[IPhone advanced] XMPP-based IOS chat client (IOS client 1), iPhone exmpp

[IPhone advanced] XMPP-based IOS chat client (IOS client 1), iPhone exmpp

After introducing the server, we will focus on writing our own IOS client program.

Let's take a look at what we have done

First download the xmppframework framework.

Click ZIP to download

Next, use Xcode to create a project

Drag the following files into the new project

Add framework

And set

Now we have all set up. Run it and see if there is any error.

If there is no error, our xmppframework will be successfully added.

 

We set our page as follows:

Our KKViewController. h

 

[Java]View plain copy

1. # Import <UIKit/UIKit. h>
2. @ Interface KKViewController: UIViewController <UITableViewDelegate, UITableViewDataSource>
3. @ Property (strong, nonatomic) IBOutlet UITableView * tView;
4. -(IBAction) Account :( id) sender;
5. @ End

KKViewController. m

 

[Java]View plain copy

1. # Import "KKViewController. h"
2. @ Interface KKViewController (){
3. // Online user
4. NSMutableArray * onlineUsers;
5. }
6. @ End
7. @ Implementation KKViewController
8. @ Synthesize tView;
9. -(Void) viewDidLoad
10. {
11. [Super viewDidLoad];
12. Self. tView. delegate = self;
13. Self. tView. dataSource = self;
14. OnlineUsers = [NSMutableArray array];
15. // Do any additional setup after loading the view, typically from a nib.
16. }
17. -(Void) viewDidUnload
18. {
19. [Self setTView: nil];
20. [Super viewDidUnload];
21. // Release any retained subviews of the main view.
22. }
23. -(BOOL) shouldAutorotateToInterfaceOrientation :( UIInterfaceOrientation) interfaceOrientation
24. {
25. Return (interfaceOrientation! = UIInterfaceOrientationPortraitUpsideDown );
26. }
27. -(IBAction) Account :( id) sender {
28. }
29. # Pragma mark UITableViewDataSource
30. -(NSInteger) tableView :( UITableView *) tableView numberOfRowsInSection :( NSInteger) section {
31. Return [onlineUsers count];
32. }
33. -(UITableViewCell *) tableView :( UITableView *) tableView cellForRowAtIndexPath :( NSIndexPath *) indexPath {
34. Static NSString * identifier = @ "userCell ";
35. UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier: identifier];
36. If (cell = nil ){
37. Cell = [[UITableViewCell alloc] initWithStyle: UITableViewCellStyleDefault reuseIdentifier: identifier];
38. }
39. Return cell;
40. }
41. -(NSInteger) numberOfSectionsInTableView :( UITableView *) tableView {
42. Return 1;
43. }
44. # Pragma mark UITableViewDelegate
45. -(Void) tableView :( UITableView *) tableView didSelectRowAtIndexPath :( NSIndexPath *) indexPath {
46. }
47. @ End

The code here should be familiar with UITableView. If you do not know it, check the simple application of UITableView to learn it.

Next is the login page

KKLoginController. m

 

[Java]View plain copy

1. -(IBAction) LoginButton :( id) sender {
3. If ([self validateWithUser: userTextField. text andPass: passTextField. text andServer: serverTextField. text]) {
5. NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
6. [Defaults setObject: self. userTextField. text forKey: USERID];
7. [Defaults setObject: self. passTextField. text forKey: PASS];
8. [Defaults setObject: self. serverTextField. text forKey: SERVER];
9. // Save
10. [Defaults synchronize];
12. [Self dismissModalViewControllerAnimated: YES];
13. } Else {
14. UIAlertView * alert = [[UIAlertView alloc] initWithTitle: @ "prompt" message: @ "Enter the user name, password and server" delegate: nil cancelButtonTitle: @ "OK" otherButtonTitles: nil, nil];
15. [Alert show];
16. }
18. }
20. -(IBAction) closeButton :( id) sender {
22. [Self dismissModalViewControllerAnimated: YES];
23. }
25. -(BOOL) validateWithUser :( NSString *) userText andPass :( NSString *) passText andServer :( NSString *) serverText {
27. If (userText. length> 0 & passText. length> 0 & serverText. length> 0 ){
28. Return YES;
29. }
31. Return NO;
32. }

Below is the chat page

Here we focus on UITableView.

KKChatController. m

 

[Java]View plain copy

1. -(NSInteger) numberOfSectionsInTableView :( UITableView *) tableView {
3. Return 1;
4. }
6. -(NSInteger) tableView :( UITableView *) tableView numberOfRowsInSection :( NSInteger) section {
7. Return [messages count];
8. }
10. -(UITableViewCell *) tableView :( UITableView *) tableView cellForRowAtIndexPath :( NSIndexPath *) indexPath {
12. Static NSString * identifier = @ "msgCell ";
14. UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier: identifier];
16. If (cell = nil ){
17. Cell = [[UITableViewCell alloc] initWithStyle: UITableViewCellStyleSubtitle reuseIdentifier: identifier];
18. }
20. NSMutableDictionary * dict = [messages objectAtIndex: indexPath. row];
22. Cell. textLabel. text = [dict objectForKey: @ "msg"];
23. Cell. detailTextLabel. text = [dict objectForKey: @ "sender"];
24. Cell. accessoryType = UITableViewCellAccessoryNone;
26. Return cell;
28. }

These are simple and I believe everyone can understand them.

After setting all these settings, we will focus on XMPP. It may be too long. Let's take the next chapter.