I need to do two things with a view:
Move top dimension to the very top of the window
Move bottom dimension to the very bottom of the window.
In short, I need the view to cover 100% of the parent view.
Translation animation didn't work because it moves the view but it doesn't increase the size.
Scale animation works but it stretches the content of the view and I don't want that. I want to increase the visible area, not stretch the content to fit the new dimensions.
What's the correct way to do this?
That can be easily achieved with Transitions API.
With Transitions API you do not take care of writing animations, you just tell what you want the end values be and Transitions API would take care of constructing animations.
Having this xml as content view (a view in the center of the screen):
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/root"
android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:id="#+id/view"
android:layout_width="120dp"
android:layout_height="80dp"
android:layout_gravity="center"
android:background="#color/colorAccent" />
</FrameLayout>
In activity:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.item)
val root = findViewById(R.id.root) as ViewGroup
val view = findViewById(R.id.view)
view.setOnClickListener {
// After this line Transitions API would start counting the delta
// and will take care of creating animations for each view in `root`
TransitionManager.beginDelayedTransition(root)
// By default AutoTransition would be applied,
// but you can provide your transition with the second parameter
// val transition = AutoTransition()
// transition.duration = 2000
// TransitionManager.beginDelayedTransition(root, transition)
// We are changing size of the view to match parent
val params = view.layoutParams
params.height = ViewGroup.LayoutParams.MATCH_PARENT
params.width = ViewGroup.LayoutParams.MATCH_PARENT
view.requestLayout()
}
}
Here's the output:
Platform's Transitions API (android.transition.TransitionManager) is available from API 19, but support libraries backport the functionality upto API 14 (android.support.transition.TransitionManager).
I like to keep everything as simple as it can be.
so my suggestion would be using a android Animating Layout Changes
Here is a sample:
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
android:animationCache="true">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/app_name"
android:background="#color/colorPrimary"
android:layout_gravity="center" />
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.textView);
}
#Override
protected void onResume() {
super.onResume();
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
View view = getWindow().getDecorView();
int height = getWindow().getDecorView().getHeight();
int width = getWindow().getDecorView().getWidth();
textView.setLayoutParams(new LinearLayout.LayoutParams(width, height));
LayoutTransition layoutTransition = ((ViewGroup) textView.getParent()).getLayoutTransition();
layoutTransition.enableTransitionType(LayoutTransition.CHANGING);
}
}, 2000);
}
}
You can try using ValueAnimator as shown in this answer:
https://stackoverflow.com/a/32835417/3965050
Note: I wanted to write this as a comment, but I don't have the reputation. This should not be considered as a full answer.
animateLayoutChanges="true" in the parent xml
+
.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
does the trick most of the times and it won't stretch the existing child views
Using ConstraintLayout with ConstrainSet should match your need in the most efficient way.
public class MainActivity extends AppCompatActivity {
ConstraintSet mConstraintSet1 = new ConstraintSet(); // create a Constraint Set
ConstraintSet mConstraintSet2 = new ConstraintSet(); // create a Constraint Set
ConstraintLayout mConstraintLayout; // cache the ConstraintLayout
boolean mOld = true;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Context context = this;
mConstraintSet2.clone(context, R.layout.state2); // get constraints from layout
setContentView(R.layout.state1);
mConstraintLayout = (ConstraintLayout) findViewById(R.id.activity_main);
mConstraintSet1.clone(mConstraintLayout); // get constraints from ConstraintSet
}
public void foo(View view) {
TransitionManager.beginDelayedTransition(mConstraintLayout);
if (mOld = !mOld) {
mConstraintSet1.applyTo(mConstraintLayout); // set new constraints
} else {
mConstraintSet2.applyTo(mConstraintLayout); // set new constraints
}
}
}
Source https://developer.android.com/reference/android/support/constraint/ConstraintSet.html
All you need is to define a second layout.xml with your expanded constraints and apply the second ConstraintSet to your view or activity when necessary.
