Develop Reference

expand/collapse Animation Android half view

I would like to expand/collapse an ImageView but start from 50% picture to expand at 100%, collapse to 50% not under.
I already took a look at some popular questions and answers on SO but I didn't find how to manage only half. I also want to modify on the height of view, not the width.
What I tried :
public static void expand(final View v) {
v.measure(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
final int targtetHeight = v.getMeasuredHeight();
v.getLayoutParams().height = 0;
v.setVisibility(View.VISIBLE);
Animation a = new Animation()
{
#Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
v.getLayoutParams().height = interpolatedTime == 1
? ViewGroup.LayoutParams.WRAP_CONTENT
: (int)(targtetHeight * interpolatedTime);
v.requestLayout();
}
#Override
public boolean willChangeBounds() {
return true;
}
};
a.setDuration((int)(targtetHeight / v.getContext().getResources().getDisplayMetrics().density));
v.startAnimation(a);
}
public static void collapse(final View v) {
final int initialHeight = v.getMeasuredHeight();
Animation a = new Animation() {
#Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
if (interpolatedTime == 1) {
v.setVisibility(View.VISIBLE);
} else {
v.getLayoutParams().height = initialHeight - (int) (initialHeight * interpolatedTime);
v.requestLayout();
}
}
#Override
public boolean willChangeBounds() {
return true;
}
};
a.setDuration((int) (initialHeight / v.getContext().getResources().getDisplayMetrics().density));
v.startAnimation(a);
}
as I said it's not what I want because it make disappeared totally and it change the width.
I also tried this snippet but there is no animation :
mImageDrawable = (ClipDrawable) pic.getDrawable();
mImageDrawable.setLevel(5000);//use set level to expand or collapse manually but no animation.
clip:
<?xml version="1.0" encoding="utf-8"?>
<clip xmlns:android="http://schemas.android.com/apk/res/android"
android:clipOrientation="vertical"
android:drawable="#drawable/test_pic"
android:gravity="top" />

Use Transition API which is available in support package (androidx). Just call TransitionManager.beginDelayedTransition then change height of view. TransitionManager will handle this changes and it will provide transition which will change imageView with animation.
scaleType of ImageView here is centerCrop thats why image scales when collapse and expand. Unfortunetly there is no "fill width and crop bottom" scaleType, so if you need it I think it can be done throught scaleType = matrix .
import androidx.appcompat.app.AppCompatActivity;
import androidx.transition.TransitionManager;
public class MainActivity extends AppCompatActivity {
private ImageView image;
private ViewGroup parent;
boolean collapse = true;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
image = findViewById(R.id.image);
parent = findViewById(R.id.parent);
findViewById(R.id.btn).setOnClickListener(view -> {
collapse = !collapse;
collapse();
});
}
private void collapse() {
TransitionManager.beginDelayedTransition(parent);
//change layout params
int height = image.getHeight();
LayoutParams layoutParams = image.getLayoutParams();
layoutParams.height = !collapse ? height / 2 : height * 2;
image.requestLayout();
}
}
Layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button
android:id="#+id/btn"
android:text="start"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="300dp"
android:scaleType="centerCrop"
android:src="#drawable/qwe" />
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="random text"
android:layout_margin="8dp"/>
</LinearLayout>
UPDATE:
There is beginDelayedTransition(ViewGroup, Transtion) method. beginDelayedTransition(ViewGroup) by default use AutoTransition as transition.
So if you need handle start/end of transition you can do it like this:
AutoTransition transition = new AutoTransition();
transition.addListener(new TransitionListenerAdapter(){
#Override
public void onTransitionStart(#NonNull Transition transition) {
//TODO
}
#Override
public void onTransitionEnd(#NonNull Transition transition) {
//TODO
}
});
TransitionManager.beginDelayedTransition(parent, transition);

