Add Button programmatically with parameters?

Question

Basically, I have this layout structure: <RelativeLayout> <RelativeLayout> <TextView /> </RelativeLayout> <ScrollView> <RelativeLayout> ... </RelativeLayout> </ScrollView> </RelativeLayout> and I want to add a button programmatically. This button should be inside the <RelativeLayout>, which is inside the <ScrollView>. Also, I need it to be align to the bottom and CENTER_VERTICAL. I would really appreciate any hints/examples ;) Thanks! P.S. Although, there are many similar questions on stackoverflow, none of the answers helped me...

select xml and press CTRL+SHIFT+K to format the code so that it will be looks good. — Paresh Mayani
– Paresh Mayani, Commented Jan 2, 2012 at 8:12

Thommy · Accepted Answer · 2015-06-19 13:03:58Z

8

First you need to give your relative Layout in XML an ID: android:id="@+id/myLayout". Then in Java code:

Button b = new Button(this);
RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
rl.addRule(RelativeLayout.ALIGN_BOTTOM);
b.setLayoutParams(rl);
((RelativeLayout) findViewById(R.id.myLayout)).addView(b);

edited Jun 19, 2015 at 13:03

answered Jan 2, 2012 at 8:21

Thommy

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4 Comments

lomza Over a year ago

Thank You so much! I also added params.bottomMargin = 20; for a nicer look and change my .xml file, because the RelativeLayout there had 'WRAP_CONTENT' and it was impossible to align my button to the bottom.

lomza Over a year ago

I was also interested if I can "say" programmatically, that the newly created button should be below some TextView, for instance? Thanks.

Thommy Over a year ago

Sure you can: rl.addRule(RelativeLayout.BELOW, R.id.textview01);

Vijay Over a year ago

buttons are getting on top of each other, how to make them go right side and if space is full then below. Please help.

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