ValueAnimator anim = ValueAnimator.ofInt(viewToIncreaseHeight.getMeasuredHeight(), -100);
anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
int val = (Integer) valueAnimator.getAnimatedValue();
ViewGroup.LayoutParams layoutParams = viewGroup.getLayoutParams();
layoutParams.height = val;
viewGroup.setLayoutParams(layoutParams);
}
});
anim.setDuration(DURATION);
anim.start();
Related
I have two layouts (green on top, red on bottom) in a vertical LinearLayout (parent) looking similar to this:
.
When focus goes from the green to red, I would like the green to slide up off the screen and have the red simultaneously slide up with it and fill the whole screen. And when focus moves from red back up I want the green to slide back into the screen and return to the original configuration. I have tried looking at many other questions but none have had the solution I need. I tried just changing visibility between gone and visible but I want it to be a smooth animation. I've tried using parentLayout.animate().translationY(greenLayout.getHeight()) on the outer LinearLayout and that does give the animation I want but then the red does not expand to fill the screen, like this:
.
I know this question is similar to this one but that question is really old and only had one answer which didn't work for me.
My solution has a lot of different pieces, so I'll start with the full XML and java code, and then talk about the important bits:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<View
android:id="#+id/green"
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#0f0" />
<View
android:id="#+id/red"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#f00"/>
</LinearLayout>
In the XML, the only really important part is that the red view uses a height of 0dp and weight of 1. This means it takes up all extra vertical space, which will be important when we get rid of the green view.
public class MainActivity extends AppCompatActivity {
private int originalHeight;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final View green = findViewById(R.id.green);
final View red = findViewById(R.id.red);
green.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
green.getViewTreeObserver().removeGlobalOnLayoutListener(this);
originalHeight = green.getHeight();
}
});
green.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
animateHeightOfView(green, originalHeight, 0);
}
});
red.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
animateHeightOfView(green, 0, originalHeight);
}
});
}
private void animateHeightOfView(final View view, int start, int end) {
ValueAnimator animator = ValueAnimator.ofInt(start, end);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
int height = (int) valueAnimator.getAnimatedValue();
ViewGroup.LayoutParams params = view.getLayoutParams();
params.height = height;
view.setLayoutParams(params);
}
});
animator.start();
}
}
In the Java, the two main parts are the ViewTreeObserver.OnGlobalLayoutListener and the animateHeightOfView() method.
The OnGlobalLayoutListener exists to capture the green view's original height. We have to use a listener to do this instead of just writing originalHeight = green.getHeight() inside onCreate() because the green view isn't actually laid out at that point, so getHeight() would return 0 if we tried that.
The animateHeightOfView() method leverages the ValueAnimator class to animate the height of whatever view you pass to it. Since there's no direct setter for a view's height, we can't use simpler methods like .animate(). We set up the ValueAnimator to produce int values on every frame, and then we use a ValueAnimator.AnimatorUpdateListener to modify the view's LayoutParams to set the height.
Feel free to play with it. I'm using click listeners to trigger the animation, and you mentioned focus, but you should be able to call animateHeightOfView() in a different way if it suits you.
I have a guideline in constraint layout like this
<android.support.constraint.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/guideline8"
app:layout_constraintGuide_percent="0.5"
android:orientation="vertical"/>
Later I want to change the app:layout_constraintGuide_percent value to something else conditionally. How can I achieve this.
There is two ways to do it:
Using ConstraintLayout.LayoutParams
This method get a specific parameter from the ConstraintLayout and modify it.
Guideline guideLine = (Guideline) findViewById(R.id.your_guideline);
ConstraintLayout.LayoutParams params = (ConstraintLayout.LayoutParams) guideLine.getLayoutParams();
params.guidePercent = 0.45f; // 45% // range: 0 <-> 1
guideLine.setLayoutParams(params);
Using ConstraintSet
This method consists in cloning the ConstraintLayout attributes, modifying them and then applying to the View.
BUT it's very slow.
ConstraintLayout constraintLayout = (ConstraintLayout) findViewById(R.id.your_constraint_with_guideline);
ConstraintSet constraintSet = new ConstraintSet();
constraintSet.clone(constraintLayout);
constraintSet.setGuidelinePercent(R.id.your_guideline, 0.07f); // 7% // range: 0 <-> 1
TransitionManager.beginDelayedTransition(constraintLayout);
constraintSet.applyTo(constraintLayout);
Creating a parallax effect
To test those methods I created a parallax animation using a GuideLine and a ScrollView on top.
