02-plist文件

//  ViewController.m
//  plist文件

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    /*
     1.根节点只能是数组或者字典
     
     需求:创建一个数组,通过plist文件的形式,将数组保存到Documents文件夹array.plist文件
     
     .plist的不足：
         只能保存数组和字典
         只能保存Bollean、Data、Date、Number、String这些基本的数据类型
     */
    
//    [self saveArray];
//    [self readArray];
    
    [self saveDict];
    [self readDict];
    
}

// 保存数组
-(void)saveArray
{
    // 1.创建一个数组
    NSArray *array = @[@"1",@"2",@"3"];
    
    // 2.拼接文件路径
    NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    NSLog(@"%@",documentsPath);
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"array.plist"];
    
    // 3.写入文件
    BOOL success = [array writeToFile:filePath atomically:YES];
    
    NSLog(@"保存数组 success = %@",success?@"YES":@"NO");
    /*
     如果目标文件不存在,会自动创建.
     atomically:线程安全
     */
}

// 读取数组
-(void)readArray
{
    // 1.文件路径
    NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"array.plist"];
    
    // 2.读取
    NSArray *array = [NSArray arrayWithContentsOfFile:filePath];
    
    NSLog(@"读取数组 = %@",array);
}

// 保存字典
-(void)saveDict
{
    // 1.创建一个数组
    NSDictionary *dict = @{@"a":@"1",@"b":@"2",@"c":@"3"};
    
    // 2.拼接文件路径
    NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    NSLog(@"%@",documentsPath);
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"dict.plist"];
    
    // 3.写入文件
    [dict writeToFile:filePath atomically:YES];
}

// 读取字典
-(void)readDict
{
    // 1.文件路径
    NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"dict.plist"];
    
    // 2.读取
    NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:filePath];
    
    NSLog(@"读取字典 = %@",dict);
}

@end