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How to search tableview using data from API?

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0

I have built a Tableview that shows data called from an API (I mention this because maybe my problem is due to reloadData()).

However, the format of my data is simple (a struct) and I found an answer that addresses my question here.

But this didn't work for me. I'm not sure why. My code gets built and there are no errors, but when I search for something, nothing happens.

Here's what my code looks like:

import UIKit

class UsersViewController: UIViewController, UITableViewDelegate, UITableViewDataSource 

 @IBOutlet weak var searchBar: UISearchBar!
 @IBOutlet weak var dataTableView: UITableView!

 var userData: [User] = [
 User(name: "name1", email: "email1", age: 25),
 User(name: "name2", email: "email2", age: 25),
 User(name: "name3", email: "email3", age: 25)
 ]

 var searchedUser = [User]()
 var searchActive = false

 override func viewDidLoad() 
 super.viewDidLoad()

 


 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 

 let cell = dataTableView.dequeueReusableCell(withIdentifier: "userCell", for: indexPath) as! UsersTableViewCell

 if searchActive 
 cell.userName.text = self.searchedUser[indexPath.row].name // Maybe my error is that I'm just searching for their usernames, but that's what I want
 else 
 cell.userName.text = self.userData[indexPath.row].name
 

 return cell
 

 func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 
 if searchActive 
 return self.searchedUser.count
 else 
 return self.userData.count
 

 



extension UsersViewController: UISearchBarDelegate 
 func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) 
 searchedUser = userData.filter(user) -> Bool in
 return user.name.range(of: searchText, options: [ .caseInsensitive ]) != nil
 

 searchActive = true

 self.dataTableView.reloadData()
 

What have I done wrong?

ios swift xcode uitableview uisearchbar

share|improve this question

asked Mar 24 at 7:14

Richard ReisRichard Reis

547

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Did you connect delegates? dataTableView.delegate = self; dataTableView.dataSource = self; searchBar.delegate = self;
  
  – Vasya2014
  Mar 24 at 7:33
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Does the return function get called ? And do you set delegate and data source for TableView?
  
  – Len_X
  Mar 24 at 7:33
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks! The delegate and data source are what were missing. But now, after I search I get an empty table. How do I go back to my full table after emptying the search bar?
  
  – Richard Reis
  Mar 24 at 7:42
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Set searchActive to false
  
  – Len_X
  Mar 24 at 8:08
  

  
  
  
  

add a comment | 

0

I have built a Tableview that shows data called from an API (I mention this because maybe my problem is due to reloadData()).

However, the format of my data is simple (a struct) and I found an answer that addresses my question here.

But this didn't work for me. I'm not sure why. My code gets built and there are no errors, but when I search for something, nothing happens.

Here's what my code looks like:

import UIKit

class UsersViewController: UIViewController, UITableViewDelegate, UITableViewDataSource 

 @IBOutlet weak var searchBar: UISearchBar!
 @IBOutlet weak var dataTableView: UITableView!

 var userData: [User] = [
 User(name: "name1", email: "email1", age: 25),
 User(name: "name2", email: "email2", age: 25),
 User(name: "name3", email: "email3", age: 25)
 ]

 var searchedUser = [User]()
 var searchActive = false

 override func viewDidLoad() 
 super.viewDidLoad()

 


 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 

 let cell = dataTableView.dequeueReusableCell(withIdentifier: "userCell", for: indexPath) as! UsersTableViewCell

 if searchActive 
 cell.userName.text = self.searchedUser[indexPath.row].name // Maybe my error is that I'm just searching for their usernames, but that's what I want
 else 
 cell.userName.text = self.userData[indexPath.row].name
 

 return cell
 

 func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 
 if searchActive 
 return self.searchedUser.count
 else 
 return self.userData.count
 

 



extension UsersViewController: UISearchBarDelegate 
 func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) 
 searchedUser = userData.filter(user) -> Bool in
 return user.name.range(of: searchText, options: [ .caseInsensitive ]) != nil
 

 searchActive = true

 self.dataTableView.reloadData()
 

What have I done wrong?

ios swift xcode uitableview uisearchbar

share|improve this question

asked Mar 24 at 7:14

Richard ReisRichard Reis

547

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Did you connect delegates? dataTableView.delegate = self; dataTableView.dataSource = self; searchBar.delegate = self;
  
  – Vasya2014
  Mar 24 at 7:33
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Does the return function get called ? And do you set delegate and data source for TableView?
  