On the AndroidManifest.xml, inside your Activity, add this: android:hardwareAccelerated="true".
<activity
android:name=".MainActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:hardwareAccelerated="true">
...
MainActivity.java
Guideline guideTopInfo;
ConstraintLayout constraintLayout;
ConstraintLayout.LayoutParams params;
ConstraintSet constraintSet;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
guideTopInfo = (Guideline) findViewById(R.id.guideline2);
constraintLayout = (ConstraintLayout) findViewById(R.id.constraint_root);
params = (ConstraintLayout.LayoutParams) guideTopInfo.getLayoutParams();
//constraintSet = new ConstraintSet();
//constraintSet.clone(constraintLayout);
final ScrollView scrollView = (ScrollView) findViewById(R.id.scroll_front);
scrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
#Override
public void onScrollChanged() {
float percentage = scrollView.getScrollY() * 0.0001f; // 0.001f faster // 0.00001f slower parallax animation
Log.d("mLog", String.valueOf(percentage));
if(percentage >= 0) {
// my XML percentage value was 12%
params.guidePercent = 0.12f - percentage; // up
//params.guidePercent = 0.12f + percentage; // downm
guideTopInfo.setLayoutParams(params);
//constraintSet.setGuidelinePercent(R.id.guideline2, 0.12f - percentage);
//TransitionManager.beginDelayedTransition(constraintLayout);
//constraintSet.applyTo(constraintLayout);
}
}
});
}
My other answer about parallax if anyone is interested. ;)
This code will change you guidePercent to 0
ConstraintLayout.LayoutParams lp = (ConstraintLayout.LayoutParams) guideline.getLayoutParams();
lp.guidePercent = 0;
guideline.setLayoutParams(lp);
guideline.setGuidelinePercent(value: Float)
This is enough to change the guideline percent during runtime.
you cam make it center doing it worked with me i hope it helps
<androidx.constraintlayout.widget.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintGuide_percent="0.5"
app:layout_constraintStart_toStartOf="parent" />
You need to use ConstraintSet object to set layout_constraintGuide_percent in code.
Below is the code to set layout_constraintGuide_percent in code. First you need to create constraint set object, call clone method passing constraintlayout and then call setGuidelinePercent passing guideline id and ratio.
ConstraintSet constraintSet = new ConstraintSet();
constraintSet.clone(constraintLayout);
constraintSet.setGuidelinePercent(R.id.guideline, 0.4f);
In Kotlin & inside Fragment or other activities,set GuideLine app: related parameters has a little difficulty , but I Solved it in this way :
val view = inflate(this, R.layout.ly_custom_menu_item_wallet_side_menu, null)
val guideL = view.findViewById<Guideline>(R.id.guideline_wallet)
var constParam: ConstraintLayout.LayoutParams = guideL.layoutParams as ConstraintLayout.LayoutParams
constParam.guidePercent = 0.42f
guideL.layoutParams = constParam
and this is Guideline element inside our ly_custom_menu_item_wallet_side_menu.xml layout :
<androidx.constraintlayout.widget.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/guideline_wallet"
android:orientation="vertical"
app:layout_constraintGuide_end="84dp" />
I inflate a layout containing an ImageView and a RelativeLayout. The layout has its width set to match_parent and its height set to wrap_content. The height is determined by the ImageView, but the image set to the ImageView is loaded dynamically from the internet.
Since I know the image ratio, I'd like to set the size of the ImageView before it's displayed to avoid a jump in the UI due to the change in the layout height when the image is set.
To set the size I need the layout width, to compute the ImageView height.
I tried
int width = header.getMeasuredWidth();
but since the layout is not drawn yet it returns 0
I also tried to use measure before, as suggested here
header.measure(0, 0);
int width = header.getMeasuredWidth();
but measure returns a NullPointerException
How can I do that?
list_header.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="#+id/pic"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<RelativeLayout
android:id="#+id/header_text_container"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="#789987">
</RelativeLayout>
</RelativeLayout>
MyListFragment.java
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mListView = (ListView) getView().findViewById(R.id.listview);
View header = getActivity().getLayoutInflater().inflate(R.layout.list_header, null);
int width = header.getMeasuredWidth(); // 0 because not drawn yet
ImageView pic = (ImageView) header.findViewById(R.id.pic);
pic.setLayoutParams(new LayoutParams(width, (int) (width/imgRatio)));
pic.invalidate();
header.invalidate();
/* ... */
}
You could try with a ViewTreeObserver.
