Keyboard moving cursor?

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whenever type in text view in application, cursor jumps wherever (and should be,) end of text.

line in loop seems issue. if comment out that, runs fine.
code:
- (void)textviewdidchange:(uitextview *)textview {     (nsstring *key in shortcuts)     {         typeview.text = [typeview.text stringbyreplacingoccurrencesofstring:key withstring:[shortcuts objectforkey:key]];     } }
does have simple solution (ie, there's method in sdk i'm overlooking that'll me,) or going have determine cursors position before loop , put afterwards myself?

edit: i've added if before line make sure there's replace beforehand, now.
 



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