  – Len_X
  Mar 24 at 7:33
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks! The delegate and data source are what were missing. But now, after I search I get an empty table. How do I go back to my full table after emptying the search bar?
  
  – Richard Reis
  Mar 24 at 7:42
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Set searchActive to false
  
  – Len_X
  Mar 24 at 8:08
  

  
  
  
  

add a comment | 

I have built a Tableview that shows data called from an API (I mention this because maybe my problem is due to reloadData()).

However, the format of my data is simple (a struct) and I found an answer that addresses my question here.

But this didn't work for me. I'm not sure why. My code gets built and there are no errors, but when I search for something, nothing happens.

Here's what my code looks like:

import UIKit

class UsersViewController: UIViewController, UITableViewDelegate, UITableViewDataSource 

 @IBOutlet weak var searchBar: UISearchBar!
 @IBOutlet weak var dataTableView: UITableView!

 var userData: [User] = [
 User(name: "name1", email: "email1", age: 25),
 User(name: "name2", email: "email2", age: 25),
 User(name: "name3", email: "email3", age: 25)
 ]

 var searchedUser = [User]()
 var searchActive = false

 override func viewDidLoad() 
 super.viewDidLoad()

 


 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 

 let cell = dataTableView.dequeueReusableCell(withIdentifier: "userCell", for: indexPath) as! UsersTableViewCell

 if searchActive 
 cell.userName.text = self.searchedUser[indexPath.row].name // Maybe my error is that I'm just searching for their usernames, but that's what I want
 else 
 cell.userName.text = self.userData[indexPath.row].name
 

 return cell
 

 func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 
 if searchActive 
 return self.searchedUser.count
 else 
 return self.userData.count
 

 



extension UsersViewController: UISearchBarDelegate 
 func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) 
 searchedUser = userData.filter(user) -> Bool in
 return user.name.range(of: searchText, options: [ .caseInsensitive ]) != nil
 

 searchActive = true

 self.dataTableView.reloadData()
 

What have I done wrong?

ios swift xcode uitableview uisearchbar

share|improve this question

asked Mar 24 at 7:14

Richard ReisRichard Reis

547

import UIKit

class UsersViewController: UIViewController, UITableViewDelegate, UITableViewDataSource 

 @IBOutlet weak var searchBar: UISearchBar!
 @IBOutlet weak var dataTableView: UITableView!

 var userData: [User] = [
 User(name: "name1", email: "email1", age: 25),
 User(name: "name2", email: "email2", age: 25),
 User(name: "name3", email: "email3", age: 25)
 ]

 var searchedUser = [User]()
 var searchActive = false

 override func viewDidLoad() 
 super.viewDidLoad()

 


 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 

 let cell = dataTableView.dequeueReusableCell(withIdentifier: "userCell", for: indexPath) as! UsersTableViewCell

 if searchActive 
 cell.userName.text = self.searchedUser[indexPath.row].name // Maybe my error is that I'm just searching for their usernames, but that's what I want
 else 
 cell.userName.text = self.userData[indexPath.row].name
 

 return cell
 

 func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 
 if searchActive 
 return self.searchedUser.count
 else 
 return self.userData.count
 

