I'd like to use listview with custom adapter and it dynamically changing.
There is that i want (element above ListView must be scrolled):
I found two main ways to do it:
use ScrollView and code with listView.measure(0,0); to dynamically set up the listview height (but it doesn't work, listview is cropped);
For example: listView have 3 items, but it height is for 2 items (1 item is hidden);
don't use ScrollView, use a setHeaderView (but it doesn't work too, ListView don't have a scrolling)
Any idea?
Use custom ListView ExpandableHeightListView here
import android.content.Context;
import android.util.AttributeSet;
import android.view.ViewGroup;
import android.widget.ListView;
public class ExpandableHeightListView extends ListView
{
boolean expanded = false;
public ExpandableHeightListView(Context context)
{
super(context);
}
public ExpandableHeightListView(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public ExpandableHeightListView(Context context, AttributeSet attrs,int defStyle)
{
super(context, attrs, defStyle);
}
public boolean isExpanded()
{
return expanded;
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
// HACK! TAKE THAT ANDROID!
if (isExpanded())
{
// Calculate entire height by providing a very large height hint.
// But do not use the highest 2 bits of this integer; those are
// reserved for the MeasureSpec mode.
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
else
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setExpanded(boolean expanded)
{
this.expanded = expanded;
}
}
use
list.setExpanded(true);
in onCreate() method.
i have a fragment in one of my apps who looks pretty much the same..
and I had the same problem as you, what I did in my case was set up the size for each of my list view cells at a fixed size. and measure the height by that logic.
not sure if that's considered the best way to achieve that, but it worked for me.
filterListView.getLayoutParams().height = (searchLabelsList.size() * (int) (43 * getScale() + 0.5f)) + (filterListView.getDividerHeight() * (searchLabelsList.size() - 1));
filterListView.setAdapter(searchLabelsAdapter);
and in the formula, 43 is the height for each cell, in dp's of course.
getScale is a method I wrote to get the scale of the screen size of the current user phone:
private float scale;
private float getScale() {
if (scale == 0) {
if (getActivity() != null) {
scale = getActivity().getResources().getDisplayMetrics().density;
}
}
return scale;
}
hope this will help, any question feel free to ask :)
good luck
You can try this:
First : In your xml put all other views inside ScrollView including ListView
<ScrollView
android:id="#+id/scrollViewId"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
// Add your other views over here....
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</ScrollView>
Second : In your java file,
Just use this custom method setListViewHeightBasedOnChildren(listview)
How ??
list = (ListView) findViewById(R.id.listview);
list.setAdapter(YOUR CUSTOM ADAPTER);
setListViewHeightBasedOnChildren(list);
Here is your custom method.
public static void setListViewHeightBasedOnChildren(ListView listView)
{
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null)
return;
int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.UNSPECIFIED);
int totalHeight=0;
View view = null;
for (int i = 0; i < listAdapter.getCount(); i++)
{
view = listAdapter.getView(i, view, listView);
if (i == 0)
view.setLayoutParams(new ViewGroup.LayoutParams(desiredWidth,
LayoutParams.MATCH_PARENT));
view.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
totalHeight += view.getMeasuredHeight();
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + ((listView.getDividerHeight()) * (listAdapter.getCount()));
listView.setLayoutParams(params);
listView.requestLayout();
}
Hope this helps you somehow.
Related
I have an ExpandableListView inside a NestedScrollView (yes I know, it is not good to have a scrolling view inside another scrolling view but I don't know what else to do, please do tell me if anybody knows a better approach).
The size of the content in NestedScrollView is still within the screen so it won't scroll, but when ExpandableListView is expanded, the content will leak outside the screen but the NestedScrollView still won't scroll.. Why is this so?
Here's my NestedScrollView layout :
<NestedScrollView>
<LinearLayout>
<LinearLayout></LinearLayout>
... // About 3 of the LinearLayouts
<ExpandableListView/>
</LinearLayout>
</NestedScrollView>
You can use NonScrollExpandableListView you can achieve non-scroll property of any Lisview or GridView or ExpandableListView by overriding following method.
