Dynamically Create View Elements - Android Example

Ref : http://androidexample.com/Use_MVC_Pattern_To_Create_Very_Basic_Shopping_Cart__-_Android_Example/Dynamically_Create_View_Elements__-_Android_Example/index.php?view=article_discription&aid=115&aaid=137

In this example creating some UI elements on screen on run time. Creating textview , buttons dynamically and creating onclick listener for buttons. After click on button show index(id). 

File : src/GlobalClass.java

package com.androidexample.dynamicallycreateelements;   import android.os.Bundle; import android.app.Activity; import android.app.ActionBar.LayoutParams; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.LinearLayout; import android.widget.TextView;   public class MainActivity extends Activity {       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.dynamically_create_view_element);                   final LinearLayout lm = (LinearLayout) findViewById(R.id.linearMain);                   // create the layout params that will be used to define how your         // button will be displayed         LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(                 LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);                   //Create four         for(int j=0;j<=4;j++)         {               // Create LinearLayout             LinearLayout ll = new LinearLayout(this);             ll.setOrientation(LinearLayout.HORIZONTAL);                           // Create TextView             TextView product = new TextView(this);             product.setText(" Product"+j+"    ");             ll.addView(product);                           // Create TextView             TextView price = new TextView(this);             price.setText("  $"+j+"     ");             ll.addView(price);                           // Create Button             final Button btn = new Button(this);                 // Give button an ID                 btn.setId(j+1);                 btn.setText("Add To Cart");                 // set the layoutParams on the button                 btn.setLayoutParams(params);                                   final int index = j;                 // Set click listener for button                 btn.setOnClickListener(new OnClickListener() {                     public void onClick(View v) {                                                   Log.i("TAG", "index :" + index);                                                   Toast.makeText(getApplicationContext(),                                 "Clicked Button Index :" + index,                                 Toast.LENGTH_LONG).show();                                               }                 });                                  //Add button to LinearLayout                 ll.addView(btn);                //Add button to LinearLayout defined in XML                 lm.addView(ll);          }     } }