Question

我想在用户完成输入后搜索一些单词，我已经尝试过这个选择器了，但是每次输入都会调用它。

#pragma mark   textFieldValueChanged
- (void)inputSearchTextChanged:(UITextField *)textField
{
    if (textField.text.length == 0) {
       self.searchView.tipsView.hidden = NO;
     } else {
       self.searchView.tipsView.hidden = YES;
    }
    if (self.searchView.lySelectView.selectState == LYTabSelectOptionLeft) {
        [self searchTagWithTagTitle:textField.text];
    } else {
        [self searchPeopleWithTagTitle:textField.text];
    }
}

Answer 1

尝试

-(void) textFieldDidEndEditing:(UITextFiled*)textfield) {

}

Answer 2

set delegate of textfield and try below delegate method


-(void) textFieldDidEndEditing:(UITextFiled*)textfield)
     {
         if (textField.text.length == 0) {
           self.searchView.tipsView.hidden = NO;
         } else {
           self.searchView.tipsView.hidden = YES;

        if (self.searchView.lySelectView.selectState == LYTabSelectOptionLeft) {
            [self searchTagWithTagTitle:textField.text];
        } else {
            [self searchPeopleWithTagTitle:textField.text];
        }
    }

Answer 3

您可以使用UITextFieldDelegate协议。更多细节here。您必须在ViewController中实现方法 - （void）textFieldDidEndEditing：（UITextFiled ）textfield）*。

 -(void) textFieldDidEndEditing:(UITextFiled*)textfield)
 {
     if (textField.text.length == 0) {
       self.searchView.tipsView.hidden = NO;
     } else {
       self.searchView.tipsView.hidden = YES;

    if (self.searchView.lySelectView.selectState == LYTabSelectOptionLeft) {
        [self searchTagWithTagTitle:textField.text];
    } else {
        [self searchPeopleWithTagTitle:textField.text];
    }
}

将您的ViewController分配为委托：

self.textField.delegate = self; //self is the ViewController.

稍后在澄清之后进行修改：

当用户停止输入时，您需要一个事件：您可以使用计时器模拟此事件。

 @property (strong, nonatomic) NSTimer *timer;

 ....

- (BOOL)textField:(UITextField *)textField
shouldChangeCharactersInRange:(NSRange)range
replacementString:(NSString *)strin {
    if (self.timer != nil) {
        [self.timer invalidate];
        self.timer = nil;
    }

    self.timer = [NSTimer timerWithTimeInterval:1 target:self selector:@selector(eventNeeded) userInfo:nil repeats:NO];
    NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
    [runLoop addTimer:self.timer forMode:NSDefaultRunLoopMode];

    return YES;
}

-(void) eventNeeded{
    NSLog(@"User has stopped typing.");
}

在iOS上如何判断文本域完整输入

3 个答案: