#import "ViewController.h"

#define CURRENT_SCREEN_WIDTH     [UIScreen mainScreen].bounds.size.width
#define CURRENT_SCREEN_HEIGHT     ([UIScreen mainScreen].bounds.size.height - 64)
#define BUTTON_WIDTH     80
#define BUTTON_HEIGHT    40

@interface ViewController ()

//保存数据按钮
@property(nonatomic,strong) UIButton *saveButton;
//读取数据按钮
@property(nonatomic,strong) UIButton *readButton;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self initControl];
}

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

//初始化控件
- (void)initControl{
    _saveButton = [[UIButton alloc] initWithFrame:CGRectMake(CURRENT_SCREEN_WIDTH/2 - BUTTON_WIDTH/2,
                                                             CURRENT_SCREEN_HEIGHT/2 - BUTTON_HEIGHT,
                                                             BUTTON_WIDTH,
                                                             BUTTON_HEIGHT)];
    [_saveButton setTitle:@"保存数据" forState:UIControlStateNormal];
    [_saveButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    [_saveButton addTarget:self
                    action:@selector(saveClick)
          forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_saveButton];

    _readButton = [[UIButton alloc] initWithFrame:CGRectMake(CURRENT_SCREEN_WIDTH/2 - BUTTON_WIDTH/2,
                                                             _saveButton.frame.origin.y + _saveButton.frame.size.height + 60,
                                                             BUTTON_WIDTH,
                                                             BUTTON_HEIGHT)];
    [_readButton setTitle:@"读取数据" forState:UIControlStateNormal];
    [_readButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    [_readButton addTarget:self
                    action:@selector(readClick)
          forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_readButton];

}

#pragma mark -按钮事件
- (void)saveClick{
    //获取NSUserDefaults对象
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    //保存数据(如果设置数据之后没有同步，会在将来某一时间点自动将数据保存到Preferences文件夹下面)
    [defaults setObject:@"DuBo" forKey:@"name"];
    [defaults setInteger:31 forKey:@"age"];
    [defaults setDouble:1.76f forKey:@"height"];

    //强制让数据立刻保存
    [defaults synchronize];
}

- (void)readClick{
    //获取NSUserDefaults对象
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    //读取保存数据
    NSString *name = [defaults objectForKey:@"name"];
    NSInteger age = [defaults integerForKey:@"age"];
    double height = [defaults doubleForKey:@"height"];

    //打印数据
    NSLog(@"name = %@",name);
    NSLog(@"age = %d",(int)age);
    NSLog(@"height = %f",height);
}

@end