Develop Reference

How to disable android' touchscreen device?

The App currently runs in IMMERSIVE_STICKY mode, but when user swipes from the side - OS shows menu and home/back buttons. So user can turn my app off or run some other stuff which is unacceptable. Therefore, I need to disable touchscreen device completely on android to prevent any taps and swipes.
If i cant disable it via official API, can i disable touchpad using console? Android will be rooted.
I found that my touchpad device is /sys/devices/virtual/input/input1 but still cant find where can I disable it. /power/control takes only 'on' or 'auto'.
I found other solution with xinput but on android there is no one.

I think you can override the function onTouchEvent.
private boolean touch_disabled=true;
#Override
public boolean onTouchEvent(MotionEvent e) {
if (touch_disabled){
return true;
}else {
//do something here if your touch screen is activated
}
}
public disable_touch(boolean b) {
touch_disabled=b; //function to activate or desactivate touch screen
}

Android detect or block floating/overlaying apps

Android enables apps to draw over other apps with android.permission.SYSTEM_ALERT_WINDOW and it's called a floating/overlaying app. For example Facebook Messenger has always visible chat bubbles at the edges of screen.
My question is: Is it possible to detect or block in Java code any app which draws over my app?

There is a View#onFilterTouchEventForSecurity() method you can override to detect if the motion event has the FLAG_WINDOW_IS_OBSCURED. This will let you know if something is drawn on top of your view.
#Override
public boolean onFilterTouchEventForSecurity(MotionEvent event) {
if ((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_OBSCURED) == MotionEvent.FLAG_WINDOW_IS_OBSCURED){
// show error message
return false;
}
return super.onFilterTouchEventForSecurity(event);
}
If you just want to protect your app from tap jacking due to another app drawing over your app you can add setFilterTouchesWhenObscured to your views via XML or programmatically.

prevent css/jquery popups from allowing links underneath to be clicked (mobile only)

so i have created !a simple popup using css and jquery. the problem is, when the popup is activated, links underneath the popup can still be clicked. is there any way to prevent this from happening. the click box for some of the links in the popup are small and one can easily click next to it which means the link underneath the popup is clicked.
the site i am working on: taxslayerplayer.com, look at it on an android and you will see what i mean. also, i have experienced this problem on many other websites while browsing on my phone.
any pointers would be appreciated, thanks!

I'm not sure about a strictly-mobile solution, but you could check for the pop-up being visible and, if it's visible, simply return false in the click-handler for links:
$('a').filter(
function(){
return !$(this).closest(popupSelector).length;
}).on('click', function(e){
if ($(popupSelector).is(':visible')) {
return false;
}
else {
// do whatever you'd normally do with the links
}
});
Alternatively, you could instead use a variable, for example popupIsShown, set it to false initially (on DOMReady), and then set it to true when the popup is shown, and reset to false when it's re-hidden, making the if check a little less expensive:
$('a').filter(
function(){
return !$(this).closest(popupSelector).length;
}).on('click', function(e){
if (popupIsShown) {
return false;
}
else {
// do whatever you'd normally do with the links
}
});

Use a boolean value and set it to false in case of pop-ups. It works!
PS : Just checked.. David has already answered it.

Disable parts of the touch screen in android

So I was trying to disable the screen for an app I am making for a brief period using this
#Override
public boolean onTouchEvent(MotionEvent pMotioneEvent) {
if(pMotioneEvent.getY() < TestSprite.getY()){
return false;
}else{
return true;
}
}
but this seems to have no effect. I read around and it seems like in general its a bad idea to disable the touch screen, but I'm still curious to know if there is a way.
Thanks

You could try
requestDisallowInterceptTouchEvent

If you want to check for touchevents in a certain area of your screen, you might want to put this in a View and set a touchEvent Listener to it.

Create a Button glSurfaceView in Android

I'm having a bit of a problem with this. I wanted to make a push button. However, I don't know how to use the Button class with OpenGL. I am not using the "R" class within Java instead I am using the old "assets" folder for compatibility.
I have it setup to find if you have touched the button and on "touch up" load the next screen. The flaw in this is that you can touch the screen and then drag your finger over to the button and then lift your finger. The next screen will load, because it has registered the touch up event at that position.
The easiest way to fix this would be to use the Button class, but how do I use it (especially because I won't be able to use findViewById)?
This is the code I was using but when onTouchUp check for a collision touchDown has magically changed to be the same as TouchUp?
private void onTouchDown(Vector2 point)
{
if (test.justUp)
{
test.setTouchDown(point);
test.justUp = false;
}
}
private void onTouchUp(Vector2 point)
{
test.setTouchUp(point);
test.justUp = true;
if(OverlapTester.pointInRectangle(test.bounds, test.touchUp) &&
OverlapTester.pointInRectangle(test.bounds, test.touchDown))
{
game.setScreen(new LevelSelect(game));
return;
}
}

When creating your own button class, register the "touch down" position and the "touch up" position. If they've both been registered inside your button graphic area, the button is pressed.