//
//  LYSDateBasicViewController.m
//  LYSDatePickerController
//
//  Created by HENAN on 2018/5/7.
//  Copyright © 2018年 liyangshuai. All rights reserved.
//

#import "LYSDateBasicViewController.h"

@interface LYSDateBasicViewController ()

@end

@implementation LYSDateBasicViewController

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

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

// 获取最外层控制器
+ (UIViewController *)windowRootViewController
{
    UIWindow *keyWindow = [UIApplication sharedApplication].keyWindow;
    return keyWindow.rootViewController;
}
// 创建给定颜色和透明度的图片
- (UIImage *)imageWithColor:(UIColor *)color alpha:(CGFloat)alpha
{
    // 创建一个color对象
    UIColor *tempColor = [color colorWithAlphaComponent:alpha];
    // 声明一个绘制大小
    CGSize colorSize = CGSizeMake(1, 1);
    UIGraphicsBeginImageContext(colorSize);
    // 开始绘制颜色区域
    CGContextRef context = UIGraphicsGetCurrentContext();
    // 根据提供的颜色给相应绘制内容填充
    CGContextSetFillColorWithColor(context, tempColor.CGColor);
    // 设置填充相应的区域
    CGContextFillRect(context, CGRectMake(0, 0, 1, 1));
    // 声明UIImage对象
    UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return img;
}

@end