android - How to display custom layout in ActionBar

activity_main.xml 
 <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="10dp"     tools:context=".MainActivity"     android:background="#d0f7ff"     >     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Apply ActionBar Custom Layout"         android:layout_marginTop="10dp"         /> </RelativeLayout>
actionbar_custom_view.xml 
 <?xml version="1.0" encoding="utf-8"?> <TextView     android:id="@+id/tv"     xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:textColor="#5b82ff"     android:fontFamily="sans-serif-condensed"     android:textSize="16dp"     android:textStyle="bold"     android:shadowRadius="15"     android:shadowDx="5"     android:shadowDy="5"     android:shadowColor="#afc8ff"     />
MainActivity.java 
 package com.cfsuman.me.androidcodesnippets;  import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.GradientDrawable; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.widget.Button; import android.widget.RelativeLayout; import android.app.ActionBar; import android.widget.TextView; import android.view.LayoutInflater;   public class MainActivity extends Activity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the widgets reference from XML layout         RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);         simpulan Button btn = (Button) findViewById(R.id.btn);          btn.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View view) {                 // Get the ActionBar                 ActionBar ab = getActionBar();                  // Get the custom layout                 LayoutInflater inflater = getLayoutInflater();                 View customLayout = inflater.inflate(R.layout.actionbar_custom_view,null);                  // Get the TextView reference from custom layout                 TextView tv = (TextView)customLayout.findViewById(R.id.tv);                  // Set the custom layout TextView text                 // Set the ActionBar title text for current Activity                 tv.setText("Android Example : ActionBar Custom Layout");                  // Set the ActionBar display option                 ab.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);                  // Set the ActionBar custom layout                 ab.setCustomView(customLayout);                  // Set a solid color background for ActionBar                 //ab.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#FFF9FBFF")));            }         });     } }
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