I am confused because in my RecyclerView, some items has their height = 0 (even when they are correctly displayed and visible) and some have their normal height.
How is that possible ?
If I monitor the height with addOnGlobalLayoutListener, 90% of item has their correct height calculated, and 10% still have 0.
Any idea of how android works for this ?
My code is in Kotlin but it doesn’t matter.
init {
var heightItemView = 0
var currentY = itemView.y
var oldY = currentY
itemView.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
override fun onGlobalLayout() {
if (itemView.height > 0) {
heightItemView = itemView.height
itemView.viewTreeObserver.removeOnGlobalLayoutListener(this)
}
I also tried with measuredHeight().
My onCreateViewHolder() from the adapter:
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PairMarketAdapter.ViewHolder {
val v = android.view.LayoutInflater.from(parent.context)
.inflate(R.layout.item_pair_market, parent, false)
val holder = PairMarketAdapter.ViewHolder(v)
holder.itemView.setOnClickListener {
listener.onItemAction(holder.adapterPosition)
}
return holder
}
XML of the fragment:
<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:id="#+id/lCoordinatorRoot"
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:orientation="vertical"
>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rvPairMarket"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:paddingTop="#dimen/spacing_normal"
tools:listitem="#layout/item_pair_market"
/>
</LinearLayout>
And the item XML:
<LinearLayout
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="wrap_content"
android:background="?selectableItemBackground"
android:paddingBottom="#dimen/spacing_normal"
android:paddingTop="#dimen/spacing_small"
android:paddingEnd="#dimen/spacing_normal"
android:paddingStart="#dimen/spacing_normal"
android:orientation="horizontal"
>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/spacing_small"
android:layout_weight="1.5"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:id="#+id/tvSymbol"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="1"
android:textAllCaps="true"
android:textColor="?android:attr/textColorPrimary"
android:textSize="#dimen/font_large"
android:textStyle="bold"
tools:text="USD"
/>
<TextView
android:id="#+id/tvSymbolBase"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/spacing_tiny"
android:maxLines="1"
android:textAllCaps="true"
android:textColor="?android:attr/textColorSecondary"
android:textSize="#dimen/font_large"
android:textStyle="bold"
tools:text="BTC"
/>
<View
android:id="#+id/vIsSelected"
android:layout_width="10dp"
android:layout_height="10dp"
android:layout_gravity="center"
android:layout_marginStart="#dimen/spacing_small"
android:background="#drawable/circle_green_dot"
android:visibility="gone"
/>
</LinearLayout>
<TextView
android:id="#+id/tvExchange"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/spacing_tiny"
android:maxLines="1"
android:textColor="?android:attr/textColorSecondary"
android:textSize="#dimen/font_normal"
tools:text="1. Bitfinex"
/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
>
<TextView
android:id="#+id/tvPercent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:textColor="?android:attr/textColorPrimary"
android:textSize="#dimen/font_large"
tools:text="55.5%"
/>
</LinearLayout>
</LinearLayout>
itemView.measuredHeight android will try to measure your view before display try using itemView.height inside addOnGlobalLayoutListener
Related
I want to achieve something not usual for a AppBarLayout + Recyclerview scrollingviewbehavior effect.
I want to make the recyclerview move with AppBarLayout and go behind AppBarLayout when user scrolls. I need it to be really behind AppBarlayout because the background of AppbarLayout will be half transparent so recyclerview will be visible.
I don't know how to do this.
I did try multiple variants of ScrollViewBehavior.
I did try also setting negative values to SwipeRefreshlayout topMaring and change this value during scroll. Values where provided from AppBarLayout.addOnOffsetChangedListener from given i "vertical scroll offset". The result was that the swipeRefreshLayout flickered during scroll and during going behind AppBarLayout.
Please help me with this. I have no more options left.
