Question

TableLayout relativeLayout = (TableLayout)findViewById(R.id.ll1);
        TableRow row =new TableRow(this); 
        Button button ;
        int counter = 0;

        for(int i = 0;i<=13;i++){
                counter++;
                button = new Button(this);
                button.setText(counter);


                row.addView(button);

            }

        relativeLayout.addView(row,new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
        relativeLayout.computeScroll();             

XML File

<TableLayout android:id="@+id/ll1"  android:shrinkColumns="true"
        android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/button1"
        xmlns:android="http://schemas.android.com/apk/res/android"></TableLayout>

But whenever i execute my application it just move my buttons in a single row and after 5 buttons all the buttons move out from the screen. i dont’ want to add more rows as i don’t want to hard-code anything in my code like placing some code if (counter%5==0) then do this and that.

Is there any other way to calculate the width that if the buttons are equivalent to the width of screen then do this or that or any other way like any property in table Layout which simply wrap content of a row?

Answer 1

Yes there is a way to get the exact width of any component in your app. Look at my answer to my question asked a while ago here. As you can see, I instantiate a Paint object, but that’s not necessary unless you wish to get the width of the text itself. However you must use the density multiplier:

float scale = getContext().getResources().getDisplayMetrics().density;

That will convert any function that gets the width of a component (in this case, your button) to the actual pixel width on any given devices. So you would get the button width (via invoking the getWidth() function on your Button object) and then multiply by that scaling factor.