I need behavior similar to this implementation But NestedScrollView would be the parent and RecyclerView would be the child of would NestedScrollView .
Eg: https://medium.com/widgetlabs-engineering/scrollable-nestedscrollviews-inside-recyclerview-ca65050d828a
I am not sure whether it can be achieved.Tried disabling the of parent(NSV) while child(RV)is scrolling But scroll on child scrolls the entire view including parent.
I'v implemented Marc Knaup solution and all works correct event if NestedScrollView would be the parent and the result was shown below
btw, i put what i'v done
CustomRecycleView
package com.example.nested_scroll_test;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import androidx.core.view.NestedScrollingParent;
import androidx.recyclerview.widget.RecyclerView;
public class CustomRecycleView extends RecyclerView implements NestedScrollingParent {
private View nestedScrollTarget = null;
private boolean nestedScrollTargetIsBeingDragged = false;
private boolean nestedScrollTargetWasUnableToScroll = false;
private boolean skipsTouchInterception = false;
public CustomRecycleView(Context context) {
super(context);
}
public CustomRecycleView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomRecycleView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
#Override
public boolean dispatchTouchEvent(MotionEvent ev) {
boolean temporarilySkipsInterception = nestedScrollTarget != null;
if (temporarilySkipsInterception) {
// If a descendent view is scrolling we set a flag to temporarily skip our onInterceptTouchEvent implementation
skipsTouchInterception = true;
}
// First dispatch, potentially skipping our onInterceptTouchEvent
boolean handled = super.dispatchTouchEvent(ev);
if (temporarilySkipsInterception) {
skipsTouchInterception = false;
// If the first dispatch yielded no result or we noticed that the descendent view is unable to scroll in the
// direction the user is scrolling, we dispatch once more but without skipping our onInterceptTouchEvent.
// Note that RecyclerView automatically cancels active touches of all its descendents once it starts scrolling
// so we don't have to do that.
if (!handled || nestedScrollTargetWasUnableToScroll) {
handled = super.dispatchTouchEvent(ev);
}
}
return handled;
}
#Override
public boolean onInterceptTouchEvent(MotionEvent e) {
return !skipsTouchInterception && super.onInterceptTouchEvent(e);
}
#Override
public void onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
if (dyConsumed != 0) {
// The descendent was actually scrolled, so we won't bother it any longer.
// It will receive all future events until it finished scrolling.
nestedScrollTargetIsBeingDragged = true;
nestedScrollTargetWasUnableToScroll = false;
} else if (dyConsumed == 0 && dyUnconsumed != 0) {
// The descendent tried scrolling in response to touch movements but was not able to do so.
// We remember that in order to allow RecyclerView to take over scrolling.
nestedScrollTargetWasUnableToScroll = true;
if (target.getParent() != null)
target.getParent().requestDisallowInterceptTouchEvent(false);
}
}
#Override
public void onNestedScrollAccepted(View child, View target, int axes) {
if (axes != 0 && View.SCROLL_AXIS_VERTICAL != 0) {
// A descendent started scrolling, so we'll observe it.
nestedScrollTarget = target;
nestedScrollTargetIsBeingDragged = false;
nestedScrollTargetWasUnableToScroll = false;
}
super.onNestedScrollAccepted(child, target, axes);
}
#Override
public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
return nestedScrollAxes != 0 && View.SCROLL_AXIS_VERTICAL != 0;
}
#Override
public void onStopNestedScroll(View child) {
nestedScrollTarget = null;
nestedScrollTargetIsBeingDragged = false;
nestedScrollTargetWasUnableToScroll = false;
}
}
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="#layout/activity_main">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorAccent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="150dp"
android:background="#FFFFFF"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textAlignment="center"
android:text="Top Section"/>
</LinearLayout>
<com.example.nested_scroll_test.CustomRecycleView
android:id="#+id/rw"
android:layout_width="match_parent"
android:layout_height="300dp"
android:background="#color/colorPrimary"
android:nestedScrollingEnabled="true"
android:orientation="vertical">
</com.example.nested_scroll_test.CustomRecycleView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="150dp"
android:background="#FFFFFF"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textAlignment="center"
android:text="Bottom Section"/>
</LinearLayout>
</LinearLayout>
</androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
RecycleViewItem.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/nsw"
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="vertical">
<TextView
android:id="#+id/textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:background="#CCCC"
android:gravity="center"
android:nestedScrollingEnabled="false"
android:orientation="vertical"
android:padding="2dp"
android:textColor="#FFFFFF" />
</androidx.core.widget.NestedScrollView>
#Rockin use overscrollmode bro:)
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:fillViewport="true"
android:overScrollMode="always"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/color_white"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/activity_insight_recyclerview_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="#dimen/_20sdp"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:listitem="#layout/raw_insight" />
post entire thing what you have tried so far.
