Set the layout weight of a TextView programmatically

Question

I'm trying to dynamically create TableRow objects and add them to a TableLayout. The TableRow objects has 2 items, a TextView and a CheckBox. The TextView items need to have their layout weight set to 1 to push the CheckBox items to the far right.

I can't find documentation on how to programmatically set the layout weight of a TextView item.

score 365 · Answer 1 · edited Jul 31 '12 at 16:10

365

You have to use TableLayout.LayoutParams with something like this:

TextView tv = new TextView(v.getContext());
tv.setLayoutParams(new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1f));

The last parameter is the weight.

edited Jul 31 '12 at 16:10

Dorje

1,067
2
9
9

answered Jul 11 '10 at 19:33

Macarse

91,829
44
175
230

15

I didn't mention this before, so I'm sorry. But I tried this prior to asking my question. It makes the TextView disappear from the layout. But, on a positive note, I found that setting the stretch_columns property of the TableLayout to 0 causes the effect I'm looking for (TextView's on the left, CheckBoxes on the right). Thanks for the help. – eugene Jul 12 '10 at 00:35
8

If you are importing an XML layout and you are not creating your layout dynamically, you can grab it like this: `TextView tv = (TextView) findViewById(R.id.your_textview_inside_the_linearlayout); tv.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 0.1f));` – Eric Leschinski Apr 13 '12 at 20:51
7

To set the layout weight programmatically, `TableRow.LayoutParams` should be used instead of `TableLayout.LayoutParams`. See @Dorje's answer. – Halil Aug 28 '14 at 12:56
import android.widget.LinearLayout; import android.widget.TableLayout; – Prakash Nov 17 '15 at 19:53
1

Note that most people would use 0 as first or second parameter (depending if horizontal or vertical) and not WRAP_CONTENT since what they are looking for is to set the weight. – FlorianB Nov 14 '16 at 18:36
table.setStretchAllColumns(true); – Hack06 Oct 13 '17 at 08:38

Dorje · Answer 2 · 2012-09-20T20:05:26.873

101

The answer is that you have to use TableRow.LayoutParams, not LinearLayout.LayoutParams or any other LayoutParams.

TextView tv = new TextView(v.getContext());
LayoutParams params = new TableRow.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
tv.setLayoutParams(params);

The different LayoutParams are not interchangeable and if you use the wrong one then nothing seems to happen. The text view's parent is a table row, hence:

http://developer.android.com/reference/android/widget/TableRow.LayoutParams.html

edited Sep 20 '12 at 20:05

answered Jul 31 '12 at 16:06

Dorje

1,067
2
9
9

This answer helped me a lot...TableLayout did not worked for me – shyam.y Sep 18 '14 at 09:40
Aw man, you saved me so much time. Where is it specified? I found nothing in documentation about you cannot interchange `LayoutParams` – Adrien Cadet Jan 07 '15 at 19:45
`TableRow.LayoutParams` did the job for me too – Menelaos Kotsollaris Feb 08 '15 at 22:54
6

The key part of this answer is the 0 – Leon Nov 12 '15 at 14:24
It will reduce my work time.Im searching for this for a long time.Very great solution – SIVAKUMAR.J Feb 14 '18 at 11:15

sberezin · Answer 3 · 2015-01-13T09:30:44.493

41

In the earlier answers weight is passed to the constructor of a new SomeLayoutType.LayoutParams object. Still in many cases it's more convenient to use existing objects - it helps to avoid dealing with parameters we are not interested in.

An example:

// Get our View (TextView or anything) object:
View v = findViewById(R.id.our_view); 

// Get params:
LinearLayout.LayoutParams loparams = (LinearLayout.LayoutParams) v.getLayoutParams();

// Set only target params:
loparams.height = 0;
loparams.weight = 1;
v.setLayoutParams(loparams);

edited Jan 13 '15 at 09:30

answered May 03 '14 at 22:52

sberezin

3,266
23
28

loparams could be NULL so make sure you check that before calling setLayoutParams() – AAgg Jul 09 '15 at 16:19
@AAgg, not in a practical situation. View wouldn't have inflated if it hadn't width and height set. But I agree - it's a good practice to check when there're doubts about null. – sberezin Jul 10 '15 at 07:34

score 17 · Answer 4 · answered Feb 29 '16 at 07:15

TextView txtview = new TextView(v.getContext());
LayoutParams params = new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
txtview.setLayoutParams(params);

1f is denotes as weight=1; you can give 2f or 3f, views will move accoding to the space

score 13 · Answer 5 · edited May 09 '13 at 06:10

13

just set layout params in that layout like

create param variable

 android.widget.LinearLayout.LayoutParams params = new android.widget.LinearLayout.LayoutParams(
            LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT, 1f);