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
So for using NonScrollExpandableListView you need to make one custom class.
public class NonScrollExpandableListView extends ExpandableListView {
public NonScrollExpandableListView(Context context) {
super(context);
}
public NonScrollExpandableListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public NonScrollExpandableListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
}
And use it like.
<com.example.extraclasses.NonScrollExpandableListView
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Happy coding.
Add android:nestedScrollingEnabled="true" to your ExpandalbleListView layout.
The answer from V-rund Puro-hit is what worked for me. But it took some modifications to work with Kotlin supporting API >19. So for the purpose of saving someone time, here it is:
Create a new class file NonScrollExpandableListView:
import android.content.Context
import android.util.AttributeSet
import android.widget.ExpandableListAdapter
import android.widget.ExpandableListView
class NonScrollExpandableListView : ExpandableListView {
constructor(context: Context) : super(context) {}
constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {}
constructor(context: Context, attrs: AttributeSet, defStyle: Int) : super(context, attrs, defStyle) {}
override fun setAdapter(adapter: ExpandableListAdapter?) {
super.setAdapter(adapter)
}
override fun setOnChildClickListener(onChildClickListener: OnChildClickListener) {
super.setOnChildClickListener(onChildClickListener)
}
override fun expandGroup(groupPos: Int) : Boolean {
return super.expandGroup(groupPos)
}
override fun expandGroup(groupPos: Int, animate: Boolean) : Boolean {
return super.expandGroup(groupPos, animate)
}
override fun isGroupExpanded(groupPosition: Int): Boolean {
return super.isGroupExpanded(groupPosition)
}
public override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
val heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
Integer.MAX_VALUE shr 2, MeasureSpec.AT_MOST)
super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom)
val params = layoutParams
params.height = measuredHeight
}
}
...and I use it like so:
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<com.example.you.kotlinlistview.NonScrollExpandableListView
android:id="#+id/expandableCategories"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
<Button
android:id="#+id/add_new_feed"
android:drawableStart="#drawable/ic_add"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="Add new feed"
/>
<Button
android:id="#+id/settings_button"
android:drawableStart="#drawable/ic_settings"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="Settings"
/>
<Button
android:id="#+id/logout_button"
android:drawableStart="#drawable/ic_exit"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="Log Out"
/>
</LinearLayout>
</ScrollView>
As a result, I can comfortably add buttons and other elements to NavigationView side drawer) and it all works nicely in one common ScrollView. Main usage here is when you need to combine multiple ListViews and ExpandableListViews inside the one common ScrollView which would take care of scrolling.
Use this method this will calculate the ExpendableListSize at run time.
private void setListViewHeight(ExpandableListView listView,
int group) {
ExpandableListAdapter listAdapter = (ExpandableListAdapter) listView.getExpandableListAdapter();
int totalHeight = 0;
int desiredWidth = View.MeasureSpec.makeMeasureSpec(listView.getWidth(),
View.MeasureSpec.EXACTLY);
for (int i = 0; i < listAdapter.getGroupCount(); i++) {
View groupItem = listAdapter.getGroupView(i, false, null, listView);
groupItem.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
totalHeight += groupItem.getMeasuredHeight();
if (((listView.isGroupExpanded(i)) && (i != group))
|| ((!listView.isGroupExpanded(i)) && (i == group))) {
for (int j = 0; j < listAdapter.getChildrenCount(i); j++) {
View listItem = listAdapter.getChildView(i, j, false, null,
listView);
listItem.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
totalHeight += listItem.getMeasuredHeight();
}
}
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
int height = totalHeight
+ (listView.getDividerHeight() * (listAdapter.getGroupCount() - 1));
if (height < 10)
height = 200;
params.height = height;
listView.setLayoutParams(params);
listView.requestLayout();
}
An call this method in your setOnGroupClickListener.like below
mExpandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
#Override
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
setListViewHeight(parent, groupPosition);
return false;
}
});
We can't use listview, gridview or expandable listview inside scrollview. If you wan't to use expandable listview inside scrollview then you have to give some fixed height to your expandable listview.
I have a GridView with variable height cells. I want the row to be as high as all the largest cell in the row. I am able to adjust the cell heights to be consistent on a row, but I cannot set the Height of the GridView and have it actually change.