your xml should be ,
<android.support.v4.widget.NestedScrollView
android:id="#+id/nestedScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:overScrollMode="never">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<View > <!-- upper content -->
<!-- set recycler view with with wrap_content -->
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
set scrolling behaviour inside onCreateView() / onCreate() method.
requires Api 21+ .
RecyclerView v = (RecyclerView) findViewById(...);
v.setNestedScrollingEnabled(false);
or
android:nestedScrollingEnabled="false" // inside recycler view in xml file
This is demo for what you want look, In MainActivity.xml file :
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="MainActivity">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:focusableInTouchMode="true"
android:orientation="vertical">
<ImageView
android:id="#+id/top_seller"
android:layout_width="match_parent"
android:layout_height="200sp"
android:background="#color/colorAccent"
android:contentDescription="#string/app_name"
android:adjustViewBounds="true"
android:src="#drawable/background"
android:scaleType="fitXY"/>
<ImageView
android:id="#+id/top_seller1"
android:layout_width="match_parent"
android:layout_height="200sp"
android:background="#color/colorAccent"
android:contentDescription="#string/app_name"
android:adjustViewBounds="true"
android:src="#drawable/background"
android:scaleType="fitXY"/>
<android.support.v7.widget.RecyclerView
android:id="#+id/product_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:scrollbars="none" />
<ImageView
android:id="#+id/top_seller2"
android:layout_width="match_parent"
android:layout_height="200sp"
android:background="#color/colorAccent"
android:contentDescription="#string/app_name"
android:adjustViewBounds="true"
android:src="#drawable/background"
android:scaleType="fitXY"/>
<ImageView
android:id="#+id/top_seller3"
android:layout_width="match_parent"
android:layout_height="200sp"
android:background="#color/colorAccent"
android:contentDescription="#string/app_name"
android:adjustViewBounds="true"
android:src="#drawable/background"
android:scaleType="fitXY"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</LinearLayout>
In your MainActivity.java class onCreate method:
RecyclerView bestRecyclerView = findViewById(R.id.product_list);
GridLayoutManager mGrid = new GridLayoutManager(this, 2);
bestRecyclerView.setLayoutManager(mGrid);
bestRecyclerView.setHasFixedSize(true);
bestRecyclerView.setNestedScrollingEnabled(false);
// Create ProductAdapter for RecyclerView data
ProductAdapter mAdapter = new ProductAdapter(MainActivity4.this,getProductTestData());
bestRecyclerView.setAdapter(mAdapter);
I hope It'll help you...!
In general simple trick works for me. When attaching OnTouchListener to child View, in onTouch() just disable touch interrupts. Something like this:
RecyclerView rv = findViewById(...);
rv.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
...
v.getParent().requestDisallowInterceptTouchEvent(true);
Have you try subclass the RV and override onInterceptTouchEvent?
