ListView item on form only showing one item

ListView item on form only showing one item - android

I have a form with a number of EditView fields in it. The data for these fields are loaded from a database (in the onCreate() method). The last object on the screen should be a ListView that should show all related data records to the record being show. All the data is correctly loading, and the adapter for this seems to work ok. It loads the correct data, it formats the data correctly into the two-line layout specified by the .xml used by the adapter.
The problem is that the ListView on the screen is "shrunk" to show only one item, and adds a scrollbar if there's more items. I expected the ListView to expand in size to show all records, and the screen itself being scrollable (everything is wrapped inside a ScrollView).
So, the XML looks like this:
<ScrollView
android:layout_height="wrap_content"
android:id="#+id/ScrollView1">
<RelativeLayout
android:layout_height="wrap_content"
android:id="#+id/RelativeLayout1">
<EditView
android:id="#+id/EditView1>
</EditView>
<ListView
android:id="#+id/ListView1
android:layout_height="wrap_content"
android:layout_below="#id/EditView1>
android:divider="#b5b5b5"
android:dividerHeight="1dp" />
I then use a custom BaseAdapter to fill data into the ListView
listView = (ListView) findViewById(R.id.ListView1);
dbRecords = db.getAllRecordsByRecordId(recordId);
CBA_Records adapter = new CBA_Records(this, dbRecords);
listView.setAdapter(adapter);
This is all the same stuff that I've done before, except this is all wrapped inside the scrollview. The reason for this is that there might be more fields than will fit on a smaller screen (or horizontal screen), so the screen must be scrollable. And, the listview must also be there ...
Any suggestions?

A little more onto what invertigo said. ListView inside a ScrollView is not recommended.
Make your ListView the root, and set it's width and height to "match_parent". Put the other stuff that's above the ListView (the header) in a separate xml. Then inflate the new xml file for the header use the addHeaderView() method to add it as a header to the ListView (it looks like you want everything to scroll).

ListView is vertically scrolling automatically, so you now have two vertical scroll areas, which do you expect to consume the scroll event? Either set your ListView to a static height (not recommended), or design your layout so only the area you want to scroll (ie the ListView) has scrolling capabilities and remove the ScrollView. Also set your base layout, in this case the RelativeLayout, to height=match-parent, and ListView height=0dp weight=1 to prevent the ListView from being "shrunk".
Alternatively, take a look at this solution if you dont want the ListView scrolling independantly: android listview display all available items without scroll with static header

Related

Adding multiple textviews in Linear Layout inside <android.support.v7.widget.CardView>

I want to show multiple text views in one line (horizontally) inside card view (number of views are dynamic for each card, fetched from server). For that I'm using a linear layout in card view like,
<LinearLayout
android:id="#+id/llReader"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:orientation="horizontal" >
</LinearLayout>
And inside adapter(I am using recyclerview adapter) while populating in onBindViewHolder method i'm doing like this,
for (i=0;i<array.size();i++){ // arraysize is different for each card
//create a new texview
// set text of that textview accordingly
// add it to linear layout (ll.addview(tv)
}
Then I prepare the apk and test it. All cards are getting populated correctly. So far so good.
But after few time, when all cards get populated, I noticed that all linear layouts merged and all cards are having linear layout of all other cards. What can be the reason and how to solve it?
P.S. Initially I tried with having a single text view instead of linear layout and keep on adding text into a string inside for loop and then call setText method of text view. This was working fine i.e., it was showing details related to that particular card only. But now I can't use the same as each text view is having an image as well, so new text views will be like (Image + someText). Please suggest me if there is any other way of doing so than using Linear layout.

If your original code with only TextViews is working, you can use TextView with compound drawables.
Then you wouldn't need an ImageView at all. Just add android:drawableLeft="#drawable/yourImage" (or textView. setCompoundDrawablesWithIntrinsicBounds(yourImage, null, null, null) for adding dynamically) to your TextView.
As for your current implementation, it's not possible without looking at your code as to how you are dynamically adding the TextView.

ListView. Hot to highlight whole listview item when touching on it

There is ListView with items which contains TextView.
When you are touching listview item and hold the finger on it, listview item is highlighted a little.
But if textview contains just a few letters - not all row is highlighted.
Is any simple solution (some xml property, etc) to highlight whole row?

Hi Set This Code In Your Xml Of ListView
=================================
<ListView android:id="#+id/list1"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

you try to make listview width android:layout_width="fill_parent" .And also if u are using custom adapter for (images and text) -make layout width size-fill parent or match parent

Set android:layout_width attribute of parent Layout tag to fill_Parent for in xml for Listview.

ListView Items Occupy Remaining Space in Vertical Orientation

Good day all, have a small issue here. I have an EditText and a ListView inside a RelativeLayout. The ListView is populated by items in a string-array using an ArrayAdapter. The size of thr array is 5 and the ListView Items is a Table Layout with table row Layout Parameters set to both Fill_Parent same as the ListView Widget. Now I want the Listview Items to fill up and occupy the remaining screen space. but since they are only few Items, it behaves like it's using wrap_content. Any Idea how to stretch out this ListView Items? Thanks in Advance.