Your Fragment/Activity should implement OnGlobalLayoutListener, in OnActivityCreate declare handler
ViewGroup container = (ViewGroup) findViewById(R.id.header_text_container)
ViewTreeObserver vto = container.getViewTreeObserver();
vto.addOnGlobalLayoutListener(this);
and put your width logic in listener when size are available
#Override
public void onGlobalLayout() {
// Remember to remove handler
container.getViewTreeObserver().removeGlobalOnLayoutListener(this);
View header = getActivity().getLayoutInflater().inflate(R.layout.list_header, null);
int width = header.getMeasuredWidth(); // 0 because not drawn yet
...
}
you can get the size in Activity's onWindowFocusChanged(boolean hasFocus) method.
You can get the width and height of a view in onGlobalLayout, wich is a method to Callback method wich is invoked when the global layout state or the visibility of views within the view tree changes (thus as soon as the view is drawn and the size is known).
ViewTreeObserver vto = header.getViewTreeObserver();
if(vto!=null){
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
header.getWidth();
header.getHeight();
}
});
}
In my main layout file, I have a RelativeLayout, with a weight of 1 (basically to display a map) above a LinearLayout with a weight of 2, declared this way :
<LinearLayout
android:id="#+id/GlobalLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:id="#+id/UpLayout"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="1" >
</RelativeLayout>
<LinearLayout
android:id="#+id/DownLayout"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="2"
android:orientation="vertical" >
</LinearLayout>
</LinearLayout>
DownLayout contains a list of items, when I click on an item, I would like to change the weight of DownLayout for 4, so the upper layout (the map) takes only 1/5 of the screen instead of 1/3.
I have managed to do it by changing the LayoutParams :
LinearLayout linearLayout = (LinearLayout) mActivity.findViewById(R.id.DownLayout);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
params.weight = 4.0f;
linearLayout.setLayoutParams(params);
It works but I'm not satisfied, the change is too immediate, there is no transition while I would like it to be smooth. Is there a way to use animation for that ?
I found some examples with ObjectAnimator to change the weightSum, but it does not do want I want (if I change only this property, I have some free space below my down layout) :
float ws = mLinearLayout.getWeightSum();
ObjectAnimator anim = ObjectAnimator.ofFloat(mLinearLayout, "weightSum", ws, 5.0f);
anim.setDuration(3000);
anim.addUpdateListener(this);
anim.start();
Is there a way to use ObjectAnimator (or something else) to do that ?
Thanks !
I recently came across a similar problem and solved it using a standard Animation (I have to target API 10 so couldn't use ObjectAnimator). I used a combination of the answer here with slight alterations to take into account weight instead of height.
My custom animation class looks as follows...
private class ExpandAnimation extends Animation {
private final float mStartWeight;
private final float mDeltaWeight;
public ExpandAnimation(float startWeight, float endWeight) {
mStartWeight = startWeight;
mDeltaWeight = endWeight - startWeight;
}
#Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) mContent.getLayoutParams();
lp.weight = (mStartWeight + (mDeltaWeight * interpolatedTime));
mContent.setLayoutParams(lp);
}
#Override
public boolean willChangeBounds() {
return true;
}
}
And its called by this method...
public void toggle() {
Animation a;
if (mExpanded) {
a = new ExpandAnimation(mExpandedWeight, mCollapsedWeight);
mListener.onCollapse(mContent);
} else {
a = new ExpandAnimation(mCollapsedWeight, mExpandedWeight);
mListener.onExpand(mContent);
}
a.setDuration(mAnimationDuration);
mContent.startAnimation(a);
mExpanded = !mExpanded;
}
Hopefully this will help you out, if you need more details or have questions about something let me know.