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:id="#+id/clRootMain"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="false"
android:background="#color/backgroundGray">
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="#+id/srlSwipeRefresh"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/transparent"
android:isScrollContainer="true"
app:layout_behavior=".Util.View.ScrollingViewOverlapBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rvList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipChildren="false"
android:divider="#android:color/transparent"
android:dividerHeight="#dimen/dp5"
android:drawSelectorOnTop="true"
android:fadeScrollbars="true"
android:fadingEdge="none"
android:fadingEdgeLength="#dimen/dp0"
android:gravity="center"
android:isScrollContainer="true"
android:nestedScrollingEnabled="true"
android:overScrollMode="never"
android:paddingLeft="#dimen/list_margin"
android:paddingRight="#dimen/list_margin"
android:scrollbarAlwaysDrawVerticalTrack="true"
android:scrollbarSize="#dimen/dp4"
android:scrollbarStyle="outsideOverlay"
android:scrollbars="vertical"
android:smoothScrollbar="false"
app:fastScrollEnabled="true"
app:fastScrollHorizontalThumbDrawable="#drawable/scrollbar_draggable"
app:fastScrollHorizontalTrackDrawable="#drawable/scrollbar_track_line"
app:fastScrollVerticalThumbDrawable="#drawable/scrollbar_draggable"
app:fastScrollVerticalTrackDrawable="#drawable/scrollbar_track_line" />
<TextView
android:id="#+id/tvEmptyListText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="#dimen/dp20"
android:layout_marginTop="#dimen/dp10"
android:layout_marginRight="#dimen/dp20"
android:alpha="0.5"
android:gravity="center"
android:text="#string/category_product_list_empty"
android:textColor="#color/textGreyDark"
android:visibility="gone" />
</LinearLayout>
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/ablMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#80ffffff"
android:fitsSystemWindows="true"
android:orientation="vertical"
app:liftOnScroll="false">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:orientation="vertical"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed|exitUntilCollapsed">
<LinearLayout
android:id="#+id/llOpenOrderListContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="gone">
<TextView
android:id="#+id/tvOpenOrdersTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="#dimen/dp10"
android:layout_marginTop="#dimen/dp15"
android:alpha="0.6"
android:clickable="false"
android:gravity="center|left"
android:singleLine="true"
android:text="#string/current_orders_title"
android:textAllCaps="true"
android:textAppearance="#style/TextAppearance.AppCompat.Body2"
android:textColor="#color/textColor"
android:textSize="#dimen/sp10"
android:textStyle="normal" />
<androidx.viewpager.widget.ViewPager
android:id="#+id/vpOpenOrderList"
android:layout_width="match_parent"
android:layout_height="#dimen/dp75"
android:background="#android:color/transparent"
android:visibility="visible" />
</LinearLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:id="#+id/rlTopContainer"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#android:color/white"
app:layout_constraintDimensionRatio="H,16:9"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.viewpager.widget.ViewPager
android:id="#+id/vpBannerPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/transparent" />
<RelativeLayout
android:id="#+id/rlControlContainer"
android:layout_width="#dimen/dp100"
android:layout_height="#dimen/dp30"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="#dimen/dp15"
android:background="#android:color/transparent">
<com.google.android.material.tabs.TabLayout
android:id="#+id/tlBannerDots"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
app:tabBackground="#drawable/tab_selector_images"
app:tabGravity="center"
app:tabIndicatorHeight="0dp"
app:tabMinWidth="#dimen/dp3"
app:tabMode="fixed" />
</RelativeLayout>
<ImageView
android:id="#+id/ivHalfCircleBackgroundWithStroke"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_marginTop="#dimen/dp50"
android:scaleType="fitXY"
app:srcCompat="#drawable/ic_bottom_arc"
/>
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</LinearLayout>
<RelativeLayout
android:id="#+id/rlCategoryContainer"
android:layout_width="match_parent"
android:layout_height="#dimen/dp75"
android:background="#android:color/transparent">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rvCategoryList"
android:layout_width="wrap_content"
android:layout_height="#dimen/dp70"
android:layout_above="#+id/llSeparatorLine"
android:layout_centerHorizontal="true"
android:clipChildren="false"
android:divider="#android:color/white"
android:dividerHeight="#dimen/dp10"
android:drawSelectorOnTop="true"
android:fadeScrollbars="true"
android:fastScrollEnabled="false"
android:gravity="center"
android:isScrollContainer="true"
android:nestedScrollingEnabled="true"
android:overScrollMode="never"
android:scrollIndicators="none"
android:scrollbars="none" />
<LinearLayout
android:id="#+id/llSeparatorLine"
android:layout_width="match_parent"
android:layout_height="#dimen/dp1"
android:layout_alignParentBottom="true"
