Question

I am building a simple text editor. I wanted to align text to left, center and right.

I did following, but does not change the alignment of the text

How do I do this?

EditText txt = (EditText) findViewById(R.id.txt_gcFrontInsideTextData);
    if (command == 0 )
    {
        LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, Gravity.TOP | Gravity.LEFT);
        txt.setLayoutParams(p);
    }
    else if (command == 1)
    {
        LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, Gravity.TOP | Gravity.CENTER_HORIZONTAL);
        txt.setLayoutParams(p);
    }
    else if (command == 2)
    {
        LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, Gravity.TOP | Gravity.RIGHT);
        txt.setLayoutParams(p);
    }

Answer 1

First of all, LinearLayout.LayoutParams constructor does not take gravity as a parameter – third parameter is layout weight.
Field gravity of LinearLayout.LayoutParams is in fact layout_gravity, which defines layout aligment inside it’s parent.

What you need is

if (command == 0 )
{
    txt.setGravity(Gravity.TOP | Gravity.LEFT);
} 

for example.