Receive "Siri remote" event in background on tvOS - background

I have made a radio player for tvOS and I wan't the audio stream to keep playing while in background. All this works nicely and was pretty easy.
However I would like to stop the stream/audio if "play/pause" button is pressed while in background. But I can't figure out how to do this.
I only want it to stop, not pause. This is how Apple Radio works.
I'm handling all my input with Press events and Actions, setup from the interface builder.
What I've found so far is how it works on iOS, and I've been suggested to use, but remoteControlReceivedWithEvent is never called (not even in foreground).
Any help on this is highly appreciated, especially if you've had the luck with implementing it yourself ;)
UIApplication.sharedApplication().beginReceivingRemoteControlEvents()
override func remoteControlReceivedWithEvent(event: UIEvent?) {}

thisI was able to get working using MediaPlayer's MPRemoteCommandCenter
func setupRemoteCommandCenter() {
let remoteCommandCenter = MPRemoteCommandCenter.sharedCommandCenter()
let pauseCommand = remoteCommandCenter.pauseCommand
pauseCommand.enabled = true
pauseCommand.addTarget(self, action: "pauseEvent")
}
func pauseEvent() {
pause()
}

Related

ObjectiveC Accessibility API: UnMaximize Window

I’m not sure if I am referring to this correctly, but when I use the word “UnMaximize”, I’m referring to:
When you click on the green button which is third on the top left of a
Chrome Window, it Maximizes the Window. When I use the word
“UnMaximize” above, I’m referring to the behavior that clicks that
button again so that it is no longer in full screen.
(By the way, what is the correct word for this in MacOS Terminology?)
I enjoy using the Easy Move+Resize App. While it can move Windows around, unfortunately, it has no effect on windows that are Maximized. Fortunately, the code is available on Github.
I’m curious if anyone can point me how to UnMaximize a Window using the Accessibility API
Does anyone what is the UnMaximize equivalent to kAXCloseButtonAttribute
I’m using MacOs 10.12 if that helps.
I’m grateful to #Willeke - Willeke for pointing me in the correct direction.
As mentioned in my question, I was looking at the code of the Easy Move+Resize App on GitHub. The problem with this code/app is that it does not work for Windows that are currently Maximized i.e. it tries to move these Windows, but it cannot, because they are fixed. (Note: This only has use and is relevant in a multi-monitor setup.) This app works correctly for Windows that are not Maximized.
Here, I am trying to add code that would UnMaximize a window in order to move it, and then Maximize it again after it has been moved. Obviously, the code below is in the context of this app, but I’m sure would be useful to users in other contexts.
I first added a wasMaximized property to EMRMoveResize.h
//EMRMoveResize.h
#property bool wasMaximized;
Next, I moved to EMRAppDelegate.m where the actual Event Callback code is. It should be noted that we are only concerned with moving i.e. only concerned with the Left Mouse Button. (This app uses the Right Mouse Button for resizing, which is not relavent when the Window has been maximized.) So, we are only concerned with kCGEventLeftMouseDown, kCGEventLeftMouseDragged and finally with kCGEventLeftMouseUp. In pseudo code, I have done something like:
If (LeftMouseDown) {
Find out if Window is Maximized
If (Window is Maximized) {
set the wasMaximized property
Click FullScreen Button to UnMaximize the Window in Order to Move it
}
The Window is now UnMaximized would now move as other windows in the LeftMouseDragged event, which I have not made any changes to. Finally,
If(LeftMouseUp) {
If(wasMaximized value was set) {
Click FullScreen Button again to Maximize the Window (Since it started out as Maximized)
Reset the wasMaximized property
}
}
Now for the snippets of code changes to EMRAppDelegate.m
if (type == kCGEventLeftMouseDown
|| type == kCGEventRightMouseDown) {
//..
//Skipped Unchanged Code
//..
//Find out if Window is Maximized
CFTypeRef TypeRef = nil;
if (AXUIElementCopyAttributeValue((AXUIElementRef)_clickedWindow, CFSTR("AXFullScreen"), &TypeRef)) {
if(Debug) NSLog(#"Could not get wasMaximized Value");
} else {
[moveResize setWasMaximized: CFBooleanGetValue(TypeRef)];
if(Debug) NSLog(CFBooleanGetValue(TypeRef) ? #"Updated Maximized to True" : #"Updated Maximized to False");
}
//Click FullScreen Button to UnMaximize the Window in Order to Move it
if([moveResize wasMaximized]) {
AXUIElementRef buttonRef = nil;
AXUIElementCopyAttributeValue(_clickedWindow, kAXFullScreenButtonAttribute, (CFTypeRef*)&buttonRef);
if(Debug) NSLog(#"buttonRef: %p", buttonRef);
AXUIElementPerformAction(buttonRef, kAXPressAction);
CFRelease(buttonRef);
}
//..
//Skipped Unchanged Code
//..
}
if (type == kCGEventLeftMouseUp
|| type == kCGEventRightMouseUp) {
//..
//Skipped Unchanged Code
//..
//Click FullScreen Button again to Maximize the Window (Since it started out as Maximized)
AXUIElementRef _clickedWindow = [moveResize window];
if([moveResize wasMaximized]) {
AXUIElementRef buttonRef = nil;
AXUIElementCopyAttributeValue(_clickedWindow, kAXFullScreenButtonAttribute, (CFTypeRef*)&buttonRef);
if(Debug) NSLog(#"buttonRef: %p", buttonRef);
AXUIElementPerformAction(buttonRef, kAXPressAction);
CFRelease(buttonRef);
[moveResize setWasMaximized: false];
}
//..
//Skipped Unchanged Code
//..
}
This worked for me. But I'm not an expert in Objective C or MacOS, so if you feel something can be improved, feel free to edit this post.

