如何从段落删除特定字符串

Question

Hi Friends, I have a small question, 

I have a paragraph of string, now I want to delete some words from that para 

aaaaaaaaaaaaaaaaa*bbbbbbbbb*aaaaaaaaaaaaaa. 
Now, suppose I want to delete the "bbbbbbbb" fromthe above para and I am using the following method 

mySpeechText = [[mySpeechText stringByReplacingOccurrencesOfString:strTemp withString:@""] retain]; 

but this method is replacing the "bbbbbbbb" with blank spaces, ie, "  " and I am getting 
aaaaaaaaaaaaaaaa  aaaaaaaaaaaaaaaaaa; 

and I want aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; without any space. so how can I delete the "bbbbbbbb" rather replacing it. Thanks- 

If I am not clear plz let me know. 

Answer 1

试试这个

mySpeechText=[mySpeechText stringByTrimmingCharactersInSet: 
       [NSCharacterSet characterSetWithCharactersInString:@"bbbbbbbb"]];