In my picker view i have a "Custom" option which should popup a UIAlertView for the user to enter a new value, the value is saved in the plist source of the picker for future reference. xxxEditingDidBegin is being called repeatedly (never ending).
I presume its because my UIAlertView is triggering the picker to close.
How should I have done this?
- (IBAction)serviceTypeFieldEditingDidEnd:(UITextField *)sender
{
UIPickerView *picker = [sender.inputView.subviews objectAtIndex:0];
NSString *selText = [serviceTypeArray objectAtIndex: [picker selectedRowInComponent:0]];
sender.text = selText;
if (NSOrderedSame==[selText compare:#"Custom"])
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Custom Role"
message:#"Enter Role Title"
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Ok", nil];
alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
[alertView show];
}
}
Implement method like
- (IBAction)doSelectDate:(UIDatePicker *)sender
{
UIAlertView *alert=[[UIAlertView alloc]initWithTitle:#"Hi" message:#"AlertView is shwoing" delegate:nil cancelButtonTitle:#"Dismiss" otherButtonTitles:nil, nil];
[alert show];
[alert release];
}
and connect above method with ValueChanged Event of UIPickerView;
I fixed it like this
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row
inComponent:(NSInteger)component
{
NSString *rowString = [serviceTypeArray objectAtIndex:row];
if ([rowString compare:#"Custom"] == NSOrderedSame)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Custom Role"
message:#"Enter Role Title"
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Ok", nil];
alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
[alertView show];
}
else
{
_serviceType.text = rowString;
}
}
Related
How can I add an alert that displays instructions before game starts:
See code below:
- (void)viewDidLoad
{
[super viewDidLoad];
if (questions && configDictionary) {
[questionLabel setText:[[questions objectAtIndex:currentQuestonIndex] objectForKey:#"question"]];
NSArray *answers = [[questions objectAtIndex:currentQuestonIndex] objectForKey:#"answers"];
[answerLabel0 setText:[answers objectAtIndex:0]];
[answerLabel1 setText:[answers objectAtIndex:1]];
[answerLabel2 setText:[answers objectAtIndex:2]];
[answerLabel3 setText:[answers objectAtIndex:3]];
[pointsPerAnswerLabel setText:[NSString stringWithFormat:#"+%d points", [[configDictionary objectForKey:kPointsPerCorrectAnswer] intValue]]];
[currentQuestionNumberLabel setText:[NSString stringWithFormat:#"question %d", currentQuestonIndex+1]];
}
}
Use a UIAlertView:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Instructions"
message:#"Your Instructions..." delegate:self cancelButtonTitle:#"Dismiss"
otherButtonTitles:nil, nil];
[alert show];
If you want to alert the user every time the app launches place it in the
- (void)applicationDidFinishLaunching:(UIApplication *)application {
}
Edit
You said you wanted to start the game after the dismiss button is pressed. So take advantage of the UIAlertView delegate:
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0){
//Start your game!
}
}
UIAlertView *message = [[UIAlertView alloc] initWithTitle:#"How to play"
message:#"Answer the questions correctly to get points blablabla..."
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[message show];
I am new to iOS.
I am working on alertviews. Here is my code. Here there are 2 alertviews: successfulallert and unsuccessfulallert for login page. I am using alertview delegate also here, it will work for both alertviews but I want to work only for successful alertview and navigation should be done only for successful alertview. If anybody knows this please help me.
NSString *responseOfResult = [[NSString alloc]initWithString:[result response]];
NSRange match;
// NSLog(#"string= %#", str);
match = [responseOfResult rangeOfString: #"successful"];
if(match.location == NSNotFound)
{
UIAlertView *unsuccessfulAllert = [[UIAlertView alloc]
initWithTitle:#"Alert"
message:responseOfResult
delegate:self
cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[unsuccessfulAllert show];
}
else {
UIAlertView *successfulAllert = [[UIAlertView alloc]
initWithTitle:#"Message" message:#"Login successful." delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[successfulAllert show];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(buttonIndex == 0){
[[self navigationController]pushViewController:registerUserScreen animated:YES];
}
}
Why don't you put "OK" as cancelButtonTitle? Everything will be handled automatically.
