Develop Reference

Animation: In android how to scale & fade a view consisting of multiple lines of text from a central point

I want to animate a view consisting of multiple lines of text as shown in link https://dl.dropboxusercontent.com/u/8003415/animation.gif . This view consists of two TextViews enclosed in a parent view.
This parent view, contains two sets of animation.
1) the first set of view contains multiple lines of text which gets scaled from normal to large and then fades out.
2) second set of view contains another set of multiple text which fades and scales from small to normal.
please note that scaling and fading should happen simultaneously.
for the first set I designed the below animation set.This animation set scales((1,1)to (1.5,1.5))) and fades the text block from centre.
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#anim/custom_decelerator" >
<scale
android:duration="50"
android:fromXScale="1.0"
android:fromYScale="1.0"
android:pivotX="50%"
android:pivotY="50%"
android:toXScale="1.5"
android:toYScale="1.5" />
<alpha
android:duration="2000"
android:fromAlpha="2.0"
android:toAlpha="0.0" />
</set>
and for the second set also scales ((-1,-1)to (1,1)))and fades the text block from centre
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#anim/custom_decelerator" >
<alpha
android:duration="50"
android:fromAlpha="0.0"
android:toAlpha="0.2" />
<scale
android:duration="3000"
android:fromXScale="-1"
android:fromYScale="-1"
android:pivotX="50%"
android:pivotY="50%"
android:toXScale="1.0"
android:toYScale="1.0" />
</set>
The problem is that, the two sets of animation is exactly not matching the animation specified in above link.
The animation doesn’t seem to originate from the dead centre of the text blocks.

I haven`t really worked with the animations, so thought to give it a try.
Trial and error led to POC level app. Hence the bunch of code.
Note that i have used some static views and repeated the animations on them.That can be polished for the expected output mentioned.
There were some minor problems in the animation example, i have fixed that.
Code snippets are as follows.
anim/zoom_to_medium.xml
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/decelerate_interpolator">
<scale
android:duration="1000"
android:fromXScale="0"
android:fromYScale="0"
android:pivotX="50%"
android:pivotY="50%"
android:repeatMode="restart"
android:toXScale="1.0"
android:toYScale="1.0" />
<alpha
android:duration="50"
android:fromAlpha="0.0"
android:toAlpha="0.2" />
</set>
anim\zoom_to_full.xml
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/decelerate_interpolator">
<scale
android:duration="1000"
android:fromXScale="1.0"
android:fromYScale="1.0"
android:pivotX="50%"
android:pivotY="50%"
android:repeatMode="restart"
android:toXScale="2"
android:toYScale="2" />
<alpha
android:duration="1000"
android:fromAlpha="2.0"
android:toAlpha="0.0" />
</set>
activity_main.xml
<RelativeLayout 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:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="#drawable/border_circle"
android:orientation="vertical">
<LinearLayout
android:id="#+id/llFish"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="36%"
android:textColor="#android:color/black"
android:textSize="42dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:includeFontPadding="false"
android:text="Cat \n owners"
android:textColor="#android:color/black"
android:textSize="42dp" />
</LinearLayout>
<LinearLayout
android:id="#+id/llDog"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="54%"
android:textColor="#android:color/black"
android:textSize="42dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:includeFontPadding="false"
android:text="Fish \n owners"
android:textColor="#android:color/black"
android:textSize="42dp" />
</LinearLayout>
</RelativeLayout>
<Button
android:id="#+id/btnToggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Click Me" />
</RelativeLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private LinearLayout llDog;
private LinearLayout llFish;
private Animation zoomToMed, zoomToFull;
private Button btnToggle;
private boolean isRunning;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
llDog = (LinearLayout) findViewById(R.id.llDog);
llFish = (LinearLayout) findViewById(R.id.llFish);
zoomToMed = AnimationUtils.loadAnimation(this, R.anim.zoom_to_medium);
zoomToFull = AnimationUtils.loadAnimation(this, R.anim.zoom_to_full);
zoomToFull.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
hideViews();
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
startAnimations();
}
}, 1000);
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});
btnToggle = (Button) findViewById(R.id.btnToggle);
btnToggle.setOnClickListener(this);
}
private void hideViews() {
llDog.setVisibility(View.GONE);
llDog.setVisibility(View.GONE);
}
private void startAnimations() {
llDog.setVisibility(View.VISIBLE);
llFish.setVisibility(View.VISIBLE);
llDog.startAnimation(zoomToMed);
llFish.startAnimation(zoomToFull);
}
#Override
public void onClick(View view) {
isRunning = !isRunning;
if (isRunning) {
startAnimations();
} else {
hideViews();
}
}
}
and the bonus shape drawable for the red circle.
border_circle.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<stroke
android:width="2dp"
android:color="#android:color/holo_red_dark"></stroke>
<size android:width="250dp" android:height="250dp" />
</shape>

