I am sure it's something easy, and I am not looking to the right documentation.
I need to get information about the application that handles the active window. The code I need to write needs to intercept some custom gestures, and return to the application an event that depends from the application itself.
There's the NSWorkspace class from which you can get a dictionary with information about the activeApplication. That application usually owns the "key" window.
Edit: For apps targeting 10.6 or later, activeApplication is deprecated. Here's the new way to go:
NSRunningApplication *activeApplication = nil;
for (NSRunningApplication *app in [[NSWorkspace sharedWorkspace] runningApplications]) {
if (app.active) {
activeApplication = app;
break;
}
}
Method activeApplication is deprecated from MacOS 10.7. Documentation suggests to use NSRunningApplication instead.
Related
"[GCController controllers]" does not contain any controllers that were connected prior to application launch
TLDR;
I am trying to implement gamepad input on macOS using the Game Controller Framework. When invoked in my code, [GameController controllers] always returns an empty list until new controllers are connected. It never reflects gamepads connected to macOS prior to application launch, except if you disconnect them and reconnect them while the app is running. Does anyone know what I need to do to make controllers populate with pre-launch connections?
Full question
Now that Apple has added support for Xbox and Playstation controllers to the GameController framework, I'm trying to use it for gamepad input on a C++ game engine I'm developing. I'm using the framework instead of IOKit in order to "future-proof" my games to support additional controller types in the future, as well as to simplify my own input handling code.
Like many other game engines, I've foregone using NSApplicationMain() and nib files in favor of implementing my own event loop and setting up my game window programmatically. While my "Windows style" event loop appears to be working correctly, I've discovered that [GCController controllers] does not. The array it returns is always empty at launch, and will only ever reflect controllers that are connected while the game is running. Disconnecting a pre-connected controller does not trigger my GCControllerDidDisconnectNotification callback.
Here is a simplified version of my event loop:
int main(int argc, const char * argv[])
{
#autoreleasepool
{
// Create application
[NSApplication sharedApplication];
// Set up custom app delegate
CustomAppDelegate * delegate = [[CustomAppDelegate alloc] init];
[NSApp setDelegate:delegate];
// Activate and launch app
[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
[NSApp setPresentationOptions:NSApplicationPresentationDefault];
[NSApp activateIgnoringOtherApps:YES]; // Strictly speaking, not necessary
[NSApp finishLaunching]; // NSMenu is set up at this point in applicationWillFinishLaunching:.
// Initialize game engine (window is created here)
GenericEngineCode_Init(); // <-- Where I want to call [GCController controllers]
NSEvent *e;
do
{
do
{
// Pump messages
e = [NSApp nextEventMatchingMask: NSEventMaskAny
untilDate: nil
inMode: NSDefaultRunLoopMode
dequeue: YES];
if (e)
{
[NSApp sendEvent: e];
[NSApp updateWindows];
}
} while (e);
} while (GenericEngineCode_Run()); // Steps the engine, returns false when quitting.
GenericEngineCode_Cleanup();
}
return 0;
}
I've confirmed that even when using [NSApp run] instead of [NSApp finishLaunching], the behavior is the same. As best as I can tell, the problem is that there's something NSApplicationMain() does that I'm not doing, but that function is a black box -- I can't identify what I need to do to get controllers to populate correctly. Does anyone know what I'm missing?
The closest thing I could find to an explanation of this problem is this answer, which suggests that my app isn't getting didBecomeActive notifications, or that at the least, the private _GCControllerManager isn't getting a CBApplicationDidBecomeActive message. I'm not a professional macOS developer, though: I don't know if this actually applies to my situation, or how I'd go about correcting the problem if it does.
After a huge amount of time searching, I found the answer on my own. It turns out that my code wasn't the problem -- the problem was that my Info.plist file was having its CFBundleIdentifier value stripped out due to a problem with my build system. It appears that the Game Controller Framework needs the bundle identifier to correctly populate [GCController controllers] at launch. While a missing CFBundleIdentifier would have been a problem anyway, as a Windows person it didn't occur to me that the identifier might be used for things besides the App Store, so I let it slide until now.
