Android ViewPager片段

Question

I would like to ask if someone now's, is it possible to force ViewPager to instantiate one item at a time, not two as it does on default? Because I have one ViewPager with three fragments and one of them contains EditText which must force soft keyboard to show. The problem is that ViewPager instantiate two fragments at a time an when I come from third fragment to second, first is ceated and it forces soft keyboard to show on fragment with no EditText ... Thanks in advance.

Answer 1

The short answer is that you can't force the ViewPager not to create at least one offscreen fragment. That's simply necessary for the animation to work.

As a workaround, you might check if the fragment is currently displayed and depending on that show the keyboard. You can check this by overriding setMenuVisibility

@Override
public void setMenuVisibility(final boolean visible) {
    super.setMenuVisibility(visible);
    if (visible) {
        // show keyboard
    }
}