这是一个例子: 图像 1 - 它包含一个 UITextfield(例如 emailTextField)。当我开始输入时,根据后台的关键字,将调用一个 API,该 API 将根据您的关键字给出响应。
用于搜索的API类似于
url/collaborator/search
参数是,
1. token
2. term
图像 2 - 当我开始输入“ma”之类的内容时,然后在后台必须调用 api 调用, 即 API 调用就像
url/collaborator/search?token=kdkhu67tdndodAK803i939ndAJDEw & term=ma
所以它会给出响应,并且该响应必须像下拉列表一样显示,如图所示
图像 3 - 如果输入特定名称,则根据其数据,它必须过滤电子邮件并且特定电子邮件必须出现,当我单击它时,它必须添加到文本字段中。我想要单个搜索以及多个电子邮件搜索。
url/collaborator/search?token=kdkhu67tdndodAK803i939ndAJDEw & term=komal
目前我想一次实现一个,如果多个可以执行或添加则没有问题。
那么,当我开始在文本字段中输入内容并获取数组中的数据时,如何在运行时调用 api ???
最佳答案
编写下面的代码,
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSLog(@"Data is : %@",_ccTextField.text);
[self collaboratorApiMethod:_ccTextField.text];
return YES;
}
// This metod is used to add collaborator, it will call API according to enetered data, JSON will receive
-(void)collaboratorApiMethod:(NSString*)valueFromTextField
{
NSString *url =[NSString stringWithFormat:@"%@/collaborator/search?token=%@&term=%@",[userDefaults objectForKey:@"token"],valueFromTextField];
// so this will generate in url
// call api (REST API call)
// you will get JSON data, store in array/dictionaries
}
假设您有一个包含电子邮件列表的数组。现在,当用户开始在文本字段中输入时,您必须显示电子邮件的建议,并根据其值数据将过滤并显示建议。
编写下面的代码,
- (UITableViewCell *)autoSuggestionField:(UITextField *)field tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath forText:(NSString *)text {
userSearchDataCell *cell=[tableView dequeueReusableCellWithIdentifier:@"userSearchDataCellId"];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"userSearchDataCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
NSArray *emails = emailArray;
if (text.length > 0) {
NSPredicate *filterPredictate = [NSPredicate predicateWithFormat:@"SELF CONTAINS[cd] %@",text];
months = [emailArray filteredArrayUsingPredicate:filterPredictate];
}
cell.emailLabel.text = emails[indexPath.row];
}
- (NSInteger)autoSuggestionField:(UITextField *)field tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section forText:(NSString *)text {
if (text.length == 0) {
return emailArray.count;
}
NSPredicate *filterPredictate = [NSPredicate predicateWithFormat:@"SELF CONTAINS[cd] %@", text];
NSInteger count = [emailArray filteredArrayUsingPredicate:filterPredictate].count;
return count;
}
- (CGFloat)autoSuggestionField:(UITextField *)field tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath forText:(NSString *)text {
return 65;
}
- (void)autoSuggestionField:(UITextField *)field tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath forText:(NSString *)text {
// NSLog(@"Selected suggestion at index row - %ld", (long)indexPath.row);
NSArray *emails = emailArray;
if (text.length > 0) {
NSPredicate *filterPredictate = [NSPredicate predicateWithFormat:@"SELF CONTAINS[cd] %@", text];
months = [emailArray filteredArrayUsingPredicate:filterPredictate];
}
self.emailLabel.text = emails[indexPath.row];
}
关于iOS : How to call an API runtime when I start typing in UITextfield?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47484267/