I have a UILongPressGestureRecognizer added to a UITextField. When I press the UITextField it is show me alert but that is three alert show me.
That is my code:
- (void)viewDidLoad
{
[super viewDidLoad];
UILongPressGestureRecognizer *gs = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:#selector(AlertServer:)];
gs.delegate = self;
[_companyidTxt addGestureRecognizer:gs];
[gs release];
}
-(void)AlertServer:(UILongPressGestureRecognizer *)gs
{
alertView = [[UIAlertView alloc] initWithTitle:#"Server" message:#"" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Okay", nil];
alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
myTextField = [alertView textFieldAtIndex:0];
myTextField.text=mainString;
[alertView show];
[alertView release];
[alertView retain];
}
Can anyone explain why this happens, and how it can be prevented?
Thanx in advance
Try this,
- (void)AlertServer:(UILongPressGestureRecognizer*)sender {
if (sender.state == UIGestureRecognizerStateEnded) {
alertView = [[UIAlertView alloc] initWithTitle:#"Server" message:#"" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Okay", nil];
alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
myTextField = [alertView textFieldAtIndex:0];
myTextField.text=mainString;
[alertView show];
[alertView release];
}
else if (sender.state == UIGestureRecognizerStateBegan){
NSLog(#"UIGestureRecognizerStateBegan.");
//Do Whatever You want on Began of Gesture
}
}
Change your longPressGestureRecognizer.minimumPressDuration based on your observations (The time interval is in seconds. The default duration is is 0.5 seconds.) or use some flag to check if Alert is already shown.
Related
When I have the following code the clickedButtonAtIndex delegate method is called:
UIAlertView * alertTextField = [[UIAlertView alloc] initWithTitle:#"Post To Facebook" message:#"What would you like the post to say?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Continue", nil];
alertTextField.tag = 2;
[alertTextField show];
But when i add in the UIAlertViewStylePlainTextInput in the delegate method is not called.
UIAlertView * alertTextField = [[UIAlertView alloc] initWithTitle:#"Post To Facebook" message:#"What would you like the post to say?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Continue", nil];
[alertTextField setAlertViewStyle:UIAlertViewStylePlainTextInput];
alertTextField.tag = 2;
[alertTextField show];
Why is this?
ensure that you added <UIAlertViewDelegate> in your view controller and your forget to add alertTextField.delegate = self; Then implement the delegate to receive the event.
UIAlertView * alertTextField = [[UIAlertView alloc] initWithTitle:#"Post To Facebook" message:#"What would you like the post to say?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Continue", nil];
[alertTextField setAlertViewStyle:UIAlertViewStylePlainTextInput];
alertTextField.delegate = self; // you forget to add this line
alertTextField.tag = 2;
[alertTextField show];
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0) {
NSString *test = [[alertView textFieldAtIndex:0] text];
}
}
UIAlertView no longer available/support in iOS 8 and above so in this place use UIAlertViewController, example for how to use UIAlertViewController see this tutorial
Can we programmatically insert text in UIAlertView's textfield, iOS7
Created UIAlertView with textinput in IOS7.
Can anyone help me with "inserting text programatically in textfield"?
Hopefully this will give answer for your question.
UIAlertView *alertView = [[UIAlertView alloc] init];
alertView.delegate = self;
alertView.title = #"Enter Info";
alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
[alertView addButtonWithTitle:#"Cancel"];
[alertView addButtonWithTitle:#"OK"];
[alertView textFieldAtIndex:0].text = #"My Text";
[alertView show];
You can achieve this by using this code
UIAlertView *alert=[[UIAlertView alloc]initWithTitle:#"" message:#"whatever you like" delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:#"Cancel", nil];
alert.alertViewStyle=UIAlertViewStylePlainTextInput;
[alert textFieldAtIndex:0].text=#"Hello";
[alert show];
and result will be like this:
Please try to use like this..
UIAlertView* av = [[UIAlertView alloc] init];
[av setDelegate:self];
[av setTitle:#"Hi"];
[av setMessage:nil];
[av addButtonWithTitle:#"Cancel"];
[av addButtonWithTitle:#"OK"];
av.alertViewStyle = UIAlertViewStylePlainTextInput;
[av textFieldAtIndex:0].text = #"Text";
You can use text property to set text inside textfield.
textFiled.text = #"YOUR TEXT";
i want to do a simple alertView and ask for the phone number...
UIAlertView *message = [[UIAlertView alloc] initWithTitle:#"What is your phone number?"
message:nil
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Continue", nil];
message.alertViewStyle = UIAlertViewStylePlainTextInput;
UITextField* answerField = [message textFieldAtIndex:0];
answerField.keyboardType = UIKeyboardTypeNumberPad;
answerField.placeholder = #"+43 ...";
[message show];
And what do i have to put here into to check up something with the number (Like Mysql, etc.)
