【IPHONE开发-OBJECTC入门学习】NSUserDefaults使用

ELYTAppDelegate.m

#import "ELYTAppDelegate.h"

@implementation ELYTAppDelegate

@synthesize window = _window;

- (void)dealloc
{
    [_window release];
    [super dealloc];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    
    //保存数据
    //NSUserDefaults* userDef = [NSUserDefaults standardUserDefaults];
    //[userDef setObject:@"NSUserDefaults测试" forKey:@"test"];
    //[userDef setInteger:112 forKey:@"number"];
    
    
    
    //读取数据
    NSUserDefaults* userDef = [NSUserDefaults standardUserDefaults];
    NSString* name = [userDef objectForKey:@"test"];
    NSInteger number = [userDef integerForKey:@"number"];
    
    NSLog(@"name = %@",name);
    NSLog(@"number = %d",number);
    
    return YES;
}

ELYTAppDelegate.h

#import <UIKit/UIKit.h>

@interface ELYTAppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@end