I'm using logos for iPhone (MobileSubstrate addons), with a .h file for my
#interface MyClass : NSObject <UIAlertViewDelegate>
and the
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if(buttonIndex == 0) {
is in the .m, but nothing is working, when tapping the buttons on the alert, it doesn't invoke what I have set for each buttonIndex.
Thanks.
Edit: Here's what I've got;
#import "Tweak.h"
%hook ASApplicationPageHeaderView
- (void)_showPurchaseConfirmation {
UIAlertView *alert = [[UIAlertView alloc] init];
[alert setTitle:#"title"];
[alert setMessage:#"message"];
[alert setDelegate:self];
[alert addButtonWithTitle:#"button 1"];
[alert addButtonWithTitle:#"continue"];
[alert show];
[alert release];
}
- (void)alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) { //also tried (UIAlertView *)alertView
UIAlertView *lol = [[UIAlertView alloc] init];
[lol setTitle:#"button 1"];
[lol setMessage:#"button 1"];
[lol setDelegate:self];
[lol addButtonWithTitle:#"lol"];
[lol show];
[lol release];
} else {
%orig;
}
}
%end
You'll most likely need to register your class as the delegate at some point using something along the lines of:
[yourAlertViewObject setDelegate:self];
As the UIAlertViewDelegate Protocol Reference docs say (emphasis mine):
If you add your own buttons or
customize the behavior of an alert
view, implement a delegate conforming
to this protocol to handle the
corresponding delegate messages. Use
the delegate property of an alert view
to specify one of your application
objects as the delegate.
Define your alert within that class and declare the alert delegate to self hope it start working to you
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Alert View "
"
message:#"Would you like to do something?"
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Button1", #"Button2", nil];
[alert show];
[alert release];
You just need to put %new in front of the alertView delegate:
%new
-(void) alertView:...
Related
I have a class name viewController and it has the following code below and it works fine. However, when I call check from my subclass controller it doesn't work the way I want it to.The UIAlertView shows up, but it isn't able to detect when button index 0 is touched.Any workaround for this.
-(void)check{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"You Lose!"
message:#"Play Again?"
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:#"OK", nil];
[alert show];
}
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) { // and they clicked OK.
ViewController*myNewVC = [[ViewController alloc] init];
[self presentModalViewController:myNewVC animated:NO];
}
}
Add UIAlertViewDelegate in your subclass .h file like bellow..
#interface yourSubClassViewController :UIViewController <UIAlertViewDelegate>{
/// your code
}
#end
The Cancel button will be the index "0", Try for index==1.
Use this method:
-(void)check{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"You Lose!"
message:#"Play Again?"
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:#"PopUp", nil];
[alert show];
}
- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0) {
NSLog("Cancel Button clicked);
}
else if (buttonIndex == 1) {
ViewController*myNewVC = [[ViewController alloc] init];
[self presentModalViewController:myNewVC animated:NO];
}
Don't use cancel button. Use two buttons otherButtonTitles and use the buttons index == 1 and button index == 2 . That may help.
You need to set the delegate to your subclass.
-(void)check:(id)delegate{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"You Lose!"
message:#"Play Again?"
delegate:delegate
cancelButtonTitle:#"OK"
otherButtonTitles:#"OK", nil];
[alert show];
}
and you call it [self check:self];
This piece of code which is supposed to show an alert window with a text input:
self.alert = [[UIAlertView alloc] initWithTitle:#"Hello" message:#"How are you?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"OK", nil];
self.alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[self.alert show];
Causes this error:
Thread 7: Program received signal: "EXC_BAD_ACCESS"
This is how self.alert is defined:
#interface MyClass : NSObject
{
UIAlertView *alert;
id <MyClassDelegate> __unsafe_unretained delegate;
}
#property (nonatomic, retain) UIAlertView *alert;
#property (unsafe_unretained) id <MyClassDelegate> delegate;
The problem is maybe because of the customize.
I do not know why, but appear to me that the problem is because of the use of threads + customize of your alert.
Can you try to show this alert on the main thread? What happen?
You probably get an error in this line:
self.alert.alertViewStyle = UIAlertViewStylePlainTextInput;
What you need to do if yes, is perform this in the main thread.
- (void) yourMethod{
[self performSelectorOnMainThread:#selector(yourMethod2) withObject:nil waitUntilDone:NO];
}
- (void) yourMethod2{
self.alert = [[UIAlertView alloc] initWithTitle:#"Hello" message:#"How are you?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"OK", nil];
self.alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[self.alert show];
}
Sorry to can't help you more than that, but I do not know exactly what happen, but I already read about issues when editing things to show, in other threads.
Hope it help you!