override fun onInterceptTouchEvent(event: MotionEvent?): Boolean {
when (event!!.action and MotionEvent.ACTION_MASK) {
MotionEvent.ACTION_DOWN -> {
// WE INTERACT WITH THIS RV. PREVENT PARENT TO INTERCEPT
parent.requestDisallowInterceptTouchEvent(true)
}
MotionEvent.ACTION_MOVE, MotionEvent.ACTION_CANCEL, MotionEvent.ACTION_UP -> {
// THIS SEEMS LIKE IT WILL HAVE "DEFAULT" BEHAVIOUR BUT SINCE WE CURRENTLY DRAGGING THE RV THEN IT WONT SCROLL THE PARENT
parent.requestDisallowInterceptTouchEvent(false)
}
}
return false
}
Related
I have a very simple scenario involving a NestedScrollView and LinearLayout where I want the LinearLayout to translate as the NestedScrollView scrolls up. Here is the layout in picture:(the concerned child view is the second last LinearLayout with the Id of linearlayout )
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.snapsboardmainpage.MainActivity"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp">
<android.support.v4.widget.NestedScrollView
android:id="#+id/nested_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="40dp"
android:orientation="vertical"
android:layout_gravity="top"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="0dp"
android:layout_marginRight="0dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="0dp"
app:layout_constraintLeft_toLeftOf="parent">
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="0dp"
android:layout_height="112dp"
android:orientation="vertical"
android:background="#android:color/holo_green_light"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/linearLayout3">
</LinearLayout>
<android.support.v4.view.ViewPager
android:id="#+id/id_viewpager_photosvideos_albums"
android:layout_width="0dp"
android:layout_height="1000dp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/linearLayout1">
<android.support.design.widget.TabLayout
android:id="#+id/id_tab_photosvideos_albums"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top">
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</android.support.design.widget.TabLayout>
</android.support.v4.view.ViewPager>
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="40dp"
android:orientation="vertical"
android:layout_gravity="top"
app:layout_behavior="com.example.snaps.TopActionBarBehavior"
android:background="#android:color/holo_blue_light">
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="56dp"
android:orientation="vertical"
android:layout_gravity="bottom"
android:background="#android:color/holo_orange_light">
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
And, the concerned behavior(TopActionBarBehavior) as follows:
public class TopActionBarBehavior extends CoordinatorLayout.Behavior<LinearLayout> {
private static final String TAG = "TopActionBarBehavior";
private int thresholdScrollDistance;
private int mNestedScrollViewInitialTop;
public TopActionBarBehavior() {
}
public TopActionBarBehavior(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
public boolean layoutDependsOn(CoordinatorLayout parent, LinearLayout child, View dependency) {
return dependency instanceof NestedScrollView;
}
#Override
public boolean onDependentViewChanged(CoordinatorLayout parent, LinearLayout child, View dependency) {
// Translate the child view as per the NestedScrollView
int currentNestedScrollViewTop = dependency.getTop();
// Have we scrolled up?
if(currentNestedScrollViewTop > mNestedScrollViewInitialTop){
// Translate the child view by the same distance
child.setTranslationY(currentNestedScrollViewTop - mNestedScrollViewInitialTop);
}
return true;
}
#Override
public boolean onLayoutChild(CoordinatorLayout parent, LinearLayout child, int layoutDirection) {
View topBar = parent.findViewById(R.id.linearLayout);
int topBarHeight = topBar.getHeight();
View nestedScrollView = parent.findViewById(R.id.nested_container);
mNestedScrollViewInitialTop = nestedScrollView.getTop();
View profileBar = parent.findViewById(R.id.linearLayout1);
int profileBarHeight = profileBar.getHeight();
View dummyTopBarUnderlay = parent.findViewById(R.id.linearLayout3);
int dummyTopBarHeight = dummyTopBarUnderlay.getHeight();
View tabLayout = parent.findViewById(R.id.id_tab_photosvideos_albums);
int tabLayoutHeight = tabLayout.getHeight();
thresholdScrollDistance = profileBarHeight + dummyTopBarHeight + tabLayoutHeight;
return super.onLayoutChild(parent, child, layoutDirection);
}
}
I tried debugging and layoutDependsOn() is getting called as it should be but onDependentViewChanged() is getting called only once.
Finally found the answer after countless hours of debugging. My NestedScrollView wasn't actually moving at all; it's content was moving the whole time which didn't trigger this method. For scroll events, we can tap onto the onNested*() methods in the Behavior class. Simple.
I have a group horizontal RecycleViews inside a SwipeRefreshLayout and I am having trouble with swiping the Recycleviews on the start of the page as it keeps stopping it and detecting a refresh swipe.
How to stop this from happening?
Or is there a way to trigger refresh only if not swiping?
Also, is this the best way to implement my desired layout?
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/activity_main_swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="70dp"
android:isScrollContainer="false"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/block_border"
android:orientation="vertical">
<TextView
android:id="#+id/trending_episodes_title"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<!--This is the first affected recycle -->
<android.support.v7.widget.RecyclerView
android:id="#+id/trendingEpisodesRecycle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:orientation="horizontal" />
</LinearLayout>
<!--This is the Second affected recycle -->
<android.support.v7.widget.RecyclerView
android:id="#+id/allNewsRecycle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/title_top"
android:clipToPadding="false"
android:orientation="horizontal" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/block_border"
android:orientation="vertical">
<TextView
android:id="#+id/moods_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/title_top"
android:textColor="#color/colorBlack"
android:textSize="20sp"
android:textStyle="bold" />
<android.support.v7.widget.RecyclerView
android:id="#+id/moodsRecycle"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:orientation="horizontal" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</ScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
Ok so I solved this problem by disabling the SwipeRefreshLayout when the RecycleView is being touched, and re-enabling it again once the user let go of the RecycleView.
