//
//  JLAppDelegate.h
//  01-UIWindow
//
//  Created by XinYou on 15-3-11.
//  Copyright (c) 2015ĺš´ vxinyou. All rights reserved.
//

#import 

@interface JLAppDelegate : UIResponder 

@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic) UIWindow *window2;

@end
//
//  JLAppDelegate.m
//  01-UIWindow
//
//  Created by XinYou on 15-3-11.
//  Copyright (c) 2015年 vxinyou. All rights reserved.
//

#import "JLAppDelegate.h"

@implementation JLAppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // 第1個window
    
    self.window = [[UIWindow alloc] init];
    self.window.frame = [UIScreen mainScreen].bounds;
    self.window.backgroundColor = [UIColor redColor];
    
    // 讓window成為keyWindow(主視窗)，預設不可見
//    [self.window makeKeyWindow];
    
    // 讓window成為keyWindow(主視窗)，並且可見
    [self.window makeKeyAndVisible];
    
    // 給第1個window新增一個輸入框
    UITextField *tf = [[UITextField alloc] init];
    tf.frame = CGRectMake(10, 10, 100, 30);
    tf.borderStyle = UITextBorderStyleRoundedRect;
    [self.window addSubview:tf];
    
    // 列印當前應用的主視窗，此時應用的主視窗是window
    NSLog(@"%p", [UIApplication sharedApplication].keyWindow);
    
    // 第2個window
    self.window2 = [[UIWindow alloc] initWithFrame:CGRectMake(100, 100, 200, 200)];
    self.window2.backgroundColor = [UIColor blueColor];
    
    // 讓window2成為keyWindow(主視窗)，並且可見。此時window將不再是主視窗，但是仍然能顯示
    [self.window2 makeKeyAndVisible];
    
    // 給第2個window新增一個輸入框
    UITextField *tf2 = [[UITextField alloc] init];
    tf2.frame = CGRectMake(50, 50, 70, 40);
    tf2.borderStyle = UITextBorderStyleRoundedRect;
    [self.window2 addSubview:tf2];
    
    // 列印當前應用的主視窗，此時window2已經成為了應用的主視窗
    NSLog(@"%p", [UIApplication sharedApplication].keyWindow);
    
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end