android:background="#drawable/grey_line_with_fading_edges_light"
android:orientation="horizontal" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/rlBottomDownArcContainer"
android:layout_width="match_parent"
android:layout_height="#dimen/dp40"
android:background="#android:color/transparent">
<TextView
android:id="#+id/tvSectionName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="#android:color/transparent"
android:clickable="false"
android:gravity="center_horizontal|top"
android:singleLine="true"
android:text="KWIATY"
android:textAllCaps="true"
android:textAppearance="#style/TextAppearance.AppCompat.Body1"
android:textColor="#color/textGrey"
android:textSize="#dimen/sp12"
android:textStyle="bold" />
</RelativeLayout>
</com.google.android.material.appbar.AppBarLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fabFilter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginLeft="#dimen/dp5"
android:layout_marginTop="#dimen/dp5"
android:layout_marginRight="#dimen/dp10"
android:layout_marginBottom="#dimen/dp10"
android:elevation="#dimen/dp4"
android:stateListAnimator="#animator/lift_on_touch"
android:visibility="visible"
app:backgroundTint="#android:color/white"
app:borderWidth="0dp"
app:elevation="4dp"
app:fabSize="normal"
app:rippleColor="#color/colorAccent"
app:srcCompat="#drawable/ic_icon_filtr_black" />
<!--</RelativeLayout>-->
</androidx.coordinatorlayout.widget.CoordinatorLayout>
public class ScrollingViewOverlapBehavior extends AppBarLayout.ScrollingViewBehavior {
public ScrollingViewOverlapBehavior() {
super();
}
public ScrollingViewOverlapBehavior(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
public boolean onDependentViewChanged(CoordinatorLayout parent, View child,
View dependency) {
super.onDependentViewChanged(parent, child, dependency);
child.setTranslationY(dependency.getY());
return false;
}
}
This is what I have achieved so far but it leaves space at the bottom. I am using setTranslationY on my custom ScrollingViewBehavior (ScrollingViewOverlapBehavior).
https://drive.google.com/open?id=12Ri87BGKmAmwNq_rC-wpmCcYZyansmGl
in fact I have the following problem:
I have two ListView loaded automatically with two adapters, the problem is in the XML, both list only displays the first element.
here is my xml code:
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="com.example.hrizi.onescore.home_links.searshscore">
<include
android:id="#+id/toolbar"
layout="#layout/apptoolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:scaleType="fitCenter" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="66dp"
android:fillViewport="true">
<LinearLayout
android:id="#+id/ll1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="#+id/ll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<EditText
android:id="#+id/sv_search"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:background="#drawable/edittextbackground"
android:hint="Search ..."
android:inputType="text"
android:textAlignment="center"></EditText>
<Button
android:id="#+id/btn_search"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_marginRight="20dp"
android:layout_weight="1"
android:background="#color/coloronscore"
android:onClick="btnsearchOnClick"
android:text="Search"
android:textAllCaps="false"
android:textColor="#color/colorwhite" />
</LinearLayout>
<!--Result of research-->
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="248dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:paddingBottom="5dp" />
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="248dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:paddingBottom="5dp" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
the problem I think in the ScrollView or something else that flushes to that.
thank you in advance .
You can use this function to display all the items in the listview.
public static void setListViewHeightBasedOnChildren(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
// pre-condition
return;
}
int totalHeight = 0;
int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.AT_MOST);
for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
totalHeight += listItem.getMeasuredHeight();
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
listView.setLayoutParams(params);
listView.requestLayout();
}
Example:
setListViewHeightBasedOnChildren(yourlistview);
I'm using a recyclerview inside NestedScrollView and I want to pin my search bar to action bar after scrolling and recyclerview items must show under searchbar, I need to make lazy load for my recyclerview items (load next items from server after scrolling to end) for this I need to check recyclerview scroll change state and I can't do this perfectly when I use recyclerview inside nestedscrollview. I tried using nestedscrollview scroll state change listener and it doesn't give me what I want and doesn't work right.
Nested scroll view is not working if it's placed inside recyclerview. I have lazy load recyclerview but same layout contain other layouts like slider, menus then recyclerview. I want to scroll full layout and when recyclerview ends onscroll then onload execute to get more item from internet and load in recylerview.