Bellow are the code for that from my program:
MyRecycleView.addOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrollStateChanged(final RecyclerView recyclerView, int newState)
{
super.onScrollStateChanged(recyclerView,newState);
if (newState != RecyclerView.SCROLL_STATE_IDLE) { // on scroll stop
mSwipeRefreshLayout.setEnabled(false);
}
else
{
mSwipeRefreshLayout.setEnabled(true);
}
}
}
Zaid answer works fine. But in my case I had horizontal recycle views inside adapter, so for me it would be hard to connect adapter with activity recycler.
Easier approach is to create custom VerticalRefreshLayout and use it instead of SwipeRefreshLayout.
Kotlin solution:
class VerticalRefreshLayout(context: Context?, attrs: AttributeSet?) : SwipeRefreshLayout(context!!, attrs) {
private val mTouchSlop: Int = ViewConfiguration.get(context).scaledTouchSlop
private var mPrevX = 0f
#SuppressLint("Recycle")
override fun onInterceptTouchEvent(event: MotionEvent): Boolean {
when (event.action) {
MotionEvent.ACTION_DOWN -> mPrevX = MotionEvent.obtain(event).x
MotionEvent.ACTION_MOVE -> {
val eventX = event.x
val xDiff = abs(eventX - mPrevX)
if (xDiff > mTouchSlop) {
return false
}
}
}
return super.onInterceptTouchEvent(event)
}
I'm trying to use a Bottom Sheet with a ListView inside it, but I'm facing two problem, 1st. the ListView doesn't occupy all the space from the Bottom Sheet, the match-parent isn't working, 2nd. scrolling through the list view doesn't really work, if I try to scroll down it only scrolls a little instead of a normal scroll and if I scroll up, the Bottom Sheet closes instead of scrolling the list first.
Gif of the problem
Here's the XML:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.abili.agriexport2.MapsActivity" />
<android.support.v4.widget.NestedScrollView
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="350dp"
android:background="?android:attr/windowBackground"
android:clipToPadding="true"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimary"
android:orientation="horizontal">
<TextView
android:id="#+id/textView11"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:padding="16dp"
android:text="Direções"
android:textColor="#color/colorWhite"
android:textSize="24sp" />
<ImageButton
android:id="#+id/closeBottomSheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="5"
android:background="#null"
app:srcCompat="#drawable/mr_ic_close_dark" />
</LinearLayout>
<ListView
android:id="#+id/listaDirecoes"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
Appreciate any help :)
try to add
android:fillViewport="true"
to your NestedScrollView
For the other problem, I used this way once:
yourLV.setOnScrollListener(new ListView.OnScrollListener() {
#Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
}
#Override
public void onScrollStateChanged(AbsListView arg0, int arg1) {
if (listIsAtTop(yourLV)) {
yourLV.setOnTouchListener(null);
} else {
yourLV.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
// Disallow the touch request for parent scroll on touch of child view
v.getParent().requestDisallowInterceptTouchEvent(true);
return false;
}
});
}
}
});
And
public static boolean listIsAtTop(ListView listView) {
if(listView.getChildCount() == 0) return true;
return listView.getChildAt(0).getTop() == 0;
}
I have this simple layout:
<RelativeLayout 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.support.design.widget.CoordinatorLayout
android:id="#+id/root"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ActionBarThemeOverlay">
<include layout="#layout/include_toolbar_actionbar"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/theme_primary"
android:padding="#dimen/keyline_1">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/bg_search_view"
android:focusable="true"
android:focusableInTouchMode="true">
<com.xxxx.ui.widget.CustomSearchView
android:id="#+id/search_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:withBackButton="true" />
</FrameLayout>
</FrameLayout>
</android.support.design.widget.AppBarLayout>
<RelativeLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone"/>
<LinearLayout
android:id="#+id/methods_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="#dimen/keyline_5">
<com.xxx.ui.widget.ButtonSearchBy
android:id="#+id/search_by_categories"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:title="#string/search_by_categories"
app:icon="#drawable/ic_by_categories"
app:iconFillColor="#color/grey"
android:visibility="gone"/>
<com.xxx.ui.widget.ButtonSearchBy
android:id="#+id/search_by_recents"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:title="#string/search_by_recents"
app:icon="#drawable/ic_by_recents"
app:iconFillColor="#color/grey"
android:visibility="gone"/>
</LinearLayout>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
</RelativeLayout>
In my Activity, I added this code to disable user scroll on directly CoordinatorLayout:
if (mAppBarLayout.getLayoutParams() != null) {
CoordinatorLayout.LayoutParams layoutParams = (CoordinatorLayout.LayoutParams) mAppBarLayout.getLayoutParams();
AppBarLayout.Behavior appBarLayoutBehaviour = new AppBarLayout.Behavior();
appBarLayoutBehaviour.setDragCallback(new AppBarLayout.Behavior.DragCallback() {
#Override
public boolean canDrag(#NonNull AppBarLayout appBarLayout) {
return false;
}
});
layoutParams.setBehavior(appBarLayoutBehaviour);
}
This code works correctly, BUT in the "fragment_container" (FrameLayout), I add a RecyclerView, and if the user scrolls into this list then the Coordinator scrolls too...