1f is weight variable

set your widget or layout like

 TextView text = (TextView) findViewById(R.id.text);
 text.setLayoutParams(params);

edited May 09 '13 at 06:10

Android Killer

18,174
13
67
90

answered May 04 '13 at 09:08

Manikandan

844
15
31

where do you get this information that 1f means the weight variable ? Can you provide a link please ? – hayonj Sep 25 '13 at 04:31
@hayonj just check sources of `LinearLayout.LayoutParams` constructor. 3rd parameter is weight. Or [documentation](http://developer.android.com/reference/android/widget/LinearLayout.LayoutParams.html) – mente Oct 25 '13 at 15:01

anand krish · Answer 6 · 2015-10-12T07:20:58.597

TextView text = new TextView(v.getContext());
text.setLayoutParams(new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT, 
                                                LayoutParams.WRAP_CONTENT, 1f));

(OR)

TextView tv = new TextView(v.getContext());
LayoutParams params = new TableRow.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
tv.setLayoutParams(params);

1f is refered as weight=1; according to your need you can give 2f or 3f, views will move accoding to the space. For making specified distance between views in Linear layout use weightsum for "LinearLayout".

LinearLayout ll_Outer= (LinearLayout ) view.findViewById(R.id.linearview);
LinearLayout llInner = new LinearLayout(this);
            LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FillParent, LinearLayout.LayoutParams.WrapContent);
            llInner.Orientation = Orientation.Horizontal;
            llInner.WeightSum = 2;
            ll_Outer.AddView(llInner);

Ashok Reddy M · Answer 7 · 2018-10-16T11:09:19.910

10

This should works to you

LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT LayoutParams.MATCH_PARENT);

param.weight=1.0f;

edited Oct 16 '18 at 11:09

answered Aug 08 '16 at 11:36

Ashok Reddy M

330
3
9

score 7 · Answer 8 · answered Feb 08 '14 at 10:33

7

You can also give weight separately like this ,

LayoutParams lp1 = new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);

 lp1.weight=1;

answered Feb 08 '14 at 10:33

kiran boghra

3,662
2
18
23

score 6 · Answer 9 · edited Sep 28 '12 at 21:08

This work for me, and I hope it will work for you also

Set the LayoutParams for the parent view first:

myTableLayout.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT,
                TableLayout.LayoutParams.FILL_PARENT));

then set for the TextView (child):

 TableLayout.LayoutParams textViewParam = new TableLayout.LayoutParams
     (TableLayout.LayoutParams.WRAP_CONTENT,
     TableLayout.LayoutParams.WRAP_CONTENT,1f);
     //-- set components margins
     textViewParam.setMargins(5, 0, 5,0);
     myTextView.setLayoutParams(textViewParam);

score 2 · Answer 10 · answered Apr 20 '19 at 15:18

After strugling for 4 hours. Finally, This code worked for me.

3 Columns are there in a row.

  TextView serialno = new TextView(UsersActivity.this);
  TextView userId = new TextView(UsersActivity.this);
  TextView name = new TextView(UsersActivity.this);

  serialno.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT, 1f));
  userId.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT, 1f));
  name.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT, 1f));

score 1 · Answer 11 · answered Jan 28 '14 at 19:04

There is another way to do this. In case you need to set only one parameter, for example 'height':

TextView textView = (TextView)findViewById(R.id.text_view);
ViewGroup.LayoutParams params = textView.getLayoutParams();
params.height = ViewGroup.LayoutParams.WRAP_CONTENT;
textView.setLayoutParams(params);

score -1 · Answer 12 · answered Sep 02 '11 at 20:03

I had a fair amount of difficulty with a solution something very similar to this: trying to have two buttons in a TableRow, with each being half the screen width. For whatever reason, the left button would always be about 70% of the width, and the right button 30%. Calling table_layout.setStretchAllColumns(true) had no effect, nor did setting the button's width to half the screen, nor setting their layout weight.

The solution I ended up with was nesting a LinearLayout in the TableRows, which did take into account the value of the buttons' width.

    TableLayout layout = new TableLayout(this);
    TableRow top_row = new TableRow(this);
    left_button = styleButton();
    right_button = styleButton();
    LinearLayout toprow_layout = new LinearLayout (this);
    toprow_layout.setOrientation(LinearLayout.HORIZONTAL);
    toprow_layout.addView (left_button);
    toprow_layout.addView(right_button);
    toprow.addView(top_layout);
    layout.addView(top_row)

    private Button styleButton() {
            Button btn = new Button (this);
            android.view.Display display = ((android.view.WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();      
            btn.setWidth((int)(display.getWidth()/2));    // set width to half
            btn.setHeight(((int)display.getHeight()/6));  // set height to whatevs
            btn.setText("foo");
            return btn;
        }

Just so you know for the future, the solution is to set the TableRow, Button1, and Button2 to all have `layout_width=fill_parent`, and after doing that, set the `layout_weight=1` for both button1 and button2. All elements with fill_parent and a layout_weight=1 will be given an equal size upon inflation. — edthethird, Mar 02 '12 at 18:00

Set the layout weight of a TextView programmatically

12 Answers12

Linked