In my app there is a LinearLayout which has 0 Layout height. When I click the button this layout height should be LayoutParams.WRAP_CONTENT. This is the code I use in onclicklistner.
LayoutParams lp = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
slider.setLayoutParams(lp);
I want to animate this. How can I set animation to slider.
I think you just want to animate a view from 0 height to its final height, you can do this with a custom Animation:
public class ShowAnim extends Animation {
int targetHeight;
View view;
public ShowAnim(View view, int targetHeight) {
this.view = view;
this.targetHeight = targetHeight;
}
#Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
view.getLayoutParams().height = (int) (targetHeight * interpolatedTime);
view.requestLayout();
}
#Override
public void initialize(int width, int height, int parentWidth,
int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
}
#Override
public boolean willChangeBounds() {
return true;
}
}
And do this in your code to start the animation:
Animation ani = new ShowAnim(headerView, 100/* target layout height */);
ani.setDuration(2000/* animation time */);
headerView.startAnimation(ani);
use animateLayoutChanges xml and enableTransitionType in java or kotlin
1. add animateLayoutChanges to root layout xml
<LinearLayout
android:id="#+id/mainLinearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:orientation="vertical">
<android.support.v7.widget.AppCompatEditText
android:id="#+id/editText"
android:layout_width="match_parent"
android:layout_height="0dp" />
</LinearLayout>
2. in java
LayoutTransition layoutTransition = mainLinearLayout.layoutTransition;
layoutTransition.setDuration(5000); // Change duration
layoutTransition.enableTransitionType(LayoutTransition.CHANGING);
editText.layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT; // you can set number, example: 300
editText.requestLayout();
3.in kotlin
val layoutTransition = mainLinearLayout.layoutTransition
layoutTransition.setDuration(5000) // Change duration
layoutTransition.enableTransitionType(LayoutTransition.CHANGING)
editText.layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT // you can set number, example: 300
editText.requestLayout()
Since we have the layout transitions in android since JELLYBEAN we can use that instead of using the animation object.
The article below explains it in detail.
https://proandroiddev.com/the-little-secret-of-android-animatelayoutchanges-e4caab2fddec
In short we would only need this code -
tView.getLayoutTransition().enableTransitionType(LayoutTransition.CHANGING);
tView.setLayoutParams(lp);
Here lp would be the layout params
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams
(RelativeLayout.LayoutParams.MATCH_PARENT, newHeight);
One more thing to add would be to add this line in the layout file, to the layout that would be doing the transition.
android:animateLayoutChanges="true"
To animate change in Layout params of a Linear layout and its child you can use LayoutTransition.
Its important that you define and attach transition to Linear layout parent for eg: llRoot.setLayoutTransition(layoutTransition) in below code snippet before c hanging LayoutParams of child.
Support for LayoutTransition is above Android JellyBean
private var AnimationDuration = 1100f
#RequiresApi(Build.VERSION_CODES.JELLY_BEAN)
private fun fadeOutControls() {
var layoutTransition = LayoutTransition()
layoutTransition.setDuration(AnimationDuration.toLong()) // Change duration
layoutTransition.enableTransitionType(LayoutTransition.CHANGING)
layoutTransition.addTransitionListener(object : LayoutTransition.TransitionListener {
override fun startTransition(transition: LayoutTransition, container: ViewGroup, view: View, transitionType: Int) {
}
#TargetApi(Build.VERSION_CODES.JELLY_BEAN)
override fun endTransition(transition: LayoutTransition, container: ViewGroup, view: View, transitionType: Int) {
//Change this line of code to below one
transition.disableTransitionType(LayoutTransition.CHANGING)
}
})
// set transition to Linear layout
llRoot.setLayoutTransition(layoutTransition)
// change Layout params of child now to animate Transition
val lp = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT)
lp.weight = 10f
mediaRoot.setLayoutParams(lp)
leftControl.visibility = View.GONE
rightControl.visibility = View.GONE
}
If you want to implement the slider animation for your layout then see this demo.
UPDATED
Also see http://www.inter-fuser.com/2009/07/android-transistions-slide-in-and-slide.html
Hope it will help you.
If not then let me know.
Thanks.
Enjoy. :)