IOS读写沙盒文件数据

1. 读写沙盒文件中Documents文件下的数据
   

   //获取Documents目录路径
       NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
       //获取沙盒中Documents文件的路径
       NSString *str_file_path = [paths objectAtIndex:0];
       //将自己想创建的文件名添加到Documents录后，拼成一整个字符串
       NSString *str_data_file_path = [str_file_path stringByAppendingFormat:@"/person_info.plist"];
       
       //创建需要保存到沙盒的数组数据
       NSDictionary *dic_data = [[NSDictionary alloc]initWithObjectsAndKeys:@"Mary",@"name",@"18",@"age", nil];
       NSDictionary *dic_data1 = [[NSDictionary alloc]initWithObjectsAndKeys:@"Jack",@"name", nil];
       NSArray *array = [[NSArray alloc]initWithObjects:dic_data,dic_data1, nil];
       
       //将数组数据写入到拼接好的沙盒文件中
       [array writeToFile:str_data_file_path atomically:YES];
       
       //读取沙盒文件中的数据
       NSArray *arr = [[NSArray alloc]initWithContentsOfFile:str_data_file_path];
       NSLog(@"%@",arr);

    
   
2. 读写沙盒目录下Library文件中的Caches文件的路径
   

   NSArray *arr_paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
   NSString *str_cachesDir = [arr_paths objectAtIndex:0];
   //将自己想创建的文件名添加到Caches目录后，拼成一整个字符串
   NSString *str_data_file_path = [str_cachesDir stringByAppendingFormat:@"/person_info.plist"];
   
   //创建需要保存到沙盒的数组数据
   NSDictionary *dic_data = [[NSDictionary alloc]initWithObjectsAndKeys:@"Mary",@"name",@"18",@"age", nil];
   NSDictionary *dic_data1 = [[NSDictionary alloc]initWithObjectsAndKeys:@"Jack",@"name", nil];
   NSArray *array = [[NSArray alloc]initWithObjects:dic_data,dic_data1, nil];
   
   //将数组数据写入到拼接好的沙盒文件中
   [array writeToFile:str_data_file_path atomically:YES];
   
   //读取沙盒文件中的数据
   NSArray *arr = [[NSArray alloc]initWithContentsOfFile:str_data_file_path];
   NSLog(@"%@",arr);

    
3. 获取沙盒文件的主目录
   

   // 获取沙盒主目录路径
   NSString *homeDir = NSHomeDirectory();

4. 获取沙盒文件的tmp目录
   

   NSString *tmpDir = NSTemporaryDirectory();