title: Button is not clickable after TranslateAnimation
body: <p>I'm trying to move button (with animation) upon click. I want it to move 100 pixels to the bottom on first click, 100 pixels up on second, 100 pixels to the bottom on third and so on.
  I have simple layout file (main.xml):</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;Button xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/button"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:text="Press to begin animation" /&gt;
  </code></pre>
  
  <p>My launching activity is as follows:</p>
  
  <pre><code>public class TestActivity extends Activity {
  public final String TAG="TestActivity";
  boolean toTop=false;
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main); 
      Button b=(Button)findViewById(R.id.button);
      b.setOnClickListener(new OnClickListener() {
  
          public void onClick(View v) {
              Toast.makeText(TestActivity.this, "left="+v.getLeft()+"\nright="+v.getRight(), Toast.LENGTH_SHORT).show();
  
              Animation translateAnimation;
              if(toTop) translateAnimation=new TranslateAnimation(0, 0, 0, -100); 
              else translateAnimation=new TranslateAnimation(0, 0, 0, 100);
              translateAnimation.setDuration(1000);
              translateAnimation.setFillEnabled(true);
              translateAnimation.setFillAfter(true);
  
              v.startAnimation(translateAnimation);
              toTop=!toTop;
          }
      });
  }
  }
  </code></pre>
  
  <p>When I press the button, I can see it moving to the bottom. But when I press it for the second time, nothing happens. I have to click to initial rectangle of the button to begin animation again. It seems like button is drawn as expected, but actual view is remained on the same position. I want to know how I can move a view entirely, not just its visual part. 
  Besides, I use Toast.maketext.show to ensure that coordinates of the button aren't changed from click to click.</p>