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Android QuickAction popover always displayed on left of the screen
public class HelpButton extends Button {
  public HelpButton(Context c, AttributeSet attrs) {
    super(c, attrs);
    setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        QuickAction popover = new QuickAction(getContext());
        ActionItem callout = new ActionItem();
        callout.setTitle(v.getTag().toString());
        popover.addActionItem(callout);
        popover.show(v);
      }
    });
  }
}