I am using the following code to expand a particular linearlayout and was following this tutorial
http://gmariotti.blogspot.sg/2013/09/expand-and-collapse-animation.html
But the animation is not really smooth, any reason why?
Layout 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:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context="com.techiequickie.bharath.parsetest.NewBet">
<LinearLayout
android:id = "#+id/mainLinear"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:padding="30px"
android:weightSum="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/bet_name_text"
android:id="#+id/tv_Betname"
android:textSize="#dimen/text_size_general"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/et_Betname" />
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/spin_Betcat1"
android:spinnerMode="dropdown"
android:entries="#array/bet_categories"/>
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/spin_Betcat2"
android:spinnerMode="dropdown"
android:paddingTop="#dimen/spin_categories_space_between"
android:entries="#array/bet_categories2"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/bet_value_text"
android:id="#+id/bv_Betvalue"
android:textSize="#dimen/text_size_general"/>
<SeekBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/sb_Betvalue"
android:max="10"
android:progress="0"
android:indeterminate="false" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.15">
<Switch
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Real Bet"
android:id="#+id/switch_Betreal"
android:checked="false" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/bet_description"
android:id="#+id/textView6"
android:textSize="#dimen/text_size_general" />
<LinearLayout
android:id="#+id/collapsable"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.71">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textMultiLine"
android:ems="10"
android:id="#+id/editText2"
android:layout_weight="1" />
</LinearLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/btn_Placebet"
android:layout_gravity="center_horizontal"
android:text="#string/place_bet_button" />
</LinearLayout>
</RelativeLayout>
Activity Class
package com.techiequickie.bharath.parsetest;
import android.animation.*;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
public class NewBet extends ActionBarActivity {
LinearLayout mainlayout, collapsablelayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new_bet);
mainlayout = (LinearLayout) findViewById(R.id.mainLinear);
collapsablelayout = (LinearLayout) findViewById(R.id.collapsable);
collapsablelayout.setVisibility(View.GONE);
mainlayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(collapsablelayout.getVisibility()==View.GONE)
{
expand();
}
else
{
collapse();
}
}
});
}
private void expand()
{
collapsablelayout.setVisibility(View.VISIBLE);
final int widthSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
final int heightSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
collapsablelayout.measure(widthSpec, heightSpec);
ValueAnimator mAnimator = slideAnimator(0, collapsablelayout.getMeasuredHeight());
mAnimator.start();
}
private void collapse() {
int finalHeight = collapsablelayout.getHeight();
ValueAnimator mAnimator = slideAnimator(finalHeight, 0);
mAnimator.addListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animation) {
}
#Override
public void onAnimationEnd(Animator animator) {
//Height=0, but it set visibility to GONE
collapsablelayout.setVisibility(View.GONE);
}
#Override
public void onAnimationCancel(Animator animation) {
}
#Override
public void onAnimationRepeat(Animator animation) {
}
});
mAnimator.start();
}
private ValueAnimator slideAnimator(int start, int end)
{
ValueAnimator animator = ValueAnimator.ofInt(start, end);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
//Update Height
int value = (Integer) valueAnimator.getAnimatedValue();
ViewGroup.LayoutParams layoutParams = collapsablelayout.getLayoutParams();
layoutParams.height = value;
collapsablelayout.setLayoutParams(layoutParams);
}
});
return animator;
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_new_bet, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
try adding android:animateLayoutChanges="true" to the linear layout
Related
When i click first time this animation collapse and expand itself suddenly, afterwards when click then it goes fine. problem is why this animation expand itself first time. Any expert here?
