- (void)textFieldDidChange:(UITextField *)textField
{
UITextField * textfield = [_tableview viewWithTag:1000];
NSString *toBeString = textfield.text;
NSString *lang = [[UIApplication sharedApplication]textInputMode].primaryLanguage; // 键盘输入模
if ([lang isEqualToString:@"zh-Hans"]) { // 简体中文输入，包括简体拼音，健体五笔，简体手写
UITextRange *selectedRange = [textfield markedTextRange];
//获取高亮部分
UITextPosition *position = [textfield positionFromPosition:selectedRange.start offset:0];
// 没有高亮选择的字，则对已输入的文字进行字数统计和限制
if (!position) {
if (toBeString.length > kMaxLength)
{
NSRange rangeIndex = [toBeString rangeOfComposedCharacterSequenceAtIndex:kMaxLength];
if (rangeIndex.length == 1)
{
textfield.text = [toBeString substringToIndex:kMaxLength];
}
else
{
NSRange rangeRange = [toBeString rangeOfComposedCharacterSequencesForRange:NSMakeRange(0, kMaxLength)];
textfield.text = [toBeString substringWithRange:rangeRange];
}
}
}
}
// 中文输入法以外的直接对其统计限制即可，不考虑其他语种情况
else{
if (toBeString.length > kMaxLength)
{
NSRange rangeIndex = [toBeString rangeOfComposedCharacterSequenceAtIndex:kMaxLength];
if (rangeIndex.length == 1)
{
textfield.text = [toBeString substringToIndex:kMaxLength];
}
else
{
NSRange rangeRange = [toBeString rangeOfComposedCharacterSequencesForRange:NSMakeRange(0,kMaxLength)];
textfield.text = [toBeString substringWithRange:rangeRange];
}
}
}
}