How to remove hexadecimal characters from NSString

Question

I am facing one issue related some hexa value in string, i need to remove hexadecimal characters from NSString.

The problem is when i print object it prints as \"BLANK

Answer 1

I'm not sure exactly what you are looking for, but if you want to remove all the control characters then

string = [[string componentsSeparatedByCharactersInSet:[NSCharacterSet controlCharacterSet]] componentsJoinedByString:@""]

If you need to be faster and are sure the control characters are only at the beginning and ending of a string then

string = [string stringByTrimmingCharactersInSet:[NSCharacterSet controlCharacterSet]];

NOTE: Removing all control characters will remove all new lines (\n)!

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From NSCharacterSet Class Reference:

These characters are specifically the Unicode values U+0000 to U+001F and U+007F to U+009F.

The value you are having a problem with is \x06 which is U+0006.

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If you want to remove just \x06, then you can always create a characters set just for it.

NSCharacterSet *hex6 = [NSCharacterSet characterSetWithCharactersInString:@"\x06"];
string = [[string componentsSeparatedByCharactersInSet:hex6] componentsJoinedByString:@""]