this is my xml code
<TextView
android:drawableRight="#drawable/ic_arrow_down"
android:background="#FFF12222"
android:textColor="#060606"
android:textSize="20sp"
android:text="Required Field"
android:id="#+id/section_required_field"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<LinearLayout
android:orientation="vertical"
android:id="#+id/layout_required_fields"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_marginTop="10dp"
android:id="#+id/tile_head"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Title"
android:textSize="16sp"
android:textColor="#060606"/>
<EditText
android:id="#+id/title"
android:layout_width="270sp"
android:layout_height="wrap_content"
android:text="abcd"
android:layout_marginTop="2dp"
android:background="#drawable/rounded_edittext"
android:textSize="15sp"/>
<TextView
android:id="#+id/description_head"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:text="Description"
android:textSize="15sp"
android:textColor="#060606"/>
<EditText
android:id="#+id/video_description"
android:layout_width="270sp"
android:layout_height="wrap_content"
android:layout_marginTop="2sp"
android:text="abcd"
android:background="#drawable/rounded_edittext"
android:textSize="15sp"/>
<TextView
android:id="#+id/category_head"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:text="Category"
android:textSize="15sp"
android:textColor="#060606"/>
<TextView
android:id="#+id/video_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="2sp"
android:text="abcd"
android:textSize="15sp"
android:textColor="#060606"/>
<TextView
android:id="#+id/tags_head"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:text="Tags"
android:textSize="15sp"
android:textColor="#060606"/>
<EditText
android:id="#+id/tags"
android:layout_width="270sp"
android:layout_height="wrap_content"
android:layout_marginTop="2sp"
android:text="abcd"
android:textSize="15sp"
android:background="#drawable/rounded_edittext"
android:textColor="#060606"/>
</LinearLayout>
this is my java class for animation
public class AnimationUtils {
public static void expand(final View v) {
v.measure(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
final int targetHeight = v.getMeasuredHeight();
// Older versions of android (pre API 21) cancel animations for views with a height of 0.
v.getLayoutParams().height = 1;
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)(targetHeight * interpolatedTime);
v.requestLayout();
}
#Override
public boolean willChangeBounds() {
return true;
}
};
// 1dp/ms
a.setDuration((int)(targetHeight / 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.GONE);
}else{
v.getLayoutParams().height = initialHeight - (int)(initialHeight * interpolatedTime);
v.requestLayout();
}
}
#Override
public boolean willChangeBounds() {
return true;
}
};
// 1dp/ms
a.setDuration((int)(initialHeight / v.getContext().getResources().getDisplayMetrics().density));
v.startAnimation(a);
}
}
and this is my java class code
tvRequiredField = (TextView) findViewById(R.id.section_required_field);
requiredFieldsLayout = (LinearLayout) findViewById(R.id.layout_required_fields);
tvRequiredField.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (v.isSelected()) {
AnimationUtils.collapse(requiredFieldsLayout);
v.setSelected(false);
}
else {
AnimationUtils.expand(requiredFieldsLayout);
v.setSelected(true);
}
}
});
i got my mistake
tvRequiredField = (TextView) findViewById(R.id.section_required_field);
requiredFieldsLayout = (LinearLayout) findViewById(R.id.layout_required_fields);
tvRequiredField.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (v.isSelected()) {//this should be expand instead of collapse
AnimationUtils.collapse(requiredFieldsLayout);
v.setSelected(false);
}
else {//this should be collapse instead of expand
AnimationUtils.expand(requiredFieldsLayout);
v.setSelected(true);
}
}
});
With Google’s recent release of the Design Support Library several cool new views have been introduced. Using some of the new components (e.g. CoordinatorLayout ) might (!) enable you to achieve the scrolling behavior.
I was tryed with some built in scrolling behavior but nothing is working for me,
I have a bottombar(LinearLayout) in my layout in place of FloatingActionButton
Here what I want.
OnLaunch of this screen bottom bar should appear.
On scrollup of recyclerview bottom bar should scrolldown.
On scrolldown of recyclerview bottom bar should scrollup
Is there any builtin mechanism to achieve this ? or We need write java code?
