What's the method that gets called when the user press the end call button while making a phone call and how to use it in my app?
Thank you
Your app cannot end user's phone calls for them, just as it can't make phone calls.
If there were a method it would be part of CTCall. There isn't one.
You can make calls from within an app:
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:#"telprompt://<number>"]]) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"telprompt://<number>"]];
} else {
UIAlertView *av = [[UIAlertView alloc] initWithTitle:#"No Phone" message:#"" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[av show];
}
or
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:#"tel://<number>"]]) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"tel://<number>"]];
} else {
UIAlertView *av = [[UIAlertView alloc] initWithTitle:#"No Phone" message:#"" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[av show];
}
The first version will return you to your app and execute your callback function, the second won't. The first version will prompt you with an alert box to make the call, the second won't.
Related
I'm trying to open the app "Calculator" but I don't know the Scheme
- (IBAction)btnColetorClick:(id)sender
{
NSString *customURL = #"calculator://";
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:customURL]])
{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:customURL]];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"URL error"
message:[NSString stringWithFormat:#"No custom URL defined for %#", customURL]
delegate:self
cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[alert show];
}
}
It seems that there is no scheme for the native calculator.
Related:
api for showing native calculator in iOS app
Launch an app from within another (iPhone)
You can try "calc://"
it works on iOS13
I have the following code:
NSString *customURL = #"photo://";
NSURL *url = [NSURL URLWithString:customURL];
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:customURL]])
{
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:customURL]];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"URL error"
message:[NSString stringWithFormat:#"No custom URL defined for %#", customURL]
delegate:self cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[alert show];
}
Which is trying to open iPhoto app by using the custom URL. But the code returns error message and iPhoto is not launched. Any idea why this is?
Thank you for your help.
photo:// doesn't seem to be a supported url.
https://developer.apple.com/library/ios/featuredarticles/iPhoneURLScheme_Reference/Introduction/Introduction.html#//apple_ref/doc/uid/TP40007899-CH1-SW1
Im trying to put in a rate App alert, but its not opening properly, in fact when I click the Yes button it dosnt open the url at all, How do I make it work?
Below is the call in the viewdidload:
The below code in viewdidload is also in app delegate
[super viewDidLoad];
//rate app
NSUserDefaults *prefsr = [NSUserDefaults standardUserDefaults];
NSInteger launchCount = [prefsr integerForKey:#"launchCount"];
if (launchCount >= 1) {
UIAlertView *alertRate = [[UIAlertView alloc] initWithTitle:#"Like this app?" message:#"Rate on the app store." delegate:nil cancelButtonTitle:#"No, thanks" otherButtonTitles:#"Yes",#"Remind me later", nil];
[alertRate show];
}
-(void)alertViewRate:(UIAlertView *)alertViewRate clickedButtonAtIndex:(NSInteger)buttonIndexP{
if (buttonIndexP == 2) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"https://www.google.com"]];
}
else if (buttonIndexP == 1){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"https://www.google.com"]];
}
Add the delegate Self while creating the UIAlertView
UIAlertView *alertRate = [[UIAlertView alloc] initWithTitle:#"Like this app?" message:#"Rate on the app store." delegate:self cancelButtonTitle:#"No, thanks" otherButtonTitles:#"Yes",#"Remind me later", nil];
[alertRate show];
Delegate method for UIAlertView also need to be chnaged
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 2) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"https://www.google.com"]];
}
else if (buttonIndex == 1){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"https://www.google.com"]];
}
}
You haven't set the delegate to self while you are creating UIAlertView object. So -(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex method is not getting called when you click on buttons in the AlertView.
Change your code From
UIAlertView *alertRate = [[UIAlertView alloc] initWithTitle:#"Like this app?" message:#"Rate on the app store." delegate:nil cancelButtonTitle:#"No, thanks" otherButtonTitles:#"Yes",#"Remind me later", nil];
To
UIAlertView *alertRate = [[UIAlertView alloc] initWithTitle:#"Like this app?" message:#"Rate on the app store." delegate:self. cancelButtonTitle:#"No, thanks" otherButtonTitles:#"Yes",#"Remind me later", nil];
I have a problem about order of executing methods.
if (indexPath.row == 2) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil
message:#"Data will be downloaded"
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
if([app getData]){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil
message:#"Data is downloaded."