Applying these sets of animations simultaneously on that parent view would not result in the animation you are looking for. If I understand you correctly you are doing:
parentView.startAnimation(animSet1);
parentView.startAnimation(animSet2);
Am I right? If so, you are doing wrong! you should instead have the following layout: (This is not a real XML code, it is a pseudo XML code)
<Parent>
<Frame1>
<TextViews>
</Frame1>
<Frame2>
<TextViews>
</Frame2>
</Parent>
By this design you should consider that Parent element as a FrameLayout and that Frame elements can be whatever layout you want. Now you can achieve your desire animation by:
frame1.startAnimation(animSet1);
frame2.startAnimation(animSet2);
If something is unclear, don't hesitate, let me know.

Changing Text of EditText With a Little Animation in Android

I am making a simple calculator application for android. I've already made the code and everything works fine. However, I want to improve the design of its user interface by adding a little animation for the changing of text. So it's like this for example:
I will enter input via the buttons to the edittext, say for example, "2+3".
When I will press the enter button, "2+3" moves up and disappears then "5", from below, replaces the original position of "2+3".
How can I do this?

This should answer your question now that I understand it a little better. You just need a couple of animation files, one to slide the text out, and one to slide it in. You can adjust the animations however you would like:
Here is your click listener for the equals button:
Button btnEquals = (Button)findViewById(R.id.btnEquals);
btnEquals.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Animation slideOutBottom = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.out_bottom);
slideOutBottom.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
// Update the text here
Animation slideInTop = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.in_top);
llContainer.startAnimation(slideInTop);
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});
llContainer.startAnimation(slideOutBottom);
}
});
}
And here are the out_bottom.xml and in_top.xml files (respectively) that go in your anim folder:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="0%" android:toYDelta="100%" android:duration="600"/>
</set>
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="-100%" android:toYDelta="0%" android:duration="600"/>
</set>
And here is how I wrapped the layouts. Kind of quick and dirty, but it works:
<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="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:gravity="center_vertical"
android:background="#fff">
<LinearLayout
android:id="#+id/llContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical">
<EditText
android:id="#+id/edtInput"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="top"
android:padding="5dp"
android:background="#null"/>
</LinearLayout>
</LinearLayout>
<Button
android:id="#+id/btnEquals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="="/>
</LinearLayout>

Android animation - how add start margin?

