将Unichar数组转换为单个NSString

Question

I created an unicode char array using 'characterAtIndex:' from an NSString object.

I want to make the characters in the array again into a single complete string.

Is there any method to convert this unicahr Array into NSStirng? Can anyone please help me???

This s my code:

NSString *sentence = @"A long string";
NSString *new = [[NSString alloc]init];
unichar aBuffer[[sent length]];
int j=0;
//Tried to reverse the string:
for (int i=[sent length]-1; i>=0; i--,j++) {
    aBuffer[j]=[sent characterAtIndex:i];
    }

I found a better way for sting reversal than this, but let me know whether we have any method for this...

Answer 1

You can convert to a unichar and back using getCharacters:range: and stringWithCharacters: .

NSString *sentence = @"A long unicode sentence";

NSUInteger length = [sentence length];
unichar aBuffer[length + 1];

[sentence getCharacters:aBuffer range:NSMakeRange(0, length)];
aBuffer[length] = 0x0;

NSString *newStr = [NSString stringWithCharacters:aBuffer length:length];

NSLog(@"%@", newStr);

Answer 2

Get a NSString from a bytes array with:

- (id)initWithBytes:(const void *)bytes length:(NSUInteger)length encoding:(NSStringEncoding)encoding

(and you could use UTF8String instead of looping through the string with characterAtIndex: )

Answer 3

Is the array a standard c array? (looks something like this: array[50]; ) If it is, you can do this:

[NSString stringWithCharacters:(const unichar*) length:(NSUInteger)];

Answer 4

You can use Toll-Free Bridging to turn a char array into an objective-c class or reverse.

You can create a CFMutableStringRef variable with your array lets say the variable is myString. Than you can create a string or a mutable string with it.

NSMutableString* objcString = (NSMutableString*) myString;