re-setting a TextView height programmatically

Question

I want to reset a textView height after I have added it to the main window in the xml file.

inside a RelativeLayout,

  <TextView
      android:id="@+id/text_l"
      android:layout_width="50sp"
      android:layout_height="50sp"
      android:layout_alignParentTop="true"
      android:layout_centerHorizontal="true"
      android:layout_marginLeft="10sp"
      android:layout_marginTop="145dp"
      android:gravity="center"
      android:textAppearance="?android:attr/textAppearanceLarge"
      android:textColor="#000000" >
  </TextView>

I just want to change it from 50 to 70:

I tried:

 TextView text = (TextView)findViewById(R.id.text_l);
 text.setHeight(70);

but nothing changed.

Answer 1

You should change it via LayoutParams:

LayoutParams params = (LayoutParams) textView.getLayoutParams();
params.height = 70;
textView.setLayoutParams(params);

EDIT

You should not use sizes in pixels in you code, use dimensions for this:

dimens.xml:

<dimen name="text_view_height">50dp</dimen>

In code:

params.height = getResources().getDimensionPixelSize(R.dimen.text_view_height);

Answer 2

Pragmatically you can set textview height like:

private TextView mTxtView;
int height = 50; //your textview height
mTxtView.getLayoutParams().height = height;