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Closed 10 years ago.
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Create an alert on any view controller after Facebook request:didFailWithError:
I have a method that gets called if a video upload to Facebook has failed. If that method is called then I would like for a UIAlertView to appear in any view controller that a user happens to be on at the time the upload fails.
Is this possible?
UIAlertView creates it's own UIWindow above your application's main window and makes it key and visible. Any UIAlertView created by your application should be visible on any view controller in your application's main window.
-(void)yourMethod{
UIAlertView *alert = [[UIAlertView alloc] init];
[alert setTitle:#"Failed to upload video"];
[alert setMessage:#"bla bla bla"];
[alert setDelegate:self];
[alert addButtonWithTitle:#"Ok"];
[alert show];
}
then you can have this method to control what happens after the user clicks a button in your alert:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0 ){
//do something
}else if (buttonIndex == 1){
//if you add more buttons
//do something
}
}
if you have more alert-views, you could add a tag [alert setTag:(int)] to identify them in the -(void)alertView method with [alertView getTag]
Related
I have a very simple process running where after each round of a simple game the scores are calculated, labels updated and all the normal, very simple stuff. I have a UIAlertView that informs the player of how s/he performed. I use a UIAlertViewDelegate to postpone all the updates, resetting of controls etc. till after the UIAlertView is dismissed. The methods are [startNewRound],[startOver] and [updateLabels]. It's fairly obvious what they all do. Anyway, when the user hits round ten, I've made another UIAlertView that informs the player that the game has ended and shows the overall score. Again, I hoped to use a delegate to postpone the resets till after the AlertView is dismissed. The only problem is, with the endGame AlertView, it seems to be using the first AlertView's delegate method causing the game to continue with a new round and not start from the beginning. I hope this makes sense. Anyway, here are snippets of my code.
if (round == 10){
UIAlertView *endGame = [[UIAlertView alloc]
initWithTitle: #"End of Game"
message: endMessage
delegate:self
cancelButtonTitle:#"New Game"
otherButtonTitles:nil];
[endGame show];
}
else {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle: title
message: message
delegate:self
cancelButtonTitle:#"Next"
otherButtonTitles:nil];
[alertView show];
}
And then the delegate methods:
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
[self startNewRound];
[self updateLabels];
}
- (void)endGame:(UIAlertView *)endGame didDismissWithButtonIndex:(NSInteger)buttonIndex
{
[self startOver];
}
So there it is. As I mentioned, the endGame AlertView appears to be using alertView's delegate, thus not activating the [self startOver] method. All the methods are working, it's just the AlertView is using the incorrect delegate method. Regards, Mike
Change your code like this,
if (round == 10){
UIAlertView *endGame = [[UIAlertView alloc]
initWithTitle: #"End of Game"
message: endMessage
delegate:self
cancelButtonTitle:#"New Game"
otherButtonTitles:nil];
endGame.tag = 111;
[endGame show];
}
else {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle: title
message: message
delegate:self
cancelButtonTitle:#"Next"
otherButtonTitles:nil];
alertView.tag = 222;
[alertView show];
}
and delegate method as,
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
if(alertView.tag == 111)
{
[self startNewRound];
[self updateLabels];
}
else if(alertView.tag == 222)
{
[self startOver];
}
}
You cant have two delegate method for dismisswithbuttonindex, you need to handle this situation with tag.
Give both alert view a different tag and check it on delegate object. Thus you can differentiat the both alert view.
I have an Iphone application in which when i am pressing a button it shows an alertview to chose the background.whichever background user is chosing will be played as the background of the audio clips.But now i need to add another alert before i am showing this alert for giving some warning.after that only i need to pop the second one.but i was done that chosing alert in the didappear of that viewcontroller and set it as a Uialertview delegate.and on the button actions i was doing different actions.Can anybody help me on achieving this?
proAlertView *loginav1=[[proAlertView alloc] initWithTitle:#"title" message:#"Choose a Background to play with this program?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Field",#"Beach", #"Stars",nil];
[loginav1 setBackgroundColor:[UIColor colorWithRed:0.129 green:0.129 blue:0.129 alpha:1.0] withStrokeColor:[UIColor colorWithHue:0.625 saturation:0.0 brightness:0.8 alpha:0.8]];
[loginav1 show];
- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
// the user clicked one of the OK/Cancel buttons
if (buttonIndex == 0)
{
//[self play];
//moviePlayer.scalingMode=MPMovieScalingModeAspectFill;
if(actionSheet.tag==123)
{
[self backButtonPressed];
}
}
else if (buttonIndex == 1)
{
videoFile = [[NSBundle mainBundle] pathForResource:#"video-track" ofType:#"mp4"];
[self play];
moviePlayer.scalingMode=MPMovieScalingModeAspectFill;
}
how can i include another alert before this is my question?
