效果图如上,主要是右上角的Label显示框,创建完各控件后,可以在代理方法里贴上下面代码:
-(void)textViewDidChange:(UITextView *)obj
{
UITextView *textField = (UITextView *)obj;
NSString *toBeString = textField.text;
NSString *lang = [[UITextInputMode currentInputMode] primaryLanguage]; // 键盘输入模式
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 > 200) {
[contentTextView resignFirstResponder];
SKTipbox *tipboxView = [[SKTipbox alloc] init];
[tipboxView show:self.view withTips:@"请不要超过200字"];
textField.text = [toBeString substringToIndex:200];
}
}
// 有高亮选择的字符串,则暂不对文字进行统计和限制
else{
}
}
// 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 > 200)
{
[contentTextView resignFirstResponder];
SKTipbox *tipboxView = [[SKTipbox alloc] init];
[tipboxView show:self.view withTips:@"请不要超过200字"];
textField.text = [toBeString substringToIndex:200];
}
}
if (toBeString.length > 200) {
promptLab.text = [NSString stringWithFormat:@"还能输入0个字"];
}else
{
promptLab.text = [NSString stringWithFormat:@"还能输入%d个字",200-toBeString.length];
}
}