Kotlin-Create TextView Programatically

Hello Friends,
      In this tutorial I am going create a textview dynamically in kotlin and add it to Linearlayout layout.

1. activity_main.xml: Following is the activity_main.xml containing the TextView with the text .

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1. <?xml version="1.0" encoding="utf-8"?>    
2.  <android.support.constraint.ConstraintLayout xmlns:android="https://schemas.android.com/apk/res/android"    
3.   xmlns:app="http://schemas.android.com/apk/res-auto"    
4.   xmlns:tools="http://schemas.android.com/tools"    
5.   android:layout_width="match_parent"    
6.   android:layout_height="match_parent"    
7.   tools:context=".TextViewSample">    
8.   <LinearLayout    
9.    android:id="@+id/ll_main_layout"    
10.    android:layout_width="match_parent"    
11.    android:layout_height="wrap_content"    
12.    android:orientation="vertical">    
13.    <TextView    
14.     android:id="@+id/tv_static"    
15.     android:layout_width="wrap_content"    
16.     android:layout_height="wrap_content"    
17.     android:textSize="20sp"    
18.     android:padding="20sp"    
19.     android:justificationMode="inter_word"    
20.     android:text="This textview is created from xml"/>    
21.   </LinearLayout>    
22.  </android.support.constraint.ConstraintLayout>  

<?xml version="1.0" encoding="utf-8"?>  
 <android.support.constraint.ConstraintLayout xmlns:android="https://schemas.android.com/apk/res/android"  
  xmlns:app="http://schemas.android.com/apk/res-auto"  
  xmlns:tools="http://schemas.android.com/tools"  
  android:layout_width="match_parent"  
  android:layout_height="match_parent"  
  tools:context=".TextViewSample">  
  <LinearLayout  
   android:id="@+id/ll_main_layout"  
   android:layout_width="match_parent"  
   android:layout_height="wrap_content"  
   android:orientation="vertical">  
   <TextView  
    android:id="@+id/tv_static"  
    android:layout_width="wrap_content"  
    android:layout_height="wrap_content"  
    android:textSize="20sp"  
    android:padding="20sp"  
    android:justificationMode="inter_word"  
    android:text="This textview is created from xml"/>  
  </LinearLayout>  
 </android.support.constraint.ConstraintLayout>

2. Creation of textview dynamically,

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1. val tv_programtically = TextView(this)  
2. tv_programtically.textSize = 20f  
3. tv_programtically.text = "This textview is an dynamic textview in kotlin"  

val tv_programtically = TextView(this)
tv_programtically.textSize = 20f
tv_programtically.text = "This textview is an dynamic textview in kotlin"

3. Finally the complete code is:

  TextViewSample.kt

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1. package com.android.developer.kotlinsample  
2.   
3. import android.support.v7.app.AppCompatActivity  
4. import android.os.Bundle  
5. import android.widget.LinearLayout  
6. import android.widget.TextView  
7. class TextViewSample : AppCompatActivity() {  
8.   
9.   override fun onCreate(savedInstanceState: Bundle?) {  
10.     super.onCreate(savedInstanceState)  
11.     setContentView(R.layout.activity_text_view_sample)  
12.   
13.     /** Dynamic creation of text view */  
14.     val tv_programtically = TextView(this)  
15.     tv_programtically.textSize = 20f  
16.     tv_programtically.text = "This textview is an dynamic textview in kotlin"  
17.     /**------end--------**/  
18.   
19.     // add TextView to LinearLayout  
20.     val ll_main_layout = findViewById(R.id.ll_main_layout) as LinearLayout  
21.     ll_main_layout.addView(tv_programtically)  
22.   }  
23. }  

package com.android.developer.kotlinsample

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.widget.LinearLayout
import android.widget.TextView
class TextViewSample : AppCompatActivity() {

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_text_view_sample)

    /** Dynamic creation of text view */
    val tv_programtically = TextView(this)
    tv_programtically.textSize = 20f
    tv_programtically.text = "This textview is an dynamic textview in kotlin"
    /**------end--------**/

    // add TextView to LinearLayout
    val ll_main_layout = findViewById(R.id.ll_main_layout) as LinearLayout
    ll_main_layout.addView(tv_programtically)
  }
}

Hope this will help some one. Enjoy Coding.... :)