I want collapse or expand automatically my CoordinatorLayout, and not to have a link with the RecyclerView scrolling.
I tried this too, but it doesn't work properly:
#Override
public boolean dispatchTouchEvent(MotionEvent event) {
if (mFragmentContainer.getVisibility() == View.VISIBLE &&
event.getAction() == MotionEvent.ACTION_MOVE) {
Rect fragContainerRect = new Rect();
mFragmentContainer.getHitRect(fragContainerRect);
if (fragContainerRect.contains((int) event.getX(), (int) event.getY())) {
LogUtils.LOGD("XXXX", "move");
mFragmentContainer.dispatchTouchEvent(event);
return true;
}
}
return super.dispatchTouchEvent(event);
}
So how can I do to disable the CoordinatorLayout scrolling when the list scrolls?
Thank you very much guys!
This is what I want to achieve :
I wanted to use AbsoluteLayout but it is deprecated.
So I made a RelativeLayout beneath the blue view in the image above, and then put everything inside a ScrollView, but the hidden view is still 'on' the blue view, and not below it. Also, the screen scrolls, but the hidden part is just cut , and instead I see the my app's default background..
Any ideas?
EDIT :
my current try :
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/imageView" />
<LinearLayout
android:id="#+id/centerHolder"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="vertical" >
.....
.....
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="1000dp"
android:layout_below="#id/main_holder"
android:background="#color/black_color">
</RelativeLayout>
</RelativeLayout>
</ScrollView>
I am taking this from a project of mine which displays a RecyclerView where you can add data if you click on a row - because the click "opens" the bottom sheet.
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/rl_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".view.fragment.BlockFragment">
<include
android:id="#+id/ll_header"
layout="#layout/layout_header_names" />
<include
android:id="#+id/divider_header"
layout="#layout/layout_divider_horizontal"
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_below="#+id/ll_header" />
<android.support.v7.widget.RecyclerView
android:id="#+id/rv_block"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/divider_footer"
android:layout_below="#+id/divider_header" />
<include
android:id="#+id/divider_footer"
layout="#layout/layout_divider_horizontal"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#767676"
android:layout_above="#+id/ll_footer" />
<include
android:id="#+id/ll_footer"
layout="#layout/layout_footer_score"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
<!-- Here comes my bottom sheet.
It is wrapped inside a FrameLayout, because an include cannot
have a behaviour. The included layout is every layout you
can imagine - mine is a RelativeLayout with two EditTexts
for example. The layout_behaviour is the second important line. -->
<FrameLayout
android:id="#+id/container_bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#e3e3e3"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<include layout="#layout/layout_bottom_sheet"/>
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
For the behaviour itself, you'll need to get the FrameLayout (the View with the app:layout_behavior="android.support.design.widget.BottomSheetBehavior").
private BottomSheetBehavior bottomSheetBehavior;
bottomSheetBehavior = BottomSheetBehavior.from((FrameLayout)findViewById(R.id.container_bottom_sheet);
//for the sheet to "peek":
bottomSheetBehavior.setPeekHeight(200);
//now you can set the states:
bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
It is also possible to set a BottomSheetCallback() in which you can get all the state changes and also the slideOffset!
bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
#Override
public void onStateChanged(#NonNull View bottomSheet, int newState) {
switch (newState) {
case BottomSheetBehavior.STATE_DRAGGING:
case BottomSheetBehavior.STATE_EXPANDED:
break;
case BottomSheetBehavior.STATE_COLLAPSED:
default:
}
}
#Override
public void onSlide(#NonNull View bottomSheet, float slideOffset) {
}
});
I think you should just use LinearLayout to wrap the ImageView and other layouts.
