ios開發之--NSDictionary和NSData之間的互轉/NSString和NSData之間的互轉

NSDictionary轉NSData，代碼如下：

+(NSData*)returnDataWith:(NSDictionary*)dict
{
    NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:nil];
    
    return data;
}

NSData轉NSDictionary，代碼如下：

+(NSDictionary*)returnDictionaryWithDataPath:(NSData*)data
{
    NSString *receiveStr = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
    
    NSData * datas = [receiveStr dataUsingEncoding:NSUTF8StringEncoding];
    
    NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:datas options:NSJSONReadingMutableLeaves error:nil];
    
    return jsonDict;
}

 

NSData轉NSString，代碼如下：

NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];  

NSString轉NSData，代碼如下：

NSData *data = [@"test" dataUsingEncoding:NSUTF8StringEncoding];  

 

僅做記錄！