Ring Glow Animation in Android

I'm trying to reproduce this animation from an iOS app in Android. and I'm stuck
If anyone knows how to create them will be deeply grateful. Don't mind the logo in the center, just those rings pulsating. (is possible 3 at a time, short break, repeat)
Here's a possible solution, but it's quite ugly and I'm sure something nicer can be made
3 imageviews one on top of eachother
<?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:fitsSystemWindows="true"
>
<ImageView
android:id="#+id/imageView_circle1"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
app:srcCompat="#drawable/circle"
/>
<ImageView
android:id="#+id/imageView_circle2"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
app:srcCompat="#drawable/circle"
/>
<ImageView
android:id="#+id/imageView_circle3"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
app:srcCompat="#drawable/circle"
/>
<ImageView
android:id="#+id/imageView_logo"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:scaleType="fitCenter"
app:srcCompat="#drawable/logo"
/>
</RelativeLayout>
a drawable circle.xml
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#DDDDDD"/>
</shape>
an animation zoom_and_fade.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" android:fillAfter="false">
<alpha
android:duration="3500"
android:fromAlpha="1.0"
android:toAlpha="0.0" />
<scale
android:duration="3500"
android:fromXScale="0"
android:fromYScale="0"
android:pivotX="50%"
android:pivotY="50%"
android:toXScale="50"
android:toYScale="50" />
</set>
on Activity:
imageView_circle1 = (ImageView) findViewById(R.id.imageView_circle1);
imageView_circle2 = (ImageView) findViewById(R.id.imageView_circle2);
imageView_circle3 = (ImageView) findViewById(R.id.imageView_circle3);
anim1 = AnimationUtils.loadAnimation(this, R.anim.zoom_and_fade);
anim2 = AnimationUtils.loadAnimation(this, R.anim.zoom_and_fade);
anim3 = AnimationUtils.loadAnimation(this, R.anim.zoom_and_fade);
anim2.setStartOffset(800);
anim3.setStartOffset(1600);
imageView_circle1.startAnimation(anim1);
imageView_circle2.startAnimation(anim2);
imageView_circle3.startAnimation(anim3);
anim2.setAnimationListener(new Animation.AnimationListener() {
#Override public void onAnimationStart(Animation animation) {
}
#Override public void onAnimationEnd(Animation animation) {
imageView_circle1.startAnimation(anim1);
imageView_circle2.startAnimation(anim2);
imageView_circle3.startAnimation(anim3);
}
#Override public void onAnimationRepeat(Animation animation) {
}
});

I don't think you can achieve same result with only XML.
This is really rough code (Literally 5 minutes) using canvas. But I think with some minor changes you can get really nice Animation.
Check out the video. https://www.youtube.com/watch?v=378Jjc4amD8.
I'll improve if you like it.
public class CircleAnimationView extends View {
private Paint[] paints = new Paint[3];
private int[] colors = new int[3];
private float[] circleRadius = new float[3];
public CircleAnimationView(Context context) {
super(context);
init();
}
public CircleAnimationView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
colors[0] = ContextCompat.getColor(getContext(), R.color.gray1);
colors[1] = ContextCompat.getColor(getContext(), R.color.gray2);
colors[2] = ContextCompat.getColor(getContext(), R.color.gray3);
for (int i = 0; i < paints.length; i++) {
paints[i] = new Paint();
paints[i].setAntiAlias(true);
paints[i].setStyle(Paint.Style.FILL);
paints[i].setColor(colors[i]);
}
}
public void startCircleAnimation() {
CircleRadiusAnimation animation = new CircleRadiusAnimation();
animation.setDuration(1500);
animation.setRepeatCount(Animation.INFINITE);
startAnimation(animation);
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(getWidth() / 2, getHeight() / 2, circleRadius[0], paints[0]);
canvas.drawCircle(getWidth() / 2, getHeight() / 2, circleRadius[1], paints[1]);
canvas.drawCircle(getWidth() / 2, getHeight() / 2, circleRadius[2], paints[2]);
}
private class CircleRadiusAnimation extends Animation {
public CircleRadiusAnimation() {
setAnimationListener(new AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
}
#Override
public void onAnimationRepeat(Animation animation) {
reset();
}
});
}
public void reset() {
circleRadius[0] = 0;
circleRadius[1] = 0;
circleRadius[2] = 0;
CircleAnimationView.this.requestLayout();
CircleAnimationView.this.invalidate();
}
#Override
protected void applyTransformation(float interpolatedTime, Transformation transformation) {
circleRadius[0] += 10;
if (interpolatedTime > 0.3) {
circleRadius[1] += 10;
Log.d("animate", "2nd circle");
}
if (interpolatedTime > 0.6) {
circleRadius[2] += 10;
Log.d("animate", "3nd circle");
}
CircleAnimationView.this.requestLayout();
CircleAnimationView.this.invalidate();
}
}
}}

