在objective-c中将长值转换为unichar*
我将大型unicode字符(在objective-c中将长值转换为unichar*,objective-c,nsstring,long-integer,unichar,Objective C,Nsstring,Long Integer,Unichar,我将大型unicode字符(0x10000+)存储为long类型,最终需要转换为NSStrings。较小的unicode字符可以创建为unichar,而NSString可以使用 [NSString stringWithCharacters:(const unichar *)characters length:(NSUInteger)length] 因此,我认为从unicode长值中获取NSString的最佳方法是首先从long值中获取unichar*。你知道我该怎么做吗?你有什么理由将这些值存
0x10000
+)存储为long
类型,最终需要转换为NSStrings
。较小的unicode字符可以创建为unichar
,而NSString
可以使用
[NSString stringWithCharacters:(const unichar *)characters length:(NSUInteger)length]
因此,我认为从unicode长值中获取
NSString
的最佳方法是首先从long
值中获取unichar*
。你知道我该怎么做吗?你有什么理由将这些值存储为long
s吗?对于Unicode存储,您只需要将值存储为UInt32
,这样就可以通过执行以下操作轻松地将数据解释为UTF-32
:
int numberOfChars = 3;
UInt32* yourStringBuffer = malloc(sizeof(UInt32) * numberOfChars);
yourStringBuffer[0] = 0x2F8DB; //杞
yourStringBuffer[1] = 0x2318; //⌘
yourStringBuffer[2] = 0x263A; //☺
NSData* stringData = [NSData dataWithBytes:yourStringBuffer length:sizeof(UInt32) * numberOfChars];
//set the encoding according to the current byte order
NSStringEncoding encoding;
if(CFByteOrderGetCurrent() == CFByteOrderBigEndian)
encoding = NSUTF32BigEndianStringEncoding;
else
encoding = NSUTF32LittleEndianStringEncoding;
NSString* string = [[NSString alloc] initWithData:stringData encoding:encoding];
free(yourStringBuffer);
NSLog(@"%@",string);
//output: 杞⌘☺