How to create a rotation animation using ObjectAnimator in Android

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="#fffffaeb"     >     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Animate"         />     <TextView         android:id="@+id/tv"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="CIRCLE"         android:background="@drawable/rounded_bg"         android:gravity="center"         android:elevation="5dp"         android:translationZ="5dp"         android:height="100dp"         android:width="100dp"         android:layout_below="@id/btn"         android:layout_marginTop="25dp"         /> </RelativeLayout>
res/drawable/rounded_bg.xml 
 <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android">     <item>         <shape android:shape="oval">             <solid android:color="#ffff0008"/>             <size android:height="10dp" android:width="10dp"/>             <stroke                 android:color="#ffcd0317"                 android:width="3dp"                 android:dashGap="15dp"                 android:dashWidth="25dp"                 />         </shape>     </item> </selector>
MainActivity.java 
 package com.cfsuman.me.androidcodesnippets;  import android.os.Bundle; import android.app.Activity; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.animation.ObjectAnimator;  public class MainActivity extends Activity{      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          Button btn = (Button) findViewById(R.id.btn);         simpulan TextView tv = (TextView) findViewById(R.id.tv);          btn.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 ObjectAnimator anim = ObjectAnimator.ofFloat(tv,"rotation",270);                 anim.setDuration(3000);                 anim.start();             }         });    } }
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