Last post show a DIY 3D Hologram Projector for smartphone to view 3D Hologram Video in YouTube. Here I try to simulate the effect in Android App.

MainActivity.java

package com.blogspot.android_er.androidmirror;

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

public class MainActivity extends AppCompatActivity {

 ImageView image2, image4, image6, image8;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 image2 = (ImageView)findViewById(R.id.image2);
 image4 = (ImageView)findViewById(R.id.image4);
 image6 = (ImageView)findViewById(R.id.image6);
 image8 = (ImageView)findViewById(R.id.image8);

 image2.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 flipX();
 }
 });

 image4.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 flipY();
 }
 });

 image6.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 flipY();
 }
 });

 image8.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 flipX();
 }
 });
 }

 private void flipX(){
 ObjectAnimator flip2 = ObjectAnimator.ofFloat(image2, "rotationX", 0f, 360f);
 ObjectAnimator flip4 = ObjectAnimator.ofFloat(image6, "rotationY", 0f, 360f);
 ObjectAnimator flip6 = ObjectAnimator.ofFloat(image4, "rotationY", 0f, -360f);
 ObjectAnimator flip8 = ObjectAnimator.ofFloat(image8, "rotationX", 0f, -360f);
 flip2.setDuration(3000);
 flip4.setDuration(3000);
 flip6.setDuration(3000);
 flip8.setDuration(3000);
 flip2.start();
 flip4.start();
 flip6.start();
 flip8.start();
 }


 private void flipY(){
 ObjectAnimator flip2 = ObjectAnimator.ofFloat(image2, "rotationY", 0f, 360f);
 ObjectAnimator flip4 = ObjectAnimator.ofFloat(image6, "rotationX", 0f, 360f);
 ObjectAnimator flip6 = ObjectAnimator.ofFloat(image4, "rotationX", 0f, -360f);
 ObjectAnimator flip8 = ObjectAnimator.ofFloat(image8, "rotationY", 0f, -360f);
 flip2.setDuration(3000);
 flip4.setDuration(3000);
 flip6.setDuration(3000);
 flip8.setDuration(3000);
 flip2.start();
 flip4.start();
 flip6.start();
 flip8.start();
 }
}

layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
 
 
 android_layout_width="match_parent"
 android_layout_height="match_parent"
 android_padding="16dp"
 android_background="@android:color/black"
 tools_context=".MainActivity">

 <TextView
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"
 android_autoLink="web"
 android_text="http://android-er.blogspot.com/"
 android_textStyle="bold"
 android_layout_alignParentTop="true"/>

 <GridLayout
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"
 android_columnCount="3"
 android_layout_centerInParent="true">
 <ImageView
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"/>
 <ImageView
 android_id="@+id/image2"
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"
 android_src="@drawable/androider"
 android_layout_gravity="center"/>
 <ImageView
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"/>
 <ImageView
 android_id="@+id/image4"
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"
 android_src="@drawable/androider"
 android_layout_gravity="center"
 android_rotation="270"/>
 <ImageView
 android_layout_width="20mm"
 android_layout_height="20mm"/>
 <ImageView
 android_id="@+id/image6"
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"
 android_src="@drawable/androider"
 android_layout_gravity="center"
 android_rotation="90"/>
 <ImageView
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"/>
 <ImageView
 android_id="@+id/image8"
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"
 android_src="@drawable/androider"
 android_layout_gravity="center"
 android_rotation="180"/>
 <ImageView
 android_layout_width="wrap_content"
 android_layout_height="wrap_content"/>

 </GridLayout>
</RelativeLayout>

Where "@drawable/androider" is a 100x100 PNG with alpha channel.

Next:
- Animated GIF (Androidify) for 3D Hologram viewer

Read More..

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 
 
 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 the files (Android Studio Format) .

Download the demo APK.

---

~ Old example of Various effect of interpolator in Android Animation

Read More..