Another problem is that this GridView is in a ScrollView, so having a scroll bar is out of the question.
This is a problem because the way the GridView determines the height of the entire Grid is to take the first cell and multiply it by the number of rows. This is an obvious problem if the rows can have different heights. For example:
I have tried numerous ways to update it, but I am sure I am missing something simple. I am trying to do the update in a ViewTreeObserver so I know that the GridView has rendered so my calcs are correct (and they are). The code:
ViewTreeObserver treeListener = mGridView.getViewTreeObserver();
treeListener.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#SuppressLint("NewApi")
#SuppressWarnings("deprecation")
#Override
public void onGlobalLayout() {
if(Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
mGridView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
else {
mGridView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
// Calculate the new height we want for the GridView
int newHeight = determineCellHeight(mGridView, mNumberOfColumns, mRows);
ViewGroup.LayoutParams params = mGridView.getLayoutParams();
params.height = newHeight;
mGridView.setLayoutParams(params);
// Have tried all of these too!!!
// mAdapter.notifyDataSetChanged();
// mGridView.requestLayout();
// mGridView.invalidateViews();
// mGridView.refreshDrawableState();
// mGridView.setLayoutParams(new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, newHeight + 10));
// mGridView.setLayoutParams(new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, newHeight + 10));
// View lastChild = mGridView.getChildAt( mGridView.getChildCount() - 1 );
// mGridView.setLayoutParams( new LinearLayout.LayoutParams( LayoutParams.MATCH_PARENT, lastChild.getBottom() ) );
// mAdapter.notifyDataSetChanged();
// mGridView.invalidateViews();
// mGridView.setMinimumHeight(newHeight);
// mGridView.requestLayout();
// mGridView.refreshDrawableState();
}
});
I am beginning to wonder if this is even possible, though the numerous Stackflows seem to suggest it is...
I did come across this problem too several months ago, so there's an easy solution. You need to subclass your own GridView, and override the "onMeasure()" method so as to calculate the actual height of your needs. Here is the implementation.
public class ExpandableHeightGridView extends GridView {
boolean expanded = false;
public ExpandableHeightGridView(Context context) {
super(context);
}
public ExpandableHeightGridView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ExpandableHeightGridView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
}
public boolean isExpanded() {
return expanded;
}
public void setExpanded(boolean expanded) {
this.expanded = expanded;
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (isExpanded()) {
int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
} else {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
}
Hope it helps.
I want to integrate listview inside scrollview so below is my code
xml file
<ScrollView
android:id="#+id/scl_add_task"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone" >
<RelativeLayout
android:id="#+id/rel_hjistory"
android:layout_width="fill_parent"
android:layout_below="#+id/img_save"
android:visibility="gone"
android:layout_height="fill_parent" >
<ListView
android:id="#+id/list_history"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:dividerHeight="2dp"
android:layout_marginTop="5dp"
android:cacheColorHint="#android:color/transparent"
android:divider="#f2f2f2"
android:layerType="software"
android:numColumns="1"
android:verticalSpacing="5dp"
android:visibility="visible" />
<TextView
android:id="#+id/img_post"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/list_history"
android:layout_centerHorizontal="true"
android:text="POST"
android:padding="10dp"
android:background="#drawable/rect_orange"
android:textStyle="bold"
android:textColor="#android:color/white"
android:textSize="#dimen/text_15"
android:visibility="visible" />
</RelativeLayout>
</ScrollView>
When i run my code it look like below images
list view getting very small in height i want to it full height with full screen scroll.
public class ExpandableHeightListView extends ListView {
boolean expanded = false;
public ExpandableHeightListView(Context context)
{
super(context);
}
public ExpandableHeightListView(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public ExpandableHeightListView(Context context, AttributeSet attrs,
int defStyle)
{
super(context, attrs, defStyle);
}
public boolean isExpanded()
{
return expanded;
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
// HACK! TAKE THAT ANDROID!
if (isExpanded())
{
// Calculate entire height by providing a very large height hint.