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
UITextField *textField = [alertView textFieldAtIndex:0];
?????????
// Something like if (textField == "090012345678") -> NSLog(#"WOW"); ...
}
If you don't know how to compare if two strings are the same then may I recommend that you seek out some basic tutorials on Objective-C.
if ([textField.text isEqualToString:#"090012345678"]) {
NSLog(#"WOW");
}
I having problem in displaying the textfield keyboard type in the alertview. I want to display numberpad keyboard but it not working.
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
switch (alertView.tag) {
case 1:
if (buttonIndex == 0) {
UITextField *textField = [alertView textFieldAtIndex:0];
textField.keyboardType = UIKeyboardTypeNumberPad;
[self performSelectorOnMainThread:#selector(ProcessDeleteTransaction:) withObject:textField.text waitUntilDone:NO];
}
break;
case 2:
[self.navigationController popToRootViewControllerAnimated:YES];
break;
default:
break;
}
}
Try this:
UIAlertView *a = [[UIAlertView alloc] initWithTitle:#"Howdie" message:#"msg" delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil];
a.alertViewStyle = UIAlertViewStylePlainTextInput;
UITextField *textField = [a textFieldAtIndex:0];
assert(textField);
textField.keyboardType = UIKeyboardTypeNumberPad;
[a show];
I'm not really sure why you're posting code for your UIAlertViewDelegate method. Why not configure the keyboard type when the UIAlertView is created?
I actually had never tried this before but had a minute to give it a shot, and this code works fine:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:#"Test" delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
UITextField *textField = [alert textFieldAtIndex:0];
textField.keyboardType = UIKeyboardTypeNumberPad;
[alert show];
As you know, - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex is a delegate method called when the user clicks a button on an alert view, but the textField.keyboardType should be set before becomeFirstResponder..so you should set keyboardType property once [[UIAlertView alloc] init]
Try this:
- (void)willPresentAlertView:(UIAlertView *)alertView {
[[alertView textFieldAtIndex:0] setKeyboardType:UIKeyboardTypeDecimalPad];
[[alertView textFieldAtIndex:0] becomeFirstResponder];
}
I want an alert when the following text fields receive the conditions in second section of code
self.circuit.rcdAtIan = [ICUtils nonNilString:self.rcdAtIan.text];
self.circuit.rcdAt5an = [ICUtils nonNilString:self.rcdAt5an.text];
The above code works fine so now I need to fire it. Using the below method was my first thought but that fires the alert on every keyboard resignation. I only want the alert to display once.
- (void)textFieldDidEndEditing:(UITextField *)textField {
if ([_rcdAtIan.text intValue]> 200) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Warning" message:#"my message" delegate:nil cancelButtonTitle: #"Ok" otherButtonTitles: nil];
[alert show];
}
if ([_rcdAt5an.text intValue]> 40) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Warning" message:#"my message" delegate:nil cancelButtonTitle: #"Ok" otherButtonTitles: nil];
[alert show];
}
}
Im thinking maybe I need a bool with NSUserDefaults perhaps? but not sure how to implement that to check if the alert has been shown. Normally if I wanted an alert shown once I would do
if (![#"1" isEqualToString:[[NSUserDefaults standardUserDefaults] objectForKey:#"alert"]]){
[[NSUserDefaults standardUserDefaults] setValue:#"1" forKey:#"alert"];
[[NSUserDefaults standardUserDefaults] synchronize];
[alert show];
}
However in this instance, when the page is reloaded I want the alerts to be shown again and in any case im not sure if thats an efficient way to solve this
Don't use NSUserDefaults, that would be inappropriate
in your #interface...
#property (assign) BOOL freshAlert1;
#property (assign) BOOL freshAlert2;
then something like this... (assuming 'page is reloaded' equates to your viewController coming back onscreen)
- (void)viewDidAppear
{
self.freshAlert1 = YES;
self.freshAlert2 = YES;
}
if (([_rcdAtIan.text intValue]> 200) && self.freshAlert1) {
self.freshAlert1 = NO;
...
}
if (([_rcdAt5an.text intValue]> 40) && self.freshAlert2) {
self.freshAlert2 = NO;
...
}
What exactly do you mean by "once"? Once per app run, once per editing step?
Or maybe simply add two BOOL flags that you can reset whenever you want and simply to
- (void)textFieldDidEndEditing:(UITextField *)textField {
if ([_rcdAtIan.text intValue]> 200 && !alert1shown) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Warning" message:#"my message" delegate:nil cancelButtonTitle: #"Ok" otherButtonTitles: nil];
alert1shown = YES;
[alert show];
}
if ([_rcdAt5an.text intValue]> 40 && !alert2shown) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Warning" message:#"my message" delegate:nil cancelButtonTitle: #"Ok" otherButtonTitles: nil];
alert2shown = YES;
[alert show];
}
}