If footer view added in ListView, then divider disappears from last item of ListView.
Even I have set android:footerDividersEnabled="true" with ListView and my footer view is just TextTiew.
Setting isSelectable to true didn't work for me, maybe because I was also calling removeFooterView when my list was done loading.
What finally fixed it for me was setting android:layout_height to "fill_parent" instead of "wrap_content" on the ListView.
The ListView implementation in Android never draws dividers between items that are disabled, which if you are just calling the addFooterView(View v) method then by default your footer will be.
Instead you need to call the addFooterView(View v, Object data, boolean isSelectable) method with isSelectable set to true. You can just pass null for the data object if you don't need it.
This almost worked for me. I was after a divider after the last list item, but not after the footer as my footer was empty space. I ended up adding two footers, one selectable of zero height and one not selectable containing the padding.
TextView view = new TextView(this);
view.setLines(0);
TextView view1 = new TextView(this);
view1.setLines(4);
mListView.addFooterView(view, null, true);
mListView.addFooterView(view1, null, false);
mListView.setFooterDividersEnabled(true);
Try setting the layout_height of the ListView to match_parent:
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#333333"
android:dividerHeight="1px"
When the layout_height is set to wrap_content it might skip the bottom divider:
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="#333333"
android:dividerHeight="1px"
Head through the wall approach, but reliable, is to manually add divider as a footer view.
ListView myListView = (ListView) view.findViewById(R.id.my_list_view);
myListView.addFooterView(getInflater().inflate(R.layout.horizontal_divider, myListView, false), null, false);
myListView.addFooterView(getInflater().inflate(R.layout.the_original_footer_view, myListView, false), null, false);
Where the layout file would look like this:
<View xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="1px"
android:background="?android:attr/dividerVertical" />
This approach can be used to add the divider easily even after the last footer, regardless it is selectable, enabled or anything - it just stays there.
Note the height is 1px rather than 1dp. Though against all recommendations, at least at the device I tested this gives the same divider height as ListView, while 1dp does not.
Related
i have a ListView whose children toggle visibility on clicked. Each item has two children and only one is visible at a time, the other is gone, If the item is clicked the visibilities of its children are toggled.
The quite unfortunate thing is that one child is taller than the other so the height of the listview needs to be altered at each toggle but this doesn't happen. The height stays fixed.
I have tried playing with LayoutParams but got nothing out of it.
How can I fix this?
After a lot and a lot of trial and error, I managed to get this to work simple by altering the LayoutParams of the listview after changing the visibility of the views.
view.setVisibility(View.GONE);
LinearLayout layout = (LinearLayout) view.getParent();
layout.getChildAt(0).setVisibility(View.VISIBLE);
((ListView) layout.getParent()).getLayoutParams().height =
LinearLayout.LayoutParams.MATCH_PARENT;
Note that an item in my ListView looks like this
<LineaLayout>
<LinearLayout
onclick="alterVisibility">
</LinearLayout>
<LinearLayout
onclick="alterVisibility"
visibility="gone">
</LinearLayout>
</LinearLayout>
I'm having some problems when trying to remove the header from a listView. At first I use addHeaderView() to add it, but when I change to another layout I want it to disappear but removeHeaderView() doesn't work...
I also tried setting visibility to GONE and it doesn't disappear...
What can I do?
Thanks in advance
Try the approach mentioned below..
Android ListView#addHeaderView and ListView#addFooterView methods are strange: you have to add the header and footer Views before you set the ListView's adapter so the ListView can take the headers and footers into consideration -- you get an exception otherwise. Here we add a ProgressBar (spinner) as the headerView:
// spinner is a ProgressBar
listView.addHeaderView(spinner);
We'd like to be able to show and hide that spinner at will, but removing it outright is dangerous because we'd never be able to add it again without destroying the ListView -- remember, we can't addHeaderView after we've it's adapter:
listView.removeHeaderView(spinner); //dangerous!
So let's hide it! Turns out that's hard, too. Just hiding the spinner view itself results in an empty, but still visible, header area.
