올바른 방법입니다. 개체가 UITextView의 대리인으로 설정되어 있습니까?
UPDATES "UITextView를"말 위 - 고정
(I는 "UITextField에"이전에 있었다) 아래
걸러 코드 예제 :
이 방법은 구현이 UITextView의 위임 객체에 간다 (보기 컨트롤러 또는 앱 대리인) :
// replace "hi" with "hello"
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
// create final version of textView after the current text has been inserted
NSMutableString *updatedText = [[NSMutableString alloc] initWithString:textView.text];
[updatedText insertString:text atIndex:range.location];
NSRange replaceRange = range, endRange = range;
if (text.length > 1) {
// handle paste
replaceRange.length = text.length;
} else {
// handle normal typing
replaceRange.length = 2; // length of "hi" is two characters
replaceRange.location -= 1; // look back one characters (length of "hi" minus one)
}
// replace "hi" with "hello" for the inserted range
int replaceCount = [updatedText replaceOccurrencesOfString:@"hi" withString:@"hello" options:NSCaseInsensitiveSearch range:replaceRange];
if (replaceCount > 0) {
// update the textView's text
textView.text = updatedText;
// leave cursor at end of inserted text
endRange.location += text.length + replaceCount * 3; // length diff of "hello" and "hi" is 3 characters
textView.selectedRange = endRange;
[updatedText release];
// let the textView know that it should ingore the inserted text
return NO;
}
[updatedText release];
// let the textView know that it should handle the inserted text
return YES;
}
당신은 txtView : shouldChangeTextInRange : replacementText :? – Malaxeur