NSString *str = nil; //字符串 NSMutableString *string = [[NSMutableString alloc] init]; [string appendString:@"xxxx"]; str = [string JSONString]; NSLog(@"str1:%@",[NSString stringWithString:str]); //数组 NSArray *array = [[NSArray alloc] initWithObjects:@"111",@"333",@"222",nil]; // NSMutableArray *array = [NSMutableArray array]; str = [array JSONString]; NSLog(@"str2:%@",[NSString stringWithString:str]); [array release ]; //字典 NSArray *firstArr = [NSArray arrayWithObjects:@"first",@"second",nil]; //基本数据类型转换成NSNumber类型 NSArray *secondArr = [NSArray arrayWithObjects:[NSNumber numberWithDouble:2.1],[NSNumber numberWithBool:NO],nil]; //加到字典中 NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:firstArr,@"first",secondArr,nil]; //转化成json格式 str = [dic JSONString]; NSString *str2 = [NSString stringWithString:str]; NSLog(@"str3:%@",str2); //编码 NSData *archive = [NSKeyedArchiver archivedDataWithRootObject:array]; // NSLog(@"archive:%@",archive); NSArray *arr2 = [NSKeyedUnarchiver unarchiveObjectWithData:archive]; NSLog(@"arr2:%@",arr2);
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