Today Extension background update

Can I update data in Today Extension, while it's in background? In a sense not visibile on screen. Or Only it's showing on the screen in method widgetPerformUpdateWithCompletionHandler??? thx for answers!
Today extension is automatically updated in the background. The NCWidgetProviding protocol method widgetPerformUpdate handles this.
func widgetPerformUpdate(completionHandler: #escaping (NCUpdateResult) -> Swift.Void)
{
completionHandler(NCUpdateResult.newData)
}
This method is called:
When widget is updated in background.
Before widget snapshot is taken.
For more you can refer to: https://github.com/pgpt10/Today-Widget

How do I intercept downloads from a WKWebView?

I am making a Cocoa app that involves users selecting pictures from online for use within the app. I am also looking to collect contextual metadata from those downloads, such as the host the image came from, the website the user was visiting, the exact MIME type in the response headers, etc.
Basically I want to curate my user across the internet, downloading images and metadata into that user's account as I go. Until today I thought this would be impossible.
But just recently I was toying with a WKWebView and I tried right clicking on an image. I saw this...
Is there any way I could connect to that Download Image button, and get notifications when its clicked?
I did figure out how to make "Download Linked File" work and its a doozy that will not fit in a SO answer: https://github.com/kfix/MacPin/commit/9e5f925819f7f54ef29baff1e90783b820e683a3
However implementing those private delegate functions doesn't seem to allow "Download Image" to signal my WkWebView app in any way.
You can intercept those non-working "Download Image" and "Download Linked File" menu items by subclassing the WKWebView class and implementing the willOpenMenu method like this:
class MyWebView: WKWebView {
override func willOpenMenu(_ menu: NSMenu, with event: NSEvent) {
for menuItem in menu.items {
if menuItem.identifier == "WKMenuItemIdentifierDownloadImage" ||
menuItem.identifier == "WKMenuItemIdentifierDownloadLinkedFile" {
menuItem.action = #selector(menuClick(sender:))
menuItem.target = self
}
}
}
func menuClick(sender: AnyObject) {
if let menuItem = sender as? NSMenuItem {
Swift.print("Menu \(menuItem.title) clicked")
}
}
}
Instead of this you can also simply hide the menu items with menuItem.isHidden = true
Detecting the chosen menu item is one thing, but knowing what the user actually clicked in the WKWebView control is the next challenge :)

tvOS: Focus first button as preferred focus view when buttons are in horizontal order