// View.MEASURED_SIZE_MASK represents the largest height possible.
int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
else
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setExpanded(boolean expanded)
{
this.expanded = expanded;
}
}
hope this works for you..
use this method.
public static void setListViewHeightBasedOnChildren(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
// pre-condition
return;
}
int totalHeight = listView.getPaddingTop() + listView.getPaddingBottom();
for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
if (listItem instanceof ViewGroup) {
listItem.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
}
listItem.measure(0, 0);
totalHeight += listItem.getMeasuredHeight();
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
listView.setLayoutParams(params);
}
this method will calculate total item hieght of view from adapter and set it to the listview
i dont remember from where i had got this solution or else i would have posted link of that answer. anyways thanx to that guy.
Replace the Listview with linearlayout<LinearLayout
android:id="#+id/listdemo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"></LinearLayout>
in your code you u have to addd this method
private void customListview() {
LinearLayout linearLayout = (LinearLayout)findViewById(R.id.listdemo);
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
for (int i = 0; i <20 ; i++) {
View view = inflater.inflate(R.layout.item_recyclerview,null);
linearLayout.addView(view);
}
}`
item_recycleview is your layout of a single item of the list
count now set as 20 u can set as your wish
You should use a LinearLayout set to vertical orientation instead of a ListView.
Normally a ListView is used for displaying a dynamic number of items given to it by an Adapter and the ListView will handle the scrolling for the items. When you put a ListView inside a ScrollView then both widgets will be in conflict over who handles the scrolling.
Setting the height of a ListView to WRAP_CONTENT doesn't work, because it has a dynamic number of items. The ListView wants to have a static height (such as MATCH_PARENT or 400dp) and will scroll when needed and even create the item views on the fly when they become visible.
So use a LinearLayout and load it with child views yourself.
<LinearLayout
android:id="#+id/list_history"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
... snipped other attribs ... />
Since you already have an adapter that provides the views for the ListView you can use that to populate your LinearLayout:
adapter = new YourAdapter();
LinearLayout historyList = (LinearLayout) findViewById(R.id.list_history);
for (int position = 0; position < adapter.getCount(); position += 1) {
View itemView = adapter.getView(position, null, historyList);
historyList.addView(itemView);
}
Note: this is only a good solution if you know that your adapter will never provide a large number of items because you would then load your LinearLayout with a large number of views and things will grind to a halt or even crash.
If you cannot have a small number of items at all times then you will need to change your user interface. Perhaps you can just display the first 10 items only and when clicked go to a new activity that shows them all in a proper listview.
Okay, another answer based on your comment: "I want to display list item data without scrolling problem both scroll should be separate."
Set your ListView's height to a fixed amount:
<ListView
android:id="#+id/list_history"
android:layout_width="fill_parent"
android:layout_height="200dp"
... snipped other attribs ... />
This will allow the ScrollView to actually scroll the ListView and the ListView to scroll its own children.
Putting listview in scrollview is not a good idea.
Add a listview header instead.
create new layout and put everything you have on top of listview in there.
Then inflate the layout and add it as listview header:
listView = view.FindViewById<ListView> (R.Id.ListView);
var header = inflater.inflate(R.layout.header, null);
listView.AddHeaderView (header);
The only solution that worked for me was here:
londatiga.net/it/programming/android/make-android-listview-gridview-expandable-inside-scrollview/
which says (quotes):
package net.londatiga.android.widget;
import android.util.AttributeSet;
import android.view.ViewGroup;
import android.widget.ListView;
import android.content.Context;
public class ExpandableHeightListView extends ListView
{
boolean expanded = false;
public ExpandableHeightListView(Context context)
{
super(context);
}
public ExpandableHeightListView(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public ExpandableHeightListView(Context context, AttributeSet attrs,
int defStyle)
{
super(context, attrs, defStyle);
}
public boolean isExpanded()
{
return expanded;
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
// HACK! TAKE THAT ANDROID!
if (isExpanded())
{
// Calculate entire height by providing a very large height hint.
