how can an UIAlertView button calls another function? - objective-c

-(void)buPressed{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Game Over"
message:#"YOU LOST! ALL YOUR BASE ARE BELONG TO US!"
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Publish", nil];
[alertView show];
[alertView release];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if(buttonIndex==0){
NSLog(#"%d",buttonIndex);
}
else{
[self bPressed];
}
}
-(void)bPressed{
ModalViewConroller *yeniSayfa=[[ModalViewConroller alloc] init];
yeniSayfa.modalTransitionStyle=UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:yeniSayfa animated:YES];
[yeniSayfa release];
//Restore to Defaults
[button_1 setSelected:NO];
[button_2 setSelected:NO];
[button_3 setSelected:NO];
[button_4 setSelected:NO];
[button_5 setSelected:NO];
[button_6 setSelected:NO];
slider.value=50.00;
UIImage *image = [UIImage imageNamed:#"Smiley_00025.png"];
imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(81, 43, image.size.width, image.size.height);
[self.view addSubview:imageView];
}
This is my code i want to make the publish button to call bPressed function but it is giving a warning and the program crashes when i touch the publish button i want to open a modalview when i push the publish button can anybody help me?

You need to declare the function in your header file so that other objects (in this case an instance of UIAlertView, since its delegate is set to your class) know that this method exists.
So, in your whatever_class.h file, add the following line below the #interface{ }:
-(void)bPressed;

Related

Extracting input from a UIAlertView text box Objective-C

I have gotten too frustrated from trying to find an answer to this, so I will as a question...
How can I get the raw text from a UIAlertView text box in Objective-C?
Here is my code:
UIButton *AppCrashButton = [UIButton buttonWithType: UIButtonTypeCustom];
AppCrashButton.frame = CGRectMake(0, (self.view.frame.size.height - 44) / 6 * 1, self.view.frame.size.width, (self.view.frame.size.height - 44) / 6);
[AppCrashButton setTitle: #"Ping" forState: UIControlStateNormal];
[AppCrashButton addTarget: self action: #selector(Click) forControlEvents: UIControlEventTouchUpInside];
AppCrashButton.backgroundColor = [UIColor colorWithRed:0.19 green:0.19 blue:0.19 alpha:1.0];
AppCrashButton.layer.borderColor = [UIColor colorWithRed:0.96 green:0.26 blue:0.21 alpha:1.0].CGColor;
AppCrashButton.layer.borderWidth = 0.5f;
[self.view addSubview: AppCrashButton];
-(void) Click {
UIAlertView *AppCrashAlert = [[UIAlertView alloc] initWithTitle: #"IP Ping" message: #"Please enter the IP address" delegate: self cancelButtonTitle: #"Cancel" otherButtonTitles: #"OK", nil];
AppCrashAlert.alertViewStyle = UIAlertViewStylePlainTextInput;
[AppCrashAlert show];
[AppCrashAlert release];
}
It shows a custom button, that once clicked, executes the "Click" method, which pings a host.
I was wondering how I could get the text from the text input.
Thanks
Set UIAlertViewDelegate delegate to Your controller
#interface YourViewController ()<UIAlertViewDelegate>
After that when you create your UIAlertView set it's delegate to Self In your case here
UIAlertView *AppCrashAlert = [[UIAlertView alloc] initWithTitle: #"IP Ping" message: #"Please enter the IP address" delegate: self cancelButtonTitle: #"Cancel" otherButtonTitles: #"OK", nil];
AppCrashAlert.alertViewStyle = UIAlertViewStylePlainTextInput;
// Set delegate
AppCrashAlert.delegate = Self;
[AppCrashAlert show];
[AppCrashAlert release];
Then,
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex(NSInteger)buttonIndex{
NSLog(#"Text : %#",[[alertView textFieldAtIndex:0] text]);
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
NSLog(#"Entered: %#",[[alertView textFieldAtIndex:0] text]);
}
To get entered text in UIAlertView text field

