Add alwaysShowIndicator attr support

[almozavr]

With alwaysShowIndicator="true" floating marker should stay on screen and don't dismiss until unset programatically. Possible solution by @AnderWeb as discussed here:

The "proper" solution would be making DiscreteSeekBar extend from ViewGroup. Then, if the alwaysShowIndicator flag is enabled, it would create and add the Floater to itself taking care of measuring/layout/positioning. Else, it would behave as usual, creating the Popup with the Floater inside.

[skywalkerlw]

+1

[kevin1404]

That would be great!

[andreibalmos]

Hey guys, is there any progress being made? This would be an awesome feature.

[sendtion]

that is great.

[jonasmedeiros]

@AnderWeb Why dont you merge? I need this feature.

[jonasmedeiros]

Hi my only problem with this solutions is that the indicator stays above the keyboard

[vinkeSch]

@AnderWeb This feature is not done, right?

[G00fY2]

A quick workaround I am using is to force the pressed state. This causes the ripple circle (you can change its color) to show too but I can live with that solution:

public class PressedDiscreteSeekBar extends DiscreteSeekBar {

  public PressedDiscreteSeekBar(Context context) {
    super(context);
    drawableStateChanged();
  }

  public PressedDiscreteSeekBar(Context context, AttributeSet attrs) {
    super(context, attrs);
    drawableStateChanged();
  }

  public PressedDiscreteSeekBar(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    drawableStateChanged();
  }

  protected void drawableStateChanged() {
    super.setPressed(true);
    super.drawableStateChanged();
  }
}