import UIKit
class MasterTableViewController: UITableViewController, PFLogInViewControllerDelegate, PFSignUpViewControllerDelegate, UISearchBarDelegate, UISearchDisplayDelegate {
@IBOutlet var searchBar: UISearchBar!
// creating array for holding ojects
var noteObjects: NSMutableArray! = NSMutableArray()
var v = 0
var searchActive : Bool = false
var data:[PFObject]!
var filtered:[PFObject]!
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
}
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
if v == 0 {
self.fetchAllObjectsFromLocalDataStore()
//self.fetchAllObjects()
}
}
// fetching data from local datastrore and from parse
func fetchAllObjectsFromLocalDataStore(){
let query: PFQuery = PFQuery(className: "className")
query.orderByDescending("createdAt")
query.fromLocalDatastore()
query.findObjectsInBackgroundWithBlock { (var objects, error) -> Void in
self.search()
if (error == nil) {
let temp: NSArray = objects as! NSArray
self.noteObjects = temp.mutableCopy() as! NSMutableArray
self.search()
self.tableView.reloadData()
}else {
print(error!.userInfo)
}
}
}
func fetchAllObjects(){
let query: PFQuery = PFQuery(className: "className")
query.orderByDescending("createdAt")
search()
query.findObjectsInBackgroundWithBlock { (objects, error) -> Void in
if (error == nil) {
PFObject.pinAllInBackground(objects, block: nil )
self.fetchAllObjectsFromLocalDataStore()
// self.tableView.reloadData()
} else {
print(error?.userInfo)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return self.noteObjects.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! MasterTableViewCell
let object : PFObject = self.noteObjects.objectAtIndex(indexPath.row) as! PFObject
cell.MasterTitleLabel?.text = object["Title"] as? String
cell.MasterTextLabel.text = object["Fstory"] as? String
cell.MasterTimeLabel.text = object["Time"] as? String
cell.MasterLocationLabel.text = object["Location"] as? String
return cell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier("openStory", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let upcoming: AddNoteTableViewController = segue.destinationViewController as! AddNoteTableViewController
if (segue.identifier == "openStory"){
let indexPath = self.tableView.indexPathForSelectedRow!
let object: PFObject = self.noteObjects.objectAtIndex(indexPath.row) as! PFObject
upcoming.object = object
self.tableView.deselectRowAtIndexPath(indexPath, animated: true)
}
}
@IBAction func btnReload(sender: AnyObject) {
fetchAllObjects()
}
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if (editingStyle == UITableViewCellEditingStyle.Delete ){
let object : PFObject = self.noteObjects.objectAtIndex(indexPath.row) as! PFObject
// the below for deleting the selected cell's object from server's database
// object.deleteInBackground()
//the below for deleting the selected cell's object from localstorage
object.unpinInBackground()
self.noteObjects.removeObjectAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
func search(searchText: String? = nil){
let query = PFQuery(className: "className")
if(searchText != nil){
query.whereKey("Title", containsString: searchText)
}
query.findObjectsInBackgroundWithBlock { (results, error) -> Void in
self.data = results! as [PFObject]
self.tableView.reloadData()
}
}
func searchBarTextDidBeginEditing(searchBar: UISearchBar) {
searchActive = true;
}
func searchBarTextDidEndEditing(searchBar: UISearchBar) {
searchActive = false;
}
func searchBarCancelButtonClicked(searchBar: UISearchBar) {
searchActive = false;
}
func searchBarSearchButtonClicked(searchBar: UISearchBar) {
searchActive = false;
}
上面的代码用于检索解析的对象并实现搜索栏，以便我可以通过搜索功能搜索我的对象，但我不知道缺少什么或如何正确处理它，如果有人知道请帮助我
最佳答案
你可以使用 UIsearchBar 尝试这样的事情
class TableViewController: UITableViewController, UISearchBarDelegate {
@IBOutlet var searchBar: UISearchBar!
var userList:NSMutableArray = NSMutableArray()
var noteObjects: NSMutableArray = NSMutableArray()
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
self.fetchAllObjectsFromLocalDataStore()
}
func loadUsers(name:String){
var findUsers:PFQuery = PFUser.query()!
if !name.isEmpty{
findUsers.whereKey("username", containsString: name)
findUsers.whereKey("username", containsString: name .lowercaseString)
let user = PFUser.currentUser()
if let user = PFUser.currentUser() {
findUsers.whereKey("institute", equalTo: user["institute"])
}
}
findUsers.fromLocalDatastore()
findUsers.findObjectsInBackgroundWithBlock { ( objects, error) -> Void in
if (error == nil) {
self.userList = NSMutableArray(array: objects!)
self.tableView.reloadData()
}else {
print(error!.userInfo)
}
}}
func searchBar(searchBar: UISearchBar, textDidChange searchText: String) {
loadUsers(searchText)
self.searchBar.setShowsCancelButton(true, animated: true)
}
func searchBarCancelButtonClicked(searchBar: UISearchBar) {
loadUsers("")
self.searchBar.setShowsCancelButton(false, animated: true)
self.searchBar.endEditing(true)
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
if searchBar.text == "" {
return noteObjects.count
} else {
return userList.count }
//self.noteObjects.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! UsersTableViewCell
if searchBar.text == "" {
let object : PFObject = self.noteObjects.objectAtIndex(indexPath.row) as! PFObject
let photo: PFFile = object["photo"] as! PFFile
photo.getDataInBackgroundWithBlock{
(imageData:NSData?, error:NSError?)-> Void in
if (error == nil){
let image:UIImage = UIImage(data: imageData!)!
cell.imgViewUser.image = image
}
else if error != nil{
print("error")
}
}
cell.lblUserInterest.text = object["interest"] as? String
//cell.imgViewUser.image = object["photo"] as? PFFile
cell.lblUsername.text = object["username"] as? String
return cell
} else {
let object : PFObject = self.userList.objectAtIndex(indexPath.row) as! PFObject
let photo: PFFile = object["photo"] as! PFFile
photo.getDataInBackgroundWithBlock{
(imageData:NSData?, error:NSError?)-> Void in
if (error == nil){
let image:UIImage = UIImage(data: imageData!)!
cell.imgViewUser.image = image
}
else if error != nil{
print("error")
}}
cell.lblUserInterest.text = object["interest"] as? String
//cell.imgViewUser.image = object["photo"] as? PFFile
cell.lblUsername.text = object["username"] as? String
return cell
}
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
var object :AnyObject?
}
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if (editingStyle == UITableViewCellEditingStyle.Delete ){
}
关于ios - 我正在尝试在我的应用程序中实现搜索栏，以便我可以搜索从 parse.com 检索到的对象，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34051242/