When using a floating view (TYPE_PRIORITY_PHONE) how can the Home button be intercepted?
This behaviour is demonstrated in Facebook's "chat heads" where a conversation (which isn't an Activity) is collapsed on a home button click.
You could poll the top running app, and determine when it changes. This will detect the first home press, but if the users is already on the home screen, you will not detect it.
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Are there any way for prevent user open difference app?.
I tried to use startLockTask(); in activity, and make application full screen, but user still out this mode by press on back and menu button.
So how can I prevent android show navigation bar when user touch down from top or touch up from bottom of screen?
I have a listener on the whole app for the back button press event in android to override the default behaviour of back button(exit the app).
Also in some component i have override it too if i want the back button to be disabled or do something else.
The problem is when i open a react-native-picker, the picker stays on the screen ignoring the back button press.
I want it to first close (on the first back button press) and only then do what the higher component ordered to do when back button is pressed.
so i can't override the the higher component back button handling
i thought maybe to add the picker as a screen in the navigator and instead of planting it as a component, navigate to it, so it will be added to the stack navigator.
then by default it will first pop it of the stack when pressing back.
how can i add the picker component as a screen to navigate to, or is there a better way to do that?
By default the back behavior collapses or closes the picker on Android (depending on the mode you have chosen). You can see a working example here.
Some newer Android devices have removed the hard Home Button and replaced it with a soft pop up navigation bar at the bottom of the screen that appears when the user swipes up. I've found that the Home Button can also be accessed by hard pressing (not just long clicking, kind of like iOS force touch) the area where the Home Button would appear if navigation bar is visible. This action triggers an onClick event within the current application before navigating to the device home screen. How can I prevent the onClick event within the application?
You can see in the image below how the navigation bar Home Button overlays the app button. Thanks for any help, I feel like i'm missing something really obvious.
I am developing an app
and I need to disable the home button or change his behavior on clicking a button
how can I do it?
I have already tried to use the onKeyDown event and other events
You cannot block the Home button from sending intent android.intent.category.HOME which switches to the launcher but you can set your window to be always on top so the launcher won't be shown.
I have noticed the splash screen does not display when user clicks the middle button on a real device to quit an application but if user selects back button from main menu to quit app and relaunches the splash screen will display.
Question is what function is the middle button performing compared to the back pressed and is there a way to ensure the splash screen is displayed when the middle button is used to quit an application.
Thanks.
The HOME button takes the user to the home screen (also called the Launcher). The BACK button by default finishes the current activity, which usually results in the user ending up on the previous activity he was in, until he reaches the home screen. The difference is BACK will explicitly finish an Activity, whereas HOME will not.