// But do not use the highest 2 bits of this integer; those are
// reserved for the MeasureSpec mode.
int expandSpec = MeasureSpec.makeMeasureSpec(
Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
else
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setExpanded(boolean expanded)
{
this.expanded = expanded;
}
}
and then use it
myExpandableHeightListView.setExpanded(true);
I know it is a very bad practice that "don't put a ListView into a ScrollView" since ListView has it's own scroll. However, I have couple of other items (buttons and textviews) additional to ListView. For those, I definitely need to use a ScrollView. I found some solution (http://nex-otaku-en.blogspot.com/2010/12/android-put-listview-in-scrollview.html) to prevent collapsing the Listview. But, as i said, I need a ScrollView that encapsulates all items on my XML form. I have added my xml code, Please guide how to achieve this.
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/listView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:choiceMode="singleChoice">
</ListView>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button1" />
</LinearLayout>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/longtext" />
</LinearLayout>
</ScrollView>
ListView by itself is scrollable. Do not put ListView inside a scroll view.
Move your ListView outside scorllview. You can also add a header and footer to the listview.
Check the video by google
https://www.youtube.com/watch?v=wDBM6wVEO70
I found this solution from another post & found it working.
While all other solutions work when the list-items are of same height, this solution still provides perfect result even if the list-items are of variable height.
Use this customized class in the xml & you are good to go.
public class NestedListView extends ListView implements OnTouchListener, OnScrollListener {
private int listViewTouchAction;
private static final int MAXIMUM_LIST_ITEMS_VIEWABLE = 99;
public NestedListView(Context context, AttributeSet attrs) {
super(context, attrs);
listViewTouchAction = -1;
setOnScrollListener(this);
setOnTouchListener(this);
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if (getAdapter() != null && getAdapter().getCount() > MAXIMUM_LIST_ITEMS_VIEWABLE) {
if (listViewTouchAction == MotionEvent.ACTION_MOVE) {
scrollBy(0, -1);
}
}
}
#Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int newHeight = 0;
final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
if (heightMode != MeasureSpec.EXACTLY) {
ListAdapter listAdapter = getAdapter();
if (listAdapter != null && !listAdapter.isEmpty()) {
int listPosition = 0;
for (listPosition = 0; listPosition < listAdapter.getCount()
&& listPosition < MAXIMUM_LIST_ITEMS_VIEWABLE; listPosition++) {
View listItem = listAdapter.getView(listPosition, null, this);
//now it will not throw a NPE if listItem is a ViewGroup instance
if (listItem instanceof ViewGroup) {
listItem.setLayoutParams(new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
}
listItem.measure(widthMeasureSpec, heightMeasureSpec);
newHeight += listItem.getMeasuredHeight();
}
newHeight += getDividerHeight() * listPosition;
}
if ((heightMode == MeasureSpec.AT_MOST) && (newHeight > heightSize)) {
if (newHeight > heightSize) {
newHeight = heightSize;
}
}
} else {
newHeight = getMeasuredHeight();
}
setMeasuredDimension(getMeasuredWidth(), newHeight);
}
#Override
public boolean onTouch(View v, MotionEvent event) {
if (getAdapter() != null && getAdapter().getCount() > MAXIMUM_LIST_ITEMS_VIEWABLE) {
if (listViewTouchAction == MotionEvent.ACTION_MOVE) {
scrollBy(0, 1);
}
}
return false;
}
}
You can use the Expandable Listview for using the listview inside the scrollview, it will expends the listview as long the content length, create a Custom class with name ExpandableHeightListView
package com.knight.utils;
import android.content.Context;
import android.util.AttributeSet;
import android.view.ViewGroup;
import android.widget.ListView;
public class ExpandableHeightListView extends ListView
{
boolean expanded = false;
public ExpandableHeightListView(Context context)
{
super(context);
}
public ExpandableHeightListView(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public ExpandableHeightListView(Context context, AttributeSet attrs,int defStyle)
{
super(context, attrs, defStyle);
}
public boolean isExpanded()
{
return expanded;
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
// HACK! TAKE THAT ANDROID!
if (isExpanded())
{
// Calculate entire height by providing a very large height hint.
// But do not use the highest 2 bits of this integer; those are
// reserved for the MeasureSpec mode.