Edited the answer based on comments.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/centerHolder"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="vertical" >
.....
.....
</LinearLayout>
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/imageView"
android:layout_alignParentTop="true" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="1000dp"
android:layout_below="#+id/centerHolder"
android:background="#color/black_color">
</RelativeLayout>
</RelativeLayout>
</ScrollView>
Just replace your ScrollView with NestedScrollView
Example:
<android.support.v4.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
I realized you need something like this, just tested it out , just copy two files and see how it works.
import android.animation.ObjectAnimator;
import android.content.Context;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ScrollView;
public class MainActivity extends AppCompatActivity {
LinearLayout movableLL;
boolean mDragLockGained;
float initialTouchPoint;
// int cutoffElevation;
boolean inAnimation;
ScrollView scrollView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
scrollView = (ScrollView) findViewById(R.id.scrollView);
movableLL = (LinearLayout) findViewById(R.id.mobileLL);
movableLL.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (inAnimation) return true;
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mDragLockGained = true;
initialTouchPoint = event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
performTranslation(event);
initialTouchPoint = event.getRawY();
break;
case MotionEvent.ACTION_UP:
mDragLockGained = false;
performSettlingAnimation();
break;
}
return true;
}
});
}
private void performTranslation(MotionEvent event) {
float newDelta = event.getRawY() - initialTouchPoint;
float currentY = movableLL.getTranslationY();
if (currentY + newDelta > 0) {
movableLL.setTranslationY(currentY + newDelta);
if (scrollView.getTranslationY() + newDelta < 0){
}
scrollView.setTranslationY(scrollView.getTranslationY() + newDelta);
} else {
movableLL.setTranslationY(currentY);
scrollView.setTranslationY(scrollView.getTranslationY());
}
}
final int SETTLE_ANIMATION_DURATION = 300;
private void performSettlingAnimation() {
ObjectAnimator animLl = ObjectAnimator.ofFloat(movableLL, "translationY",
movableLL.getTranslationY(), convertDpToPixels(this, 150));
inAnimation = true;
animLl.setDuration(SETTLE_ANIMATION_DURATION);
animLl.start();
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
inAnimation = false;
}
}, SETTLE_ANIMATION_DURATION);//use animationListener here as a best practice and toggle values in
//on animation start and cancel/finish
ObjectAnimator animSv = ObjectAnimator.ofFloat(scrollView, "translationY", scrollView.getTranslationY()
, 0);
animSv.setDuration(SETTLE_ANIMATION_DURATION);
animSv.start();
}
public static int convertDpToPixels(Context context, int dp) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, context.getResources().getDisplayMetrics()
);
}
}
and the xml......
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView
android:id="#+id/scrollView"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="200dp"
android:gravity="center"
android:text="Hello There" />
<TextView
android:layout_width="match_parent"
android:layout_height="200dp"
android:gravity="center"
android:text="Hello Again" />
<TextView
android:layout_width="match_parent"
android:layout_height="200dp"
android:gravity="center"
android:text="WhatsUp" />
<TextView
android:layout_width="match_parent"
android:layout_height="200dp"
android:gravity="center"
android:text="See ya" />
</LinearLayout>
</ScrollView>
<LinearLayout
android:id="#+id/mobileLL"
android:layout_width="match_parent"
android:layout_height="300dp"
android:translationY="150dp"
android:layout_gravity="bottom"
android:background="#android:color/white"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#99ff0000" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#990000ff" />
</LinearLayout>
Please let me know if I missed something.
For this purposes the best way is to use BottomSheet from Design Support Library from my point of view.
<?xml version="1.0" encoding="utf-8"?><android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fillViewport="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="1000dp"
android:background="#android:color/white">
<!-- other layout -->
</RelativeLayout>
</RelativeLayout>
</ScrollView>
<FrameLayout
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:behavior_peekHeight="120dp"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<View
android:layout_width="match_parent"
android:layout_height="240dp"
android:background="#android:color/darker_gray" />
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
It also possible to combine it with your own a CoordinatorLayout Behavior to change scroll position for your scroll view, if needed.