If someone else has this problem, make sure that CFBundleIdentifier isn't missing or empty in Info.plist in your assembled app bundle. In my case with Premake, I had to manually set PRODUCT_BUNDLE_IDENTIFIER with xcodebuildsettings so that $(PRODUCT_BUNDLE_IDENTIFIER) would get properly replaced in Info.plist.
One of my app's feature is detect keyDown event and do someting for some specific keys.
So, I use CGEventTapCreate to solve my problem and my code is like this:
if let tap = CGEventTapCreate(.CGHIDEventTap, .HeadInsertEventTap, .Default, CGEventMask(1 << CGEventType.KeyDown.rawValue), callBack, nil) {
let runLoopSource = CFMachPortCreateRunLoopSource(kCFAllocatorDefault, tap, 0)
CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopDefaultMode)
CGEventTapEnable(tap, true)
CFRunLoopRun()
}
Also, I deal with the process trust like:
let options = [kAXTrustedCheckOptionPrompt.takeUnretainedValue() as NSString: false]
let processTrusted = AXIsProcessTrustedWithOptions(options)
if processTrusted {
// do CGEventTapCreate()
} else {
// check again 1s later
performSelector("checkMethod", withObject: nil, afterDelay: 1)
}
It will be called per second until processTrusted is true.
Then strange thing happened:
When I run the app in Xcode and add trust Xcode in Privacy_Accessibility it all work fine. But When I run it with archive the app and Export as a Mac Application to my desktop, CGEventTapCreate() just not work.
After that I found this post Enable access for assistive devices programmatically on 10.9, it notice me that I need to relaunch the app after AXIsTrustedProcess().
You know, it's not a good idea to tell users to relaunch the app themselves. So I try to relaunch it programmatically and add these code into if processTrusted {}:
NSWorkspace.sharedWorkspace().launchApplication(NSProcessInfo.processInfo().processName)
NSApplication.sharedApplication().terminate(nil)
In other words, when I tick the app in Privacy_Accessibility, it will relaunch automatically.
Here comes another strange thing:
The app truly terminate and launch automatically. But when it finish relaunch, the app's Privacy_Accessibility is not tick.
It's really confuse me a lot, I hope someone will tell me the right way to deal with process trust and execute CGEventTapCreate() correctly.
Thanks!
Polling AXIsProcessTrusted and automatically relaunching is a nice touch. Users are often confused by this process, so anything that helps make it easier for them is good.
I'm pretty sure that an application that you launch inherits your current permissions, but don't have references handy to back that up. I have found that when debugging an application with CGEventTaps, I also have to give Xcode the Accessibility permissions that my app requests/requires.
But you can work around this by getting the system to launch your app for you. Try:
[NSTask launchedTaskWithLaunchPath:#"/bin/sh" arguments:[NSArray arrayWithObjects:#"-c", [NSString stringWithFormat:#"sleep 3 ; /usr/bin/open '%#'", [[NSBundle mainBundle] bundlePath]], nil]];
I am seeing that you can launch FaceTime from your app via
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"facetime://tel-number"]];
I am also reading that since there is no officially public FaceTime API apple will reject you.
Does anyone know if this rejection talk is true? PAIR has this feature and they have never been rejected.
This is now documented and legal:
https://developer.apple.com/library/ios/featuredarticles/iPhoneURLScheme_Reference/FacetimeLinks/FacetimeLinks.html#//apple_ref/doc/uid/TP40007899-CH2-SW1
My app got rejected for using FaceTime url. This is the part of response i got from Apple in resolution center.
We found the following non-public API/s in your app: Specifically,
your app uses the FaceTime URL scheme, which is undocumented.
If you have defined methods in your source code with the same names as
the above-mentioned APIs, we suggest altering your method names so
that they no longer collide with Apple's private APIs to avoid your
application being flagged in future submissions.
It was an update of a previous release. The first version got accepted without any problem. Now the update has been rejected due to the above mentioned reason. Seems i have to publish the app without the FaceTime thingy now.
Edit:
Its now legal to use FaceTime url in third party apps.
As a general rule, if you use undocumented API calls and apple catches you, they will reject your application. The reason is because they could change the API call that you are using in new IOS updates and thus would cause your application to crash or not work properly. You can try and submit using the undocumented API and hope that apple lets it through but as i said, you run the risk of Apple changing this api call or removing it completely from the OS in the future.