How to fill a view with another with Material Design Animation?

I'm trying to go around different functionality integrated with Android Material Design but I can't to do this type of animation when a view fill another like that :
Do you know how to do it or a library/project an example that does this?

I tried to implement this below API 21
add gradle dependancy
dependencies {
compile 'com.github.ozodrukh:CircularReveal:1.0.6#aar'
}
My activity xml is
activity_reval_anim.xml
<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"
tools:context=".RevalAnimActivity">
<ImageView
android:id="#+id/img_top"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:background="#color/color_primary"
android:src="#drawable/ala"/>
<io.codetail.widget.RevealLinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_below="#+id/img_top"
android:background="#color/color_primary">
<LinearLayout
android:visibility="invisible"
android:id="#+id/ll_reveal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/color_accent"
android:orientation="horizontal"
></LinearLayout>
</io.codetail.widget.RevealLinearLayout>
<ImageButton
android:id="#+id/img_floating_btn"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_alignParentRight="true"
android:layout_marginRight="40dp"
android:layout_marginTop="170dp"
android:background="#drawable/expand_btn"/>
</RelativeLayout>
My Activity java is
RevalAnimActivity.java
public class RevalAnimActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_reval_anim);
final ImageButton mFloatingButton = (ImageButton) findViewById(R.id.img_floating_btn);
mFloatingButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
animateButton(mFloatingButton);
}
});
}
private void animateButton(final ImageButton mFloatingButton) {
mFloatingButton.animate().translationXBy(0.5f).translationY(150).translationXBy(-0.9f)
.translationX(-150). setDuration(300).setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
animateReavel((int) mFloatingButton.getX(), 150,mFloatingButton);
}
});
}
private void animateReavel(int cx, int cy, final ImageButton mFloatingButton) {
final View myView = findViewById(R.id.ll_reveal);
// get the final radius for the clipping circle
float finalRadius = hypo(myView.getWidth(), myView.getHeight());
SupportAnimator animator =
ViewAnimationUtils.createCircularReveal(myView, cx, cy, 0, finalRadius);
animator.addListener(new SupportAnimator.AnimatorListener() {
#Override
public void onAnimationStart() {
mFloatingButton.setVisibility(View.INVISIBLE);
myView.setVisibility(View.VISIBLE);
}
#Override
public void onAnimationEnd() {
Toast.makeText(getApplicationContext(), "Done", Toast.LENGTH_LONG)
.show();
}
#Override
public void onAnimationCancel() {
}
#Override
public void onAnimationRepeat() {
}
});
animator.setInterpolator(new AccelerateDecelerateInterpolator());
animator.setDuration(1000);
animator.start();
}
static float hypo(int a, int b) {
return (float) Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
}
}

