CODEWITHSUNDEEP
javaandroidbuttonruntime
user1910290
user1910290

Reputation: 537

Change height of android button through code

I am trying to change the height and width of a button through code at runtime.

My layout xml

   <Button
    android:id="@+id/button1"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:layout_alignParentRight="true"
    android:layout_below="@+id/button2"
    android:background="@drawable/button1_background" 
    />

Main activity code

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
   //some other code
   int displaywidth= getResources().getDisplayMetrics().widthPixels;
    Button f_button = (Button) findViewById(R.id.button1);
    Log.d("F_button width before is",""+ f_button.getWidth());
    f_button.setWidth(displaywidth/2);
    Log.d("F_button width after is",""+ f_button.getWidth());
//some other code
}

The Logcat shows both F_button after and before width as "0".

what am I doing wrong.

thanks!.

Upvotes: 3

Views: 11852

Answers (3)

Jens van de M&#246;tter
Jens van de M&#246;tter

Reputation: 940

Yes, I tried to solve the problem for a long time. Ajay's solution made me successful. For Kotlin programmers it looks like this:

btn.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, 60)

Upvotes: 0

Ajay
Ajay

Reputation: 1189

i think it might help you..

Button btn = (Button)findViewById(R.id.btn1); 

android.widget.LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,60); // 60 is height you can set it as u need

btn.setLayoutParams(lp);

Upvotes: 3

Naveen
Naveen

Reputation: 1703

you should use 

int displaywidth= getResources().getDisplayMetrics().widthPixels;    
ViewGroup.LayoutParams buttonlp= (ViewGroup.LayoutParams)f_button.getLayoutParams();
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(displaywidth, buttonlp.height);
buttonlp.setLayoutParams(params);

Instead of LinearLayout you should use the parent layout of the button if it is not LinearLayout

Upvotes: 0

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