使用wrap_content在textview上设置顶部，底部填充

Question

  viewParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
            viewParams.setMargins(15, 15, 15, 0);
  TextView text = new TextView(mContext);
  text.setLayoutParams(viewParams);
  text.setGravity(Gravity.CENTER_VERTICAL);
  text.setPadding(50,50,50,50);
  text.setBackground(mContext.getResources().getDrawable(R.drawable.exp_comments));

I want my textview to have top and bottom padding. I set background with green-rectangular border around the textview.

I set height with wrap_content. and it means that the border is just above the text. I want to increase the top and bottom gap between the border and the text. So, I tried with setPadding() and setPaddingRelative() method. But it doesn't work....

Answer 1

The setPadding method values is in pixels. You should convert your dp to pixels and then set the padding.

int valueInDp = 50;
Resources r = getResources();
int px = (int) TypedValue
    .applyDimension(TypedValue.COMPLEX_UNIT_DIP, valueInDp, r.getDisplayMetrics());
text.setPadding(px,px,px,px);

Answer 2

更改顶部和底部填充，

    text.setPadding(50,100,50,100);