UIAlertView *successfulAllert = [[UIAlertView alloc]
initWithTitle:#"Message" message:#"Login successful." delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[successfulAllert show];
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(buttonIndex == 0){
//POP here with this:
[self.navigationController pushViewController:addItemView animated:NO];
}
}
NSString *responseOfResult = [[NSString alloc]initWithString:[result response]];
NSRange match;
// NSLog(#"string= %#", str);
match = [responseOfResult rangeOfString: #"successful"];
if(match.location == NSNotFound)
{
UIAlertView *unsuccessfulAllert = [[UIAlertView alloc]
initWithTitle:#"Alert"
message:responseOfResult
delegate:self
cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[unsuccessfulAllert setTag:1];
[unsuccessfulAllert show];
}
else {
UIAlertView *successfulAllert = [[UIAlertView alloc]
initWithTitle:#"Message" message:#"Login successful." delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[successfulAllert setTag:2];
[successfulAllert show];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(alertView.tag == 2)
{
[[self navigationController]pushViewController:registerUserScreen animated:YES];
}
else
{
//[[self navigationController]pushViewController:registerUserScreen animated:NO];
// OR
return;
}
}
You have many ways to correct your code, the first and very common is to use the tag property (integer) of the UIView. Since UIAlertview inherits from UIView, it has the tag property, so each time you want create an alert (or a view), set the tag and the check your condition like:
...
alert.tag=1;
[alert show];
then to know wich alert is calling the callback:
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(alertView.tag==theTagOfYourAlert){
//do your stuff
}
}
another way, in your case, could be:
if([alertView.title isEqualToString:#"Alert"]){
//do your stuff
}
}
Add tag to the two alert views and check for tag in alert view delegate.
Sample code:
NSString *responseOfResult = [[NSString alloc]initWithString:[result response]];
NSRange match;
// NSLog(#"string= %#", str);
match = [responseOfResult rangeOfString: #"successful"];
if(match.location == NSNotFound)
{
UIAlertView *unsuccessfulAllert = [[UIAlertView alloc]
initWithTitle:#"Alert"
message:responseOfResult
delegate:self
cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[unsuccessfulAllert setTag:1];
[unsuccessfulAllert show];
}
else {
UIAlertView *successfulAllert = [[UIAlertView alloc]
initWithTitle:#"Message" message:#"Login successful." delegate:self cancelButtonTitle:nil otherButtonTitles:#"OK", nil];
[successfulAllert setTag:2];
[successfulAllert show];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(alertView.tag==2 && buttonIndex == 0){
[[self navigationController]pushViewController:registerUserScreen animated:YES];
}
Yes the delegate would work for both the alertviews but you can assign a tag to each alertview Object and check for the tag in the delegate and then perform event if the tag for that particular AlertView onject matches.If u need code , i will provide.
For things like Login status updates, you might want to have the "Login Successful" message disappear automatically. Try this instead:
https://github.com/camclendenin/flashbox
This works nicely and comes in handy for situations like this. Plus you don't have to deal with all the clutter involved with UIAlertViews.
In my app i have reset button which delete all the data of tables and database.but before deleting i have to put alert view and ask the question as follows:
- (IBAction)resetData:(id)sender
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Bills Data Entry"
message:#"Are you sure want to reset data?" delegate:nil
cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 1) {
[self databaseOpen];
NSString *deleteData=[NSString stringWithFormat:#"delete from tbl_Bills"];
[database executeQuery:deleteData];
NSLog(#"inert query: %#",deleteData);
NSLog(#"records deleted");
[table reloadData];
[database close];
// DO STUFF
}
}
This method is not called when i click on yes.
UIAlertView's delegate must not be nil if you want to invoke its delegate method.
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Bills Data Entry"
message:#"Are you sure want to reset data?" delegate:self
cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
UIAlertView delegate must be set to self if you want to invoke its delegate method.
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Bills Data Entry"
message:#"Are you sure want to reset data?"
delegate:self
cancelButtonTitle:#"No"
otherButtonTitles:#"Yes",nil];
When you are using Delegate method you are supposed to set "delegate: self" instead of nil.
UIAlertView *my_Alert = [[UIAlert alloc] initWithTitle:#"Title of Alert" message:#"Your
Message" delegate:self cancelButtonTitle:#"OK",
otherButtonTitles:nil,nil];
In delegate method ofUIalerview I am trying to show another alert after finishing the process on clicking button index. Is it possible to do so? Also I want to call a method on button click of alert. How can I do that?
I am trying in this way. Is is correct?
