好的，所以我创建了一个NSLURLRequest，它应该从服务器获取一个字符串并将其带回程序中。根据返回的字符串，程序应该转换到不同的视图。出于某种原因，即使控制台返回正确的字符串，也不会执行条件语句中的方法。这是我的代码：
#import "login.h"
@implementation login
@synthesize viewController;
@synthesize viewControllerTwo;
@synthesize userName;
@synthesize passWord;
@synthesize verified;
@synthesize receivedData;
@synthesize requestType;
/*
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
// Custom initialization
}
return self;
}
*/
-(IBAction)login{
[self performSelector:@selector(getAuthentication) withObject:nil afterDelay:0.5];
//[self performSelector:@selector(authenticate) withObject:nil afterDelay:5.0];
}
-(void)authenticate{
NSString *good = @"Done";
NSLog(@"%@", good);
if(verified == good){
[self performSelector:@selector(changeViewAdmin) withObject:nil afterDelay:1.0];
}
if(verified == @"user"){
[self performSelector:@selector(changeView) withObject:nil afterDelay:1.0];
}
if(verified == @"No"){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error"
message:@"Invalid UserName/Password combination!"
delegate:self
cancelButtonTitle:@"Okay"
otherButtonTitles:nil];
[alert show];
[alert release];
}
}
-(void)getAuthentication{
requestType = 1;
NSMutableString *urlWithParameters = [NSMutableString stringWithString:kLoginURL];
[urlWithParameters appendFormat:@"?userName=%@&passWord=%@", userName.text, passWord.text];
NSURLRequest *req = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:urlWithParameters]];
//NSLog(@"%@", req);
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:req delegate:self];
if(theConnection){
NSMutableData *data = [[NSMutableData alloc] init];
self.receivedData = data;
[data release];
}
[userName resignFirstResponder];
[passWord resignFirstResponder];
[req release];
}
-(void)changeView{
CATransition *transition = [CATransition animation];
transition.duration = 0.5;
transition.timingFunction = [CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseOut];
transition.delegate = self;
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromRight;
[self.view.layer addAnimation:transition forKey:@"transition3"];
viewController = [[MapMeViewController alloc] initWithNibName:@"MapMeViewController" bundle:[NSBundle mainBundle]];
[self.view addSubview:viewController.view];
}
-(void)changeViewAdmin{
CATransition *transition = [CATransition animation];
transition.duration = 0.5;
transition.timingFunction = [CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseOut];
transition.delegate = self;
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromRight;
[self.view.layer addAnimation:transition forKey:@"transition3"];
viewControllerTwo = [[AdminPanel alloc] initWithNibName:@"AdminPanel" bundle:[NSBundle mainBundle]];
[self.view addSubview:viewControllerTwo.view];
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[viewController release];
[viewControllerTwo release];
[userName release];
[passWord release];
[verified release];
[receivedData release];
[super dealloc];
}
#pragma mark -
#pragma mark NSURLConnection Callbacks
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
[receivedData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[receivedData appendData:data];
}
- (void)connection:(NSURLConnection *)connection
didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
/*// Access has failed two times...
if ([challenge previousFailureCount] > 1)
{
[kFormURL release];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Authentication Error"
message:@"Too many unsuccessul login attempts."
delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
[alert release];
}
else
{*/
// Answer the challenge
NSURLCredential *cred = [[[NSURLCredential alloc] initWithUser:@"//rightusername" password:@"//rightpassword"
persistence:NSURLCredentialPersistenceForSession] autorelease];
[[challenge sender] useCredential:cred forAuthenticationChallenge:challenge];
//}
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
[connection release];
self.receivedData = nil;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error"
message:[NSString stringWithFormat:@"Connection failed! Error - %@ (URL: %@)",[error localizedDescription], [[error userInfo] objectForKey:NSURLErrorFailingURLStringErrorKey]]
delegate:self
cancelButtonTitle:@"Bummer"
otherButtonTitles:nil];
[alert show];
[alert release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
NSString *payloadAsString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding];
verified = payloadAsString;
[payloadAsString release];
NSLog(@"%@", verified);
if(verified == @"Done"){
[self performSelector:@selector(changeViewAdmin) withObject:nil afterDelay:1.0];
}
//[payloadAsString release];
//NSLog(@"%@", verified);
// INSERT GOOGLE MAPS URL REQUEST HERE
/*if(requestType == 1){
NSString* addressText = payloadAsString;
// URL encode the spaces
addressText = [addressText stringByAddingPercentEscapesUsingEncoding: NSASCIIStringEncoding];
NSString* urlText = [NSString stringWithFormat:@"http://maps.google.com/maps?q=%@", addressText];
// lets throw this text on the log so we can view the url in the event we have an issue
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlText]];
// */
//
//}
[connection release];
self.receivedData = nil;
}
@end
答案 0 :(得分：3)
哎呀，不，不，不，......
if ( verified == @"Done" )
...你在这里比较指针而不是verified变量内容。你应该使用：
if ( [verified isEqualToString:@"Done"] )
P.S。格式化你的帖子，这是不可读的...我必须编辑它...