];
    gesture_long.minimumPressDuration = 0.05f;
    gesture_long.numberOfTouchesRequired = 1;
    
    self.lb_base.userInteractionEnabled = YES;

    [self.lb_base addGestureRecognizer:gesture_long];
}

- (void)doLongPressed:(UILongPressGestureRecognizer *)gesture{
    if(!self.view_temp){
        self.view_temp = [[UIView alloc]initWithFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.size.height, self.view.frame.size.width, self.view.frame.size.height - HEIGHT_NAVIGATIONBAR_STATUSBAR - HEIGHT_BOTTOMBAR * 2)];
        [self.view_temp setAlpha:0.75f];
    }
    if(gesture.state == UIGestureRecognizerStateBegan){
//        NSLog(@"%s || long pressed's been actived.", __FUNCTION__ );

        self.view_temp.backgroundColor = [UIColor grayColor];
    
//        [self.view addSubview:self.view_temp];
        [self.view insertSubview:self.view_temp belowSubview:self.lb_base];
        
        [UIView animateWithDuration:0.1f animations:^{
            self.view_temp.transform = CGAffineTransformMakeTranslation(self.view.frame.origin.x, -HEIGHT_DISPLAY_VIEW);
        }];
    }else if(gesture.state == UIGestureRecognizerStateChanged){
        CGPoint point_location = [gesture locationInView:self.view];
        if(point_location.y < self.point_lastLocation.y){
            self.isUpDirection = YES;
        }else{
            self.isUpDirection = NO;
        }
//        NSLog(@"%s || long pressed's moving. and location in view:%@ and Direction:%i.", __FUNCTION__, NSStringFromCGPoint(point_location), self.isUpDirection);
        if(point_location.y > self.view.frame.size.height - self.view_temp.frame.size.height + 10){
            CGRect rect_view_temp = self.view_temp.frame;
            rect_view_temp.origin = CGPointMake(self.view.frame.origin.x, point_location.y - 10);
            [UIView animateWithDuration:0.1f animations:^{
                [self.view_temp setFrame:rect_view_temp];
                [self.lb_base setFrame:CGRectMake(self.lb_base.frame.origin.x, point_location.y, WIDTH_BUTTON, HEIGHT_BUTTON)];
                
            }];
        }
        self.point_lastLocation = point_location;
    }else{
//        NSLog(@"%s || long pressed's been done.", __FUNCTION__ );
        if(self.view_temp){
            if(self.view_temp.frame.origin.y < self.view.frame.size.height - HEIGHT_DISPLAY_VIEW * 2 && self.isUpDirection){
                [UIView animateWithDuration:0.25f animations:^{
                    [self.view_temp setFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.size.height - self.view_temp.frame.size.height, self.view.frame.size.width, self.view_temp.frame.size.height)];
                    [self.lb_base setFrame:CGRectMake(self.view.frame.size.width - GAP_DEFAULT - WIDTH_BUTTON, self.view_temp.frame.origin.y + 10, WIDTH_BUTTON, HEIGHT_BUTTON)];
                }];
            }else{
                [UIView animateWithDuration:0.25f animations:^{
                    [self.view_temp setFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.size.height, self.view_temp.frame.size.width, self.view_temp.frame.size.height)];
                    [self.lb_base setFrame:CGRectMake(self.view.frame.size.width - GAP_DEFAULT - WIDTH_BUTTON, self.view.frame.size.height - GAP_DEFAULT - HEIGHT_BUTTON, WIDTH_BUTTON, HEIGHT_BUTTON)];
                }completion:^(BOOL finished){
                    [self.view_temp removeFromSuperview];
                    self.view_temp = nil;
                }];
            }
        }
    }
}

@end