MarkerView goes out of the chart for the last point on the chart

Since

android:clipChildren="false"
android:clipToPadding="false"

did not work for me, I ended up creating 3 different drawables. Depending on the Entry index, I use one or the other. And, in order to keep the arrow centered, the XOffset changes accordingly. I guess it's a very specific solution, but the idea is exportable

  @Override
  public void refreshContent(Entry e, int dataSetIndex) {
    if (e.getXIndex() < 4) {
      xOffsetMultiplier = 3.2f;
      tvContent.setBackgroundResource(R.drawable.stats_marker_left_side);
    } else if (e.getXIndex() > mTimestamps.length - 6) {
      //timestamps is an array containing xValues timestamps
      xOffsetMultiplier = 1.12f;
      tvContent.setBackgroundResource(R.drawable.stats_marker_right_side);
    } else {
      xOffsetMultiplier = 2;
      tvContent.setBackgroundResource(R.drawable.stats_marker);
    }

    tvContent.setText(createMarkerViewText(e));
  }

  @Override
  public int getXOffset() {
    // this will center the marker-view horizontally
    return (int) -(getWidth() / xOffsetMultiplier);
  }

This is the result

The drawables are copied from MPAndroidChart samples, transformed to 9.patch and adapted to my needs. Place them inside drawable-nodpi

A bit late, but here is my easy solution for this problem.

You need to Override the draw method of your custom MarkerView.

You just have then to control that you posx is not going to close from one of your border (from 0 for the right side to location depending on your screen size, as an example 300 for my own screen).

A simple example:

@Override
        public void draw(Canvas canvas, float posx, float posy)
        {
            // take offsets into consideration
            posx += getXOffset();
            posy=0;

            // AVOID OFFSCREEN
            if(posx<45)
                posx=45;
            if(posx>265)
                posx=265;

            // translate to the correct position and draw
            canvas.translate(posx, posy);
            draw(canvas);
            canvas.translate(-posx, -posy);
        }

Here, I can control my x position while ensuring that the marker remain always on the top of the graph (If you dont want it, use posy += getYOffset(); instead)

I have found a simple solution to this issue. You need to set chart in your custom marker view as below:

setChartView(chart);

..and override the draw method as below:

@Override
public void draw(Canvas canvas, float posX, float posY) {
    super.draw(canvas, posX, posY);
    getOffsetForDrawingAtPoint(posX, posY);
}