Android, FragmentActivity and prevent Swipe
- by FIG-GHD742
I use android.support.v4.app.FragmentActivity for create a app with multi fragment/panels that can be access by drag/swipe between different part of the app.
In one of my fragment I has a zoomable view and my problem is in case I is on the zoomable view I will prevent the use for drag/swipe to a other fragment.
I has try to hack into android.support.v4.view.ViewPager for get the action from on Touch event but not work.
I has try all of this case but not work:
(All code is a a part of subclass to android.support.v4.view.ViewPager)
Case 1:
// Not working
@Override
protected void onPageScrolled(int position, float offset, int offsetPixels) {
if (isPreventDrag()) {
super.onPageScrolled(position, 1, 0);
} else {
super.onPageScrolled(position, offset, offsetPixels);
}
}
Case 2:
// Work but stop all event include the event to the target image view.
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
lastX = ev.getX(); // float
lockScroll = false;
return super.onInterceptTouchEvent(ev);
case MotionEvent.ACTION_MOVE:
this.lockScroll = this.isPreventDrag();
break;
}
if (lockScroll) {
ev.setLocation(lastX, ev.getY());
return super.onInterceptTouchEvent(ev);
} else {
return super.onInterceptTouchEvent(ev);
}
}
Case 3:
// Work good, but by some unknown error I can drag the screen
// some pixels before this stop the event.
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (this.isPreventDrag()) {
return true;
} else {
return super.onTouchEvent(ev);
}
}
I want a easy way to deactivate stop or deactivate if the use is allow to switch to a other Fragment.
Here is a working code for me, I don't know what error I do before.
// This work for me,
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (this.isPreventDrag()) {
return false;
} else {
return super.onInterceptTouchEvent(ev);
}
}
