我试图找到合适的解决方案，但我找不到任何程序员请告诉我如何制作。

1.可以把uitextfield做成uisearchbar吗？

 UISearchBar *search=[[UISearchBar alloc]init];
  search.delegate=self;
  [_txtLocation setInputView:search];

2.当用户键入值时，我需要将其显示为文本字段底部的叠加层...

3.请帮我找出解决办法..

最佳答案

要使文本字段像搜索栏一样工作，请执行 - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)范围 replacementString:(NSString *)string UITextField 的委托(delegate)方法。所以基本上，你需要实现自动完成功能，这就是你如何做的。 要检测哪个文本字段被触发，请使用将标签分配给文本字段。

在您的 ViewController.h 文件中:

@interface ViewController :
 <UIViewController<UITextFieldDelegate,UITableViewDataSource, UITableViewDelegate>
{
    UITableView *autocompleteTableView;
    UITextField * searchtextField1;
    UITextField * searchtextField2;
    NSMutableArray *autoCompleteList;
    NSMutableArray *initalList;

}

在您的 ViewController.m 文件中:

- (void)viewDidLoad {
searchtextField1 = [[UITextField alloc]
                              initWithFrame:CGRectMake(5,0, 245, 33)];

searchtextField2.tag = 2;
searchtextFeild1.tag = 1;   


    searchtextField.placeholder = @"eg: make up";

    searchtextField.textColor = [UIColor whiteColor];

    //[imageView addSubview:searchtextField];
    //[self.view addSubview:imageView];


    autoCompleteList = [[NSMutableArray alloc] init];
    searchtextField1.delegate = self;
    searchtextField2.delegate = self;

    autocompleteTableView = [[UITableView alloc]init];



    if(screenRect.size.height == 568)
    {
        float X_Co_tbl = (self.view.frame.size.width - 271)/2;
        [autocompleteTableView setFrame:CGRectMake(X_Co_tbl, 105, 271, 120)];
    }

    else if (screenRect.size.width == 414)
    {
        float X_Co_tbl = (self.view.frame.size.width - 281)/2;
        [autocompleteTableView setFrame:CGRectMake(X_Co_tbl, 145, 281, 120)];
    }
    else if(screenRect.size.width == 375)
    {
        float X_Co_tbl = (self.view.frame.size.width - 281)/2;
        [autocompleteTableView setFrame:CGRectMake(X_Co_tbl, 125, 281, 120)];
    }
    else
    {
        float X_Co_tbl = (self.view.frame.size.width - 271)/2;
        [autocompleteTableView setFrame:CGRectMake(X_Co_tbl, 95, 271, 120)];
    }
    autocompleteTableView.delegate = self;
    autocompleteTableView.dataSource = self;
    autocompleteTableView.scrollEnabled = YES;
    autocompleteTableView.hidden = YES;
    [self.view addSubview:autocompleteTableView];
}

#pragma mark - UITextFieldDelegate
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    autocompleteTableView.hidden = YES;

    return YES;
}


- (BOOL)textField:(UITextField *)textField
shouldChangeCharactersInRange:(NSRange)range
replacementString:(NSString *)string {
    autocompleteTableView.hidden = NO;
    if (textField.tag == 1) {
    /// Initialize your array for searchTextFeild1;
    initialList = [[NSMutableArray alloc]initWithObjects:@"Face wash",@"Morning face wash",@"Cleanser", nil];
}
if (textField.tag == 2) {
    /// Initialize your array for searchTextFeild2;
    initialList = [[NSMutableArray alloc]initWithObjects:@"Face wash",@"Morning face wash",@"Cleanser", nil];
}
    NSString *substring = [NSString stringWithString:textField.text];
    substring = [substring
                 stringByReplacingCharactersInRange:range withString:string];
    [self searchAutocompleteEntriesWithSubstring:substring];
    return YES;
}

/// You make Text Field work as Search Bar here
- (void)searchAutocompleteEntriesWithSubstring:(NSString *)substring {

    // Put anything that starts with this substring into the autocompleteUrls array
    // The items in this array is what will show up in the table view
    [autoCompleteList removeAllObjects];
    for(NSString *curString in initialList) {
        //NSRange substringRange = [curString rangeOfString:substring];

        if ([curString rangeOfString:substring options:NSCaseInsensitiveSearch].location != NSNotFound) {
            [autoCompleteList addObject:curString];
        }
    }
    [autocompleteTableView reloadData];
}

#pragma mark UITableViewDataSource methods

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger) section {
    return autoCompleteList.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell *cell = nil;
    static NSString *AutoCompleteRowIdentifier = @"AutoCompleteRowIdentifier";
    cell = [tableView dequeueReusableCellWithIdentifier:AutoCompleteRowIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc]
                 initWithStyle:UITableViewCellStyleDefault reuseIdentifier:AutoCompleteRowIdentifier];
    }

    cell.textLabel.text = [autoCompleteList objectAtIndex:indexPath.row];
    return cell;
}

#pragma mark UITableViewDelegate methods

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
    searchtextField.text = selectedCell.textLabel.text;

    autocompleteTableView.hidden = YES;

    [self goPressed];

}

关于ios - 如何将文本字段输入 View 作为搜索栏？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33163008/