I have been trying to focus the first button but focus engine takes the third button right below the tab bar as the first item to be focussed. I tried with preferred focus view but found that when i place the buttons in vertical order then preferred takes the preferred view to be focussed but when i placed all the buttons in horizontal plane it always takes the third button.The other approach i can think of if Focus Guide but i wonder how that will work in this scenario?
override weak var preferredFocusedView: UIView? {
get {
return thrirdButton
}
}
It happens because focus engine takes the nearest possible focus element as 1st element as you can see from the picture attached.I have attached the context screenshot for the view controller. Any help or clue to solve this will be appreciated.
Solution :
We need to add focus guide just above button 3 and redirect it to button one when the focus guide is focussed.
private var focusGuide = UIFocusGuide()
self.view.addLayoutGuide(focusGuide)
self.focusGuide.bottomAnchor.constraintEqualToAnchor(self.button3.topAnchor).active = true
self.focusGuide.leftAnchor.constraintEqualToAnchor(self.button3.leftAnchor).active = true
// Width and height
self.focusGuide.widthAnchor.constraintEqualToAnchor(self.button3.widthAnchor).active = true
self.focusGuide.heightAnchor.constraintEqualToAnchor(self.button3.heightAnchor).active = true
focusGuide.centerXAnchor.constraintEqualToAnchor(self.button3.centerXAnchor).active = true
override func didUpdateFocusInContext(context: UIFocusUpdateContext, withAnimationCoordinator coordinator: UIFocusAnimationCoordinator) {
self.focusGuide.preferredFocusedView = button1
}
Try adding a UIFocusGuide just above the button rows. In that case, before reaching the button, it will hit your focus guide in which you can redirect the preferredFocusedView to that particular button. The code to redirect is to be done by overriding didUpdateFocusInContext method.
Assuming you have setup the focus guide in viewDidload, the following is a sample,
override func didUpdateFocusInContext(context: UIFocusUpdateContext, withAnimationCoordinator coordinator: UIFocusAnimationCoordinator) {
super.didUpdateFocusInContext(context, withAnimationCoordinator: coordinator)
self.focusGuide.preferredFocusedView = self.mypreferredbutton
}
TO initialise a focus guide ( Do the addition of guide to view in viewDidLoad)
var focusGuide = UIFocusGuide()
self.view.addLayoutGuide(self.sidefocusGuide)
self.focusGuide.leftAnchor.constraintEqualToAnchor(self.placerLabel.leftAnchor).active = true
self.focusGuide.rightAnchor.constraintEqualToAnchor(self.placerLabel.rightAnchor).active = true
self.focusGuide.topAnchor.constraintEqualToAnchor(self.audioTable.topAnchor).active = true
I too faced a similar issue but somehow able to do it through this. The preferredFocusedView approach will also work, but you have to do lot of circus by updating some reference variable and then calling setneedsfocusupdate for that view. Try the focus guide way. Hope it helps.
EDITED:
I have added code how to setup the guide. In this case I have put the guide on the right side of my view. So, whenever your focus hits the guide, it redirects to the preferredfocusguide view that you want the focus to go to in the didUpdateFocusInContext. "There is only one view in focus at anytime.", remember thes ? So, the moment it hits the guide, the overriden method gets hit which in turn moves your focus to the guide's preferred view. For examples, you can refer to Apple's UIKitCatlog app for tvOS and here is one link explaining the same.
The best way to give the initial focus to your preferred view is by using preferredFocusEnivronments.
override var preferredFocusEnvironments: [UIFocusEnvironment] {
return [firstButton]
}
preferredFocusEnvironments will be called before didUpdateFocus, that way you can inform the system, where you want the focus to be redirected.

How can I interact with "iPad keyboard hiding button" programmatically?

There is a button at bottom right of iPad keyboard which is to hide the keypad.
How can I interact with it programmatically? (get the button then send UIControlEventTouchUpInside to it).
Does anyone know this?
[Edit]
In my case, the keyboard is shown on a modal view.
Overriding disablesAutomaticKeyboardDismissal to return NO as below allows you to dismiss the keyboard when you resignFirstResponder, even when your UITextView is on a modal view. You should put this code to your view controller, from which you initiate the keyboard:
- (BOOL)disablesAutomaticKeyboardDismissal {
return NO;
}
Source: https://stackoverflow.com/a/6268520
In general, you would send the resignFirsResponder message to the active input view.
Something like this? I can't remember where I found this code but I used it to toggle the on-screen keyboard because it would be hidden by default if a bluetooth one was connected.
- (void) toggleKeyboard(UIKeyboardImpl * keyImpl){
if (UIKeyboardAutomaticIsOnScreen()) {
UIKeyboardOrderOutAutomatic();
} else {
UIKeyboardOrderInAutomatic();
}
Edit
I found where I got this code from. It works fine but the catch is that you need to import the private framework GraphicsServices, which would most likely get your app rejected from the App store.