I have some twitter code I modified from: http://amanpages.com/sample-iphone-example-project/twitteragent-tutorial-tweet-from-iphone-app-in-one-line-code-with-auto-tinyurl/
His code used view alerts to login and post to twitter but I wanted to change mine to use windows. It is mostly working and I can login and post to Twitter. However, when I try to post a second time, the program crashes with a: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[NSCFString text]: unrecognized selector sent to instance 0xc2d560'
I'm a bit of a coding newbie so any help would be appreciated. If I need to post more code, ask.
#import "TwitterController.h"
#import "xmacros.h"
#define XAGENTS_TWITTER_CONFIG_FILE DOC_PATH(@"xagents_twitter_conifg_file.plist")
static TwitterController* agent;
@implementation TwitterController
BOOL isLoggedIn;
@synthesize parentsv, sharedLink;
-(id)init
{
self = [super init];
maxCharLength = 140;
parentsv = nil;
isLogged = NO;
isLoggedIn = NO;
txtMessage = [[UITextView alloc] initWithFrame:CGRectMake(30, 225, 250, 60)];
UIImageView* bg = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"fb_message_bg.png"]];
bg.frame = txtMessage.frame;
lblCharLeft = [[UILabel alloc] initWithFrame:CGRectMake(15, 142, 250, 20)];
lblCharLeft.font = [UIFont systemFontOfSize:10.0f];
lblCharLeft.textAlignment = UITextAlignmentRight;
lblCharLeft.textColor = [UIColor whiteColor];
lblCharLeft.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0];
txtUsername = [[UITextField alloc]initWithFrame:CGRectMake(125, 190, 150, 30)];
txtPassword = [[UITextField alloc]initWithFrame:CGRectMake(125, 225, 150, 30)];
txtPassword.secureTextEntry = YES;
lblId = [[UILabel alloc]initWithFrame:CGRectMake(15, 190, 100, 30)];
lblPassword = [[UILabel alloc]initWithFrame:CGRectMake(15, 225, 100, 30)];
lblTitle = [[UILabel alloc]initWithFrame:CGRectMake(80, 170, 190, 30)];
lblId.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0];
lblPassword.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0];
lblTitle.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0];
lblId.textColor = [UIColor whiteColor];
lblPassword.textColor = [UIColor whiteColor];
lblTitle.textColor = [UIColor whiteColor];
txtMessage.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0];
lblId.text = @"Username:";
lblPassword.text =@"Password:";
lblTitle.text = @"Tweet This Message";
lblId.textAlignment = UITextAlignmentRight;
lblPassword.textAlignment = UITextAlignmentRight;
lblTitle.textAlignment = UITextAlignmentCenter;
txtUsername.borderStyle = UITextBorderStyleRoundedRect;
txtPassword.borderStyle = UITextBorderStyleRoundedRect;
txtMessage.delegate = self;
txtUsername.delegate = self;
txtPassword.delegate = self;
login = [[UIButton alloc] init];
login = [UIButton buttonWithType:UIButtonTypeRoundedRect];
login.frame = CGRectMake(165, 300, 100, 30);
[login setTitle:@"Login" forState:UIControlStateNormal];
[login addTarget:self action:@selector(onLogin) forControlEvents:UIControlEventTouchUpInside];
cancel = [[UIButton alloc] init];
cancel = [UIButton buttonWithType:UIButtonTypeRoundedRect];
cancel.frame = CGRectMake(45, 300, 100, 30);
[cancel setTitle:@"Back" forState:UIControlStateNormal];
[cancel addTarget:self action:@selector(onCancel) forControlEvents:UIControlEventTouchUpInside];
post = [[UIButton alloc] init];
post = [UIButton buttonWithType:UIButtonTypeRoundedRect];
post.frame = CGRectMake(165, 300, 100, 30);
[post setTitle:@"Post" forState:UIControlStateNormal];
[post addTarget:self action:@selector(onPost) forControlEvents:UIControlEventTouchUpInside];
back = [[UIButton alloc] init];
back = [UIButton buttonWithType:UIButtonTypeRoundedRect];
