How do I autofill username and password in UIWebView iOS app? - ios5

Question

I am teaching myself how to program an iPhone app by looking at code examples from various sources online, so it is fair to say that I do not understand the language (yet).
I am have successfully built a UIWebView browser app that goes to a login page. However, I am trying to take it one step further by having the
Following Byron's code on his own stack overflow question, I have tried to follow in his footsteps.
Is it possible for a UIWebView to save and autofill previously entered form values (e.g., username & password)?
However, when the following line of code is live in the app, the browser will only load a blank page.
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType; {
I really appreciate any assistance to help get me back on the right track. Thank you very much,
Below is my entire code:
#import "ViewController.h"
// 6/13/2012 added to cache username and password
#import
#import "SFHFKeychainUtils.h"
// -----
#interface ViewController ()
#end
#implementation ViewController
#synthesize webView;
#synthesize spinner;
-(IBAction)goBack:(id)sender{
if ([webView canGoBack]) {
[webView goBack];
}
}
-(IBAction)goForward:(id)sender{
if ([webView canGoForward]){
[webView goForward];
}
}
- (void)viewDidLoad
{
NSURL *url = [NSURL URLWithString:#"http://xxxxxx.com/weblink/hh_login.html"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[webView loadRequest:request];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
// 6/13/2012 added to cache username and password
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType; {
//save form data
if(navigationType == UIWebViewNavigationTypeFormSubmitted) {
//grab the data from the page
NSString *username = [self.webView stringByEvaluatingJavaScriptFromString: #"document.myForm.username.value"];
NSString *password = [self.webView stringByEvaluatingJavaScriptFromString: #"document.myForm.password.value"];
//store values locally
[[NSUserDefaults standardUserDefaults] setObject:username forKey:#"username"];
[SFHFKeychainUtils storeUsername:username andPassword:password forServiceName:#"MyService" updateExisting:YES error:nil];
}
}
// -----
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (void)webViewDidStartLoad:(UIWebView *)webView {
[spinner startAnimating];
}
//- (void)webViewDidFinishLoad:(UIWebView *)webView {
// [spinner stopAnimating];
//}
// 6/13/2012 added to cache username and password
- (void)webViewDidFinishLoad:(UIWebView *)webView{
[spinner stopAnimating];
//verify view is on the login page of the site (simplified)
NSURL *requestURL = [self.webView.request URL];
if ([requestURL.host isEqualToString:#"http://xxxxxx.com/weblink/hh_login.html"]) {
//check for stored login credentials
NSString *username = [[NSUserDefaults standardUserDefaults] objectForKey:#"username"];
if (username.length != 0 ) {
//create js strings
NSString *loadUsernameJS = [NSString stringWithFormat:#"document.myForm.username.value ='%#'", username];
NSString *password = [SFHFKeychainUtils getPasswordForUsername: username andServiceName:#"MyService" error:nil];
if (password.length == 0 ) password = #"";
NSString *loadPasswordJS = [NSString stringWithFormat:#"document.myForm.password.value ='%#'", password];
//autofill the form
[self.webView stringByEvaluatingJavaScriptFromString: loadUsernameJS];
[self.webView stringByEvaluatingJavaScriptFromString: loadPasswordJS];
}
}
}
// -----
#end

Answer 1

TRY BELOW ONE
You need to fill the credential when webview has loaded .
below is the delegate method of UIWebView called when the WebView has loaded.At this time pass the credential not as were passing before loading the UIWebView which is not correct.
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
if(!isLoggedIn){//just load only onetime.
//pass the login Credintails into textfield of WebView.
NSString* userId = #"userName" //here just replace that string to the username
NSString* password = #"password";//here just replace that string to the password
if(userId != nil && password != nil ){
NSString* jScriptString1 = [NSString stringWithFormat:#"document.getElementById('username').value='%#'", userId];
//username is the id for username field in Login form
NSString* jScriptString2 = [NSString stringWithFormat:#"document.getElementById('password').value='%#'", password];
//here password is the id for password field in Login Form
//Now Call The Javascript for entring these Credential in login Form
[webView stringByEvaluatingJavaScriptFromString:jScriptString1];
[webView stringByEvaluatingJavaScriptFromString:jScriptString2];
//Further if you want to submit login Form Automatically the you may use below line
[webView stringByEvaluatingJavaScriptFromString:#"document.forms['login_form'].submit();"];
// here 'login_form' is the id name of LoginForm
}
isLoggedIn=TRUE;
}
}
It'll really help you.