The solution to do that is pathInterpolator and the name of this effect is Curved Motion.
Animations in material design rely on curves for time interpolation
and spatial movement patterns. With Android 5.0 (API level 21) and
above, you can define custom timing curves and curved motion patterns
for animations.
You can see how to implement it here :
http://developer.android.com/training/material/animations.html#CurvedMotion
And sample on GitHub HERE :

android - onClickListener causes a reset of my animation

I have an Activity with some elements like ImageView, Button, ToggleButton, ... . And a subview (LinearLayout) that contains an HorizontalScrollView of ImageView.
The subview is an element that I want to hide / show with an animation.
My animation works successfully. But when I touch a ToggleButton or I apply a Filter, the subview is reseted and back to its origin position.
I have deduce that the subview is replaced in its origin when an element of the view visually change.
But I don't understand why...
The Activity class
public class CameraActivity extends Activity implements PictureCallback
{
private ToggleButton flashButton;
private Button filterScrollButton;
private LinearLayout filterScrollView;
private LinearLayout filterScrollViewLayout;
private Boolean filtersIsOpened = false;
private ImageView filterImageView;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
// Show the Up button in the action bar.
getActionBar().setDisplayHomeAsUpEnabled(true);
flashButton = (ToggleButton)findViewById(R.id.button_flash);
filterScrollButton = (Button)findViewById(R.id.button_open_filters);
filterScrollView = (LinearLayout)findViewById(R.id.camera_scroll_filters);
filterScrollViewLayout = (LinearLayout)findViewById(R.id.camera_scroll_filters_layout);
}
...
private void initScrollFilters()
{
String[] filters = getResources().getStringArray(R.array.array_filters);
for (final String string : filters)
{
ImageView v = new ImageView(CameraActivity.this);
int imageFilterId = -1;
if (string != null && !string.isEmpty())
{
final int imageId = getResources().getIdentifier("#drawable/filter_" + string, null, getPackageName());
imageFilterId = getResources().getIdentifier("#drawable/filter_" + string, null, getPackageName());
v.setImageDrawable(getResources().getDrawable(imageId));
}
final int finalImageFilterId = imageFilterId;
v.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View view) {
Log.d(string + " filter image is touched");
CameraActivity.this.cameraManager.setImageFilter(finalImageFilterId); // Apply the new filter into filterImageView
}
});
filterScrollViewLayout.addView(v, 100, 100);
}
}
private void initListeners()
{
// Flash
flashButton.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
// camera parameters is changed
}
});
// Filter scroll view
filterScrollButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v)
{
Log.d("You click the filter scroll button men!!");
final float direction = (CameraActivity.this.filtersIsOpened) ? -1 : 1;
final float yDelta = -100;
final Animation animation = new TranslateAnimation(0, 0, 0, yDelta * direction);
animation.setAnimationListener(new AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {}
#Override
public void onAnimationRepeat(Animation animation) {}
#Override
public void onAnimationEnd(Animation animation)
{
TranslateAnimation anim = new TranslateAnimation(0.0f, 0.0f, 0.0f, 0.0f);
anim.setDuration(1);
CameraActivity.this.filterScrollView.startAnimation(anim);
int top = (int) (CameraActivity.this.filterScrollView.getTop() + (yDelta * direction));
CameraActivity.this.filterScrollView.setTop(top);
}
});
animation.setDuration(500);
CameraActivity.this.filterScrollView.startAnimation(animation);
CameraActivity.this.filtersIsOpened = ! CameraActivity.this.filtersIsOpened;
}
});
}
...
}
The xml view
<FrameLayout 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"
tools:context=".CameraActivity" >
<CameraPreview
android:id="#+id/camera_preview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ImageView
android:id="#+id/camera_preview_filter"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:rotation="90"
android:scaleType="center"
android:contentDescription="#string/content_desc_overlay" />
<LinearLayout
android:id="#+id/camera_scroll_filters"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginBottom="-40dp"
android:paddingTop="40dp"
android:orientation="vertical"
android:clickable="false"
android:longClickable="false" >
<Button
android:id="#+id/button_open_filters"
android:layout_width="wrap_content"
android:layout_height="25dp"
android:layout_gravity="top|center_horizontal"
android:text="Filters" >
</Button>
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FF00FF00"
android:scrollbars="none" >
<LinearLayout
android:id="#+id/camera_scroll_filters_layout"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:layout_gravity="bottom"
android:orientation="horizontal" >
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_gravity="bottom"
android:background="#FF000000" >
</FrameLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:onClick="onCaptureClick"
android:text="#string/button_capture_text" />
</FrameLayout>

Android, How to disable repeate of background image in customized progressbar?

