Swift 使用firebase连接到Tableview的搜索栏
我有一个连接到Tableview的搜索栏,我不知道如何让它工作! 表视图是“记忆”的表视图。记忆有标题,用户id,身体,我希望它也能够搜索的标题。 问题是,我正在与firebase合作,我真的不知道如何在特定用户的特定记忆中搜索,以及如何从firebase中获取所有信息 我试了这么多代码行,但都没用。我需要帮助Swift 使用firebase连接到Tableview的搜索栏,swift,firebase,search,firebase-realtime-database,uisearchbar,Swift,Firebase,Search,Firebase Realtime Database,Uisearchbar,我有一个连接到Tableview的搜索栏,我不知道如何让它工作! 表视图是“记忆”的表视图。记忆有标题,用户id,身体,我希望它也能够搜索的标题。 问题是,我正在与firebase合作,我真的不知道如何在特定用户的特定记忆中搜索,以及如何从firebase中获取所有信息 我试了这么多代码行,但都没用。我需要帮助 import UIKit import Firebase import FirebaseAuth import FirebaseDatabase class MemoryViewCon
import UIKit
import Firebase
import FirebaseAuth
import FirebaseDatabase
class MemoryViewController: UIViewController,UITableViewDelegate,UITableViewDataSource, UISearchBarDelegate, UISearchResultsUpdating {
func updateSearchResults(for searchController: UISearchController) {
self.memories = Array.filter({ (array: String) -> Bool in
if array.contains(searchController.searchBar.text!)
{
return true
}
else
{
return false
}
})
self.resultController.tableView.reloadData()
}
var filteredArray = [Memory]()
var searchController = UISearchController()
var resultController = UITableViewController()
@IBOutlet weak var tbl: UITableView!
@IBOutlet weak var searchBar: UISearchBar!
var memories : [Memory] = []
var ref : DatabaseReference!
let sref = Storage.storage().reference()
var lastIndex : Int = 0
var strMode : String = ""
var filteredData = [String]()
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return memories.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let identifier = "iden"
var cell : UITableViewCell? = tableView.dequeueReusableCell(withIdentifier: identifier, for: indexPath)
if cell == nil
{
cell = UITableViewCell(style: UITableViewCell.CellStyle.default, reuseIdentifier: identifier)
}
let temp = memories[indexPath.row]
cell?.textLabel?.text = temp.title
cell?.imageView?.image = temp.image
return cell!
}
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete
{
let temp = self.memories[indexPath.row]
self.memories.remove(at: indexPath.row)
self.ref.child("MEmories/\(temp.key)").removeValue()
tableView.deleteRows(at: [indexPath as IndexPath], with: .fade)
}
}
override func viewDidLoad() {
super.viewDidLoad()
ref = Database.database().reference()
let rightButton = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(MemoryViewController.barButtonItemClicked(_:)))
self.navigationItem.setRightBarButton(rightButton, animated: true)
// Do any additional setup after loading the view.
self.loadMemories()
self.searchController = UISearchController(searchResultsController: resultController)
tbl.tableHeaderView = self.searchController.searchBar
self.searchController.searchResultsUpdater = self
self.resultController.tableView.delegate = self
self.resultController.tableView.dataSource = self
}
@objc func barButtonItemClicked(_ sender:UIBarButtonItem)
{
print("+ clicked")
let addMemoryViewController = self.storyboard?.instantiateViewController(withIdentifier: "AddMemoryViewController") as! AddMemoryViewController
self.strMode = "newMemory"
self.navigationController?.pushViewController(addMemoryViewController, animated: true)
}
func readFromNSUSerDefault()-> Memory
{
let d : UserDefaults = UserDefaults.standard
let strTitle = d.object(forKey: "title") as? String
let strBody = d.object(forKey: "body") as? String
let strImageRef = d.object(forKey: "imageRef") as? String
let uid = d.object(forKey: "uid") as? String
let imageData = d.object(forKey: "imageData") as? Data
let key = d.object(forKey: "key") as? String
let m = Memory(title: strTitle!, body: strBody!, key: key!, uid: uid!, imageRef: strImageRef!)
m.image = UIImage(data: imageData!)
m.key = key!