I don't see any reason this would be rejected, especially if there's already an app that uses this functionality. The App Store Review Guidelines are the best way to determine if your app will be rejected, and I don't see anything in there that applies to you situation.
Of course, Apple can do whatever they want, so the only way to be absolutely sure it will be accepted is to submit it, but I highly doubt you will have a problem.
It is official that you can use Native app URL strings for FaceTime video calls:
facetime:// 14085551234
facetime://user#example.com
Please refer to the link: https://developer.apple.com/library/archive/featuredarticles/iPhoneURLScheme_Reference/FacetimeLinks/FacetimeLinks.html
Though this feature is supported on all devices, you have to change the code a little bit for iOS 10.0 and above as openURL(_:) is deprecated.
https://developer.apple.com/documentation/uikit/uiapplication/1622961-openurl?language=objc
Please refer code below for the current and fallback mechanism, so this way it will not get rejected by Appstore.
-(void) callFaceTime : (NSString *) contactNumber
{
NSURL *URL = [NSURL URLWithString:[NSString
stringWithFormat:#"facetime://%#", contactNumber]];
if (#available(iOS 10.0, *)) {
[[UIApplication sharedApplication] openURL:URL options:#{}
completionHandler:^(BOOL success)
{
if (success)
{
NSLog(#"inside success");
}
else
{
NSLog(#"error");
}
}];
}
else {
// Fallback on earlier versions
NSString *faceTimeUrlScheme = [#"facetime://"
stringByAppendingString:contactNumber];
NSURL *facetimeURL = [NSURL URLWithString:faceTimeUrlScheme];
// Facetime is available or not
if ([[UIApplication sharedApplication] canOpenURL:facetimeURL])
{
[[UIApplication sharedApplication] openURL:facetimeURL];
}
else
{
// Facetime not available
NSLog(#"Facetime not available");
}
}
}
in contactNumber either pass phone number or appleid.
NSString *phoneNumber = #"9999999999";
NSString *appleId = #"abc#gmail.com";
[self callFaceTime:appleId];
objective-c ios
Is there a way (some API) to get the list of installed apps on an iPhone device.
While searching for similar questions, I found some thing related to url registration, but I think there must be some API to do this, as I don't want to do any thing with the app, I just want the list.
No, apps are sandboxed and Apple-accepted APIs do not include anything that would let you do that.
You can, however, test whether a certain app is installed:
if the app is known to handle URLs of a certain type
by using [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:#"thisapp://foo"]
You can get a list of apps and URL schemes from here.
For jailbroken devices you can use next snipped of code:
-(void)appInstalledList
{
static NSString* const path = #"/private/var/mobile/Library/Caches/com.apple.mobile.installation.plist";
NSDictionary *cacheDict = nil;
BOOL isDir = NO;
if ([[NSFileManager defaultManager] fileExistsAtPath: path isDirectory: &isDir] && !isDir)
{
cacheDict = [NSDictionary dictionaryWithContentsOfFile: path];
NSDictionary *system = [cacheDict objectForKey: #"System"]; // First check all system (jailbroken) apps
for (NSString *key in system)
{
NSLog(#"%#",key);
}
NSDictionary *user = [cacheDict objectForKey: #"User"]; // Then all the user (App Store /var/mobile/Applications) apps
for (NSString *key in user)
{
NSLog(#"%#",key);
}
return;
}
NSLog(#"can not find installed app plist");
}
for non jailbroken device, we can use third party framework which is called "ihaspp", also its free and apple accepted. Also they given good documentation how to integrate and how to use. May be this would be helpful to you. Good luck!!
https://github.com/danielamitay/iHasApp
You could do this by using the following:
Class LSApplicationWorkspace_class = objc_getClass("LSApplicationWorkspace");
SEL selector = NSSelectorFromString(#"defaultWorkspace");
NSObject* workspace = [LSApplicationWorkspace_class performSelector:selector];
SEL selectorALL = NSSelectorFromString(#"allApplications");
NSMutableArray *Allapps = [workspace performSelector:selectorALL];
NSLog(#"apps: %#", Allapps);
And then by accessing each element and splitting it you can get your app name, and even the Bundle Identifier, too.
Well, not sure if this was available back when the last answer was given or not (Prior to iOS 6)
Also this one is time intensive, yet simple:
Go into settings > Gen. >usage. The first category under usage at least right now is Storage.
