title: MPAndroidChart onValueSelected icon only
body: <p>I'm using MPAndroidChart (<a href="https://github.com/PhilJay/MPAndroidChart" rel="nofollow noreferrer">https://github.com/PhilJay/MPAndroidChart</a>) library to draw a simple line chart, where I have a line connected by points (values) represented as icons. </p>
  
  <p>I'm using OnChartValueSelectedListener:</p>
  
  <pre><code>//initialization
  mChart.setOnChartValueSelectedListener(this);
  
  //later in class
  public void onValueSelected(Entry e, Highlight h){
      Log.i(TAG, "Something selected.");
  }
  
  @Override
  public void onNothingSelected() {
      Log.i(TAG, "Nothing selected.");
  }
  </code></pre>
  
  <p>But in my case, almost always I'm getting onValueSelected instead of onNothingSelected, wherever I click. </p>
  
  <p>So, I'm clicking on an empty space and still I'm getting onValueSelected. The 'e' param (Entry) is the closest one to the point I clicked. </p>
  
  <p>I'm looking for a solution to detect if I really clicked on the icon on the chart or somehow change onValueSelected behavior to only be raised when I'm doing so.</p>