title: Why does bringToFront works only once
body: <p>bringToFront works once and after that it no longer works. Why?
  when you click once it brings that view to front but when you try to bring back the view it no longer works . The touches/clicks work fine all the time.</p>
  
  <pre><code>    View view1,view2,view3,view4; 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      //sets the Bundle  
  
      //code to initiate and putting the views in layout 
      view1= findViewById(R.id.button1);
      view2= findViewById(R.id.button2);
  
      view1.setOnClickListener(new OnClickListener() {
  
          @Override
          public void onClick(View arg0) {
              // TODO Auto-generated method stub
              Log.i("onClick","1");
              view1.bringToFront();
              view1.invalidate(); 
              view2.invalidate(); 
          }
      });     
      view2.setOnClickListener(new OnClickListener() {
  
          @Override
          public void onClick(View arg0) {
              // TODO Auto-generated method stub
              Log.i("onClick","2");
              view2.bringToFront(); 
              view1.invalidate(); 
              view2.invalidate(); 
          }
      });
  }       
  </code></pre>
  
  <p>this is the xml</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:paddingBottom="@dimen/activity_vertical_margin"
      android:paddingLeft="@dimen/activity_horizontal_margin"
      android:paddingRight="@dimen/activity_horizontal_margin"
      android:paddingTop="@dimen/activity_vertical_margin"
      tools:context=".MainActivity" &gt;
  
  
      &lt;TextView
          android:id="@+id/button2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginTop="16dp"
          android:layout_marginLeft="30dp"
          android:text="Button2ButtonButton"
          android:textColor="#00ff00"
          android:textSize="60dp" /&gt;
  
      &lt;TextView
          android:id="@+id/button1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginTop="16dp"
          android:layout_marginLeft="170dp"
          android:text="Button1ButtonButton"
          android:textColor="#ff0000"
          android:textSize="60dp" /&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>