Here is my code:
main_activty.xml
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<include layout="#layout/toolbar_srp" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="5dp"
app:tabGravity="fill"
app:tabIndicatorColor="#android:color/white"
app:tabMode="fixed" />
</android.support.design.widget.AppBarLayout>
<!-- All Scrollable Views -->
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<!-- Bottom bar-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="#a0000000"
android:orientation="horizontal"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:gravity="center"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small"
android:text="AC"
android:textColor="#color/white" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:gravity="center"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small"
android:text="Sleeper"
android:textColor="#color/white" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:gravity="center"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small"
android:text="Premium"
android:textColor="#color/white" />
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
fragment.xml (here I was putted my recyclerview code)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small"
android:weightSum="1">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:background="#drawable/bg_srp_sorter"
android:clickable="true"
android:gravity="center"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small"
android:text="Departure" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:background="#drawable/bg_srp_sorter"
android:gravity="center"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small"
android:text="Duration" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:gravity="center"
android:paddingBottom="#dimen/padding_small"
android:paddingTop="#dimen/padding_small"
android:text="Price" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/lite_gray"></View>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1">
<android.support.v7.widget.RecyclerView
android:id="#+id/bus_list_recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
android:minHeight="?attr/actionBarSize">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.10">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/abc_ic_ab_back_mtrl_am_alpha" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.78"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1">
<TextView
android:id="#+id/toolbar_title_source"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.47"
android:ellipsize="end"
android:singleLine="true"
android:text="Thiruvananthapuram "
android:textColor="#color/white"
android:textSize="#dimen/label_text_size_large" />
<TextView
android:id="#+id/toolbar_title_arrow"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.08"
android:text="#string/char_right"
android:textColor="#color/white"
android:textSize="#dimen/label_text_size_large"
android:textStyle="bold" />
<TextView
android:id="#+id/toolbar_title_destination"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.47"
android:ellipsize="end"
android:singleLine="true"
android:text=" Cochin"
android:textColor="#color/white"
android:textSize="#dimen/label_text_size_large" />
</LinearLayout>
<TextView
android:id="#+id/toolbar_sub_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2 Seat(s)"
android:textColor="#color/lite_gray"
android:textSize="#dimen/label_text_size_normal" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.13">
<ImageView
android:layout_width="30dp"
android:layout_height="30dp"
android:scaleType="fitCenter"
android:src="#drawable/filter" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.Toolbar>
This how I did it:
mRecylerView.addOnScrollListener(new HideShowScrollListener() {
#Override
public void onHide() {
//fab.animate().setInterpolator(new AccelerateDecelerateInterpolator()).scaleX(0).scaleY(0);
// do your hiding animation here
}
#Override
public void onShow() {
// fab.animate().setInterpolator(new AccelerateDecelerateInterpolator()).scaleX(1).scaleY(1);
// do your showing animation here
}
});
You will be needing HideShowScrollListener.class
/**
* This class is a ScrollListener for RecyclerView that allows to show/hide
* views when list is scrolled.
* */
public abstract class HideShowScrollListener extends RecyclerView.OnScrollListener {
private static final int HIDE_THRESHOLD = 20;
private int scrolledDistance = 0;
private boolean controlsVisible = true;
#Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
if (scrolledDistance > HIDE_THRESHOLD && controlsVisible) {
onHide();
controlsVisible = false;
scrolledDistance = 0;
} else if (scrolledDistance < -HIDE_THRESHOLD && !controlsVisible) {
onShow();
controlsVisible = true;
scrolledDistance = 0;
}
if((controlsVisible && dy>0) || (!controlsVisible && dy<0)) {
scrolledDistance += dy;
}
}
public abstract void onHide();
public abstract void onShow();
}
since you are using CoordinatorLayout you could create a custom Behaviour that can achieve what you requested follow example below:
create a class that extends CoordinatorLayout.Behavior<View> follow example below:
public class QuickReturnFloaterBehavior extends CoordinatorLayout.Behavior<View> {
private int distance;
public QuickReturnFloaterBehavior(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, View child, View directTargetChild, View target, int nestedScrollAxes) {