Initialize first Alertview
UIAlertView *al1 = [[UIAlertView alloc] initWithTitle:#"Warning!" message:#"Warning Msg!!!" delegate:self cancelButtonTitle:#"Ok" otherButtonTitles: nil];
al1.tag=1;
al1.delegate=self;
[al1 show];
Implement Delegate method
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(alertView.tag==1){
// implement button events for first Alertview
if(buttonIndex==1){
//First button clicked of first Alertview
UIAlertView *al2 = [[UIAlertView alloc] initWithTitle:#"Choose BG" message:#"Choose BG?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"1",#"2",#"3", nil];
al2.tag=2;
al2.delegate=self;
[al2 show];
}
}
if(alertView.tag==2){
// implement button events for second Alertview
if(buttonIndex==1){
// First button clicked second Alertview.
}
}
}
Controller Class header
#interface ViewController : UIViewController<UIAlertViewDelegate>{
}
Hope this will fulfill your need !
You can do like this, first display warning message in alertview and when user click OK in alertview then in alertview delegate method write code to display second alertview where user can choose background.
I want to show nested alertViews. Problem, which i am facing in nested alertViews is that when i click an "add" button of first alertView it shows the second alertView, in second alertView i have a textField and a "Save" button. I want to save data when i click on save button and then reload UITableViewData, which is already in the first alertView.
I am new in iphone, so please help me.
You should create your alert views with different tag property so that in delegate method you can easily differentiate which alert view is appeared on the screen.
For example :
UIAlertView *alert = [[[UIAlertView alloc] initWithTitle:#"Info"
message:#"Message" delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil] autorelease];
[alert setTag: 1001]; // give different tag to different alert views
[alert show];
[alert release];
Now in delegate method :
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (alertView.tag == 1001)
{
// do something
}
eles if (alertView.tag == 1002)
{
}
}
Hope it helps you..
I have a UIAlertView that asks a user whether they want to copy a bunch of contacts. After the user clicks "Continue," I want the AlertView to disappear to be replaced by a UIProgressView that shows the rate of loading.
Everything functions properly except that the alert remains on the XIB after the user clicks Continue, and it doesn't disappear until the entire process has run. As soon as it disappears, the UIProgressView bar appears but by then it has reached 100%.
How do I clear the UIAlertView off the screen immediately and show the progress bar growing instead.
Here's the code. Thanks for help.
-(IBAction)importAllAddressBook:(id)sender {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Import ALL Contacts" message:#"Do you want to import all your Address Book contacts? (Please note that only those with a first and last name will be transfered)" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Continue", nil];
[alert show];
[alert release];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0) {
NSLog(#"NO STOP");
return;
}else {
NSLog(#"YES CONTINUE");
importAllContactsProgress.hidden = NO; // show progress bar at 0
[self importAllMethod];
}
}
// method to import all Address Book
-(void) importAllMethod {
importAllContactsProgress.progress = 0.0;
load names etc etc
You'll want to perform the perform the import on a background thread:
[self performSelectorInBackground:#selector(importAllMethod)];
Your import method is blocking the main thread and preventing any UI actions from occurring.
would you please look at that piece of code:
/* This app is a game, the user can click an "abort" button anytime,
* and he/she is therefore asked for confirmation ("really abort game?")
*/
- (IBAction)btnAbortClicked:(id)sender {
UIAlertView *alert = [[UIAlertView alloc] init];
[alert setMessage:#"Really abort game?"];
[alert setDelegate:self];
[alert addButtonWithTitle:#"Yes"];
[alert addButtonWithTitle:#"No"];
[alert show];
[alert release];
}
/* Delegate method (I don't like it, I wish I had modal blocking windows) */
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 0)
[self quitGame];
}
/* pop the view controller */
- (void)quitGame {
[self.navigationController popToRootViewControllerAnimated:YES];
}
The problem is simple - but apparently not enough for me to solve. The UIViewController gets popped, but doesn't get deallocated. And the problem is strictly related to the UIAlertView, because if I just call quitGame from btnAbortClicked:, the view controller is popped and immediately deallocated.
Instead, it seems some mysterious entity retains it.
Can you help me? Thanks in advance.
Well, I think that you're still inside the alertView when clickedButtonAtIndex is called. I'd suggest moving to alertView:disDismissWithButtonIndex instead, so that you're called after the alertview disappears.