ios/Timi/Class/Base/Utils/GuidePage/SingleGuideView/SingleGuideView.m

//
//  SingleGuideView.m
//  DDTG
//
//  Created by 翟玉磊 on 2017/7/10.
//  Copyright © 2017年 翟玉磊. All rights reserved.
//

#import "SingleGuideView.h"

@interface SingleGuideView ()
@property (strong, nonatomic) NSArray *imageArray;
@property (nonatomic, strong) UIImageView *imageView;
@property (nonatomic, strong) UIButton *touchButton;

@property (nonatomic, copy) SingleGuideViewBlock callback;

@end

@implementation SingleGuideView

static SingleGuideView *singleGuideView = nil;
static dispatch_once_t onceToken;

+ (instancetype)sharedView {
    dispatch_once(&onceToken, ^{
        CGRect frame = [UIScreen mainScreen].bounds;
        singleGuideView = [[SingleGuideView alloc] initWithFrame:frame];
        [[UIApplication sharedApplication].delegate.window addSubview:singleGuideView];
    });
    return singleGuideView;
}

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        
        self.backgroundColor = [UIColor clearColor];
        [self buildView];
    }
    return self;
}

- (void)buildView {
    [self addSubview:self.imageView];
    [self addSubview:self.touchButton];
}

- (void)setupImage:(NSArray *)images block:(SingleGuideViewBlock)callback {
    if (images.count == 0) {
        [self dismiss:callback];
        return;
    }
    self.callback = callback;
    _imageArray = [NSArray arrayWithArray:images];
    [self show];
    self.imageView.image = _imageArray[0];
    self.touchButton.tag = 0;
}

- (void)touchButtonAction:(UIButton *)sender {
    if (sender.tag == self.imageArray.count - 1) {
        [self dismiss:self.callback];
    } else {
        sender.tag += 1;
        self.imageView.image = self.imageArray[sender.tag];
    }
}

- (void)show {
    self.alpha = 1;
    self.hidden = NO;
}

- (void)dismiss:(SingleGuideViewBlock)callback {
    
    [UIView animateWithDuration:.3 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
        self.alpha = 0;
    } completion:^(BOOL finished) {
        self.hidden = YES;
        if (callback) {
            callback();
        }
    }];
}

+ (void)destroyInstance {
    onceToken = 0;
    singleGuideView = nil;
}

#pragma mark - Get
- (UIImageView *)imageView {
    if (_imageView == nil) {
        _imageView = [[UIImageView alloc] initWithFrame:self.bounds];
        _imageView.backgroundColor = [UIColor clearColor];
    }
    return _imageView;
}

- (UIButton *)touchButton {
    if (_touchButton == nil) {
        _touchButton = [UIButton buttonWithType:UIButtonTypeCustom];
        _touchButton.frame = self.bounds;
        _touchButton.backgroundColor = [UIColor clearColor];
        [_touchButton addTarget:self action:@selector(touchButtonAction:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _touchButton;
}
@end