return (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0;
}
#Override public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, View child, View target, int dx, int dy, int[] consumed) {
if (dy > 0 && distance < 0 || dy < 0 && distance > 0) {
child.animate().cancel();
distance = 0;
}
distance += dy;
final int height = child.getHeight() > 0 ? (child.getHeight()) : 600/*update this accordingly*/;
if (distance > height && child.isShown()) {
hide(child);
} else if (distance < 0 && !child.isShown()) {
show(child);
}
}
private void hide(View view) {
view.setVisibility(View.GONE);// use animate.translateY(height); instead
}
private void show(View view) {
view.setVisibility(View.VISIBLE);// use animate.translateY(-height); instead
}
}
now to apply this behaviour add this to your layout
app:layout_behavior="com.example.QuickReturnFloaterBehavior"
Visibility and Hide with Animation in Your Fragment:
recyclerView.addOnScrollListener(new HideShowScrollListener() {
final Fragment parentFragment = getParentFragment();
#Override
public void onHide() {
bottomLayout.animate().setDuration(200).translationYBy(-bottomLayout.getHeight()).setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
bottomLayout.setVisibility(View.GONE);
}
});
}
#Override
public void onShow() {
bottomLayout.animate().setDuration(200).translationY(0).setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
bottomLayout.setVisibility(View.VISIBLE);
}
});
}
#Override
public void onScrolled() {
// To load more data
}
});
HideShowScrollListener.java
public abstract class HideShowScrollListener extends RecyclerView.OnScrollListener {
private static final int HIDE_THRESHOLD = 20;
private int scrolledDistance = 0;
private boolean controlsVisible = true;
#Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
onScrolled();
if (scrolledDistance > HIDE_THRESHOLD && controlsVisible) {
onHide();
controlsVisible = false;
scrolledDistance = 0;
} else if (scrolledDistance < -HIDE_THRESHOLD && !controlsVisible) {
onShow();
controlsVisible = true;
scrolledDistance = 0;
}
if((controlsVisible && dy>0) || (!controlsVisible && dy<0)) {
scrolledDistance += dy;
}
}
public abstract void onHide();
public abstract void onShow();
public abstract void onScrolled();
}
package com.keshav.hideactionbarandfooterexample;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.widget.FrameLayout;
import android.widget.ImageButton;
import java.util.ArrayList;
import java.util.List;
import adapters.RecyclerAdapter;
import listners.HidingScrollListener;
public class MainActivity extends AppCompatActivity {
private Toolbar mToolbar;
private Toolbar toolbar_bottom;
private ImageButton mFabButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
setTheme(R.style.AppThemeRed);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.e("keshav", "MainActivity called");
initToolbar();
mFabButton = (ImageButton) findViewById(R.id.fabButton);
initRecyclerView();
}
private void initToolbar() {
mToolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar_bottom = (Toolbar) findViewById(R.id.toolbar_bottom);
setSupportActionBar(mToolbar);
setSupportActionBar(toolbar_bottom);
setTitle(getString(R.string.app_name));
mToolbar.setTitleTextColor(getResources().getColor(android.R.color.white));
toolbar_bottom.setTitleTextColor(getResources().getColor(android.R.color.white));
toolbar_bottom.setVisibility(View.GONE);
}
private void initRecyclerView() {
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
RecyclerAdapter recyclerAdapter = new RecyclerAdapter(createItemList());
recyclerView.setAdapter(recyclerAdapter);
recyclerView.addOnScrollListener(new HidingScrollListener() {
#Override
public void onHide() {
hideViews();
}
#Override
public void onShow() {
showViews();
}
});
}
private void hideViews() {
// TODO (-mToolbar) plus means 2 view above ho jaye or not visible to user
mToolbar.animate().translationY(-mToolbar.getHeight()).setInterpolator(new AccelerateInterpolator(2));
// TODO uncomment this Hide Footer in android when Scrolling
// TODO (+mToolbar) plus means 2 view forward ho jaye or not visible to user
toolbar_bottom.animate().translationY(+toolbar_bottom.getHeight()).setInterpolator(new AccelerateInterpolator(2));
// TODO keshav Hide Also Floatng Button In Android
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mFabButton.getLayoutParams();
int fabBottomMargin = lp.bottomMargin;
mFabButton.animate().translationY(mFabButton.getHeight() + fabBottomMargin).setInterpolator(new AccelerateInterpolator(2)).start();
// TODO keshav Hide Also Floatng Button In Android
}
private void showViews() {
mToolbar.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2));
// TODO uncomment this Hide Footer in android when Scrolling
toolbar_bottom.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2));
mFabButton.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2)).start();
}
private List<String> createItemList() {
List<String> itemList = new ArrayList<>();
for (int i = 0; i < 20; i++) {
itemList.add("Item " + i);
}
return itemList;
}
}
=============================================
RecyclerAdapter
=============================================
package adapters;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.keshav.hideactionbarandfooterexample.R;
import java.util.List;
/*
* RecyclerView Adapter that allows to add a header view.