Try this out:
<ListView
android:id="#+id/yourListView"
android:layout_width="fill_parent"
android:layout_height="match_parent">
</ListView>

How can I get my ListView to scroll?

I have a quite complex View build-up, and as a part of that, I have a ListView inside a LinearLayout within a ScrollView (and quite a lot more components, but they do not matter in this issue).
Now the whole activity scrolls nicely as it should, but the ListView has a limited height, and when the Items inside it surpass the height, the disappear of my screen. I've tried to place the ListView inside it's own ScrollView, but this doesn't work. When I try to scroll on the ListView, the main ScrollView is selected and my screen scrolls instead of the ListView.
My question may sound easy, but I haven't been able to fix this... Is it possible to make the ListView scrollable aswell?
The relevant XML:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout android:id="#+id/GlobalLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView android:id="#+id/EndpointList"
android:choiceMode="multipleChoice"
android:layout_height="175dip"
android:layout_width="fill_parent" />
</LinearLayout>
</ScrollView>

Instead of ListView with other layouts inside ScrollView create one ListView with header and footer.
Add views that should be above ListView as a header:
addHeaderView(View v)
and that below as a footer:
addFooterView(View v)
Put everything what should be above ListView to header of ListView and the same with footer.
LayoutInflater inflater = LayoutInflater.from(this);
mTop = inflater.inflate(R.layout.view_top, null);
mBottom = inflater.inflate(R.layout.view_bottom, null);
list.addHeaderView(mTop);
list.addFooterView(mBottom);
// add header and footer before setting adapter
list.setAdapter(mAdapter);
In result you'll get one scrollable view.

Actually, the way that I have it set up is really working... Placing a ListView in a LinearLayout within a ScrollView. Just avoid that the ListView is the direct child of the ScrollView, and it will work out just fine...
Just be aware that if there aren't enough items in the ListView to fill it so it goes 'off screen', that it won't scroll (kind of logically though). Also note that when you have enough items to scroll through, you need to keep pressing on an item in the ListView to make it scroll, and half of the time, focus is given to the global scrollview in stead of the ListView... To avoid this (most of the time), keep pressing on the most top or most down item, depending on which way you want to scroll.This will optimize your chance to get focus on your ListView.
I've made a video that it is possible, am uploading it now to YouTube...
Video is http://www.youtube.com/watch?v=c53oIg_3lKY. The quality is kinda bad, but it proves my point.
Just for a global overview, I used the ScrollView to be able to scroll my entire activity, the LinearLayout for the Activity's layout, and the ListView to, well, make the list...

I would like to just note something for the video
The listview is working once every x touches not because you placed it inside a linearlayout but because you are touching the the divider...
the scrollview will then consider that the place you touched does not have children to dispatch the motionevent to... so it calls the super.dispatchTouchEvent which is in this case the View.dispatchTouchView hence the listview.onTouchEvent.
When you touch inside a row the scrollview which is really a viewgroup will send the dispatch to the children in your case the textview and never calls the one of the view so the listview do not scroll.
Hope my explanation was clear enough to point out why is it not working.

Hide footer view in ListView?

I have a ListView. The data behind it is fetched from the Internet, in sets of 10-30 items whenever the user scrolls all the way to the bottom. In order to indicate that it is loading more items, I used addFooterView() to add a simple view that displays a "Loading..." message and a spinner. Now, when I'm out of data (no more data to fetch), I want to hide that message. I tried to do:
loadingView.setVisibility(View.GONE);
Unfortunately, while that does hide the view, it leaves space for it. I.e. I end up with a big blank space where the "Loading" message used to be. How can I go about properly hiding this view?
I can't use removeFooterView() because I may need to show it again, in which case I can't call addFooterView() again because an adapter has already been set on the ListView, and you can't call addHeaderView() / addFooterView() after setting an adapter.

It seems that you are allowed to call addHeaderView() / addFooterView() after setAdapter() as long as you call one of those methods at least once before. That is a rather poor design decision from Google, so I filed an issue. Combine this with removeFooterView() and you have my solution.
+1 for the other two answers I got, they're valid (and arguably more correct) solutions. Mine, however, is the simplest, and I like simplicity, so I'll mark my own answer as accepted.

Try setting the footer's height to 0px or 1px before hiding it. Alternatively, wrap the footer view in a wrap_content height FrameLayout and hide/show the inner view, leaving the FrameLayout visible; the height should wrap properly then.

in my case addFooterView / removeFooterView() cause some artefacts.
And I found other solution. I used FrameLayout as FooterView. And when I want to add Footer I called mFrameFooter.addView(myFooter); and mFrameFooter.removeAllViews(); for remove.
FrameLayout frameLayout = new FrameLayout(this);
listView.addFooterView(frameLayout);
......
......
//For adding footerView
frameLayout.removeAllViews();
frameLayout.addView(mFooterView);
//For hide FooterView
frameLayout.removeAllViews();

The Droid-Fu library has a class designed for having a loading footer show and hide: ListAdapterWithProgress.

