写文件数组与字典

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// writeFile.m

// Created by Wangjue on 13-9-8.

#import "writeFile.h"

@implementation writeFile

- (void)writeDict

{

NSMutableDictionary *dict = [NSMutableDictionary dictionary];

for (NSInteger i =0 ; i<20; i++) {

NSString *keyName = [NSString stringWithFormat:@"key-%02d",i];

NSMutableArray *arry = [NSMutableArray array];

NSInteger rnd = arc4random_uniform(10)+5;

for (NSInteger j = 0; j < rnd; j++) {

NSString *text = [NSString stringWithFormat:@"itcast-%d"];

[arry addObject:text];

}

[dict setValue:arry forKey:keyName];

}

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

NSString *path = [documents[0] stringByAppendingPathComponent:@"dict.plist"];

[dict writeToFile:path atomically:YES];

}

- (void)writeArray

{

// 1.实例化数组

NSMutableArray *array =[NSMutableArray array];

for (NSInteger i = 0; i < 20; i++) {

NSString *text = [NSString stringWithFormat:@"hehe-%d",i];

[array addObject:text];

}

// 2.获取文件路径

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

// 3.NSString添加文件路径

NSString *path = [documents[0] stringByAppendingPathComponent:@"array.plist"];

// 4.创建并写入文件

[array writeToFile:path atomically:YES];

}

@end

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