The EXC_BAD_ACCESS is caused by accessing a released object. To avoid this make your call to UIAlertView kind of modal:
Function body:
-(void)checkSaving
{
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"Do you want to add these results to your database?"
message:#"\n\n"
delegate:self
cancelButtonTitle:#"No"
otherButtonTitles:#"Save", nil];
alert.alertViewStyle = UIAlertViewStyleDefault;
[alert show];
//this prevent the ARC to clean up :
NSRunLoop *rl = [NSRunLoop currentRunLoop];
NSDate *d;
d= (NSDate*)[d init];
while ([alert isVisible])
{
[rl runUntilDate:d];
}
}
Your choice result:
- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
// the user clicked one of the OK/Cancel buttons
if (buttonIndex == 1)//Save
{
//do something
}
if (buttonIndex == 0)//NO
{
//do something
}
}
Register the functions in the interface declaration:
#interface yourViewController ()
-(void)checkSaving
- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
//...
#end
To call:
[self checkSaving];
I wish this will help you.
Hi here i developing small application. In a subclass screen i have two buttons. When i press the first button, it will shows four actionsheet. When i press second button it wil shows five actionsheet. I was successfully shows it. But i cant set second button actions of five actionsheet. In my code the when i press second button of first actionsheet, it wil actioned first button of first actionsheet. Here i want set actions for individual actionsheets. Pls help me. Here is my code is
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if ( indexPath.row == 0)
{
UIActionSheet *popupQuery = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:#"Cancel" destructiveButtonTitle:#"Edit" otherButtonTitles:#"Remove", #"Sell",#"Scrap", nil];
popupQuery.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
[popupQuery showInView:self.view];
[popupQuery release];
}
if ( indexPath.row == 1 )
{
UIActionSheet *popupQuery = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:#"Cancel" destructiveButtonTitle:#"Unsell" otherButtonTitles:#"Edit Item", #"Edit Sale",#"Sold",#"Scrap", nil];
popupQuery.tag=5;
popupQuery.actionSheetStyle = UIActionSheetStyleBlackOpaque;
[popupQuery showInView:self.view];
[popupQuery release];
}
}
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0)
{
Updateasset *object=[[Updateasset alloc]initWithNibName:#"Updateasset" bundle:nil];
[self presentModalViewController:object animated:NO];
[object release];
}
else if (buttonIndex == 1)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Remove" message:#"Do you want to Remove"
delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
}
else if (buttonIndex == 2)
{
Egarageselling *object=[[Egarageselling alloc]initWithNibName:#"Egarageselling" bundle:nil];
[self presentModalViewController:object animated:YES];
[object release];
}
else if (buttonIndex == 3)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Scrap" message:#"Do you want to Scrap"
delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
}
else if (buttonIndex == 4)
{
}
else if (buttonIndex == 5)
{
}
else if (buttonIndex == 6)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Scrap" message:#"Do you want to Scrap"
delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
}
else if (buttonIndex == 7)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Scrap" message:#"Do you want to Scrap"
delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
}
else if (buttonIndex == 8)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Scrap" message:#"Do you want to Scrap"
delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
}
else if (buttonIndex == 9)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Scrap" message:#"Do you want to Scrap"
delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes", nil];
[alert show];
[alert release];
}
}
How to solve this problem.
Set different tags for two actionsheets like
popupQuery.tag=5;
popupQuery.tag=6;
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(actionSheet.tag==5)
{
if (buttonIndex == 0)
{
}
so on
}
if(actionSheet.tag==6)
{
if (buttonIndex == 0)
{
}
so on
}
}
I might just add, that in a situation like this I would say that best practice is to make your actionsheet to public or private instance variables. It would look like this in your header file (for public):
#property (nonatomic, retain) UIActionSheet *as1;
#property (nonatomic, retain) UIActionSheet *as2;
In your implementation file you synthesize them, like this:
#synthesize as1, as2;
Then remember to set them from where you now allocate your popupQuery's today:
...
self.as1 = popupQuery;
...
...
self.as2 = popupQuery;
...
And in your delegate method you can now do it like this (which I also find more readable if I should ever present the code for another developer):
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(self.as1 == actionSheet) {
if (buttonIndex == 0) { ... }
...
}
if(self.as2 == actionSheet) {
if (buttonIndex == 0) { ... }
...
}
}
I hope you find it useful in this and many other cases. I myself, do it like that, all the time. No harm in having a public or private reference for that matter to you objects. You never know when they might come in handy.
I'm trying to get text from an alert view and add it to my mutable array to list in a table view. I realize there is a similar question that was posted a few months ago, but I dont understand how to utilize the given answer.
