Detailed explanation of the example of dynamically adding RaidoButton in Android ListView

<RelativeLayout xmlns:andro 
  xmlns:tools="/tools" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" > 
 
   <ListView android:   
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"/>  
 
</RelativeLayout> 

public class TestActivity extends Activity { 
   
   //Initialize character array: arrayValue is used to store the key value obtained in the database, arrayText is used to store the Value value obtained in the database   String[] arrayValue; 
   String[] arrayText; 
    
  @Override 
  public void onCreate(Bundle savedInstanceState) { 
    (savedInstanceState); 
    setContentView(.activity_test_item);     
     
    // Ensure thread safety and prevent multiple threads from running simultaneously    (new () 
    .detectDiskReads() 
    .detectDiskWrites() 
    .detectAll()   
    .build()); 
     
    //Initialize DBHelper     final DBHelper dbHelper = new DBHelper(this); 
     //Query business type statement     String sql = "select * from t_Test";   
     final Cursor cur = (sql); 
      
    // Prevent no data errors in the database    if (cur != null && () > 0) { 
      arrayText = new String[()]; 
      arrayValue = new String[()]; 
      // Move to the first record      (); 
      int i = 0; 
      int index = 0; 
      // Iterate over Cursor and add data to the array      while (!()) { 
        index = ("Column name to be found"); 
        arrayText[i] = (index); 
        index = ("id"); 
        arrayValue[i] = (index); 
        i++; 
        (); // Move to the next record      } 
    } 
       
      String[] contentString = arrayText; 
      //Create a listview adapter to store the obtained radiobutton      ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>( this,  
          .simple_list_item_single_choice,  
          contentString);  
      ListView mylist = (ListView)findViewById(.ListView01);  
      (arrayAdapter);     
       
      //radiobutton listens for events      (new OnItemClickListener() { 
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
            long arg3) {           
          //Pass the value of the selected radiobutton into the entity class ApplicationData           =arrayValue[arg2]; 
           
        } 
      });  
      //Set selection mode: radio select mode      (ListView.CHOICE_MODE_SINGLE);  
  
  } 
 
  @Override 
  public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(.activity_business_item, menu); 
    return true; 
  }   
}