How can I get an Android TableLayout to fill the screen?
Solution 1
Finally worked out how to do this. Gave up on TableLayout
and just used horizontal LinearLayout
s inside a vertical one. The critical key is to set the weight. If you specify FILL_PARENT
but with the default weight, it doesn't work:
LinearLayout buttonsView = new LinearLayout(this);
buttonsView.setOrientation(LinearLayout.VERTICAL);
for (int r = 0; r < 6; ++r)
{
LinearLayout row = new LinearLayout(this);
row.setOrientation(LinearLayout.HORIZONTAL);
for (int c = 0; c < 4; ++c)
{
Button btn = new Button(this);
btn.setText("A");
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT);
lp.weight = 1.0f;
row.addView(btn, lp);
}
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT);
lp.weight = 1.0f;
buttonsView.addView(row, lp);
}
ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
setContentView(buttonsView, lp);
Solution 2
There are two mistakes in the above discussion.
-
It is possible to programatically set the weight by specifying
TableLayout.LayoutParams
andTableRow.LayoutParams
and using the appropriate constructor, e.g.TableLayout.LayoutParams rowInTableLp = new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, 1.0f);
A widget must have the
LayoutParams
of its parent. Therefore, the rows must useTableLayout.LayoutParams
.
This gives you the following working version of your initial code:
TableLayout table = new TableLayout(this);
// Java. You succeed!
FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.FILL_PARENT);
table.setLayoutParams(lp);
table.setStretchAllColumns(true);
TableLayout.LayoutParams rowLp = new TableLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.FILL_PARENT,
1.0f);
TableRow.LayoutParams cellLp = new TableRow.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.FILL_PARENT,
1.0f);
for (int r = 0; r < 2; ++r)
{
TableRow row = new TableRow(this);
for (int c = 0; c < 2; ++c)
{
Button btn = new Button(this);
btn.setText("A");
row.addView(btn, cellLp);
}
table.addView(row, rowLp);
}
setContentView(table);
Thanks to Romain Guy's comment on Android developer's forum for the solution.
Solution 3
Found the answer: apparently it is the layout_weight that makes it work and there is no way to set it from Java. Damnit.
See How can I get an Android TableLayout to fill the parent in landscape mode?
Timmmm
Updated on August 09, 2020Comments
-
Timmmm over 3 years
I'm battling with Android's awful layout system. I'm trying to get a table to fill the screen (simple right?) but it's ridiculously hard.
I got it to work somehow in XML like this:
<?xml version="1.0" encoding="utf-8"?> <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="fill_parent" android:layout_width="fill_parent"> <TableRow android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_weight="1"> <Button android:text="A" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> <Button android:text="B" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> </TableRow> <TableRow android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_weight="1"> <Button android:text="C" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> <Button android:text="D" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_weight="1"/> </TableRow>
However I can not get it to work in Java. I've tried a million combinations of the LayoutParams, but nothing ever works. This is the best result I have which only fills the width of the screen, not the height:
table = new TableLayout(this); // Java. You suck. TableLayout.LayoutParams lp = new TableLayout.LayoutParams( ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT); table.setLayoutParams(lp); // This line has no effect! WHYYYY?! table.setStretchAllColumns(true); for (int r = 0; r < 2; ++r) { TableRow row = new TableRow(this); for (int c = 0; c < 2; ++c) { Button btn = new Button(this); btn.setText("A"); row.addView(btn); } table.addView(row); }
Obviously the Android documentation is no help. Anyone have any ideas?