Cant change linearlayout height in getView()

Question

The fragment.xml contains linearlayout and a button inside a RelativeLayout. I need to resize the height of the linearlayout on button click but it doesn't work (nothing happens). However, setting the text of the textview is working. Any ideas? I'm not sure if this is even possible.

getView() function :

@Override
public View getView(int _position, View _view, ViewGroup _parent) {

View view = _view;

ViewHolder m_viewHolder ;

 if (view == null) {

    LayoutInflater inflater = (LayoutInflater) m_ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

     view = inflater.inflate(R.layout.fragment_user, _parent, false);

     m_viewHolder = new ViewHolder();

     m_viewHolder.btn_test = (ImageButton)view.findViewById(R.id.btn_details);

     m_viewHolder.btn_test.setOnClickListener(changeLLHeight);

     view.setTag(m_viewHolder);

} else {
     m_viewHolder = (ViewHolder) view.getTag();
}

m_viewHolder.btn_test.setTag(_position);


return view;
}

OnClickListener():

private View.OnClickListener changeLLHeight = new View.OnClickListener() {
  @Override
  public void onClick(View v) {

    RelativeLayout rl = (RelativeLayout)v.getParent();

    LinearLayout ll = (LinearLayout)rl.getChildAt(1);

    TextView tv = (TextView)rl.getChildAt(2);

    ll.getLayoutParams().height = 20;
    ll.requestLayout();

    tv.setText("Oi!!");

    Toast.makeText(getContext(), "", Toast.LENGTH_SHORT).show();


  }
};

You should update the layout params instead – Niza Siwale Jul 04 '18 at 18:32 — Niza Siwale, Jul 04 '18 at 18:32
What do you mean "update the layout instead"? – EMP Jul 05 '18 at 02:28 — EMP, Jul 05 '18 at 02:28

score 1 · Answer 1 · answered Jul 04 '18 at 18:31

1

U can use

LinearLayout ll = (LinearLayout)rl.getChildAt(1);
LayoutParams params = ll.getLayoutParams();

// Changes the height and width to the specified *pixels*
params.height = 100;
params.width = 100;
ll.setLayoutParams(params);

answered Jul 04 '18 at 18:31

Deepanshu Rustagi

13
3

score 0 · Answer 2 · answered Jul 04 '18 at 18:33

0

Here's what you need:

RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)
                            ll.getLayoutParams();
params.height = 20;
ll.setLayoutParams(params);

answered Jul 04 '18 at 18:33

RoyalGriffin

1,987
1
12
25

score 0 · Answer 3 · answered Jul 04 '18 at 18:38

0

You need to apply the parameter with setLayoutParams

Android: How to Programmatically set the size of a Layout

LayoutParams params = ll.getLayoutParams();
params.height = 20;
ll.setLayoutParams(params);

answered Jul 04 '18 at 18:38

Dan Sposito

1
1

Cant change linearlayout height in getView()

3 Answers3