我希望能够制作一个泰米尔语键盘
功能:当我按下A按钮时,我希望显示 அ,当我按下AA时,我想显示 ஆ。
这是我目前为止尝试过的:
NSMutableString *updatedText = [[NSMutableString alloc] initWithString:textView.text];
[updatedText insertString:text atIndex:range.location];
NSLog(@"%i",range.location);
NSRange replaceRange = range , endRange = range;
if (text.length > 0)
{
NSLog(@" text length %i",text.length);
replaceRange.length= text.length;
}
else
{
replaceRange.length = 2; // length of "hi" is two characters
replaceRange.location -= 1; // look back one characters (length of "hi" minus one)
}
int replaceCount = [updatedText replaceOccurrencesOfString:@"a" withString:@" அ" options:NSCaseInsensitiveSearch range:replaceRange];
// replaceCount = [updatedText replaceOccurrencesOfString:@"aa" withString:@" ஆ" options:NSCaseInsensitiveSearch range:replaceRange];
if (replaceCount >=1) {
// update the textView's text
textView.text = updatedText;
// leave cursor at end of inserted text
endRange.location = text.length+ replaceCount*100000000; // length diff of "hello" and "hi" is 3 characters
// endRange.location;
NSRange h= endRange;
textView.selectedRange= h;
[updatedText release];
return NO;
}
[updatedText release];
return YES;
}
如果我使用这种方法,它只会读取一个字符并用空格替换该字符。