back.frame = CGRectMake(45, 300, 100, 30);
[back setTitle:@"Back" forState:UIControlStateNormal];
[back addTarget:self action:@selector(onCancel) forControlEvents:UIControlEventTouchUpInside];
loading1 = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
loading1.frame = CGRectMake(140, 375, 40, 40);
loading1.hidesWhenStopped = YES;
[loading1 stopAnimating];
loading2 = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
loading2.frame = CGRectMake(140, 375, 40, 40);
loading2.hidesWhenStopped = YES;
[loading2 stopAnimating];
twitterWindow = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[twitterWindow addSubview:txtUsername];
[twitterWindow addSubview:txtPassword];
[twitterWindow addSubview:lblId];
[twitterWindow addSubview:lblPassword];
[twitterWindow addSubview:login];
[twitterWindow addSubview:cancel];
[twitterWindow addSubview:loading1];
UIImageView* logo = [[UIImageView alloc] initWithFrame:CGRectMake(35, 165, 48, 48)];
logo.image = [UIImage imageNamed:@"Twitter_logo.png"];
[twitterWindow addSubview:logo];
[logo release];
twitterWindow2 = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[twitterWindow2 addSubview:lblTitle];
[twitterWindow2 addSubview:lblCharLeft];
[twitterWindow2 addSubview:bg];
[twitterWindow2 addSubview:txtMessage];
[twitterWindow2 addSubview:lblURL];
[twitterWindow2 addSubview:post];
[twitterWindow2 addSubview:back];
[twitterWindow2 addSubview:loading2];
[twitterWindow2 bringSubviewToFront:txtMessage];
UIImageView* logo1 = [[UIImageView alloc] initWithFrame:CGRectMake(35, 155, 42, 42)];
logo1.image = [UIImage imageNamed:@"twitter-logo-twit.png"];
[twitterWindow2 addSubview:logo1];
[logo1 release];
twitterWindow.hidden = YES;
twitterWindow2.hidden = YES;
return self;
}
-(void) onStart
{
[[UIApplication sharedApplication]setStatusBarOrientation:UIInterfaceOrientationPortrait];
twitterWindow.hidden = NO;
[twitterWindow makeKeyWindow];
[self refresh];
if(isLogged)
{
twitterWindow.hidden = YES;
twitterWindow2.hidden = NO;
[twitterWindow2 makeKeyWindow];
}
}
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
[textField becomeFirstResponder];
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return NO;
}
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{
const char* str = [text UTF8String];
int s = str[0];
if(s!=0)
if((range.location + range.length) > maxCharLength){
return NO;
}else{
int left = 139 - ([sharedLink length] + [textView.text length]);
lblCharLeft.text= [NSString stringWithFormat:@"%d",left];
// this fix was done by Jackie
//http://amanpages.com/sample-iphone-example-project/twitteragent-tutorial-tweet-from-iphone-app-in-one-line-code-with-auto-tinyurl/#comment-38026299
if([text isEqualToString:@"\n"]){
[textView resignFirstResponder];
return FALSE;
}else{
return YES;
}
}
int left = 139 - ([sharedLink length] + [textView.text length]);
lblCharLeft.text= [NSString stringWithFormat:@"%d",left];
return YES;
}
-(void) onLogin
{
[loading1 startAnimating];
NSString *postURL = @"http://twitter.com/statuses/update.xml";
NSString *myRequestString = [NSString stringWithFormat:@""];
NSData *myRequestData = [ NSData dataWithBytes: [ myRequestString UTF8String ] length: [ myRequestString length ] ];
NSMutableURLRequest *request = [ [ NSMutableURLRequest alloc ] initWithURL: [ NSURL URLWithString:postURL ] ];
[ request setHTTPMethod: @"POST" ];
[ request setHTTPBody: myRequestData ];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
if (!theConnection) {
UIAlertView* aler = [[UIAlertView alloc] initWithTitle:@"Network Error" message:@"Failed to Connect to twitter" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[aler show];
