android - Always position "GOT IT" button of MaterialShowcaseView on the bottom left corner of the screen -

i'm using following library: https://github.com/deano2390/materialshowcaseview i've been trying find way (for 2 days straight!) position "got it" button on bottom left corner of screen. how achieve , effectively?

i accept working answer. can see, have history of accepting answers.

with osama's answer, error:

com.example.me.myapplication e/androidruntime: fatal exception: main     process: com.example.me.myapplication, pid: 4445     java.lang.illegalstateexception: cannot start animator on detached view!         @ android.view.rendernode.addanimator(rendernode.java:812)         @ android.view.rendernodeanimator.settarget(rendernodeanimator.java:300)         @ android.view.rendernodeanimator.settarget(rendernodeanimator.java:282)         @ android.animation.revealanimator.<init>(revealanimator.java:37)         @ android.view.viewanimationutils.createcircularreveal(viewanimationutils.java:55)         @ uk.co.deanwild.materialshowcaseview.circularrevealanimationfactory.animateinview(circularrevealanimationfactory.java:29)         @ uk.co.deanwild.materialshowcaseview.materialshowcaseview.animatein(materialshowcaseview.java:825)         @ uk.co.deanwild.materialshowcaseview.materialshowcaseview$1.run(materialshowcaseview.java:794)         @ android.os.handler.handlecallback(handler.java:739)         @ android.os.handler.dispatchmessage(handler.java:95)         @ android.os.looper.loop(looper.java:148)         @ android.app.activitythread.main(activitythread.java:5417)         @ java.lang.reflect.method.invoke(native method)         @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:726)         @ com.android.internal.os.zygoteinit.main(zygoteinit.java:616) 

mainactivity:

package com.example.me.myapplication;  import android.support.v7.app.appcompatactivity; import android.os.bundle;  import uk.co.deanwild.materialshowcaseview.materialshowcaseview;   public class mainactivity extends appcompatactivity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          // single example         new materialshowcaseview.builder(this)                 .settarget(findviewbyid(r.id.hi))                 .setdismisstext("got it")                 .setcontenttext("this amazing feature should know about! indeed, example of bug can fixed!")                 .show();      } } 

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context="com.example.me.myapplication.mainactivity">      <textview         android:id="@+id/hi"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="hello world!"         app:layout_constraintbottom_tobottomof="parent"         app:layout_constraintleft_toleftof="parent"         app:layout_constraintright_torightof="parent"         app:layout_constrainttop_totopof="parent"         app:layout_constraintvertical_bias="0.419" />  </android.support.constraint.constraintlayout> 

this lib based on showcaseview, take @ it.

you can go showcase_content.xml @ library module , put tv_dismiss "got it" textview relativelayout this:

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/content_box"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical"     android:padding="16dp"     android:weightsum="1">      <textview         android:id="@+id/tv_title"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_marginbottom="15dp"         android:paddingleft="5dp"         android:textcolor="@android:color/white"         android:textsize="30dp" />      <textview         android:id="@+id/tv_content"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:paddingleft="5dp"         android:textcolor="@android:color/white"         android:textsize="20dp" />      <relativelayout         android:layout_width="match_parent"         android:layout_height="0dp"         android:layout_weight="1">          <textview             android:id="@+id/tv_dismiss"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_gravity="center"             android:layout_margintop="20dp"             android:background="?android:attr/selectableitembackground"             android:clickable="true"             android:layout_alignparentbottom="true"             android:paddingbottom="10dp"             android:paddingleft="5dp"             android:paddingright="5dp"             android:paddingtop="10dp"             android:textcolor="@android:color/white"             android:textsize="22dp"             android:visibility="gone" />     </relativelayout>  </linearlayout> 

go materialshowcaseview.java , empty applylayoutparams() method , update setdelay 1000