12.23

<scale xmlns:android="http://schemas.android.com/apk/res/android"

    android:fromXScale="1.0"

    android:toXScale="2.0"

    android:fromYScale="1.0"

    android:toYScale="2.0"

    android:pivotX="50%"

    android:pivotY="50%"

    android:duration="1000"

    android:repeatCount="infinite"

    android:repeatMode="reverse" />

package com.example.myapp;

 

import android.os.Bundle;

import android.view.animation.Animation;

import android.view.animation.AnimationUtils;

import android.widget.ImageView;

 

import androidx.appcompat.app.AppCompatActivity;

 

public class MainActivity extends AppCompatActivity {

 

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

 

        ImageView imageView = findViewById(R.id.imageView);

        Animation animation = AnimationUtils.loadAnimation(this, R.anim.scale_animation);

        imageView.startAnimation(animation);

    }

}

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

 

    <ImageView

        android:id="@+id/imageView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:src="@drawable/ic_android" />

 

</RelativeLayout>