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
}
When I run this code snippet, I want to first show an alert view. However, it calls the getData method before showing alert view. Once the getData method is completed, alertView comes to the window.
How can I correct this?
The function is called asynchronously therefore appData gets called before the first alert view is visible. Change your code to this:
if (indexPath.row == 2) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil
message:#"Data will be downloaded"
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
The below method will be called when the user presses OK on your first alert, but it means that while the first alert is visible, your code for appData would not start.
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if([app getData]){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil
message:#"Data is downloaded."
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
}
Note: Remember to add UIAlertViewDelegate in your view controller
I don't have Xcode with me, but I'll take a stab at it anyway. Your problem is because the alert won't show until the main loop iterates. And it won't iterate until your getData method is executed since you're doing this on the main thread. So you need to fork.
Try wrapping your if() in something like this:
dispatch_async(dispatch_get_main_queue(),
^ {
if([app getData]){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil
message:#"Data is downloaded."
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
});
It's because the run loop must continue running so [UIAlertView show] is asynchronous and will not block the current thread. If the main thread was blocked then no user interface events could be delivered.
If you want something to occur after the first alert view is dismissed then do it within the alertView:clickedButtonAtIndex: delegate method.
A button from the first alert executes the second alert which is basically a confirmation to call someone. I don't get any errors but it doesn't work.
When I press on the second alert the Call button it crashes
-(void) alertView: (UIAlertView *) alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *buttonString = [alertView buttonTitleAtIndex:buttonIndex];
if ([buttonString isEqualToString:#"Phone"])
{
UIAlertView *alert2 = [[UIAlertView alloc] initWithTitle:#"Notice!" message:#"You are about to call .... Do you wish to continue?" delegate:nil cancelButtonTitle:#"Cancel" otherButtonTitles:#"Call", nil];
[alert2 show];
if ([buttonString isEqualToString:#"Call"]){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:#"tel://12345678"]]];
}
if([buttonString isEqualToString:#"Website"]){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"website"]];
}
if ([buttonString isEqualToString:#"Facebook"]){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"http://www.facebook.com/groups/..../"]];
}
}
}
You assigned to delegate as a nil in second alertview. That's why the alertView:clickedButtonAtIndex: delegate method is not called in second time. So you should assign to delegate as a self.
-(void) alertView: (UIAlertView *) alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
NSString *buttonString = [alertView buttonTitleAtIndex:buttonIndex];
if([buttonString isEqualToString:#"Phone"]) {
UIAlertView *alert2 = [[UIAlertView alloc] initWithTitle:#"Notice!" message:#"You are about to call .... Do you wish to continue?" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Call", nil];
[alert2 show];
}
if([buttonString isEqualToString:#"Call"]){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:#"tel://12345678"]]];
}
if([buttonString isEqualToString:#"Website"]){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"website"]];
}
if([buttonString isEqualToString:#"Facebook"]){
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"http://www.facebook.com/groups/..../"]];
}
}
I think it will be helpful to you.
Launch the second alert with a delay. Problem is - alert needs some time to hide itself, before any new alerts can appear, thus directly calling second one will not work.
try this for example:
- (void) alertView: (UIAlertView *) alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
NSString *buttonString = [alertView buttonTitleAtIndex:buttonIndex];
if ([buttonString isEqualToString:#"Phone"])
{
[self performSelector:#selector(callSecondAlertView) withObject:nil afterDelay:1];
}
}
- (void)callSecondAlertView
{
//show new alert view
UIAlertView *alert2 = [[UIAlertView alloc] initWithTitle:#"Notice!" message:#"You are about to call .... Do you wish to continue?" delegate:nil cancelButtonTitle:#"Cancel" otherButtonTitles:#"Call", nil];
[alert2 show];
[alert2 release];
}
If not working, or too long delay - play with afterDelay: value.
got it! for some reason the [[[alertView subviews] objectAtIndex:6] setBackgroundColor... for the fisrt alertView buttons i had interferes with the second alertView functionality. xcode though did not direct me directly to the problem until i updated xcode to 4.4.1
Use the alertView:didDismissWithButtonIndex: delegate method instead of the alertView:clickedButtonAtIndex: delegate method. The former is called after the alert is gone. This make more sense when you want to show a second based on the tapped button of the first alert view.
Also give tag to UIAlertview objects.