return m
}
override func viewDidAppear(_ animated: Bool) {
let d = UserDefaults.standard
let newMemory = readFromNSUSerDefault()
let userAdded = d.bool(forKey: "userAdded") //key new user = true
let userEdited = d.bool(forKey: "userEdited")//key user edited = true
if self.strMode == "newMemory" && userAdded
{
self.memories.append(newMemory)
self.tbl.reloadData()
}
else if self.strMode == "edit" && userEdited
{
memories[lastIndex] = newMemory
self.tbl.reloadData()
}
d.set(false, forKey: "userAdded")
d.set(false, forKey: "userEdited")
d.synchronize()
self.strMode = " "
}
func loadMemories()
{
self.ref.child("MEmories").queryOrderedByKey().observe(.value, with: {
snapShot in
if let dict = snapShot.value as? NSDictionary
{
for d in (dict as? Dictionary<String,AnyObject>)!
{
let title = d.value["title"] as?String
let body = d.value["body"] as? String
let uid = d.value["uid"] as? String
let imageRef = d.value["imageRef"] as? String
let m = Memory(title: title!, body: body!, uid: uid!,imageRef:imageRef!)
m.key = d.key
let tempImageRef = self.sref.child(m.imageRef)
tempImageRef.getData(maxSize: 1*1024*1024, completion: {(data,error) in
if error == nil
{
if let imageData = data
{
m.image = UIImage(data: imageData)
self.memories.append(m)
self.tbl.reloadData()
}
}
})
}
}//end of if
self.ref.child("MEmories").removeAllObservers()
})
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let identifier = segue.identifier
{
if identifier == "goToEdit"
{
let indexPath = self.tbl.indexPathForSelectedRow
let addMemoryViewController = segue.destination as! AddMemoryViewController
self.strMode = "edit"
self.lastIndex = (indexPath?.row)!
addMemoryViewController.mode = self.strMode
addMemoryViewController.current = memories[(indexPath?.row)!]
}
}
}
}
导入UIKit
进口火基
导入FirebaseAuth
导入FirebaseDatabase
类MemoryViewController:UIViewController、UITableViewDelegate、UITableViewDataSource、UISearchBarDelegate、UISearchResultsUpdated{
func updateSearchResults(对于searchController:UISearchController){
self.memories=Array.filter({(Array:String)->Bool-in
if array.contains(searchController.searchBar.text!)
{
返回真值
}
其他的
{
返回错误
}
})
self.resultController.tableView.reloadData()
}
var filteredArray=[内存]()
var searchController=UISearchController()
var resultController=UITableViewController()
@IBL弱变量tbl:UITableView!
@ibvar搜索栏:UISearchBar!
变量内存:[内存]=[]
var-ref:DatabaseReference!
设sref=Storage.Storage().reference()
var lastIndex:Int=0
var strMode:String=“”
变量filteredData=[String]()
func tableView(tableView:UITableView,numberofrowsinssection:Int)->Int{
返回内存。计数
}
func tableView(tableView:UITableView,cellForRowAt indexath:indexPath)->UITableViewCell{
让标识符=“iden”
变量单元格:UITableViewCell?=tableView.dequeueReusableCell(带标识符:标识符,for:indexPath)
如果单元格==nil
{
单元格=UITableViewCell(样式:UITableViewCell.CellStyle.default,reuseIdentifier:identifier)
}
let temp=内存[indexPath.row]
单元格?.textLabel?.text=临时标题
单元格?.imageView?.image=temp.image
返回单元!
}
func tableView(tableView:UITableView,canEditRowAt indexath:indexPath)->Bool{
返回真值
}
func tableView(tableView:UITableView,commit editingStyle:UITableViewCell.editingStyle,forRowAt indexath:indexPath){
如果editingStyle==.delete
{
让temp=self.memories[indexPath.row]
self.memories.remove(位于:indexPath.row)
self.ref.child(“MEmories/\(temp.key)”).removeValue()
tableView.deleteRows(位于:[indexPath as indexPath],带:.fade)
}
}
重写func viewDidLoad(){
super.viewDidLoad()
ref=Database.Database().reference()
let rightButton=UIBarButtonItem(barButtonSystemItem:.add,target:self,action:#选择器(MemoryViewController.barButtonItemClicked(:))
self.navigationItem.setRightBarButton(rightButton,动画:true)
//加载视图后执行任何其他设置。
self.loadMemories()
self.searchController=UISearchController(searchresultcontroller:resultController)
tbl.tableHeaderView=self.searchController.searchBar
self.searchController.searchResultsUpdater=self
self.resultController.tableView.delegate=self
self.resultController.tableView.dataSource=self
}
@objc func BARBUTTONIMCLICKED(uu发送方:UIBARBUTTONIM)
{
打印(“+单击”)
让addMemoryViewController=self.storyboard?.InstanceEviewController(标识符为:“addMemoryViewController”)作为!addMemoryViewController
self.strMode=“newMemory”
self.navigationController?.pushViewController(addMemoryViewController,动画:true)
}
func readFromNSUSerDefault()->内存
{
设d:UserDefaults=UserDefaults.standard
让strTitle=d.object(forKey:“title”)作为?字符串
让strBody=d.object(forKey:“body”)作为?字符串
将strImageRef=d.object(forKey:“imageRef”)设为?字符串
让uid=d.object(forKey:“uid”)作为?字符串
将imageData=d.object(forKey:“imageData”)设为?数据
让key=d.object(forKey:“key”)作为字符串
设m=Memory(标题:strTitle!、正文:strobdy!、键:key!、uid:uid!、imageRef:strImageRef!)