I am trying to make animation of group of buttons sliding in and out but I am struggling with one problem.
Current animation is moving correctly but is sliding out from the very left of the screen. Just where is the button used to show up this. So this makes whole animation looks bad, because this group is sliding on this.
What I want to achieve is add some margin, or something similar that will make start of the animation just from the point where is the button.
I want it to look like this:
That means those 3 images will start showing from this white line, not from the very left of the screen.
Main activity onCreate, where everything is going on:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
image1 = (LinearLayout)findViewById(R.id.imageLayout);
button = (Button)findViewById(R.id.buttonShow);
animationSlideInLeft = AnimationUtils.loadAnimation(this,
R.anim.push_right_in);
animationSlideOutRight = AnimationUtils.loadAnimation(this,
R.anim.push_left_out);
animationSlideInLeft.setDuration(1000);
animationSlideOutRight.setDuration(1000);
animationSlideInLeft.setAnimationListener(animationSlideInLeftListener);
animationSlideOutRight.setAnimationListener(animationSlideOutRightListener);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v)
{
if(v == button)
{
if(!on)
{
curSlidingImage = image1;
image1.startAnimation(animationSlideInLeft);
image1.setVisibility(View.VISIBLE);
on = true;
}
else
{
image1.startAnimation(animationSlideOutRight);
image1.setVisibility(View.INVISIBLE);
on = false;
}
}
}
});
}
animations files:
push_right_in
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<translate
android:duration="300"
android:fromXDelta="-100%p"
android:toXDelta="0" />
<alpha
android:duration="300"
android:fromAlpha="0.0"
android:toAlpha="1.0" />
</set>
push_left_out
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<translate
android:duration="300"
android:fromXDelta="0"
android:toXDelta="-100%p" />
<alpha
android:duration="300"
android:fromAlpha="1.0"
android:toAlpha="0.0" />
</set>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<Button
android:id="#+id/buttonShow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Btn" />
<LinearLayout
android:id="#+id/imageLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="invisible" >
<ImageView
android:id="#+id/image1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon" />
<ImageView
android:id="#+id/image2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon" />
<ImageView
android:id="#+id/image3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon" />
</LinearLayout>
</LinearLayout>

try this code:
TranslateAnimation anim = new TranslateAnimation(-50, 0, 0, 0);
anim.setStartOffset(0);
anim.setDuration(3000);
imageView.startAnimation(anim);
Hope it Helps!!

You can add Padding to the parent Relative layout in this case the animations starts from padding like this
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingRight="64dp">

How to Animate two image view from Center to opposite to each other?

i want to animate the two images from middle of the screen to opposite to each other. like below image.
whatever i have done so far is right now i am able animate only one image from left to right and vice versa but now i want to animate them from middle.
here is my code :
b1 = (Button) findViewById(R.id.button1);
logo = (ImageView) findViewById(R.id.imageView1);
Display display = getWindowManager().getDefaultDisplay();
width = display.getWidth();
final Animation posX = new TranslateAnimation(0, width - 50, 0, 0);
posX.setDuration(1500);
posX.setFillAfter(true);
b1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
logo.startAnimation(posX);
logo.setVisibility(View.VISIBLE);
}
});
Edit:
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:background="#drawable/set_user_profile_back"
android:paddingLeft="10dp"
android:paddingRight="10dp" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="50dp"
android:contentDescription="#string/hello_world"
android:src="#drawable/prev_btn" />
<ImageView
android:id="#+id/ImageView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="#+id/imageView1"
android:contentDescription="#string/hello_world"
android:src="#drawable/next_btn" />
</RelativeLayout>
Thanks

ImageView img1 = findViewById(R.id.img1);
ImageView img2 = findViewById(R.id.img2);
Animation img1_Anim = AnimationUtils.loadAnimation(this,
R.anim.img1_animation);
img1_Anim.setAnimationListener(AnimationListener);
img1.startAnimation(img1_Anim);
Animation img2_Anim = AnimationUtils.loadAnimation(this,
R.anim.img2_animation);
img2_Anim.setAnimationListener(AnimationListener);
img2.startAnimation(img2_Anim);
private AnimationListener AnimationListener = new AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationRepeat(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
}
};
img1_animation
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true" >
<translate
android:duration="500"
android:fromXDelta="50%"
android:toXDelta="0%" />
</set>
img2_animation
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true" >
<translate
android:duration="500"
android:fromXDelta="50%"
android:toXDelta="100%" />
</set>

Android, How to set animation listener for view group?

