friend i want that , i have xib and that xib name is mapper ok and this xib i have one tab bar button and in this tabbar i give link of web server page which direct open the user registration from and user can fill there from easy ok on the registration from have submit button if user submit there data then after i have fast retrive there data from server database which user fill on registration from and that i have get username and password bec after the registration from complete then user come on login pagexib in this xib i have give a
authority to user please enter ur username and password if user enter there username and password he should chek from database it this username have or not and this all information i have to store from server to local database after this hapen then i have to match username and password from local database which i am sqlitedatabase it this possbel friend if yes then give me some information about yhis type of database save and retrive in iphone and please give me some small code of this releted this project
Check out the NSUserDefaults object in the apple docs
http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSUserDefaults_Class/Reference/Reference.html
It's as simple as this
-(void)saveCustomObject:(MyCustomObject*)obj
{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSData *myEncodedObject = [NSKeyedArchiver archivedDataWithRootObject:obj];
[defaults setObject:myEncodedObject forKey:#"myEncodedObjectKey"];
}
-(MyCustomObject*)loadCustomObjectWithKey:(NSString*)key
{
NSUserDefaults defaults = [NSUserDefaults standardUserDefaults];
NSData *myEncodedObject = [defaults objectForKey: key];
MyCustomObject* obj = (MyCustomObject*)[NSKeyedUnarchiver unarchiveObjectWithData: myEncodedObject];
return obj;
}
Related
I want to store username and password in a session , if a user login successfully then he will be directed to the welcome screen where a logout button is exist.
now if user close the application without log out the account and restart the app the he must be directed to the welcome screen skipping the login screen. and if user restart the app after logout then he must enter the username and password to come on welcome screen. help me out. i am new to iphone.
you may store the username and password in User Defaults or in Keychain (if want to keep it secure ). So on loading the app if you find username and password stored in Userdefaults , you may directly login to welcome screen and if not stored then show the login screen...
see this is the same as you want help with iphone session login
you can store whole array in the Userdefault, UserDefault is a one type of session in the iPhone...
here you can store any value or array in the UserDefaul..
In AppDelegate.h file just declare variable...
NSUserDefaults *userDefaults;
here it not compulsory to global declare this userDefault, you can direct use the userdefault where you want
after...
In AppDelegate.m Fille in applicationDidFinishLonching: Method or anywhere which you want to store username and pssword
userDefaults = [NSUserDefaults standardUserDefaults];
[userDefault setObject:yourName forKey:#"UserName"];
[userDefault setObject:yourPassword forKey:#"Password"];
[userDefault synchronize];
after that when you want get data from this UserDefaults Use Bellow Code...
NSString *userName = [[NSUserDefaults standardUserDefaults] valueForKey:#"UserName"];
NSString *password = [[NSUserDefaults standardUserDefaults] valueForKey:#"Password"];
i hope this helpful to you...
:)
I'd like to use an auto-login function. So when the user opens the app, he gets delegated to a "login screen". When he logged in successfully he should be directed to his account. I call this the "account screen". Now when the user restarts the app, he should directly get directed to his account, without seeing the "login screen".
The login function already works fine in my project (username and password are saved in UserDefault), but every time I close the app, I have to login again. So my question is: How do auto login the user? Or better said: How do I check if the data (saved in UserDefault) is the same as in the database (MYSQL)?
For the first time when the user login, you save the user
credentials in iPhone's keychain.
When the app is opened again, you check whether user credentials are
present in keychain and if yes, you code should call the login
logic and do auto login and go to screen after login screen. If no,
then you should show login screen. You can do this logic in AppDelegates applicationDidFinishLaunching.
Whenever user clicks the logout button, remove user credentials from
keychain first, and go back to login controller.
Simply you add login credentials to keychain when user logs in and only remove it once user clicks the logout button. If user quits the app without logout then the credentials will still be in keychain and you can retrieve them when user returns to the app.
EDIT: I think I must add one more thing..If your login logic takes time (like you login using web request or something), put the login logic code in your Login ViewController rather than ApplicationDelegate, and use any Activity Indicator during auto login process.
EDIT : I edited the entire answer, replaced NSUserDefault with Keychain. This thread explains why.
While saving Username and Password, it is highly advised to save in Keychain rather than the NSUserDefaults. Refer this post for a better understanding.
To answer the question: if you want to auto-login with keychain data, use the free framework "SFHFKeychainUtils". It saves username, password and servicename in keychain. if you want to retrieve it, just save the username in NSUserDefaults and you can get the password with ease.
Here we go:
SiFi HiFi Framework: https://github.com/ldandersen/scifihifi-iphone/tree/master/security
SiFi Hifi Framework (ARC compatible): https://stackoverflow.com/a/10348964/1011125
How to use SFHFKeychainUtils: http://gorgando.com/blog/technology/iphone_development/simple-iphone-tutorial-password-management-using-the-keychain-by-using-sfhfkeychainutils
I used a combination of NSUserDefaults and SSKeychain. I used NSUserDefaults to store the username nad SSKeychain to store the password.
