Question

For example I create 4 tablerows programatically and I want each tablerow height to be 1/4 size of the screen. Each tablerow height is half the screen size. I tried different ways, but tablerow height didn’t change. I manage change tablerow width, but height doesn’t.
Here is my code :

@SuppressLint("NewApi")
public class GameActivity extends Activity {

    private Context context;

    public void drawTable(){
        int i;
        TableLayout table = new TableLayout(context);

        table.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT, TableLayout.LayoutParams.MATCH_PARENT));
        //table.setStretchAllColumns(true);
        //table.setShrinkAllColumns(true);
        //table.setWeightSum(1.0F);
        TableRow[] rows = new TableRow[5];
        for(i = 0; i < 4; ++i){
            rows[i] = new TableRow(context);
            rows[i].setBackgroundResource(R.drawable.images214);
            rows[i].setWeightSum((float)1.0);
            rows[i].setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, 10));
            //rows[i].setScaleY(0.25F);
            table.addView(rows[i]);
        }

        LinearLayout l = (LinearLayout) findViewById(R.id.linear);
        l.addView(table);
    }
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_game);

        context = this;
//        TableLayout table = new TableLayout(this);
//        TableRow row1 = new TableRow(this);
//        TableRow row2 = new TableRow(this);
//        row1.addView(new EditText(this));
//        row2.addView(new Button(this));
//        table.addView(row1);
//        table.addView(row2);
//        //table.setBackground(getResources().getDrawable(R.drawable.ic_launcher));
//        table.setBackgroundResource(R.drawable.ic_launcher);
//        LinearLayout l = (LinearLayout) findViewById(R.id.linear);
//        l.addView(table);
        drawTable();

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_game, menu);
        return true;
    }
}

XML:

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

  <ScrollView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:scrollbars="none"
    android:layout_weight="1">
        <LinearLayout 
         android:id="@+id/linear" 
         android:layout_width="match_parent"
         android:layout_height="match_parent"  
         android:scrollbars="vertical|horizontal">
        </LinearLayout>
 </ScrollView>
</RelativeLayout>

Answer 1

You’re not using the proper LayoutParams, for the table TableLayoutyou should set LinearLayout.LayoutParams(as you add the table to a LinearLayout) and for your TableRows the LayoutParams should be TableLayout.LayoutParams(as they are children of TableLayout). Even with the above changes things will not work because the TableLayout is a widget that imposes constraints on its children, most notable the height will be automatically set to WRAP_CONTENT for TableRows. The only way to change this is to use weight like this:

TableLayout table = new TableLayout(context);
table.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
table.setWeightSum(1.0f);
TableRow[] rows = new TableRow[4];
for(int i = 0; i < 4; ++i){
    rows[i] = new TableRow(context);
    rows[i].setBackgroundResource(R.drawable.images214);
    rows[i].setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT, 0, 0.25f));        
    table.addView(rows[i]);
}

LinearLayout l = (LinearLayout) findViewById(R.id.linear);
l.addView(table);

But this will not work, because your TableLayout is set to fill the parent, parent which is a ScrollView which doesn’t imposes dimensions on its child. I don’t know what you’re trying to do with that ScrollView there(especially as you want the table to fill the entire screen) so I don’t know what to recommend you. Also, I don’t know your full layout but your nesting to many layouts.