Now try to hide the spinner:
spinner.setVisibility(View.GONE);
Result: header area still visible with an ugly space:
The solution is to put the progress bar in a LinearLayout that wraps it's content, and hiding the content. That way the wrapping LinearLayout will collapse when its content is hidden, resulting in a headerView that is technically still present, but 0dip high:
<LinearLayout
xmlns:a="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<!-- simplified -->
<ProgressBar
android:id="#+id/spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
Then, set the layout as the header:
spinnerLayout = getLayoutInflater().inflate(R.layout.header_view_spinner, null);
listView.addHeaderView(spinnerLayout);
And when we need to hide it, hide the layout's content, not the layout:
spinnerLayout.findViewById(R.id.spinner).setVisibility(View.GONE);
Now the header disappears from view. No more ugly space at the top!
Most people don't like to use AddHeaderView, however I sometimes found it very convenient, to avoid modifying complex adapters, or if the headers are not very related to them.
With this easy trick you will be able to seamlessly remove/add headers:
I add an empty LinearLayout with orientation vertical, and height wrap_content, as the only Header View (let mListView be the target listView):
LinearLayout mCustomHeaders=new LinearLayout(context);
mCustomHeaders.setOrientation(LinearLayout.VERTICAL);
mListView.addHeaderView(mCustomHeaders);
mListView.setAdapter (.......)
Thenafter, I can add random stuff, anywhere, to the list as header, even when the list is full:
mCustomHeaders.add(myHeaderView1);
mCustomHeaders.add(myHeaderView2);
mCustomHeaders.add(myHeaderView3);
You can also delete all headers, anytime:
mCustomHeaders.removeAllViews(); // will erase all headers
You get the idea .... Hope it helps !
The problem is that you are always creating a new object when you do:
View headerView = someView
So the new view is not the same as the view already added as listView header, try this:
View headerView = inflater.inflate(R.layout.adapter_datatable_saleitem_header, null, false);
headerView.setTag(this.getClass().getSimpleName() + "header");
if (listView.getHeaderViewsCount() > 0) {
View oldView = listView.findViewWithTag(this.getClass().getSimpleName() + "header");
if (oldView != null) {
listView.removeHeaderView(oldView);
}
}
You can check if header count > 0 then remove the header and add it again.
its works fine for me.
View _headerView;
private void function HandleHeaderView(){
if(listView.getHeaderViewsCount() > 0)
{
listView.removeHeaderView(_headerView);
}
/* Add list view header */
_headerView = GetHeaderView();
listView.addHeaderView(_headerView);
}
private View GetHeaderView()
{
View header = getLayoutInflater().inflate(R.layout.header_layout, null);
// TODO: ...
return header
}
Where drawerLogoView is my headerview, here's what I do:
drawerLogoView = mInflater.inflate(R.layout.navigation_drawer_custom_layout, null);
mDrawerList.addHeaderView(drawerLogoView,null,false);
LinearLayout layOut = ((LinearLayout)drawerLogoView.findViewById(R.id.NavProfilePreviewLayout));
layOut.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, 0));
That way, it becomes invisible :D
To show it back, you can use this:
LinearLayout layOut = ((LinearLayout)drawerLogoView.findViewById(R.id.NavProfilePreviewLayout));
layOut.setLayoutParams(newRelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT));
If you are using addHeaderView(), you can't delete your header after that.
So, don't use addHeaderView(). Rather, create your own adapter that
blends your main roster of Views with your header. While my
MergeAdapter will not handle your specific case, you can use it to see
the concept of blending multiple row sources:
https://github.com/commonsguy/cwac-merge
I encountered this problem in a slightly disguised scenario: the ListView I was dealing with came from PreferenceFragment, and the header represents a PreferenceCategory. So, my freedom of setting up the ListView was severely limited. But there were two approaches (partly inspired by other answers on this page). One was to add a custom layout to my PreferenceCategory (using a class that extends android.preference.PreferenceCategory, see Custom PreferenceCategory Headings). But I found an easier workaround: for the first Preference in this PreferenceCategory, I override onCreateView():
#Override public View onCreateView(ViewGroup parent) {
parent.setTop(-parent.getChildAt(0).getTop());
return super.onCreateView(parent);
}
I have a list whose height is set to "fill parent". everything works fine but my last item in list touches the bottom of my screen. how can i get some space below my last list item.
