iOS巔峰之NSString,NSData,NSArray 之間的轉換
阿新 • • 發佈：2019-02-06
1.將陣列轉換成NSData
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dataArray options:NSJSONWritingPrettyPrinted error:nil];
2.將NSData轉換成NSString
NSString *fileString = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];
3.將字串轉換成NSData
NSData* aData= [str dataUsingEncoding: NSUTF8StringEncoding];
4.將NSData轉換成(NSString, NSArray)
id jsonObject = [NSJSONSerialization JSONObjectWithData:aData options:NSJSONReadingAllowFragments error:nil];
NSArray *array = (NSArray *)jsonObject; // 或者 NSString *string = (NSString *)jsonObject;