Works well in my project:
1.Add footer view first
mListView.addFooterView(mFooterView);
mListView.setAdapter(mAdapter);
2.Set visibility
mFooterView.setVisibility(View.GONE);
mFooterView.setPadding(0, 0, 0, 0);
3.Set invisibility
mFooterView.setVisibility(View.GONE);
mFooterView.setPadding(0, -1*mFooterView.getHeight(), 0, 0);

As #YoniSamlan pointed out, it can be achieved in a simple way. You have to specify
android:layout_height="wrap_content"
in the ViewGroup that contains the "Load More" button. Doesn't have to be FrameLayout, see below for a simple -working- example that uses a LinearLayout.
Both images show a screen that is scrolled all the way to the bottom. First one has a visible footer that wraps around the "load more" button. Second images shows that the footer collapses if you set button's visibility to GONE.
You can show again the footer (inside some callback) by changing the visibility:
loadMore.setVisibility(View.VISIBLE); // set to View.GONE to hide it again
Perform listView initialization as usual
// Find View, set empty View if needed
mListView = (ListView) root.findViewById(R.id.reservations_search_results);
mListView.setEmptyView(root.findViewById(R.id.search_reservations_list_empty));
// Instantiate footerView using a LayoutInflater and add to listView
footerView = ((LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE))
.inflate(R.layout.load_more_footer_view, null, false);
// additionally, find the "load more button" inside the footer view
loadMore = footerView.findViewById(R.id.load_more);
loadMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
fetchData();
}
});
// add footer view to the list
mListView.addFooterView(footerView);
// after we're done setting the footerView, we can setAdapter
adapter = new ReservationsArrayAdapter(getActivity(), R.layout.list_item_reservations_search, reservationsList);
mListView.setAdapter(adapter);
load_more_footer_view.xml
<?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="wrap_content">
<Button
android:id="#+id/load_more"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="9dp"
android:gravity="center"
android:layout_gravity="center"
android:background="#drawable/transparent_white_border"
android:textColor="#android:color/white"
android:text="#string/LOAD_MORE"/>

It should be a bug of Android.
You don't need to remove or add footer view dynamically. You just need to create an unspecified height parent Layout (either inflate it from an xml file or create it programatically) and then add your view which you want to hide or show into it.
And you can set the view, but NOT the parent Layout, to VISIBLE or GONE or something else now. It works for me.

Used
footer.removeAllViews();
This does not remove footer but flushes children.
You again have to repopulate children. Can check by
footer.getChildCount()<2

I also found that is possible call onContentChanged() (if you use ListActivity) to force recreate ListView if I need add HeaderView to them after setAdapter() call, but it is very ugly hack.

I have created a ListView that handles this. It also has an option to use the EndlessScrollListener I've created to handle endless listviews, that loads data until there's no more data to load.
You can see these classes here:
https://github.com/CyberEagle/OpenProjects/blob/master/android-projects/widgets/src/main/java/br/com/cybereagle/androidwidgets/helper/ListViewWithLoadingIndicatorHelper.java
- Helper to make it possible to use the features without extending from SimpleListViewWithLoadingIndicator.
https://github.com/CyberEagle/OpenProjects/blob/master/android-projects/widgets/src/main/java/br/com/cybereagle/androidwidgets/listener/EndlessScrollListener.java
- Listener that starts loading data when the user is about to reach the bottom of the ListView.
https://github.com/CyberEagle/OpenProjects/blob/master/android-projects/widgets/src/main/java/br/com/cybereagle/androidwidgets/view/SimpleListViewWithLoadingIndicator.java
- The EndlessListView. You can use this class directly or extend from it.

I have small hack way to resolve this problem for everywhere.
Put listview and footer view (just sub layout) in parent layout like LinnearLayout, remember that footerview below listview.
Controller this footer view gone and visibility like nomal view. And done!

first I am adding my footer to the listview,like this
listView.addFooterView(Utils.b);
Then on button click , I remove the view,
listView.removeFooterView(Utils.b);
I am adding the footer everytime when I am hitting the async,and theus the're no duplicate entry.I could aslo check for the count and so it like this,
if(listView.getFooterViewsCount() > 0){//if footer is added already do something}

When you want to remove the footer in ListView just call
listView.addFooterView(new View(yourContext));
It will add a dummy empty view which will not reserve any space

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

ListView item on form only showing one item - android

Related

Adding multiple textviews in Linear Layout inside <android.support.v7.widget.CardView>

ListView. Hot to highlight whole listview item when touching on it

ListView Items Occupy Remaining Space in Vertical Orientation

How can I get my ListView to scroll?

Hide footer view in ListView?

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