-(IBAction)insert {
UIAlertView* dialog = [[UIAlertView alloc] init];
[dialog setDelegate:self];
[dialog setTitle:#"Enter Name"];
[dialog setMessage:#" "];
[dialog addButtonWithTitle:#"Cancel"];
[dialog addButtonWithTitle:#"OK"];
UITextField *nameField = [[UITextField alloc] initWithFrame:CGRectMake(20.0, 45.0, 245.0, 25.0)];
[nameField setBackgroundColor:[UIColor whiteColor]];
[dialog addSubview:nameField];
[dialog show];
[data addObject:[nameField text]];
[mainTableView reloadData];
However my app crashes because it says I'm attempting to insert a nil object at index 0. What am I doing wrong?
EDIT: Ok I think I'm missing a method to handle the alertview. So I found this:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
NSString *buttonTitle=[alertView buttonTitleAtIndex:buttonIndex];
if([buttonTitle isEqualToString:#"Cancel"]) {
return;
}
else if([buttonTitle isEqualToString:#"Ok"]) {
[data addObject:nameField.text];
}
Now I just need to connect the pieces, but not sure how.
A common mistake that people make when using a UIAlertView is that they think that sending it a show message will block the main thread. It does not. Your code continues to execute, even though there is an alert on the screen. Thus, no value exists for the UITextField that you have passed in.
What you need to do is implement the UIAlertViewDelegate in your UIViewController to grab whatever a user has entered into the text field. That said, you still have to check for a nil value, because if you don't type anything in, the text value will be nil.
UPDATE: This answer was posted before Apple created an API for adding a UITextField to an alert through the UIAlertViewStyle. Here is the updated code, borrowed from #matt
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Enter Name"
message:#" "
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"OK", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];
Then, in the UIAlertViewDelegate call back:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {
NSString *name = [alertView textFieldAtIndex:0].text;
// Insert whatever needs to be done with "name"
}
}
You don't need to add your own text field to the AlertView but instead set the appropriate style
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Enter Name"
message:#" "
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"OK", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];
Then access the entered text after OK (button 1) was pressed
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 1) {
NSString *name = [alertView textFieldAtIndex:0].text;
// name contains the entered value
}
}
Don't try to add a UITextView on a UIAlertView or else Apple might reject your app.
I already used the same kind of functionality in my app. But Apple REJECTED MY APP due to the use of UITextView in UIAlertView.
– alertView:clickedButtonAtIndex: is a delegate method of UIAlertView. Just add the method you defined in your edit to your controller implementation and you should be good to go, since you already set the controller to be the AlertView's delegate.
Also add to your class header, to avoid any delegate related warnings, ie:
#interface MyViewController : UIViewController <UIAlertViewDelegate> {
...
};
Don't forget to remove [data addObject:[nameField text]]; and [mainTableView reloadData]; from the insert method.
UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:#"Alert title"
message:#"alert message"
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Ok", nil];
[myAlert addTextFieldWithValue:nil label:#"<place holder>"];
[[myAlert textField] setTextAlignment:UITextAlignmentCenter];
[[myAlert textField] becomeFirstResponder];
[myAlert show];
[myAlert release];
myAlert = nil;
No need to add a custom textfield. You can directly add using addTextFieldWithValue method.
I am trying to act upon whichever button is pressed on an alert. I have the following code and the first alert pop's up but it never gets to the second one.
I have set it up so that the UIAlertViewProtocol is defined in the header too.
-(void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if(buttonIndex != [actionSheet cancelButtonIndex])
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Something actually happened" message:#"Something was done" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:#"test",nil];
[alert show];
}
}
-(void)alert:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex ==0)
{
NSLog(#"tetetete");
UIAlertView *a = [[UIAlertView alloc] initWithTitle:#"test" message:#"test" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[a show];
[a release];
[alert release];
}
}
The simplest explanation is that the delegate is not set properly. Set the debugger to
if(buttonIndex ==0) to make sure the delegate method is being called. Alternatively, the button index might not be zero so the second alert is never created. The debugger can check that as well.
You should move the line...
[alert release];
... to the first method.
I've never tried to daisy chain alerts like this. It's theoretically possible that since alerts are modal and attached to the window and not the top view, that you can't add a second alert until the first one has been completely removed from the window. If the window merely releases the alert it might persist in a property of the window if the originating object has not yet released it. Having the view retained until after the second view is shown might cause a collision of some sort in the window object.
I have modified your code check it
-(void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if(buttonIndex != [actionSheet cancelButtonIndex])
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Something actually happened" message:#"Something was done" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:#"test",nil];
[alert show];
[alert release];
}
}
-(void)alert:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex ==0)
{
NSLog(#"tetetete");
UIAlertView *a = [[UIAlertView alloc] initWithTitle:#"test" message:#"test" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[a show];
[a release];
[a release];
}
}