You can add an empty view as footer: http://developer.android.com/reference/android/widget/ListView.html#addFooterView(android.view.View)
AFAIK there's no way to do that only with XML, you can declare the footer in XML and inflate, or create programmatically
Here is a 3-liner to add a spacer programmatically:
View listFooter = new View(this);
listFooter.setLayoutParams(new AbsListView.LayoutParams(AbsListView.LayoutParams.FILL_PARENT, 70)));
listView.addFooterView(listFooter);
uhmm.. seeing that you don't want padding, print a blank line (or transparent text) on a textview located after your listview. Or print a "extra" item on your listview.
you could use the Space widget
<android.support.v4.widget.Space
android:layout_width="match_parent"
android:layout_height="10dp"/>
can simply set the margin in the list ............
if need only bottom margin then use : android:layout_marginBottom=
I've created an android application with a ListView. I've added both a header and footer to the list. But when adding a divider/separator it also creates an empty space between the header and the first ListView item. It does the same for the last ListView item and the footer.
The empty space is equivalent to the size of the divider between all the ListView items, with the difference that it doesn't draw the divider and just leaves empty space. I thought I found the solution with the xml attributes 'Footer dividers enabled' and 'Header dividers enabled'. But when setting them to false, it doesn't change anything. I even tried to set them programmatically with
list.setFooterDividerEnabled(false);
list.setHeaderDividerEnabled(false);
But it just doesn't work. Any way to fix that problem? I just don't want the empty space to be there, I want the first item to fit exactly to the header (same for the footer).
I stumbled upon the same problem, but in a slightly different situation than yours. My ListView has a header (a search box), but the first item below it contains a section header (a date, or a letter) rather than being a regular list item (with the actual content in form of an image, some text, and so on). As such, I want it not to be selectable, so in my custom adapter I have overridden areAllItemsEnabled to return false.
Big mistake, because that's exactly the culprit. See, it appears that, by design, the ListView implementation only draw dividers between two enabled items, but still reserve space for dividers between an enabled item and a disabled one even if those dividers will not be drawn. The fact this is a conscious design decision does not mean it's not stupid, of course. Most weird of all, this dividers drawing policy is based just on the value returned by areAllItemsEnabled instead of the values returned by single calls to isEnabled for subsequent items.
Thus, to work around it, I just had to return true from areAllItemsEnabled (I kept the overridden method and add a comment about this issue, otherwise I would not be able to remember it a month from now): lo and behold, white space disappeared, replaced by a divider. Now, if I want to show the ListView header and the first section header as being exactly adjacent, I just have to choose a divider color that's the same as the section header color.
Really hope that's the same case as yours, or that my solution helps you in some other way.
I tried a solution by 幻影浪子 that works (based on android-pulltorefresh):
View Layout (header.xml):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<RelativeLayout
android:id="#+id/content"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<ProgressBar
style="#android:style/Widget.ProgressBar.Small.Inverse"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_margin="16dp"
android:layout_marginTop="2dp" />
</RelativeLayout>
</LinearLayout>
Inflating View:
m_headerView = inflater.inflate(R.layout.header, this, false);
Displaying View:
m_headerView.setPadding(0, 0, 0, 0);
m_headerView.setVisibility(View.VISIBLE);
Hiding View:
m_headerView.setPadding(0, -1000, 0, 0);
m_headerView.setVisibility(View.GONE);
It worked perfectly in our project. I hope it is helpful.
In getview method you can check if the item is first or last and set custom devider which will be of 0 height or single pixel height of transparent color.
goto the ListView properties in android layout and search for spacing tag... some how in android, when creating new layouts, it will defaults creation is spacing header spacing and border properties. check it , if it is available then remove it
Didn't find a great solution.
Set dividerHeight="0dp" and created my own dividers manually - either directly in the layout XML or dynamically in the adapter if you need more precise control.
Just do
list.setDividerHeight(0)
That should take care of it.
I have a listview for display message, and I wanna add footerview to show loadmore button, if the listview set android:layout_height="fill_parent" it works normally, but I need to give it an absolute value to set listview height such as android:layout_height="400dip" so as to avoid getview method repeat calling , and then the footerview width can’t match parent.
Set the list view layout_height="fill_parent" and layout_weight="1", then anything that you put under it will have space.