在代码中将widget/TextView动态添加到RelativeLayout

Posted 2021-02-24

This example adds a horizontally-centered TextView to the bottom of the RelativeLayout called 'layout'.

TextView tv = new TextView(this);
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
tv.setLayoutParams( layoutParams );
tv.setText(getString(R.string.loading));
tv.setGravity(Gravity.CENTER_HORIZONTAL);
layout.addView(tv);