It will show a partial list of apps. At the bottom of this partial list is a button that says "show all apps".
Tap that and you'll have to go through screen by screen, and take screenshots (Quick lock button and home button takes a screenshot).
I'm doing this now and I have hundreds of apps on my iPhone. So it's going to take me a while. But at least at the end of the process I'll have Images of all my apps.
I have a x86_64 app that I would like to have optionally read Skype status messages. However, the 5 year old skype mac framework is 32-bit, and if there is a way to have that compile within a 64-bit app, I haven't found it.
My question is, basically, how should I go about doing this? I really only need to get and set the USERSTATUS AWAY/ONLINE string.
Using AppleScript, a "Should Skype allow this" dialog pops up... every time. This is highly inefficient and downright irritating.
Advice?
I'm considering writing a 32-bit CLI wrapper, but that seems like overkill.
I used Notification Watcher to learn that Skype's API just works with NSDistributedNotifications. Repeating those notifications worked like a charm for a 64bit app.
Check out Scripting Bridge: Introduction to Scripting Bridge Programming Guide for Cocoa
If I remember right, the permission dialog does not come up once you allow permission.
I my Skype Apple Scripts I have to GUI to click them. If they come up.
tell application "Skype" to launch
delay 15
(* this part if the security API window comes up*)
tell application "System Events"
tell application process "Skype"
if exists (radio button "Allow this application to use Skype" of radio group 1 of window "Skype API Security") then
click
delay 0.5
click button "OK" of window "Skype API Security"
end if
end tell
end tell
delay 5
I've found out that if you open "Skype.app" by viewing bundle contents -> Frameworks you'll find a 64bit and 32bit skype.framework
This is an answer in reply to a request from twitter. I used this code after asking this question way back when. I have not needed to look into the Skype API since this works just fine, but I imagine that its been updated since I last tried to use it. Anyhow...
Here's a list of the NSDistributedNotifications that I use when communicating to skype:
SKSkypeAPINotification
SKSkypeAttachResponse
SKSkypeBecameAvailable
SKAvailabilityUpdate
SKSkypeWillQuit
Just like any other kind of NSDistributedNotification, you simply register and process the results:
[[NSDistributedNotificationCenter defaultCenter]
addObserver:self selector:#selector(setStatusAfterQuit:)
name:#"SKSkypeWillQuit"
object:nil
suspensionBehavior:NSNotificationSuspensionBehaviorDeliverImmediately];
These are the iVars that I keep to sync with Skype:
NSString *applicationName;
NSString *mostRecentStatus;
NSString *mostRecentStatusMessage;
NSString *mostRecentUsername;
int APIClientID;
BOOL isConnected;
BOOL needToSetMessage;
NSString *nextMessage;
NSString *nextStatus;
Here's an example of how to connect to skype:
-(void) skypeConnect{
if (!isConnected){
[[NSDistributedNotificationCenter defaultCenter] postNotificationName:#"SKSkypeAPIAvailabilityRequest"
object:nil
userInfo:nil
deliverImmediately:YES];
[[NSDistributedNotificationCenter defaultCenter] postNotificationName:#"SKSkypeAPIAttachRequest"
object:applicationName
userInfo:nil
deliverImmediately:YES];
}
}
Here's an example of getting the status message (after you've registered with Skype):
-(void) processNotification:(NSNotification *) note{
if ([[note name] isEqualToString:#"SKSkypeAttachResponse"]){
if([[[note userInfo] objectForKey:#"SKYPE_API_ATTACH_RESPONSE"] intValue] == 0){
NSLog(#"Failed to connect to Skype.");
isConnected = NO;
}else {
NSLog(#"Connected to Skype.");
APIClientID = [[[note userInfo] objectForKey:#"SKYPE_API_ATTACH_RESPONSE"] intValue];
isConnected = YES;
[self sendCommand:#"GET PROFILE MOOD_TEXT"];
if (needToSetMessage){
[self sendCommand:[NSString stringWithFormat:#"SET USERSTATUS %#",nextStatus]];
[self sendCommand:[NSString stringWithFormat:#"SET PROFILE MOOD_TEXT %#",nextMessage]];
needToSetMessage = NO;
nextMessage = #"";
nextStatus = #"";
}
}
}
}