Android create TextView programmatically

TextView tv1: change text size, color, background color; handle click and long click event.
tv2: center text horizontally and vertically; set bold or italic; set line space; set multiline.
tv3, tv4: two TextViews side by side, in one line.
tv5: make rounded corner TextView, and draw border.
tv6: make links in the TextView clickable.

  1. Android Create Text example

    //package com.example.view_textview;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.Typeface;
import android.graphics.drawable.GradientDrawable;
import android.os.Bundle;
import android.text.util.Linkify;
import android.view.Gravity;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class MainActivity extends Activity {
    @Override protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
        LinearLayout layout = new LinearLayout(this);
        // vertical orientation, vertical list of TextView
        layout.setOrientation(LinearLayout.VERTICAL);
        setContentView(layout, lp);

        // color, size, background color
        TextView tv1= new TextView(this);
        lp=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        tv1.setText("tv1: click me");
        tv1.setTextColor(Color.BLUE);
        tv1.setBackgroundColor(Color.LTGRAY);
        tv1.setTextSize(20.0f);
        layout.addView(tv1,lp);
        
        // add click or tap
        tv1.setOnClickListener(new View.OnClickListener() {
            @Override public void onClick(View v) {
                ((TextView)v).setText("tv1: clicked");
            }
        });
        tv1.setOnLongClickListener(new View.OnLongClickListener() {
            @Override public boolean onLongClick(View v) {
                ((TextView)v).setText("tv1: long clicked");
                return true;
            }
        });

        // Multiline, line space, padding, gravity, bold, italic
        TextView tv2= new TextView(this);
        lp=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
                200);
        tv2.setText("t2: Text - Center + Padding\nsecond line");
        tv2.setSingleLine(false);
        tv2.setMaxLines(2);
        tv2.setLineSpacing(-6.0f, 1.0f);
        tv2.setTextColor(0xffffff00);
        tv2.setBackgroundColor(Color.GRAY);
        tv2.setTextSize(18.0f);
        // set text NORMAL, BOLD, ITALIC, BOLD_ITALIC
        tv2.setTypeface(null, Typeface.ITALIC);
        //center text horizontally and vertically
        tv2.setGravity(Gravity.CENTER);
        tv2.setPadding(0,5,0,25);
        layout.addView(tv2,lp);

        //* Two textviews side by side, in one line
        LinearLayout ll = new LinearLayout(this);
        lp=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        layout.addView(ll, lp);

        TextView tv3= new TextView(this);
        lp=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        tv3.setText("tv3: text ...");
        tv3.setBackgroundColor(Color.LTGRAY);
        ll.addView(tv3,lp);

        TextView tv4= new TextView(this);
        lp=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        tv4.setText("tv4: text ...");
        tv4.setTextColor(Color.WHITE);
        tv4.setBackgroundColor(Color.BLACK);
        ll.addView(tv4,lp);

        // Rounded corner, corner radius, draw border
        TextView tv5= new TextView(this);
        RelativeLayout.LayoutParams rlp=new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        rlp.leftMargin=50;
        rlp.topMargin=50;
        tv5.setText("tv5: rounded corner, Border");
        tv5.setTextColor(Color.BLUE);
        tv5.setPadding(20,20,20,20);
        GradientDrawable shape = new GradientDrawable();
        shape.setCornerRadius(10f);
        shape.setColor(Color.LTGRAY);
        shape.setStroke(6, Color.RED);
        tv5.setBackground(shape);
        layout.addView(tv5,rlp);

        // Make links clickable
        TextView tv6= new TextView(this);
        rlp=new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                RelativeLayout.LayoutParams.WRAP_CONTENT);
        rlp.leftMargin=50;
        rlp.topMargin=50;
        tv6.setText("Website: www.yahoo.com\n\nTel:91234567");
        tv6.setTextColor(Color.BLUE);
        tv6.setBackgroundColor(Color.LTGRAY);
        Linkify.addLinks(tv6, Linkify.WEB_URLS|Linkify.PHONE_NUMBERS);
        layout.addView(tv6,rlp);

    }
}