textField does not show in the alertView

Here is my code:
UIAlertView *theAlert = [[UIAlertView alloc] initWithTitle:#"Alert" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
UITextField *textField = [[UITextField alloc] initWithFrame: CGRectMake(12, 45, 260, 30)];
[textField setBackgroundColor: [UIColor clearColor]];
textField.borderStyle = UITextBorderStyleRoundedRect;
[theAlert addSubview:textField];
[theAlert show];
[textField release];
[theAlert release];
There is no textFiled in alertView, only a title "Alert" and a button "OK"
I will refer you the Apple Documentation in regards to UIAlertView Class Reference. Specifically
Subclassing Notes
The UIAlertView class is intended to be used as-is and does not support subclassing. The view hierarchy for this class is private and must not be modified
So what this means is you can't add subviews to an instance of UIAlertView the recent UIAlertView still has the addSubview: method is because UIAlertView is a subclass of UIView which has this method, but as of iOS7 the method addSubview: for UIAlertView no longer calls the super method on UIView it just does nothing.
So basically what you are after is not possible.
There are however alertViewStyles that you can use like UIAlertViewStylePlainTextInput which will add a single UITextField to the UIAlertView which you can then access using the method textFieldAtIndex:. However please be aware that you can't really do anything with this again because it is part of the UIAlertViews hierarchy so again it is made to be used as is.
Messing with the UIAlertView hierarchy will get your app rejected from the Apple Review process under
2.5 - Apps that use non-public APIs will be rejected
your background color is clear so It's not showing
[textField setBackgroundColor: [UIColor redColor]];.
and also show default text field
theAlert.alertViewStyle = UIAlertViewStylePlainTextInput;
//or for username and password
theAlert.alertViewStyle = UIAlertViewStyleLoginAndPasswordInput;
// or for password
theAlert.alertViewStyle = UIAlertViewStyleSecureTextInput;
Try this
You can use the default alertView with textfield.For that you need to set the alertViewStyle
[message setAlertViewStyle:UIAlertViewStylePlainTextInput];
Here message is object of alertView.
You can get the textfield value using the delegate method as shown below
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if([title isEqualToString:#"Login"]) {
UITextField *username = [alertView textFieldAtIndex:0];
UITextField *password = [alertView textFieldAtIndex:1];
NSLog(#"Username: %#\nPassword: %#", username.text, password.text);
}
}
Or you can set alert.alertViewStyle = UIAlertViewStylePlainTextInput;
This will add a text field for you. You can access it in the
UIAlertView delegate callback by using
UITextField *textField = [alertView textFieldAtIndex:0];
If your using ios 7 then add below code to your set of code
theAlert.alertViewStyle=UIAlertViewStylePlainTextInput;
Full code
UIAlertView *theAlert = [[UIAlertView alloc] initWithTitle:#"Alert" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
UITextField *textField = [[UITextField alloc] initWithFrame: CGRectMake(12, 45, 260, 30)];
[textField setBackgroundColor: [UIColor greenColor]];
textField.borderStyle = UITextBorderStyleRoundedRect;
theAlert.alertViewStyle=UIAlertViewStylePlainTextInput;
[theAlert show];

Actionsheet buttons do not respond when using showInView

I have this code on my program
- (void)viewDidLoad
{
[super viewDidLoad];
UIButton *saveMessageBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[saveMessageBtn setImage:[UIImage imageNamed:#"btn_done.png"] forState:UIControlStateNormal];
[saveMessageBtn addTarget:self action:#selector(saveMessage) forControlEvents:UIControlEventTouchUpInside];
[saveMessageBtn setFrame:CGRectMake(0, 0, 49, 30)];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:saveMessageBtn];
}
-(IBAction)saveMessage:(id)sender{
UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:nil cancelButtonTitle:#"Cancel" destructiveButtonTitle:nil otherButtonTitles:#"Send Now",#"Non Recurring",#"Recurring", nil];
[actionSheet showInView:self.view];
}
- (void)actionSheet:(UIActionSheet *) actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0){
NSLog(#"Send Now");
}
else if (buttonIndex == 1){
[self performSegueWithIdentifier:#"modalNonRecurring" sender:self];
}
else if (buttonIndex == 2){
[self performSegueWithIdentifier:#"modalRecurring" sender:self];
}
else{
NSLog(#"Cancel Clicked");
}
}
as you can see in the code, it supposed to perform a segue or do 'NSLog' when a particular button clicked.
But when I click a button, it does not perform what I want it to do, instead it displays this message in the debug area..
Presenting action sheet clipped by its superview. Some controls might not respond to touches. On iPhone try -[UIActionSheet showFromTabBar:] or -[UIActionSheet showFromToolbar:] instead of -[UIActionSheet showInView:].
By the way, I am using a UINavigationController that is inside a UITabBarController.
Anyone that has a great idea how to fix this? your help would be much appreciated. Thanks!
Add UIActionSheetDelegate delegate in .h file and try like this then it'l work.
UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:nil cancelButtonTitle:#"Cancel" destructiveButtonTitle:nil otherButtonTitles:#"Send Now",#"Non Recurring",#"Recurring", nil];
actionSheet.delegate = self;
[actionSheet showInView:self.view];

