//

//  RootViewController.m

#import "RootViewController.h"

@interface RootViewController ()

{

    NSMutableArray * dataSource;

}

@end

@implementation RootViewController

-(void)createUI

{

    NSArray * arr = @[@"NSNumber数据:",@"integer:",@"float:",@"double:",@"NSString数据:",@"NSDate数据:",@"NSArray数据:",@"NSDictionary数据:"];

    for(int i = ;i<[arr count];i++)

    {

        UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(,  +  * i, , )];

        label.text = arr[i];

        label.textAlignment = NSTextAlignmentRight;

        [self.view addSubview:label];

        [label release];

    }

    for(int i = ;i<[arr count];i++)

    {

        UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(,  +  * i, , )];

        label.tag = i;

        label.textAlignment = NSTextAlignmentLeft;

        label.backgroundColor = [UIColor cyanColor];

        [self.view addSubview:label];

        [label release];

    }

}

//向userDefaults里面写入数据

-(void)writeUserDefaults

{

    NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];

    NSInteger i = ;

    float f = 50.0f;

    double d = 1000.0;

    NSString * string = @"字符串";

    NSArray * arr = @[@"hello",@"world"];

    NSDictionary * dic = @{@"name":@"test",@"age":@""};

    NSDate * date = [NSDate date];

    //存入的数据 无论是可变的还是不可变的 读出来以后都是不可变的数据

    [defaults setInteger:i forKey:@"int"];

    [defaults setFloat:f forKey:@"float"];

    [defaults setDouble:d forKey:@"double"];

    //基本类型的数据存放在userDefaults以后都会自动转化成NSNumber

    [defaults setObject:string forKey:@"string"];

    [defaults setObject:arr forKey:@"array"];

    [defaults setObject:dic forKey:@"dic"];

    [defaults setObject:date forKey:@"date"];

    //写入磁盘

    [defaults synchronize];

}

//读数据

-(void)readUserDefaults

{

    NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];

    dataSource = [[NSMutableArray alloc]init];

    NSString * intStr = [NSString stringWithFormat:@"%@",[defaults objectForKey:@"int"]];

    NSString * floatStr = [NSString stringWithFormat:@"%f",[defaults floatForKey:@"float"]];

    NSString * doubleStr = [NSString stringWithFormat:@"%lf",[defaults doubleForKey:@"double"]];

    NSString * stringStr = [defaults objectForKey:@"string"];

    NSArray * arr = [defaults objectForKey:@"array"];

    NSString * arrStr = [arr componentsJoinedByString:@" "];

    NSDictionary * dic = [defaults objectForKey:@"dic"];

    NSString * dicStr = [NSString stringWithFormat:@"name:%@,age:%@",[dic objectForKey:@"name"],[dic objectForKey:@"age"]];

    NSDate * date = [defaults objectForKey:@"date"];

    NSDateFormatter * formatter = [[NSDateFormatter alloc]init];

    formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";

    NSString * dateStr = [formatter stringFromDate:date];

    [formatter release];

    [dataSource addObject:intStr];

    [dataSource addObject:floatStr];

    [dataSource addObject:doubleStr];

    [dataSource addObject:stringStr];

    [dataSource addObject:dateStr];

    [dataSource addObject:arrStr];

    [dataSource addObject:dicStr];

}

- (void)viewDidLoad

{

    [super viewDidLoad];

    self.navigationItem.title = @"UserDefualts的用法";

    self.view.backgroundColor = [UIColor brownColor];

    UIBarButtonItem * item = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(pressBarBtn:)];

    self.navigationItem.rightBarButtonItem = item;

    [item release];

    [self createUI];

    [self writeUserDefaults];

    [self readUserDefaults];

}

-(void)pressBarBtn:(id)sender

{

    //查找沙盒目录的路径

    NSArray * arr = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString * path = [arr objectAtIndex:];

    NSLog(@"%@",path);

    for(int i = ;i<[dataSource count];i++)

    {

        UILabel * lable = (UILabel *)[self.view viewWithTag:i + ];

        lable.text = dataSource[i];

    }

}

@end