 



extension UsersViewController: UISearchBarDelegate 
 func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) 
 searchedUser = userData.filter(user) -> Bool in
 return user.name.range(of: searchText, options: [ .caseInsensitive ]) != nil
 

 searchActive = true

 self.dataTableView.reloadData()
 

share|improve this question

asked Mar 24 at 7:14

Richard ReisRichard Reis

547

share|improve this question

asked Mar 24 at 7:14

Richard ReisRichard Reis

547

asked Mar 24 at 7:14

Richard ReisRichard Reis

547

asked Mar 24 at 7:14

Richard ReisRichard Reis

547

1 Answer
1

active

oldest

votes

1

Set your Delegates and DataSource:

override func viewDidLoad() 
 super.viewDidLoad()
 dataTableView.delegate = self 
 dataTableView.dataSource = self 
 searchBar.delegate = self

share|improve this answer

answered Mar 24 at 8:11

Len_XLen_X

317320

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This works! Thanks. But now after searching, my table is empty. And I tried setting searchActive to false in a pull to refresh method but that didn't work. Where should I do it?
  
  – Richard Reis
  Mar 24 at 8:13
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Inside searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) you can check if searchText == "" searchActive = false self.dataTableView.reloadData()
  
  – Len_X
  Mar 24 at 8:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Oh wait. My search results are showing up twice (almost like it's looping through searchedUser twice). Do you know how that might have happened?
  
  – Richard Reis
  Mar 24 at 8:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Maybe clear the searchedUser before searchedUser = userData.filter Let me know if that works
  
  – Len_X
  Mar 24 at 11:45
  

  
  
  
  

add a comment | 

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1

Set your Delegates and DataSource:

override func viewDidLoad() 
 super.viewDidLoad()
 dataTableView.delegate = self 
 dataTableView.dataSource = self 
 searchBar.delegate = self

share|improve this answer

answered Mar 24 at 8:11

Len_XLen_X

317320

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This works! Thanks. But now after searching, my table is empty. And I tried setting searchActive to false in a pull to refresh method but that didn't work. Where should I do it?
  
  – Richard Reis
  Mar 24 at 8:13
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Inside searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) you can check if searchText == "" searchActive = false self.dataTableView.reloadData()
  
  – Len_X
  Mar 24 at 8:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Oh wait. My search results are showing up twice (almost like it's looping through searchedUser twice). Do you know how that might have happened?
  
  – Richard Reis
  Mar 24 at 8:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Maybe clear the searchedUser before searchedUser = userData.filter Let me know if that works
  
  – Len_X
  Mar 24 at 11:45
  

  
  
  
  

add a comment | 

1

Set your Delegates and DataSource:

override func viewDidLoad() 
 super.viewDidLoad()
 dataTableView.delegate = self 
 dataTableView.dataSource = self 
 searchBar.delegate = self

share|improve this answer

answered Mar 24 at 8:11

Len_XLen_X

317320

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This works! Thanks. But now after searching, my table is empty. And I tried setting searchActive to false in a pull to refresh method but that didn't work. Where should I do it?
  
  – Richard Reis
  Mar 24 at 8:13
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Inside searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) you can check if searchText == "" searchActive = false self.dataTableView.reloadData()
  
  – Len_X
  Mar 24 at 8:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Oh wait. My search results are showing up twice (almost like it's looping through searchedUser twice). Do you know how that might have happened?
  
  – Richard Reis
  Mar 24 at 8:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Maybe clear the searchedUser before searchedUser = userData.filter Let me know if that works
  
  – Len_X
  Mar 24 at 11:45
  

  
  
  
  

add a comment | 

Set your Delegates and DataSource:

override func viewDidLoad() 
 super.viewDidLoad()
 dataTableView.delegate = self 
 dataTableView.dataSource = self 
 searchBar.delegate = self

share|improve this answer

answered Mar 24 at 8:11

Len_XLen_X

317320

override func viewDidLoad() 
 super.viewDidLoad()
 dataTableView.delegate = self 
 dataTableView.dataSource = self 
 searchBar.delegate = self

share|improve this answer

answered Mar 24 at 8:11

Len_XLen_X

317320

answered Mar 24 at 8:11

Len_XLen_X

317320

answered Mar 24 at 8:11

Len_XLen_X

317320