Code Tutorial #004

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    android:id="@+id/layout"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/disk_view"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_marginTop="20dp"
        android:layout_centerHorizontal="true"
        app:srcCompat="@drawable/disk" />

    <ImageView
        android:id="@+id/ground_view"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_alignParentBottom="true"
        app:srcCompat="@drawable/ground" />

</RelativeLayout>

 

MainActivity.java:

import androidx.appcompat.app.AppCompatActivity;

import android.animation.Animator;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.ViewPropertyAnimator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.BounceInterpolator;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    ImageView mDisk, mGround;

    MediaPlayer mp;

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

        mGround = findViewById(R.id.ground_view);
        mDisk = findViewById(R.id.disk_view);

        mp = MediaPlayer.create(this, R.raw.fall);

        mDisk.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                animateFall();
            }
        });
    }

    private void animateFall() {
        float newY = mGround.getY() - mDisk.getHeight()/2 - mGround.getHeight() - 10;

        ViewPropertyAnimator animator = mDisk.animate()
                .translationY(newY)
                .setInterpolator(new AccelerateInterpolator())
                .setInterpolator(new BounceInterpolator())
                .setDuration(2000);

        animator.setListener(new Animator.AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animation) {
                mp.start();
            }

            @Override
            public void onAnimationEnd(Animator animation) {
                Toast.makeText(MainActivity.this, "It Ended", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onAnimationCancel(Animator animation) {

            }

            @Override
            public void onAnimationRepeat(Animator animation) {

            }
        });
        animator.start();
    }
}

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