Here you see my codes:
my layout xml code
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/main_activity_background">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="200dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="#color/colorPrimaryDark"
app:expandedTitleTextAppearance="#style/TextAppearance.AppCompat.Headline"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:titleEnabled="false">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="#drawable/bg_gradient"
android:orientation="vertical"
android:gravity="center_horizontal"
android:paddingBottom="5dp"
android:paddingLeft="#dimen/spacing_large"
android:paddingRight="#dimen/spacing_large"
android:paddingTop="#dimen/spacing_mxlarge">
<LinearLayout
android:id="#+id/layout_dots"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_gravity="center"
android:gravity="center"
android:orientation="horizontal" />
</RelativeLayout>
</RelativeLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:contentInsetStartWithNavigation="0dp"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:contentInsetLeft="0dp"
android:contentInsetStart="0dp"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
android:contentInsetRight="0dp"
android:contentInsetEnd="0dp"
app:contentInsetRight="0dp"
app:contentInsetEnd="0dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:focusable="true"
android:focusableInTouchMode="true"
android:background="#drawable/searchbox_stroke_bg"
android:orientation="horizontal">
<EditText
android:layout_width="0dp"
android:layout_weight="0.9"
android:layout_height="40dp"
android:hint="#string/search"
android:textDirection="locale"
android:textAlignment="viewStart"
android:drawablePadding="10dp"
android:layout_gravity="start"
android:paddingStart="15dp"
android:textColor="#color/searchbox_stroke"
android:maxLines="1"
android:singleLine="true"
android:maxLength="25"
android:textSize="17sp"
android:paddingEnd="5dp"
android:background="#android:color/transparent"
android:theme="#style/MainSearchEditTextTheme"
android:drawableStart="#drawable/ic_search"/>
<ImageView
android:layout_width="0dp"
android:layout_weight="0.1"
android:layout_height="16dp"
android:src="#drawable/ic_filter"
android:layout_gravity="center_vertical" />
</LinearLayout>
</android.support.v7.widget.Toolbar>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:id="#+id/main_nested_scrollView"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<RelativeLayout
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:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
android:scrollingCache="true"
android:nestedScrollingEnabled="false"
android:id="#+id/main_recyclerview"
android:layout_marginBottom="5dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/more_items_progress"
android:visibility="gone">
<ProgressBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/progress_bar"
android:indeterminate="true"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/lyt_progress"
android:layout_centerInParent="true"
android:layout_marginTop="100dp"
android:orientation="vertical">
<com.armanjafari.raimon.widget.ViewLoadingDotsBounce
android:layout_width="50dp"
android:layout_height="40dp"
android:layout_centerHorizontal="true"
android:background="#color/colorAccent">
</com.armanjafari.raimon.widget.ViewLoadingDotsBounce>
</LinearLayout>
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
My code to check scroll state and it didn't work
nested_content.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
#Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY)
{
if (scrollY < oldScrollY)
{ // up
((MainActivity)getActivity()).animateNavigation(false);
}
if (scrollY > oldScrollY)
{ // down
((MainActivity)getActivity()).animateNavigation(true);
}
if (scrollY == ( v.getChildAt(0).getMeasuredHeight() - v.getMeasuredHeight() ))
{
if (!is_loading)
{
if (current_page < all_pages)
{
//not work right scroll state
}
}
}
}
});
i got the answer, if any one have my problem see below...
for detect nestedscrollview is at end correctly use this code:
nested_content.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
#Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY)
{
if (scrollY < oldScrollY)
{ // up
((MainActivity)getActivity()).animateNavigation(false);
}
if (scrollY > oldScrollY)
{ // down
((MainActivity)getActivity()).animateNavigation(true);
}
View view = (View) nested_content.getChildAt(nested_content.getChildCount() - 1);
int diff = (view.getBottom() - (nested_content.getHeight() + nested_content
.getScrollY()));
if (diff == 0)
{
if (merchantList.size()>0)
{
if (!is_loading)
{
if(current_page<=all_pages)
{
// nestedscrollview at end
getMerchants(current_page);
}
}
}
}
}
});
I have a fragment containing a LinearLayout containing a webview, when a change the html string in my webview, sometimes the background of my LinearLayout doesn't appear.
My fragment:
`
<ScrollView 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:scrollbarStyle="outsideOverlay"
tools:context=".NewsFragment" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#drawable/bg_item_single"
android:orientation="vertical"
android:padding="#dimen/list_margin" >
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:textColor="#000"
android:textSize="20sp" />
<WebView
android:id="#+id/webview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/transparent" />
</LinearLayout>
</LinearLayout>
</ScrollView>
`
If I have a linearLayout in a other linearLayout is just to have a space on the bottom of my scrollView, isn't the problem.