* */
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int TYPE_HEADER = 2;
private static final int TYPE_ITEM = 1;
private List<String> mItemList;
public RecyclerAdapter(List<String> itemList) {
mItemList = itemList;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
if (viewType == TYPE_ITEM) {
final View view = LayoutInflater.from(context).inflate(R.layout.recycler_item, parent, false);
return RecyclerItemViewHolder.newInstance(view);
} else if (viewType == TYPE_HEADER) {
final View view = LayoutInflater.from(context).inflate(R.layout.recycler_header, parent, false);
return new RecyclerHeaderViewHolder(view);
}
throw new RuntimeException("There is no type that matches the type " + viewType + " + make sure your using types correctly");
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
if (!isPositionHeader(position)) {
RecyclerItemViewHolder holder = (RecyclerItemViewHolder) viewHolder;
String itemText = mItemList.get(position - 1); // header
holder.setItemText(itemText);
}
}
public int getBasicItemCount() {
return mItemList == null ? 0 : mItemList.size();
}
#Override
public int getItemViewType(int position) {
if (isPositionHeader(position)) {
return TYPE_HEADER;
}
return TYPE_ITEM;
}
#Override
public int getItemCount() {
return getBasicItemCount() + 1; // header
}
private boolean isPositionHeader(int position) {
return position == 0;
}
}
=====================================================
RecyclerHeaderViewHolder
=====================================================
package adapters;
import android.support.v7.widget.RecyclerView;
import android.view.View;
public class RecyclerHeaderViewHolder extends RecyclerView.ViewHolder {
public RecyclerHeaderViewHolder(View itemView) {
super(itemView);
}
}
=====================================================
RecyclerItemViewHolder
=====================================================
package adapters;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.TextView;
import com.keshav.hideactionbarandfooterexample.R;
public class RecyclerItemViewHolder extends RecyclerView.ViewHolder {
private final TextView mItemTextView;
public RecyclerItemViewHolder(final View parent, TextView itemTextView) {
super(parent);
mItemTextView = itemTextView;
}
public static RecyclerItemViewHolder newInstance(View parent) {
TextView itemTextView = (TextView) parent.findViewById(R.id.itemTextView);
return new RecyclerItemViewHolder(parent, itemTextView);
}
public void setItemText(CharSequence text) {
mItemTextView.setText(text);
}
}
===================================================
activity_main.xml
===================================================
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"/>
<ImageButton
android:id="#+id/fabButton"
android:layout_width="56dp"
android:layout_height="56dp"
android:layout_gravity="bottom|right"
android:layout_marginBottom="16dp"
android:layout_marginRight="16dp"
android:background="#drawable/fab_bcg"
android:src="#drawable/ic_favorite_outline_white_24dp"
android:contentDescription="#string/fab_description"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_bottom"
android:layout_width="match_parent"
android:layout_alignParentBottom="true"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"/>
</RelativeLayout>
</FrameLayout>
==================================================
recycle_header.xml in layout folder
==================================================
<?xml version="1.0" encoding="utf-8"?>
<View xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"/>
==================================================
recycle_item.xml in layout folder
==================================================
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="8dp"
card_view:cardCornerRadius="4dp">
<TextView
android:id="#+id/itemTextView"
android:layout_width="match_parent"
android:layout_height="?attr/listPreferredItemHeight"
android:gravity="center_vertical"
android:padding="8dp"
style="#style/Base.TextAppearance.AppCompat.Body2"/>
</android.support.v7.widget.CardView>
=================================================
styles.xml
=================================================
<resources>
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
</style>
<style name="AppThemeRed" parent="AppTheme">
<item name="colorPrimary">#color/color_primary_red</item>
<item name="colorPrimaryDark">#color/color_primary_red_dark</item>
</style>
<style name="AppThemeGreen" parent="AppTheme">
<item name="colorPrimary">#color/color_primary_green</item>
<item name="colorPrimaryDark">#color/color_primary_green_dark</item>
</style>
<style name="AppThemeBlue" parent="AppTheme">
<item name="colorPrimary">#color/color_primary_blue</item>
<item name="colorPrimaryDark">#color/color_primary_blue_dark</item>
<item name="colorAccent">#color/color_accent_pink</item>
</style>
</resources>
build.gradle Dependency
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:recyclerview-v7:25.3.1'
compile 'com.android.support:cardview-v7:25.3.1'
compile 'com.android.support:design:25.3.1'
#k0sh gave a fine solution. I want to update it to get a smooth animation
while showing and hiding the layout. Replace complete code inside
onNestedPreScroll() with the below code:
if (dy > 0) {
CoordinatorLayout.LayoutParams layoutParams = (CoordinatorLayout.LayoutParams) child.getLayoutParams();
int viewBottomMargin = layoutParams.bottomMargin;
child.animate().translationY(child.getHeight() + viewBottomMargin).setInterpolator(new LinearInterpolator()).start();
} else if (dy < 0) {
child.animate().translationY(0).setInterpolator(new LinearInterpolator()).start();
}
#k0sh's QuickReturnFloaterBehavior works but it sometimes not listen to the slight scrolls.