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
else
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setExpanded(boolean expanded)
{
this.expanded = expanded;
}
}
After that Programmatically add this line into your code, it will expend the listview in side the scrollview,
Listview listview=(Listview)findviewbyid(R.id.listview1);
((ExpandableHeightListView)listview).setExpandable(true);
I'm having a little difficulties while trying to get a certain layout to work: I want to have list. List does not have to be scrollable, but should be shown completely. But the page itself should be able to scroll (with the lists in it), if the total content ist higher than the screen.
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linear_layout"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#ff181818"
>
<Textview android:id="#+id/my_text" text="header contents goes here" android:layout_width="fill_parent" android:layout_height="wrap_content"/>
<Textview android:id="#+id/headertext" text="header contents goes here" android:layout_width="fill_parent" android:layout_height="wrap_content"/>
<ListView
android:id="#+id/my_list1"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
</LinearLayout>
</ScrollView>
it only uses a small part of the screen (about 2 lines per list), instead of filling the available height, and the lists themselves can be scrolled. How can I change the layout to always show the whole lists but have the screen be scrollalbe?
The solution I used is to replace ListView with LinearLayout. You can create all your items inside LinearLayout, they will all be displayed. So there's really no need to use ListView.
LinearLayout list = (LinearLayout)findViewById(R.id.list_recycled_parts);
for (int i=0; i<products.size(); i++) {
Product product = products.get(i);
View vi = inflater.inflate(R.layout.product_item, null);
list.addView(vi);
}
As #Alex noted in the accepted answer that LinearLayout is hardly a replacement. I had a problem where LinearLayout was not an option, that's when i came across this blog. I will put the code here for reference purposes. Hope it helps someone out there!
public class UIUtils {
/**
* Sets ListView height dynamically based on the height of the items.
*
* #param listView to be resized
* #return true if the listView is successfully resized, false otherwise
*/
public static boolean setListViewHeightBasedOnItems(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter != null) {
int numberOfItems = listAdapter.getCount();
// Get total height of all items.
int totalItemsHeight = 0;
for (int itemPos = 0; itemPos < numberOfItems; itemPos++) {
View item = listAdapter.getView(itemPos, null, listView);
item.measure(0, 0);
totalItemsHeight += item.getMeasuredHeight();
}
// Get total height of all item dividers.
int totalDividersHeight = listView.getDividerHeight() *
(numberOfItems - 1);
// Set list height.
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalItemsHeight + totalDividersHeight;
listView.setLayoutParams(params);
listView.requestLayout();
return true;
} else {
return false;
}
}
}
Usage:
//initializing the adapter
listView.setAdapter(adapter);
UIUtils.setListViewHeightBasedOnItems(listView);
//whenever the data changes
adapter.notifyDataSetChanged();
UIUtils.setListViewHeightBasedOnItems(listView);
You can make your own customlistview. (It can extends ListView/ExpandableListView/GridView) and override the onMeasure method with this. With this you'll never need to call a function or anything. Just use it in your xml.
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}
I had a ListView in my layout and wanted to use a library which can't handle a ListView here because it wraps it into a ScrollView. The best solution for me is based on Fedor´s answer.
Since I already got an ArrayAdapter for the ListView I wanted to re-use it:
LinearLayout listViewReplacement = (LinearLayout) findViewById(R.id.listViewReplacement);
NamesRowItemAdapter adapter = new NamesRowItemAdapter(this, namesInList);
for (int i = 0; i < adapter.getCount(); i++) {
View view = adapter.getView(i, null, listViewReplacement);
listViewReplacement.addView(view);
}
For me this works fine because I just need to display dynamic data varying from 1 to 5 elements. I just had to add my own divider.
