Disable scrolling in fragmentPagerAdapter? - Android

Question

Hi guys, I have a fragmentPagerAdapter with three fragments in it. How would I disable scrolling between three fragments so that the user uses only tabs to go between fragments?

Hooray!

private class ViewPagerAdapter extends FragmentPagerAdapter
{
    ArrayList<Fragment> fragments = new ArrayList<>();
    ArrayList<String> tabTitles = new ArrayList<>();

    public ViewPagerAdapter(android.support.v4.app.FragmentManager fragmentManager)
    {
        super(fragmentManager);
    }
    @Override
    public Fragment getItem(int position)
    {
        return fragments.get(position);
    }
    @Override
    public int getCount()
    {
        return fragments.size();
    }
    @Override
    public CharSequence getPageTitle(int position)
    {
        return tabTitles.get(position);
    }
    public void addFragments(Fragment fragment, String titles)
    {
        this.fragments.add(fragment);
        this.tabTitles.add(titles);
    }
}

Answer 1

You can configure a custom pager of the form as follows: -

    public class LockableViewPager extends ViewPager {
private boolean swipeable;

    

    public LockableViewPager(Context context) {

        super(context);

    }


    public LockableViewPager(Context context, AttributeSet attrs) {

        super(context, attrs);

        this.swipeable = true;

    }


    @Override

    public boolean onTouchEvent(MotionEvent event) {

        if (this.swipeable) {

            return super.onTouchEvent(event);

        }


        return false;

    }


    @Override

    public boolean onInterceptTouchEvent(MotionEvent event) {

        if (this.swipeable) {

            return super.onInterceptTouchEvent(event);

        }


        return false;

    }


    public void setSwipeable(boolean swipeable) {

        this.swipeable = swipeable;

    }

}

And then in the layout you can set it as: -

<mypackage.lockableviewpager android:id="@+id/photosViewPager" android:layout_height="match_parent" android:layout_width="match_parent"/>

And then just call

setSwipeable(false)

Hope this helps.

Answer 2

Here is a bit more detailed information on the LockableViewPager class example ...

, ViewPager,

<android.support.v4.view.ViewPager
    android:layout_width="match_parent"
    android:layout_height="match_parent">
</android.support.v4.view.ViewPager>

, VP

public class LockableViewPager extends ViewPager {
  private boolean swipeable;

  public LockableViewPager(Context context) {
      super(context);
  }

  public LockableViewPager(Context context, AttributeSet attrs) {
      super(context, attrs);
      this.swipeable = true;
  }

  @Override
  public boolean onTouchEvent(MotionEvent event) {
      if (this.swipeable) {
          return super.onTouchEvent(event);
      }
      return false;
  }

  @Override
  public boolean onInterceptTouchEvent(MotionEvent event) {
      if (this.swipeable) {
          return super.onInterceptTouchEvent(event);
      }
      return false;
  }

  public void setSwipeable(boolean swipeable) {
      this.swipeable = swipeable;
  }
}

@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
  if (this.swipeable) {
      return super.onInterceptTouchEvent(event);
  }
  return false;
}

, ViewPager plus,

<com.YourPackage.LockableViewPager
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
</com.YourPackage.LockableViewPager>

java, LockableViewPager

LockableViewPager viewPager;
OnCreate() {
  viewPager = (LockableVewPager) findViewById(R.id.*id of pager*);
  viewPager.setSwipable(false);
}

, (.. ViewPager), , , ; *