How to create scale animation in android

In this android programming source code example, we are going to create scale animation in android.

You can copy and adopt this source code example to your android project without reinventing the wheel.

Below is a step by step source code to create scale animation in android.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Scale Animation"
        android:layout_gravity="center_horizontal"
        android:textSize="20sp"/>

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/notebook"
        android:id="@+id/image"/>

</LinearLayout>

MainActivity.java

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;


public class Animation10 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_animation10);

        final ImageView imageView = findViewById(R.id.image);
        final Animation scaleAnimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.scale);
        imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                imageView.startAnimation(scaleAnimation);
            }
        });

    }
}

anim/scale.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale xmlns:android="http://schemas.android.com/apk/res/android"
        android:fromXScale="0"
        android:toXScale="1"
        android:fromYScale="0"
        android:toYScale="1"
        android:duration="1000"
        android:pivotX="50%"
        android:pivotY="50%" />

</set>

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