If someone still has the problem then you can make customList and add onMesure() method just like I implemented it:
public class ScrolleDisabledListView extends ListView {
private int mPosition;
public ScrolleDisabledListView(Context context) {
super(context);
}
public ScrolleDisabledListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ScrolleDisabledListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
#Override
public boolean dispatchTouchEvent(MotionEvent ev) {
final int actionMasked = ev.getActionMasked() & MotionEvent.ACTION_MASK;
if (actionMasked == MotionEvent.ACTION_DOWN) {
// Record the position the list the touch landed on
mPosition = pointToPosition((int) ev.getX(), (int) ev.getY());
return super.dispatchTouchEvent(ev);
}
if (actionMasked == MotionEvent.ACTION_MOVE) {
// Ignore move events
return true;
}
if (actionMasked == MotionEvent.ACTION_UP) {
// Check if we are still within the same view
if (pointToPosition((int) ev.getX(), (int) ev.getY()) == mPosition) {
super.dispatchTouchEvent(ev);
} else {
// Clear pressed state, cancel the action
setPressed(false);
invalidate();
return true;
}
}
return super.dispatchTouchEvent(ev);
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}
}
Check this out:
ListView ignoring wrap_content
Using android:layout_height and android:layout_weight solved it for me:
<ListView
android:layout_height="0dp"
android:layout_weight="1"
/>
I just did it using setting params of ListView
public static void setListViewHeightBasedOnChildren(ListView listView) {
//this comes from value from xml tag of each item
final int HEIGHT_LARGE=75;
final int HEIGHT_LARGE=50;
final int HEIGHT_LARGE=35;
ViewGroup.LayoutParams params = listView.getLayoutParams();
int screenSize = getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK;
switch(screenSize) {
case Configuration.SCREENLAYOUT_SIZE_LARGE:
params.height =(int) (HEIGHT_LARGE*size);
break;
case Configuration.SCREENLAYOUT_SIZE_NORMAL:
params.height =(int) (HEIGHT_NORMAL*size);
break;
case Configuration.SCREENLAYOUT_SIZE_SMALL:
params.height =(int) (HEIGHT_SMALL*size);
break;
}
listView.setLayoutParams(params);
}
I don't have a static header, but using HussoM's post as a clue, here is what I was able to get to work. In my scenario, the height of the items in the list was non-uniform, due to variable text sentences in each of the items, and I am using wrap_content for the height and match_parent for the width.
public class NonScrollableListView extends ListView {
public NonScrollableListView(Context context) {
super(context);
}
public NonScrollableListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public NonScrollableListView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public NonScrollableListView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
/**
* Measure the height of all the items in the list and set that to be the height of this
* view, so it appears as full size and doesn't need to scroll.
* #param widthMeasureSpec
* #param heightMeasureSpec
*/
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
ListAdapter adapter = this.getAdapter();
if (adapter == null) {
// we don't have an adapter yet, so probably initializing.
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
return;
}
int totalHeight = 0;
// compute the height of all the items
int itemCount = adapter.getCount();
for (int index=0; index<itemCount; index++) {
View item = adapter.getView(index, null, this);
// set the width so it can figure out the height
item.measure(widthMeasureSpec, 0);
totalHeight += item.getMeasuredHeight();
}
// add any dividers to the height
if (this.getDividerHeight() > 0) {
totalHeight += this.getDividerHeight() * Math.max(0, itemCount - 1);
}
// make it so
this.setMeasuredDimension(widthMeasureSpec,
MeasureSpec.makeMeasureSpec(totalHeight, MeasureSpec.EXACTLY));
}
}
If all items has the same height
int totalItemsHeight = baseDictionaries.size() * item.getMeasuredHeight();
int totalDividersHeight = listView.getDividerHeight() * (baseDictionaries.size() - 1);
int totalPadding = listView.getPaddingBottom() + listView.getPaddingTop();
LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) listTranslationWords.getLayoutParams();
lp.height = totalItemsHeight + totalDividersHeight + totalPadding;
listTranslationWords.setLayoutParams(lp);
Iam supprised no one see this.U cant have two scrolls on the same layout. 1st u have a scrollview and then u have a list, i bet u are killing some android good practices there.
If you want a simple solution to this problem without extending ListView class, this is a solution for you.
mListView.post(new Runnable() {
#Override
public void run() {
int height = 0;
for(int i = 0; i < mListView.getChildCount();i++)
height += mListView.getChildAt(i).getHeight();
ViewGroup.LayoutParams lParams = mListView.getLayoutParams();
lParams.height = height;
mListView.setLayoutParams(lParams);
}
});
In my case, I had ListView inside ScrollView and scrollview was shrinking listview by default. So I just add this in my ScrollView and it worked for me
android:fillViewport="true"
Set android:layout_height="fill_parent" in your LinearLayout