I am having contents in NestedScrollView with a LinearLayout as a bottom bar & didn't have the recycler view. so, I can't use other suggested answers.
Those who are having the same situation can use the BottomNavigationBehavior from this post Bottom Navigation Behavior. it works perfectly & useful.
When the current top-level view has a scrolling content, the bottom
navigation should hide when it is scrolled down and retract back when
the content is scrolled up. For this purpose, we need to be aware of
the direction of the scroll. VerticalScrollingBehavior is a generic
layout behavior that it is somehow an extension to the
CoordinatorLayout.Behavior that dispatches events on for direction of
scrolling.
source code for BottomNavigationBehavior - https://gist.github.com/NikolaDespotoski/1d6fef4949eb9be05a46#file-bottomnavigationbehavior-java
snippet from BottomNavigationBehavior
#Override
public void onDirectionNestedPreScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dx, int dy, int[] consumed, #ScrollDirection int scrollDirection) {
handleDirection(child, scrollDirection);
}
#Override
protected boolean onNestedDirectionFling(CoordinatorLayout coordinatorLayout, V child, View target, float velocityX, float velocityY, #ScrollDirection int scrollDirection) {
handleDirection(child, scrollDirection);
return true;
}
private void handleDirection(V child, #ScrollDirection int scrollDirection) {
if (!scrollingEnabled) return;
if (scrollDirection == ScrollDirection.SCROLL_DIRECTION_DOWN && hidden) {
hidden = false;
animateOffset(child, 0);
} else if (scrollDirection == ScrollDirection.SCROLL_DIRECTION_UP && !hidden) {
hidden = true;
animateOffset(child, child.getHeight());
}
}
I am running a sample of android expend animation. It is using value animation. I have two devices , one is samsang note 3 with 4.4.2 and other is galaxy s5 with 5.0 .The animation working fine on note 3 mobile but not working on galaxy s5 mobile. Is this an Os depended issue or something else. Any idea would be a great help. Here is my code
public class MainActivity extends Activity {
LinearLayout mLinearLayout;
LinearLayout mLinearLayoutHeader;
ValueAnimator mAnimator;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLinearLayout = (LinearLayout) findViewById(R.id.expandable);
//mLinearLayout.setVisibility(View.GONE);
mLinearLayoutHeader = (LinearLayout) findViewById(R.id.header);
//Add onPreDrawListener
mLinearLayout.getViewTreeObserver().addOnPreDrawListener(
new ViewTreeObserver.OnPreDrawListener() {
#Override
public boolean onPreDraw() {
mLinearLayout.getViewTreeObserver().removeOnPreDrawListener(this);
mLinearLayout.setVisibility(View.GONE);
final int widthSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
final int heightSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
mLinearLayout.measure(widthSpec, heightSpec);
// mAnimator.setDuration(1000);
mAnimator = slideAnimator(0, mLinearLayout.getMeasuredHeight());
return true;
}
});
mLinearLayoutHeader.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mLinearLayout.getVisibility()==View.GONE){
expand();
}else{
collapse();
}
}
});
}
private void expand() {
//set Visible
mLinearLayout.setVisibility(View.VISIBLE);
/* Remove and used in preDrawListener
final int widthSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
final int heightSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
mLinearLayout.measure(widthSpec, heightSpec);
mAnimator = slideAnimator(0, mLinearLayout.getMeasuredHeight());
*/
mAnimator.setDuration(1000);
mAnimator.start();
}
private void collapse() {
int finalHeight = mLinearLayout.getHeight();
ValueAnimator mAnimator = slideAnimator(finalHeight, 0);
mAnimator.addListener(new Animator.AnimatorListener() {
#Override
public void onAnimationEnd(Animator animator) {
//Height=0, but it set visibility to GONE
mLinearLayout.setVisibility(View.GONE);
}
#Override
public void onAnimationStart(Animator animator) {
}
#Override
public void onAnimationCancel(Animator animator) {
}
#Override
public void onAnimationRepeat(Animator animator) {
}
});
mAnimator.start();
}
private ValueAnimator slideAnimator(int start, int end) {
ValueAnimator animator = ValueAnimator.ofInt(start, end);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
//Update Height
int value = (Integer) valueAnimator.getAnimatedValue();
ViewGroup.LayoutParams layoutParams = mLinearLayout.getLayoutParams();
layoutParams.height = value;
mLinearLayout.setLayoutParams(layoutParams);
}
});
return animator;
}
}
Here is my sdk version in both gradle and manifest.
