Monday, October 19, 2015

Interpolator effect on ObjectAnimator


This post demo various Interpolator effect on ObjectAnimator. You can also download the demo APK, from the link on the bottom.


MainActivity.java
package com.blogspot.android_er.androidobjectanimator;

import android.animation.ObjectAnimator;
import android.animation.TimeInterpolator;
import android.os.Bundle;
import android.support.v4.view.animation.FastOutLinearInInterpolator;
import android.support.v4.view.animation.FastOutSlowInInterpolator;
import android.support.v4.view.animation.LinearOutSlowInInterpolator;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.AnticipateInterpolator;
import android.view.animation.AnticipateOvershootInterpolator;
import android.view.animation.BounceInterpolator;
import android.view.animation.CycleInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.LinearInterpolator;
import android.view.animation.OvershootInterpolator;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    LinearLayout playGround;
    ImageView image;

    AccelerateDecelerateInterpolator accelerateDecelerateInterpolator;
    AccelerateInterpolator accelerateInterpolator;
    AnticipateInterpolator anticipateInterpolator;
    AnticipateOvershootInterpolator anticipateOvershootInterpolator;
    BounceInterpolator bounceInterpolator;
    CycleInterpolator cycleInterpolator;
    DecelerateInterpolator decelerateInterpolator;
    FastOutLinearInInterpolator fastOutLinearInInterpolator;
    FastOutSlowInInterpolator fastOutSlowInInterpolator;
    LinearInterpolator linearInterpolator;
    LinearOutSlowInInterpolator linearOutSlowInInterpolator;
    OvershootInterpolator overshootInterpolator;

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

        playGround = (LinearLayout)findViewById(R.id.playground);
        image = (ImageView)findViewById(R.id.image);
        image.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "Clicked!", Toast.LENGTH_SHORT).show();
            }
        });

        Button btnNull = (Button)findViewById(R.id.bNull);
        btnNull.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(null);
            }
        });

        Button btnAccelerateDecelerateInterpolator
                = (Button)findViewById(R.id.bAccelerateDecelerateInterpolator);
        btnAccelerateDecelerateInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(accelerateDecelerateInterpolator);
            }
        });

        Button btnAccelerateInterpolator = (Button)findViewById(R.id.bAccelerateInterpolator);
        btnAccelerateInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(accelerateInterpolator);
            }
        });

        Button btnAnticipateInterpolator = (Button)findViewById(R.id.bAnticipateInterpolator);
        btnAnticipateInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(anticipateInterpolator);
            }
        });

        Button btnAnticipateOvershootInterpolator
                = (Button)findViewById(R.id.bAnticipateOvershootInterpolator);
        btnAnticipateOvershootInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(anticipateOvershootInterpolator);
            }
        });

        Button btnBounceInterpolator = (Button)findViewById(R.id.bBounceInterpolator);
        btnBounceInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(bounceInterpolator);
            }
        });

        Button btnCycleInterpolator = (Button)findViewById(R.id.bCycleInterpolator);
        btnCycleInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(cycleInterpolator);
            }
        });

        Button btnDecelerateInterpolator = (Button)findViewById(R.id.bDecelerateInterpolator);
        btnDecelerateInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(decelerateInterpolator);
            }
        });

        Button btnFastOutLinearInInterpolator
                = (Button)findViewById(R.id.bFastOutLinearInInterpolator);
        btnFastOutLinearInInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(fastOutLinearInInterpolator);
            }
        });

        Button btnFastOutSlowInInterpolator
                = (Button)findViewById(R.id.bFastOutSlowInInterpolator);
        btnFastOutSlowInInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(fastOutSlowInInterpolator);
            }
        });

        Button btnLinearInterpolator = (Button)findViewById(R.id.bLinearInterpolator);
        btnLinearInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(linearInterpolator);
            }
        });

        Button btnOvershootInterpolator = (Button)findViewById(R.id.bOvershootInterpolator);
        btnOvershootInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(overshootInterpolator);
            }
        });

        Button btnLinearOutSlowInInterpolator
                = (Button)findViewById(R.id.bLinearOutSlowInInterpolator);
        btnLinearOutSlowInInterpolator.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                prepareObjectAnimator(linearOutSlowInInterpolator);
            }
        });

        prepareInterpolator();
    }

    private void prepareInterpolator(){
        accelerateDecelerateInterpolator = new AccelerateDecelerateInterpolator();
        accelerateInterpolator = new AccelerateInterpolator();
        anticipateInterpolator = new AnticipateInterpolator();
        anticipateOvershootInterpolator = new AnticipateOvershootInterpolator();
        bounceInterpolator = new BounceInterpolator();
        cycleInterpolator = new CycleInterpolator(2);
        decelerateInterpolator = new DecelerateInterpolator();
        fastOutLinearInInterpolator = new FastOutLinearInInterpolator();
        fastOutSlowInInterpolator = new FastOutSlowInInterpolator();
        linearInterpolator = new LinearInterpolator();
        linearOutSlowInInterpolator = new LinearOutSlowInInterpolator();
        overshootInterpolator = new OvershootInterpolator();
    }

    private void prepareObjectAnimator(TimeInterpolator timeInterpolator){
        //float w = (float)playGround.getWidth();
        float h = (float)playGround.getHeight();
        float propertyStart = 0f;
        float propertyEnd = -(h/2 - (float)image.getHeight()/2);
        String propertyName = "translationY";
        ObjectAnimator objectAnimator
                = ObjectAnimator.ofFloat(image, propertyName, propertyStart, propertyEnd);
        objectAnimator.setDuration(2000);
        objectAnimator.setRepeatCount(1);
        objectAnimator.setRepeatMode(ObjectAnimator.REVERSE);
        objectAnimator.setInterpolator(timeInterpolator);
        objectAnimator.start();
    }
}


layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:padding="16dp"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:autoLink="web"
            android:text="http://android-er.blogspot.com/"
            android:textStyle="bold" />

        <LinearLayout
            android:id="@+id/playground"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="10dp"
            android:background="#E0E0E0"
            android:gravity="center"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/image"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:src="@mipmap/ic_launcher" />
        </LinearLayout>
    </LinearLayout>

    <ScrollView
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <Button
                android:id="@+id/bNull"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Interpolator = null (LinearInterpolator)"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bAccelerateDecelerateInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="AccelerateDecelerateInterpolator (default)"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bAccelerateInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="AccelerateInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bAnticipateInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="AnticipateInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bAnticipateOvershootInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="AnticipateOvershootInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bBounceInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="BounceInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bCycleInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="CycleInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bDecelerateInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="DecelerateInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bFastOutLinearInInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="FastOutLinearInInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bFastOutSlowInInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="FastOutSlowInInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bLinearInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="LinearInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bLinearOutSlowInInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="LinearOutSlowInInterpolator"
                android:textAllCaps="false" />

            <Button
                android:id="@+id/bOvershootInterpolator"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="OvershootInterpolator"
                android:textAllCaps="false" />

        </LinearLayout>

    </ScrollView>

</LinearLayout>



download filesDownload the files (Android Studio Format) .

download filesDownload the demo APK.


~ Old example of Various effect of interpolator in Android Animation

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