将字典类型加入数组当中写入文件夹不会覆盖原来的数据

最新推荐文章于 2021-03-16 22:59:55 发布

chai梦瑶

最新推荐文章于 2021-03-16 22:59:55 发布

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分类专栏： iOS 文章标签： ios开发 nsarray

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+(void)cachesDiction:(NSDictionary*)dic
{
    NSMutableArray *array= [NSMutableArrayarray];
    NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
   NSString *documentDirectory = [paths objectAtIndex:0];
    
    NSFileManager *fileManage = [NSFileManagerdefaultManager];
   NSString *path = [documentDirectory stringByAppendingPathComponent:@"cachedata.txt"];
    
    
   if ([fileManage fileExistsAtPath:path])
    {
        //           NSMutableArray *arr=[NSMutableArray array];
       NSData *d =[NSDatadataWithContentsOfFile:path];
       if (d == nil) {
            
        }else
        {
            array=[NSKeyedUnarchiverunarchiveObjectWithData:d];
            
        }
        
    }
    [arrayaddObject:dic];
   NSData *udObject = [NSKeyedArchiverarchivedDataWithRootObject:array];
    [udObjectwriteToFile:path atomically:YES];

}