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="21" />
Here is my xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/header"
android:layout_width="fill_parent"
android:layout_height="64dp"
android:layout_marginTop="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:background="#FFF"
android:orientation="horizontal" >
<TextView
android:layout_marginTop="8dp"
android:layout_marginLeft="8dp"
android:layout_marginBottom="8dp"
android:id="#+id/color"
android:layout_width="#dimen/color_width"
android:layout_height="#dimen/color_height"
android:background="#drawable/rectangle"
android:gravity="center_vertical"
android:text=""
android:textAlignment="center"
android:textStyle="bold"
android:fontFamily="sans-serif-light"
/>
<TextView
android:id="#+id/clickme"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:textStyle="bold"
android:gravity="center_vertical"
android:fontFamily="sans-serif-light"
android:text="#string/clickme" />
</LinearLayout>
<LinearLayout
android:id="#+id/expandable"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:background="#FFF"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:text="#string/hello_world" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:text="#string/hello_world" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:text="#string/hello_world" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:text="#string/hello_world" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:text="#string/hello_world" />
</LinearLayout>
</LinearLayout>
I have a normal Relative Layout with text view and progress bar.
Now, since i have a fixed width and height of the layout the text is properly placed in the center and looks good, onclick of layout we are changing the visibility of progress bar to "Visible", but since i have a fixed width the progress bar is on top of the text.
What i am trying to achieve is , onclick increase the right end width of the layout along with animation.
Here is my code :
<RelativeLayout
android:id="#+id/rellyt"
android:layout_width="150dp"
android:layout_height="35dp"
android:layout_margin="5dp"
android:background="#B7E4FF"
android:clickable="true" >
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerInParent="true"
android:text="click on this button"
android:textColor="#000000"
android:textSize="14sp" />
<ProgressBar
android:id="#+id/prgbar"
style="#android:style/Widget.ProgressBar.Small"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="8dp"
android:visibility="visible" />
</RelativeLayout>
Screen shot of the layout :
Animation
public class ResizeWidthAnimation extends Animation
{
private int mWidth;
private int mStartWidth;
private View mView;
public ResizeWidthAnimation(View view, int width)
{
mView = view;
mWidth = width;
mStartWidth = view.getWidth();
}
#Override
protected void applyTransformation(float interpolatedTime, Transformation t)
{
int newWidth = mStartWidth + (int) ((mWidth - mStartWidth) * interpolatedTime);
mView.getLayoutParams().width = newWidth;
mView.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;
}
}
Usage
if(animate)
{
ResizeWidthAnimation anim = new ResizeWidthAnimation(leftFrame, leftFragmentWidthPx);
anim.setDuration(500);
leftFrame.startAnimation(anim);
}
else
{
this.leftFragmentWidthPx = leftFragmentWidthPx;
LayoutParams lp = (LayoutParams) leftFrame.getLayoutParams();
lp.width = leftFragmentWidthPx;
leftFrame.setLayoutParams(lp);
}
Try this way,hope this will help you to solve your problem.
main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<LinearLayout
android:id="#+id/customLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:background="#B7E4FF"
android:gravity="center"
android:padding="5dp">
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="click on this button"
android:textColor="#000000"
android:textSize="14sp" />
<ProgressBar
android:id="#+id/prgbar"
style="#android:style/Widget.ProgressBar.Small"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:visibility="invisible" />
</LinearLayout>
</LinearLayout>
MainActivity.java
public class MainActivity extends Activity {
private LinearLayout customLayout;
private ProgressBar prgbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
customLayout = (LinearLayout) findViewById(R.id.customLayout);
prgbar = (ProgressBar) findViewById(R.id.prgbar);
customLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(prgbar.getVisibility() == View.INVISIBLE){
prgbar.setVisibility(View.VISIBLE);
}else{
prgbar.setVisibility(View.INVISIBLE);
}
}
});
}
}
I am using JakeWharton's ViewPageIndicator. I want the height of the pager and the indicator to span around 300dp so that i can more content below it and it can scroll.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/scrollView"
android:fillViewport="true" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="300dp"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:paddingTop="2dp" />
<com.viewpagerindicator.CirclePageIndicator
android:id="#+id/indicator"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:padding="10dip" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
</LinearLayout>
</LinearLayout>
</ScrollView>
Things Work Perfect. But i am not able to Slide the Viewpagper and it gets really stuck and doesnt slide to the next one. Any one know how to make it work in a confined height ?