[aler release];
}
[request release];
}
-(void) onCancel
{
[[NSUserDefaults standardUserDefaults] setValue:@"NotActive" forKey:@"Twitter"];
twitterWindow.hidden = YES;
[[UIApplication sharedApplication]setStatusBarOrientation:UIInterfaceOrientationLandscapeRight];
}
-(void) onPost
{
[loading2 startAnimating];
NSString *postURL = @"http://twitter.com/statuses/update.xml";
NSString *myRequestString;
if(sharedLink){
myRequestString = [NSString stringWithFormat:@"&status=%@",[NSString stringWithFormat:@"%@\n%@",txtMessage.text,sharedLink]];
}else{
myRequestString = [NSString stringWithFormat:@"&status=%@",[NSString stringWithFormat:@"%@",txtMessage.text]];
}
NSData *myRequestData = [ NSData dataWithBytes: [ myRequestString UTF8String ] length: [ myRequestString length ] ];
NSMutableURLRequest *request = [ [ NSMutableURLRequest alloc ] initWithURL: [ NSURL URLWithString:postURL ] ];
[ request setHTTPMethod: @"POST" ];
[ request setHTTPBody: myRequestData ];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
if (!theConnection) {
UIAlertView* aler = [[UIAlertView alloc] initWithTitle:@"Network Error" message:@"Failed to Connect to twitter" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[aler show];
[aler release];
}
[request release];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
// release the connection, and the data object
[connection release];
if(isAuthFailed){
UIAlertView* aler = [[UIAlertView alloc] initWithTitle:@"Login Failed" message:@"Invalid ID/Password" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[aler show];
[aler release];
}else{
UIAlertView* aler = [[UIAlertView alloc] initWithTitle:@"Connection Failed" message:@"Failed to connect to Twitter" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[aler show];
[aler release];
}
isAuthFailed = NO;
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
isAuthFailed = NO;
[loading1 stopAnimating];
[loading2 stopAnimating];
if(isLogged)
{
UIAlertView* aler = [[UIAlertView alloc] initWithTitle:@"Twitter" message:@"Tweet Posted!" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[aler show];
[aler release];
txtMessage = @"";
[self refresh];
}
else
{
twitterWindow.hidden = YES;
twitterWindow2.hidden = NO;
[[NSNotificationCenter defaultCenter] postNotificationName:@"notifyTwitterLoggedIn" object:nil userInfo:nil];
}
isLogged = YES;
isLoggedIn = YES;
}
-(void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
NSDictionary* config = [NSDictionary dictionaryWithObjectsAndKeys:txtUsername.text,@"username",txtPassword.text,@"password",nil];
[config writeToFile:XAGENTS_TWITTER_CONFIG_FILE atomically:YES];
if ([challenge previousFailureCount] == 0) {
NSURLCredential *newCredential;
newCredential=[NSURLCredential credentialWithUser:txtUsername.text
password:txtPassword.text
persistence:NSURLCredentialPersistenceNone];
[[challenge sender] useCredential:newCredential
forAuthenticationChallenge:challenge];
} else {
isAuthFailed = YES;
[[challenge sender] cancelAuthenticationChallenge:challenge];
}
}
-(void) refresh
{
NSDictionary* config = [NSDictionary dictionaryWithContentsOfFile:XAGENTS_TWITTER_CONFIG_FILE];
if(config){
NSString* uname = [config valueForKey:@"username"];
if(uname){
txtUsername.text = uname;
}
NSString* pw = [config valueForKey:@"password"];
if(pw){
txtPassword.text = pw;
}
}
}
+ (TwitterController*)defaultAgent{
if(!agent){
agent = [TwitterController new];
}
return agent;
}
-(void)dealloc
{
[super dealloc];
[txtMessage release];
[txtUsername release];
[txtPassword release];
[lblId release];
[lblPassword release];
[lblURL release];
[twitterWindow2 release];
[twitterWindow release];
}
@end