I have customised progressbar.
HorizontalSlider class which inherits from ProgressBar is:
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ProgressBar;
public class HorizontalSlider extends ProgressBar {
private OnProgressChangeListener listener;
private static final int padding = 2;
private static final int getMin = 11;
public interface OnProgressChangeListener {
void onProgressChanged(View v, int progress);
}
public HorizontalSlider(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, android.R.attr.progressBarStyleHorizontal);
}
public HorizontalSlider(Context context, AttributeSet attrs) {
super(context, attrs);
}
public HorizontalSlider(Context context) {
super(context);
}
public void setOnProgressChangeListener(OnProgressChangeListener l) {
listener = l;
}
#Override
public boolean onTouchEvent(MotionEvent event) {
int action = event.getAction();
if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_MOVE) {
float x_mouse = event.getX() - padding;
float width = getWidth() - 2 * padding;
int progress = Math.round((float) getMax() * (x_mouse / width));
if (progress < getMin)
progress = getMin;
if (progress > getMax())
progress = getMax();
this.setProgress(progress);
if (listener != null)
listener.onProgressChanged(this, progress);
}
return true;
}
}
UI in xml format is:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:paddingTop="100dip"
android:gravity="center_horizontal" >
<com.astro.mania.classes.HorizontalSlider
android:id = "#+id/slider"
android:layout_width = "fill_parent"
android:layout_height= "wrap_content"
android:max="100"
android:layout_centerHorizontal="true"
style="?android:attr/progressBarStyleHorizontal" />
<com.astro.mania.classes.HorizontalSlider
android:id="#+id/progressBar"
android:progressDrawable="#drawable/progressbar"
android:layout_width="fill_parent"
android:layout_height="24dip"
style="?android:attr/progressBarStyleHorizontal"
android:indeterminateOnly="false"
android:max="100"
android:layout_below="#id/slider"
android:layout_marginTop="20dip" />
</RelativeLayout>
Progressbar customised as below:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#android:id/background">
<shape>
<gradient
android:startColor="#fffffe"
android:centerColor="#0b131e"
android:centerY="0.75"
android:endColor="#0d1522"
android:angle="270" />
</shape>
</item>
<item android:id="#android:id/secondaryProgress">
<clip>
<shape>
<gradient
android:startColor="#234"
android:centerColor="#234"
android:centerY="0.75"
android:endColor="#a24"
android:angle="270"
/>
</shape>
</clip>
</item>
<item android:id="#android:id/progress">
<bitmap android:src="#drawable/btn_slide_arrow" android:dither="true" />
</item>
</layer-list>
Finally the activity is like this:
public class LensaMania extends Activity {
private HorizontalSlider slider, slider2;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.activity_lensamania);
Log.i("LensaMania", "LensaMania activity started...");
setProgressBarVisibility(true);
slider = (HorizontalSlider) this.findViewById(R.id.slider);
slider.setOnProgressChangeListener(changeListener);
slider2 = (HorizontalSlider) this.findViewById(R.id.progressBar);
slider2.setVisibility(View.VISIBLE);
slider2.setMax(100);
slider2.setProgress(11);
slider2.setOnProgressChangeListener(changeListener);
}
private OnProgressChangeListener changeListener = new OnProgressChangeListener() {
public void onProgressChanged(View v, int progress) {
setProgress(progress);
Log.i("Progress is:", "=>" + progress);
}
};
}
When I run the application and slide progreebar, the image is repeated like image below. I want to have just one image and when I slide it to left want to see just one arrow. How to ask progressbar to don't repeat the image?