My code:
`
private void populate() {
textView.setText(grant.getName());
// Configure w`enter code here`ebview
webview.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
webview.getSettings().setJavaScriptEnabled(false);
webview.setBackgroundColor(Color.argb(1, 0, 0, 0));
webview.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
return (event.getAction() == MotionEvent.ACTION_MOVE);
}
});
webview.loadDataWithBaseURL("file:///android_asset/", createFullHtmlPage("styles.css", grant.getGrantDescription(), 0), "text/html", "UTF-8", null);
}
`
I don't see were is the problem.
Try setting android:layout_height="wrap_content", and remove the transparent background of this view.
<WebView
android:id="#+id/webview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/transparent" />
I fixed my problem. I used a shape as background of my LinearLayout, but if the webview is too big, for unknown reason, the shape don't work and don't appear. Therefore now I use a color background and 2 imageview for creat a bottom corner and top corner.
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbarStyle="outsideOverlay"
tools:context=".NewsFragment" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="50dp" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:orientation="vertical" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/bg_item_top" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/bg_item_default"
android:orientation="vertical" >
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:textColor="#000"
android:textSize="20sp" />
<WebView
android:id="#+id/webview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/list_margin" />
</LinearLayout>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/bg_item_bottom" />
</LinearLayout>
</LinearLayout>
</ScrollView>
How I undestud problem is in this line
webview.setBackgroundColor(Color.argb(1, 0, 0, 0));
try this
webview.setBackgroundResource(color.blue);
By default, in my current layout, there are two TextViews at the top and one ImageView at the bottom. I would like to change this by having the ImageView to be at the top and the TextViews be at the bottom using Java. Please help.
<?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:orientation="vertical"
android:weightSum="2" >
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:weightSum="2" >
<TextView
android:id="#+id/tvText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/text_view"
android:gravity="center"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textSize="13dp"
android:textStyle="bold" />
<TextView
android:id="#+id/tvText2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:layout_weight="1"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#drawable/text_view"
android:textSize="13dp"
android:textStyle="bold"
/>
</LinearLayout>
</FrameLayout>
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<ImageView
android:id="#+id/ivImage"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="#drawable/text_view"
android:scaleType="fitXY" />
</LinearLayout>
</FrameLayout>
</LinearLayout>
Here is what i have done :i have added 2 more frame layout in xml and
when u click the first text view it will change the view i mean the
above frame layout and will show next two.Hope this helps u
public class MainActivity extends Activity
{
LinearLayout ll;
TextView tv;
FrameLayout ff2, ff1, ff3, ff4;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ff1 = (FrameLayout) findViewById(R.id.lay1);
ff2 = (FrameLayout) findViewById(R.id.lay2);
ff3 = (FrameLayout) findViewById(R.id.lay3);
ff4 = (FrameLayout) findViewById(R.id.lay4);
ff3.setVisibility(View.GONE);
ff4.setVisibility(View.GONE);
tv = (TextView) findViewById(R.id.tvText);
tv.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
ff1.setVisibility(View.GONE);
ff2.setVisibility(View.GONE);
ff3.setVisibility(View.VISIBLE);
ff4.setVisibility(View.VISIBLE);
Toast.makeText(getApplicationContext(), "layout change",
Toast.LENGTH_LONG).show();
}
});
}
}
Here is the layout file :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="2" >
<FrameLayout
android:id="#+id/lay1"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:weightSum="2" >
<TextView
android:id="#+id/tvText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/weed2"
android:gravity="center"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textSize="13dp"
android:textStyle="bold" />
<TextView
android:id="#+id/tvText2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/weed2"
android:gravity="center"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textSize="13dp"
android:textStyle="bold" />
</LinearLayout>
</FrameLayout>
<FrameLayout
android:id="#+id/lay2"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<ImageView
android:id="#+id/ivImage"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="#drawable/ic_launcher"
android:scaleType="fitXY" />
</LinearLayout>
</FrameLayout>
<FrameLayout
android:id="#+id/lay3"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<ImageView
android:id="#+id/ivImage"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="#drawable/ic_launcher"
android:scaleType="fitXY" />
</LinearLayout>
</FrameLayout>
<FrameLayout
android:id="#+id/lay4"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:weightSum="2" >
<TextView
android:id="#+id/tvText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/weed2"
android:gravity="center"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textSize="13dp"
android:textStyle="bold" />
<TextView
android:id="#+id/tvText2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/weed2"
android:gravity="center"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:textSize="13dp"
android:textStyle="bold" />
</LinearLayout>
</FrameLayout>
</LinearLayout>