6. New. User login model and login Interface Focus processing

Support gesture swipe back after using the self-brought push return 7.0.

1. Encapsulate a separate class to keep user logon information create a new class

Add Singleton.h header file definition properties in the. h file

　　

　　

And then to the. m file, define Single_implementation (Loginuser)

and import Nsstring+helper.h header files

and #define Kxmppusernamekey @ "Xmppusername"

#define Kxmpppasswordkey @ "Xmpppassword"

#define Kxmpphostnamekey @ "Xmpphostname"

Determine if isemptystring is empty string, only need to return (Self.length ==0);

-(NSString *) Loadstringfromdefaultswithkey: (NSString *) key

{

NSString *str = [[Nsuserdefaults standarduserdefaults] stringforkey:key];

return (str)? STR: @ "";

}

-(NSString *) userName

{return [self loadstringfromdefaultswithkey:kxmppusernamekey];}

-(void) Setusername: (NSString *) userName

{[UserName savetonsdefaultswithkey:kxmppusernamekey];}

-(NSString *) password

{return [self loadstringfromdefaultswithkey:kxmpppasswordkey];}

-(void) SetPassword: (NSString *) password

{[Password Savetonsdefaultswithkey:kxmpppasswordkey];}

-(NSString *) hostName

{return [self loadstringfromdefaultswithkey:kxmpphostnamekey];}

-(void) SetHostName: (NSString *) hostName

{[HostName savetonsdefaultswithkey:kxmpphostnamekey];}

This method of myjidname is defined in the. h file.

-(NSString *) myjidname

{return [NSString stringwithformat:@ "%@@%@", Self.username, Self.hostname];}

2. Import the newly created class in the login file.

Set the initial value of the interface text below the login and registration button

_usernametext.text = [[Loginuser sharedloginuser] userName];

_passwordtext.text = [[Loginuser sharedloginuser] password];

_hostnametext.text = [[Loginuser sharedloginuser] hostName];

Set Text Focus ... (The text box is empty automatically when the light box is anchored to the text box)

if ([_usernametext.text isemptystring]) {

[_usernametext Becomefirstresponder];

} else {

[_passwordtext Becomefirstresponder];

}

2. Write user logon information to System Preferences

[[Loginuser Sharedloginuser] setusername:username];

[[Loginuser Sharedloginuser] setpassword:password];

[[Loginuser Sharedloginuser] sethostname:hostname];

6. New. User login model and login Interface Focus processing