ACM_Someone like you

//
//  HFWindowViewController.m
//  SectionDemo
//
//  Created by HF on 2017/5/25.
//  Copyright ? 2017年 HF-Liqun. All rights reserved.
//

#import "HFWindowViewController.h"

@interface HFWindowViewController ()

// 創建屬性
@property (nonatomic, strong)UIWindow *myWindow1;

@end

@implementation HFWindowViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // 創建測試按鈕
    UIButton *tempBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    tempBtn.frame = CGRectMake(15,64, self.view.frame.size.width - 15 * 2, 64);
    [tempBtn setTitle:@"點我創建一個window" forState:UIControlStateNormal];
    // 通過按鈕的點擊事件生成不同windowLevel級別的window
    [tempBtn addTarget:self action:@selector(clickBtn:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:tempBtn];
}

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

#pragma mark- event

- (void)clickBtn:(id)sender
{
    [self test1];
}

- (void)clickWindowBtn:(id)sender
{
    //window 銷毀
    self.myWindow1.hidden = YES; //可有可無 看 UI效果
    self.myWindow1 = nil; // 這個方法是真正移除 UIWindow
}

#pragma mark - private

/**
 *  
 *1、創建 window 不用添加到任何的控件上面，直接創建完畢 即自動添加到window 上
 *2、創建一個比默認window的windowLevel大的window來看一下什么效果，效果是會蓋在原來的window上面
 */
- (void)test1
{
    // 創建window
    if (self.myWindow1 == nil) {

        if (IOS9) {//>=iOS9
            self.myWindow1 =  [UIWindow new]; // 以后 默認了 window的大小
        } else {
            self.myWindow1 =  [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];//這么寫在哪個版本系統上，一點毛病都沒有
        }
        
        UIButton *windowBtn = [UIButton buttonWithType:UIButtonTypeCustom];
        [windowBtn setTitle:@"點我 銷毀黃色 window" forState:UIControlStateNormal];
        windowBtn.backgroundColor = [UIColor redColor];
        windowBtn.frame = CGRectMake(15, 64, self.view.frame.size.width - 15 * 2, 64);
        [windowBtn addTarget:self action:@selector(clickWindowBtn:) forControlEvents:UIControlEventTouchUpInside];
        [self.myWindow1 addSubview:windowBtn];
        
    }
    // 設置window的顏色，這里設置成黃色，方便查看window的層級關系
    self.myWindow1.backgroundColor = [UIColor yellowColor];
    // 設置 window 的 windowLevel
    self.myWindow1.windowLevel = UIWindowLevelStatusBar; //TODO: Normal，StatusBar，Alert 分別 為 0，1000，2000 可以修改這里體驗 層級變化 對 展示 window的影響
    self.myWindow1.hidden = NO;
    [self.myWindow1  makeKeyAndVisible]; //成為keyWindow
}

@end