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fixed scrolling behavior of the collapsing layout

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nuclearfog 2023-12-03 22:28:50 +01:00
parent de936587f6
commit 13802171e7
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1 changed files with 9 additions and 3 deletions
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12
app/src/main/java/org/nuclearfog/twidda/ui/views/LockableConstraintLayout.java
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@ -18,6 +18,7 @@ public class LockableConstraintLayout extends ConstraintLayout {
private LockCallback callback;
private boolean yLock = false;
private float yPos = 0.0f;
private float xPos = 0.0f;
/**
* @inheritDoc
@ -40,21 +41,26 @@ public class LockableConstraintLayout extends ConstraintLayout {
case MotionEvent.ACTION_SCROLL:
case MotionEvent.ACTION_MOVE:
float deltaY = ev.getAxisValue(MotionEvent.AXIS_Y) - yPos;
// detect swipe up, then aquire scroll lock
if (deltaY < 0.0f && callback != null) {
float deltaX = ev.getAxisValue(MotionEvent.AXIS_X) - xPos;
// lock vertical scroll if left/right swipe was detected
if (Math.abs(deltaX) > Math.abs(deltaY))
requestDisallowInterceptTouchEvent(true);
// aquire vertical scroll lock
else if (deltaY < 0.0f && callback != null)
yLock = callback.aquireVerticalScrollLock();
}
yPos = ev.getAxisValue(MotionEvent.AXIS_Y);
break;
case MotionEvent.ACTION_POINTER_DOWN:
case MotionEvent.ACTION_DOWN:
// note the current coordinates touch event
xPos = ev.getAxisValue(MotionEvent.AXIS_X);
yPos = ev.getAxisValue(MotionEvent.AXIS_Y);
// fall through
default:
yLock = false;
requestDisallowInterceptTouchEvent(false);
break;
}
return yLock;