m、 image=UIImage(数据:imageData!)
m、 钥匙!
返回m
}
覆盖函数视图显示(u动画:Bool){
设d=UserDefaults.standard
让newMemory=readFromNSUSerDefault()
让userAdded=d.bool(forKey:“userAdded”)//key new user=true
让userEdited=d.bool(forKey:“userEdited”)//key user edited=true
如果self.strMode==“newMemory”&&userAdded
{
self.memories.append(newMemory)
self.tbl.reloadData()
}
否则,如果self.strMode==“编辑”&&userEdited
{
记忆[lastIndex]=新记忆
self.tbl.reloadData()
}
d、 set(false,forKey:“userAdded”)
d、 set(false,forKey:“userEdited”)
d、 同步()
self.strMode=“”
}
func loadMemories()
{
self.ref.child(“记忆”).queryOrderedByKey().observe(.value),带有:{
快照
如果让dict=snapShot.value作为NSDictionary
{
对于d(dict as?Dictionary)!
{
将title=d.value[“title”]设为?字符串
让body=d.value[“body”]作为字符串
让uid=d.value[“uid”]作为字符串
将imageRef=d.value[“imageRef”]设为?字符串
设m=Memory(title:title!、body:body!、uid:uid!、imageRef:imageRef!)
m、 key=d.key
设tempImageRef=self.sref.child(m.imageRef)
if let dict = snapShot.value as? NSDictionary
{
for d in (dict as? Dictionary<String,AnyObject>)!
{
//append in memories
}
self.filteredArray = self.memories
self.tbl.reloadData()
}//end of if
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return filteredArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let identifier = "iden"
var cell : UITableViewCell? = tableView.dequeueReusableCell(withIdentifier: identifier, for: indexPath)
if cell == nil
{
cell = UITableViewCell(style: UITableViewCell.CellStyle.default, reuseIdentifier: identifier)
}
let temp = filteredArray[indexPath.row]
cell?.textLabel?.text = temp.title
cell?.imageView?.image = temp.image
return cell!
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete
{
let temp = self.filteredArray[indexPath.row]
self.filteredArray.remove(at: indexPath.row)
if let index = self.memories.firstIndex(where: { $0.title == temp.title }) {
self.memories.remove(at: index)
}
self.ref.child("MEmories/\(temp.key)").removeValue()
tableView.deleteRows(at: [indexPath as IndexPath], with: .fade)
}
}
func updateSearchResults(for searchController: UISearchController) {
if searchController.searchBar.text!.isEmpty {
self.filteredArray = self.memories
} else {
self.filteredArray = self.memories.filter({
$0.title.localizedCaseInsensitiveContains(searchController.searchBar.text!)
})
}
self.resultController.tableView.reloadData()
}
class MemoryClass {
var title = ""
init(withTitle: String) {
self.title = withTitle
}
}
let m0 = MemoryClass(withTitle: "Gone Fishing")
let m1 = MemoryClass(withTitle: "Wedding")
let m2 = MemoryClass(withTitle: "France Vacation")
let m3 = MemoryClass(withTitle: "Italy Vacation")
let memoriesArray = [m0, m1, m2, m3]
let memoryTitleToFind = "Wedding"
let filteredArray = memoriesArray.filter { $0.title == memoryTitleToFind }
for foundMemory in filteredArray {
print(foundMemory.title)
}
Wedding