This is the code I used to save the credentials
NSString *user = self.username.text;
NSString *password = self.pass.text;
[SSKeychain setPassword:password forService:#"achat" account:user];
NSUserDefaults *dUser = [NSUserDefaults standardUserDefaults];
[dUser setObject:user forKey:#"user"];
[dUser synchronize];
This is the code I used to retrieve the credentials
NSUserDefaults *eUser = [NSUserDefaults standardUserDefaults];
NSString *savedUser = [eUser objectForKey:#"user"];
if (!savedUser) {
UIAlertView *uhoh = [[UIAlertView alloc] initWithTitle:#"Oops!" message:#"Please enter your username and password." delegate:self cancelButtonTitle:#"Okay" otherButtonTitles:nil, nil];
[uhoh show];
}
else {
NSString *savedPass = [SSKeychain passwordForService:#"achat" account:savedUser];
self.username.text = savedUser;
self.pass.text = savedPass;
}
I created a web service application. I want my user to allways stay login after installition but i have no idea about how to do this. I save user informations in NSUserDefaults. Thank in Advance
EDIT I log into the server, user informations are firstly created on server and i sen Username&Password ect via a GET to the server. If this data sent in GET are the same with ones in server, the user will login into the application. Anything(content) of application comes from server after logging in.
NSString *savedUserName = [[NSUserDefaults standardUserDefaults] stringForKey:#"userName"];
NSString *savedUserPass = [[NSUserDefaults standardUserDefaults] stringForKey:#"userPass"];
if (savedUserName && savedUserPass){ // check for length as well
//don't show login, create user with these credentials
}
else{
[[NSUserDefaults standardUserDefaults] setObject:#"newUserName" forKey:#"userName"];
[[NSUserDefaults standardUserDefaults] setObject:#"newUserPass" forKey:#"userPass"];
//then show login for logging in as a new user
}
Don't forget to save nil or empty string when user logs out.
I am using XCode4 for development.
In my applicaion I need login to a website to get the information. then by using that I have to perform some task.
I am accessing the website by REST service call. After the ASIHttpRequest passed
I am setting the user name & password like this.
[request setuserName:#"usernameString"];
[request setpassword:#"Passwordstring"];
But I am not aware of whether any session created or not.
So at the time of log out I only redirect the controller to log in screen & made the userName and password field blank.
But after logout it is taking wrong user name and password to login again.
My question:
Whether I have to create a session while log in and time out the session at the time of log out. How to do that?
In iphone application how Log in & Log out generally done?
you best choice will be using NSUserDefaults class, example:
// saving your data.
NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults];
[standardUserDefaults setObject:myUsername forKey:#"username"];
// retrieve your data
NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults];
NSString *username = [standardUserDefaults objectForKey:#"username"];
you can also use NSUserDefaults to store the Log in status of the current session by for example storing a Boolean key for isLoggedIn key
[standardUserDefaults setBOOL:TRUE forKey:#"isLoggedIn"];
When the user wishes to log out just set the value to FALSE to offer the user the log in view again as if this is the first time the user is using the app.
You don't need to set timeout session for the logged in users, unless your design or the requirements said so, but you can also do that easily by using NSUserDefaults by storing the date and time of the user log in, and check that continuously to validate the session timeout, but I don't recommend to do such a thing, but everything is possible here.
Thanks all. This problem is solved.
At the time of log in, ASIHTTPRequest is creating a cookie object on successful log in. If a user did not spend 1 minute inside the application and came out by tapping sign out. After that it was taking any userId and password (garbage data) to login again. It happened because the previous cookie was taking care for that.
But, now at the time of sign out, I am deleting the cookie which is created at the time of log in.
I have added below code in sign out:-
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *each in [[[cookieStorage cookiesForURL:YOUR_URL] copy] autorelease])
{
// NSLog(#"cookie deleted==%#",each);
[cookieStorage deleteCookie:each];
}
AhmadTK's answer is fine, just a couple of points:
Always make sure you call [standardUserDefaults synchronize]; after setting values.
Initiate a check of the isLoggedIn item when the application starts, and if false, present the login screen for the user
Handle the logout process in the reverse (set the isLoggedIn value to NO)
I know this very regular question But i didn't get that's way ask here I hope people will me out .
I have application which have the login page .And when ever I login I get Token_ID from server .I get this TokenID with help of JSON.
But I want to add the Auto Login function to my application .For that My application look like this
It has the two text field (username and password)
one check box for auto login And login button
I need when ever user click on the check box which is for auto login It must store TokenID in application and when I close my application .And start the application again It must not ask for login me again.It start the same application with same TokenID which I store for that user not a new one .And if I click the log out button it must logout from application And release the TokenID from my application .And after that if start the application it must ask for login with out that it must not go further in application
For that I do R&D from two days .And I found that I must use the NSUserDefaults for storing the TokenID which I am getting at the time of login .I want know how can I store the TokenID
into application and How can check it out the user logout or not .And if user not logout it start the application.And if user logout than it must ask for login to start the application
OR is that any idea please give And explain me
Thank you
First result at google for "NSUSerDefaults Example"
On logout just overwrite the keys with nil and check on starting of the app if the key is nil
you can save username information
-(void)saveToUserDefaults:(NSString*)myString
{
NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults];
if (standardUserDefaults) {
[standardUserDefaults setObject:myString forKey:#"username"];
[standardUserDefaults synchronize];
}
}
if you have username information on NSUserDefaults, you can get your username information
-(NSString*)retrieveFromUserDefaults
{
NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults];
NSString *val = nil;
if (standardUserDefaults)
val = [standardUserDefaults objectForKey:#"username"];
return val;
}