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex == 1)
{
inappPurchaseViewController = [[InAppPurchaseViewController alloc] init];
[inappPurchaseViewController Upgrade:nil];
[inappPurchaseViewController release];
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[purchasedone show];
[purchasedone release];
}
}
You want to use tags for your UIAlertViews
Assigning tags
UIAlertView *firstAlert = [[UIAlertView alloc] initWithTitle:#"Do something first" message:#"This is the first UIAlertView" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[firstAlert setTag: 0];
[firstAlert show];
[firstAlert release];
Handling those tags
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
switch (alertView.tag)
{
case 0: /* firstAlert */
{
if(buttonIndex == 1)
{
inappPurchaseViewController = [[InAppPurchaseViewController alloc] init];
[inappPurchaseViewController Upgrade:nil];
[inappPurchaseViewController release];
UIAlertView *purchaseDone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[purchaseDone setTag: 1];
[purchaseDone show];
[purchaseDone release];
}
}
break;
case 1: /* purchaseDone */
{
/* purchaseDone uialertview was triggered, handle it here. */
}
break;
}
}
UIAlertView *a = [[UIAlertView alloc] initWithTitle:#"a" message:#"b" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:#"ca",nil];
[a show];
[a release];
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if(buttonIndex == 1)
{
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
purchasedone.tag = 55;
[purchasedone show];
[purchasedone release];
}
if([alertView tag] == 55 && buttonIndex == 0)
{
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"New Alert" message:#"New Alert Message" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[purchasedone show];
[purchasedone release];
}
}
write UIAlertViewDelegate in .h file.
put the following line on top of your .m file
`#define PREVIOUS_ALERT 101`
`#define NEW_ALERT 102`
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
//you need to make a condition here for checking the alert else it will go into infinite loom of showing alert after alert
//you can do it by setting tag to alert something like this
if(alertView.tag == PREVIOUS_ALERT) //sot the previous alert tag to this where you created it
{
if(buttonIndex == 1)
{
inappPurchaseViewController = [[InAppPurchaseViewController alloc] init];
[inappPurchaseViewController Upgrade:nil];
[inappPurchaseViewController release];
UIAlertView *purchasedone = [[UIAlertView alloc] initWithTitle:#"Enable Ads" message:#"You can Enable Ads from Settings Option" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
purchasedone.tag = NEW_ALERT;
[purchasedone show];
[purchasedone release];
}
}
else
{
//code for your second alert
}
}
my app needs alert msg and if yes button pressed then one more alert msg and then i have to called a method.This is my code:
-(IBAction)resetPressed:(id)sender
{
NSString *title= [NSString stringWithFormat:#"Warning"];
NSString *message = [NSString stringWithFormat:#"Are you sure you want to Reset"];
NSString *ok = [NSString stringWithFormat:#"No"];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:ok otherButtonTitles:#"Yes",nil];
[alert show];
[alert release];
}
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (alertView.tag ==1)
{
NSString *title= [NSString stringWithFormat:#"Warning"];
NSString *message = [NSString stringWithFormat:#"Are you sure you want to Reset"];
NSString *ok = [NSString stringWithFormat:#"No"];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:ok otherButtonTitles:#"Yes",nil];
alert.tag =2;
[alert show];
[alert release];
}
else if(alertView.tag ==2)
{
[self resetArray];
}
}
Thanks.
I'm not sure what your goal is but a few things look wrong to me anyways:
First of all you should create your strings this way:
NSString *title= #"Warning";
There's no need to use stringWithFormat in your case.
Then, it doesn't seem you properly set the first UIAlert's tag to 1, and the default value for tags is 0 so I guess the if statements in didDismissWithButtonIndex are never true.
Also, you should check which button was pressed using buttonIndex, otherwise you are going to show both alert and call [self resetArray] whichever button is pressed by the user.
Hope that helps.
In your code, you create the first alert, but never actually set the tag on it. You should do:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:ok otherButtonTitles:#"Yes",nil];
alert.tag = 1; //Or 2, or something.
[alert show];
[alert release];
Then the code in your delegate method will run.
Please define two separate UIAlertView in .h file
#interface XYZViewController:UIViewController
{
UIAlertView *firstAlertView;
UIAlertView *secondAlertView;
}
Now in your .m file modify as below:
-(IBAction)resetPressed:(id)sender
{
NSString *title= [NSString stringWithFormat:#"Warning"];
NSString *message = [NSString stringWithFormat:#"Are you sure you want to Reset"];
NSString *ok = [NSString stringWithFormat:#"No"];
if(firstAlertView == nil)
{
firstAlertView = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:ok otherButtonTitles:#"Yes",nil];
}
[firstAlertView show];
}
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if (alertView == firstAlertView)
{
NSString *title= [NSString stringWithFormat:#"Warning"];
NSString *message = [NSString stringWithFormat:#"Are you sure you want to Reset"];
NSString *ok = [NSString stringWithFormat:#"No"];
if(secondAlertView == nil)
{
secondAlertView = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:ok otherButtonTitles:#"Yes",nil];
}
[secondAlertView show];
}
else if(alertView == secondAlertView)
{
[self resetArray];
}
}
and in dealloc method please release the allocated UIAlertviews.
Hope i am clear to you.
Thanks,
Jim.