******Edit******
Trying to use the solution from Here. Am not very sure if its the right way to Sub-Class Scroll View.
public class PlaceDetailsFragment extends SherlockFragment {
PlaceSlidesFragmentAdapter mAdapter;
ViewPager mPager;
PageIndicator mIndicator;
public static final String TAG = "detailsFragment";
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_place_details,
container, false);
mAdapter = new PlaceSlidesFragmentAdapter(getActivity()
.getSupportFragmentManager());
mPager = (ViewPager) view.findViewById(R.id.pager);
mPager.setAdapter(mAdapter);
mIndicator = (CirclePageIndicator) view.findViewById(R.id.indicator);
mIndicator.setViewPager(mPager);
// ((CirclePageIndicator) mIndicator).setSnap(true);
mIndicator
.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
Toast.makeText(PlaceDetailsFragment.this.getActivity(),
"Changed to page " + position,
Toast.LENGTH_SHORT).show();
}
#Override
public void onPageScrolled(int position,
float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
return view;
}
public class CustomScrollView extends ScrollView {
private GestureDetector mGestureDetector;
View.OnTouchListener mGestureListener;
public CustomScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
mGestureDetector = new GestureDetector(context, new YScrollDetector());
setFadingEdgeLength(0);
}
#Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
return super.onInterceptTouchEvent(ev) && mGestureDetector.onTouchEvent(ev);
}
// Return false if we're scrolling in the x direction
class YScrollDetector extends SimpleOnGestureListener {
#Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
if(Math.abs(distanceY) > Math.abs(distanceX)) {
return true;
}
return false;
}
}
}
}
Have to create a Custom Scroll View and use that
public class VerticalScrollView extends ScrollView {
View.OnTouchListener mGestureListener;
private VelocityTracker mVelocityTracker;
private int mMaximumVelocity;
public VerticalScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
setFadingEdgeLength(0);
final ViewConfiguration configuration = ViewConfiguration.get(context);
mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
}
private boolean doNotInterceptUntilUp = false;
#Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
// System.out.println("onInterceptTouchEvent");
int action = ev.getAction();
int index = MotionEventCompat.getActionIndex(ev);
int mActivePointerId = MotionEventCompat.getPointerId(ev, index);
if (action == MotionEvent.ACTION_DOWN) {
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
}
mVelocityTracker.addMovement(ev);
} else if (action == MotionEvent.ACTION_MOVE) {
if (doNotInterceptUntilUp) {
return false;
}
mVelocityTracker.addMovement(ev);
mVelocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(
mVelocityTracker, mActivePointerId);
int initialYVelocity = (int) VelocityTrackerCompat.getYVelocity(
mVelocityTracker, mActivePointerId);
if (Math.abs(initialVelocity) > 100) {
// 140 is the minimum threshold it seems.
if (!(Math.abs(initialYVelocity) > 140))
doNotInterceptUntilUp = true;
return false;
}
} else if (action == MotionEvent.ACTION_UP) {
doNotInterceptUntilUp = false;
if (mVelocityTracker != null) {
mVelocityTracker.clear();
}
}
boolean val = super.onInterceptTouchEvent(ev);
return val;
}
}
XML
<?xml version="1.0" encoding="utf-8"?>
<com.m7.nomad.VerticalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.m7.nomad"
android:id="#+id/scrollView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fillViewport="true" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="300dp"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<com.viewpagerindicator.CirclePageIndicator
android:id="#+id/indicator"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:paddingBottom="10dip"
android:paddingLeft="10dip"
android:paddingTop="1dip" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing something cool" />
</LinearLayout>
</LinearLayout>
</com.m7.nomad.VerticalScrollView>