Custom AlertView With Background

Everybody, I need to set one image on UIAlertView..
I have attached my UIAlertview with image prob..
i have used this code lines..
UIAlertView *theAlert = [[[UIAlertView alloc] initWithTitle:#"Atention"
message: #"YOUR MESSAGE HERE", nil)
delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil] autorelease];
[theAlert show];
UILabel *theTitle = [theAlert valueForKey:#"_titleLabel"];
[theTitle setTextColor:[UIColor redColor]];
UILabel *theBody = [theAlert valueForKey:#"_bodyTextLabel"];
[theBody setTextColor:[UIColor blueColor]];
UIImage *theImage = [UIImage imageNamed:#"Background.png"];
theImage = [theImage stretchableImageWithLeftCapWidth:16 topCapHeight:16];
CGSize theSize = [theAlert frame].size;
UIGraphicsBeginImageContext(theSize);
[theImage drawInRect:CGRectMake(0, 0, theSize.width, theSize.height)];
theImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[[theAlert layer] setContents:[theImage CGImage]];
please solve this issue..
i need only image with alert..
Try this...
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"UIAlert View" message:#"hello" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:#"Close",nil];
UIImage *alertImage = [UIImage imageNamed:#"plus.png"];
UIImageView *backgroundImageView = [[UIImageView alloc] initWithImage:alertImage];
backgroundImageView.frame = CGRectMake(0, 0, 282, 130);
backgroundImageView.contentMode = UIViewContentModeScaleToFill;
[alert addSubview:backgroundImageView];
[alert sendSubviewToBack:backgroundImageView];
[alert show];
[alert release];
You should consider to not use UIAlertView, but have your own AlertView see TSAlertView for an alternative implementation, that is not derived from UIAlertView.
TSAlertView is allowing you to set your own background image.
Another solution that I am not recommending could be:
You can use introspection: Loop over the UIAlertViews subviews, identify the one that holds the background image set it hidden and place your own backroundimage at an index below/over the original image view.
I found this project: Subclass UIAlertView to customize the look of an alert. It is not working for iOS 4.2+, but with my introspection idea you can make it work again:
change the -layoutSubviews of JKCustomAlert to:
- (void) layoutSubviews {
for (UIView *v in [self subviews]) {
if ([v class] == [UIImageView class]) {
[v setHidden:YES];
}
}
alertTextLabel.transform = CGAffineTransformIdentity;
[alertTextLabel sizeToFit];
CGRect textRect = alertTextLabel.frame;
textRect.origin.x = (CGRectGetWidth(self.bounds) - CGRectGetWidth(textRect)) / 2;
textRect.origin.y = (CGRectGetHeight(self.bounds) - CGRectGetHeight(textRect)) / 2;
textRect.origin.y -= 30.0;
alertTextLabel.frame = textRect;
alertTextLabel.transform = CGAffineTransformMakeRotation(- M_PI * .08);
}
I am NOT promising, that this trick will work in future versions of iOS
A solution I like to use for this is to add a UIView to the ViewController, which mimics the appearance of an alert.
The other property of a UIAlertView is that no other part of the app can be used until the alert is dismissed. This can easily be mimicked by making your UIView a subview of another UIView (with a clear background), which takes up the entire screen.
If you don't want to implement that yourself, here's a Custom Alert View class you could use: https://github.com/shivsak/CustomAlertView

UIAlertView causes crash in Release mode

If the Help option is activated in my app when the user goes to the camera I show a UIAlertView first with tips on how to take a picture:
-(void) actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex != [actionSheet cancelButtonIndex]) {
NSString *selectedButtonTitle = [actionSheet buttonTitleAtIndex:buttonIndex];
if ([selectedButtonTitle isEqualToString:#"Camera"]) {
// If Help is activated display camera tips
if (helpEnabled == YES) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Camera Tips" message:#"\n\n\n\n\n\n\n\n\n\n\n\n" delegate:self cancelButtonTitle:nil otherButtonTitles:#"Go To Camera"];
UIImageView *cameraHelpView = [[UIImageView alloc] initWithFrame:CGRectMake(17, 40, 250, 255)];
UIImage *cameraTutorial = [UIImage imageNamed:#"Camera_Tips.png"];
cameraHelpView.image = cameraTutorial;
[alert addSubview:cameraHelpView];
[cameraHelpView release];
[alert show];
[alert release];
}
}
}
This works in Debug mode but causes an "EXC BAD ACCESS" error in Release mode. I can present a new view controller modally from this point just fine, however the UIAlertView will always crash the app. Why?
I don't know why it works in debug mode, but it looks like you are releasing your cameraHelpView while it is still being used. In the subviews of alert is a pointer to cameraHelpView; when you release that, it can no longer be accessed. I would suggest replacing all of your -[NSObject release] calls in this context with -[NSObject autorelease]. Thus:
UIAlertView *alert = [[[UIAlertView alloc] initWithTitle:#"Camera Tips" message:#"\n\n\n\n\n\n\n\n\n\n\n\n" delegate:self cancelButtonTitle:nil otherButtonTitles:#"Go To Camera"] autorelease];
UIImage *cameraTutorial = [UIImage imageNamed:#"Camera_Tips.png"];
UIImageView *cameraHelpView = [[[UIImageView alloc] initWithFrame:CGRectMake(17, 40, 250, 255)] autorelease];
cameraHelpView.image = cameraTutorial;
[alert addSubview:cameraHelpView];
[alert show];
Go ahead and try that and let me know if it works. Good luck!
I found my mistake. I wasn't passing nil as the final argument to otherButtonTitles! Debug mode must see and fix this error for you. Hope this helps someone.