I have an image view which acts as menu. When user click it a view group (including 5 other image view) will slide from left to right. When user click on menu again view group slides from right to left.
I can simulate this behavior but after sliding right to left I expect to not see view group however view group will put on its place. I tried to use LinearLayout.setVisibiliy(View.Invisible) but at that moment i couldn't see sliding right to left animation.
This is my code, any suggestion would be appreciated.
menu_open.xml
<layoutAnimation
xmlns:android="http://schemas.android.com/apk/res/android"
android:delay="10%"
android:animation="#anim/slide_out" />
slide_out.xml
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fromXDelta="-100%p"
android:toXDelta="0"
android:duration="#android:integer/config_mediumAnimTime" />
<alpha
android:fromAlpha="0.0"
android:toAlpha="1.0"
android:duration="#android:integer/config_mediumAnimTime" />
</set>
menu_close.xml
<layoutAnimation
xmlns:android="http://schemas.android.com/apk/res/android"
android:delay="10%"
android:animation="#anim/slide_in" />
slide_in.xml
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<translate
android:fromXDelta="0%p"
android:toXDelta="-100%p"
android:duration="#android:integer/config_mediumAnimTime" />
<alpha
android:fromAlpha="1.0"
android:toAlpha="0.0"
android:duration="#android:integer/config_mediumAnimTime" />
</set>
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ImageView
android:id="#+id/ivMenu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:contentDescription="#string/CD"
android:src="#drawable/ic_menu_01" />
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_toRightOf="#+id/ivMenu" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/CD"
android:src="#drawable/ic_menu_03" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/CD"
android:src="#drawable/ic_menu_04" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/CD"
android:src="#drawable/ic_menu_05" />
<ImageView
android:id="#+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/CD"
android:src="#drawable/ic_menu_06" />
<ImageView
android:id="#+id/imageView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="#string/CD"
android:src="#drawable/ic_menu_07" />
</LinearLayout>
</RelativeLayout>
MainActivity.java
public class MainActivity extends Activity {
private ImageView ivMenu;
private Animation animate;
private LinearLayout groupLayout;
private boolean menuState = false;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
groupLayout = (LinearLayout) findViewById(R.id.linearLayout);
groupLayout.setVisibility(View.INVISIBLE);
ivMenu = (ImageView) findViewById(R.id.ivMenu);
animate = AnimationUtils.loadAnimation(this, R.anim.animate);
ivMenu.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
ivMenu.startAnimation(animate);
runFadeOutAnimationOn(MainActivity.this, ivMenu);
if(!menuState) {
groupLayout.setVisibility(View.VISIBLE);
runExpandMenuAnimation(groupLayout, MainActivity.this);
} else {
runCollapseMenuAnimation(groupLayout, MainActivity.this);
// groupLayout.setVisibility(View.INVISIBLE);
}
menuState = !menuState;
Log.i("Menu state", "" + menuState);
}
});
}
public static void runExpandMenuAnimation(ViewGroup panel, Context ctx) {
LayoutAnimationController controller = AnimationUtils.loadLayoutAnimation(ctx, R.anim.menu_open);
panel.setLayoutAnimation(controller);
}
public static void runCollapseMenuAnimation(ViewGroup panel, Context ctx) {
LayoutAnimationController controller = AnimationUtils.loadLayoutAnimation(ctx, R.anim.menu_close);
panel.setLayoutAnimation(controller);
}
public static Animation runFadeOutAnimationOn(Activity ctx, View target) {
Animation animation = AnimationUtils.loadAnimation(ctx, android.R.anim.fade_out);
target.startAnimation(animation);
return animation;
}
}

Finally I found the solution. In this case we should use aViewGroup.setLayoutAnimationListener(new AnimationListener()...) and override its methods.
Therefore I added:
groupLayout.setLayoutAnimationListener(new AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {}
#Override
public void onAnimationRepeat(Animation animation) {}
#Override
public void onAnimationEnd(Animation animation) {
if(menuState)
groupLayout.setVisibility(View.INVISIBLE);
menuState = !menuState;
Log.i("Menu state", "" + menuState);
}
});