Develop Reference

Inflating RelativeLayout within another RelativeLayout

I'm trying to contain the layout model for a custom list view in a single custom list view layout.xml file and inflate that using an custom adaptor class using kotlin.
The data seems to come through fine and the row formatting is accurate with the exception of the header being repeated for each row. I'm guessing I could just move the header out of the list view layout.xml file but I'd prefer to keep that self contained so it could be re-used.
This is the layout file in question:
<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" >
<!-- Header aligned to top -->
<RelativeLayout
android:id="#+id/estimated_ftp_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#color/colorHeader"
android:gravity="start" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="15dp"
android:text="#string/estimated_ftp"
android:textColor="#000"
android:textSize="20sp" />
</RelativeLayout>
<!-- Content below header -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:layout_below="#id/estimated_ftp_header"
android:orientation="horizontal"
android:padding="6dip"
android:id="#+id/estimated_ftp_row">
<ImageView
android:contentDescription="#string/ftp_type"
android:id="#+id/ftp_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#+id/centerPoint"
android:gravity = "center|end|end"
android:src="#drawable/glyphicons_13_heart"/>
<TextView
android:id="#+id/centerPoint"
android:text=""
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true" />
<TextView
android:id="#+id/ftp_value"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_toRightOf="#+id/centerPoint"
android:gravity = "center|start|start"
android:text="141 bpm"/>
</RelativeLayout>
I believe the solution would be to figure out how to select the estimated_ftp_row id and inflate it instead of the the whole estimated_fto.xml file.
Here is the code in the adapter that selects the layout before inflating within the getView method:
val inflater = activity?.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
view = inflater.inflate(R.layout.estimated_ftp, null)
viewHolder = ViewHolder(view)
view?.tag = viewHolder
How would I change the inflater.inflate to inflate something within R.layout.estimated_ftp?
FWIW, the activity's XML layout has a ListView control in the location used for this as a placeholder. It doesn't reference the custom layout file. That connection is done via the adapter class noted above. Not sure that's a problem or not so I wanted to mention it...
Thanks in advance for any suggestions.
mike
Solution Update:
https://stackoverflow.com/users/2850651/mike-m had the guidance I needed. I was able to separate the row format from the header format XML layouts. The Adapter was unchanged and the Activity has new code to add the header if content is found for the list in question.
val headerView = layoutInflater.inflate(R.layout.estimated_ftp_head, null)
estimated_ftp_list.addHeaderView(headerView)

Solution:
https://stackoverflow.com/users/2850651/mike-m had the guidance I needed. I was able to separate the row format from the header format XML layouts. The Adapter was unchanged and the Activity has new code to add the header if content is found for the list in question.
val headerView = layoutInflater.inflate(R.layout.estimated_ftp_head, null)
estimated_ftp_list.addHeaderView(headerView)

Adding LinearLayout to ListView using an adapter

I am trying to create a ListView where each entry in the list consists of a LinearLayout. I have an ArrayList that I have defined here:
ArrayList<LinearLayout> menuList;.
Later in my code, I define
LinearLayout dailyMenuLayout = new LinearLayout(ReturnMenus.this);, and every time I complete a layout to be added to the ListView, I use menuList.add(DailyMenuList)
The adapter that I have been trying to use is as follows -- but it crashes the app every time that it is triggered.
ListView myListView = (ListView)findViewById(android.R.id.list);
ArrayAdapter<LinearLayout> adapter = new ArrayAdapter<LinearLayout>(ReturnMenus.this, R.id.linear_layout_item, menuList);
myListView.setAdapter(adapter);
And this is the XML for the single row in the ListView:
<?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" >
<LinearLayout
android:id="#+id/linear_layout_item"
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="wrap_content" >
</LinearLayout>
</LinearLayout>
Can somebody show me how to accomplish this? Thanks.

Use something like following layout for the row layout in your list rather than you current layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/text3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
.
.
.
.
.
</LinearLayout>
Here if you do not know exactly how many textView that you are going to use, use maximum number of TextView that using in your application. Then in your adapter class inside getView() you can get those TextView. If some rows not going to use all of these textViews then set them invisible as like this:
TextView txtView3 = (TextView)findViewById(R.id.text3);
txtView3.setVisibility(View.GONE)
Following tutorial helps you to create the listView.
http://www.vogella.com/tutorials/AndroidListView/article.html

You should bind data to adapter,such as strings,not the layout.
To see how to use ListView and Adapter,please check the demo project in your-android-sdk-dir\samples\android-XX\ApiDemos.

Create a List with a static textView

I need your help. My problem is that I'm trying to create a layout that have a static textView and in the bottom a List with an adapter. I don't know how to do that. There is what I want that the layout show me:
NameOfPerson //The static text
Exm1
Exm2
Exm3
The problem is show the list with the static text, and/or show the static text with the list. What I have to do? I have to use fragments?
Thanks,

What's wrong with that solution?
<?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" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>

Try this code :
View footerView = ((LayoutInflater) ActivityContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.footer_layout, null, false);
ListView.addFooterView(footerView);

See ListView.html.addHeaderView.
Do your ListView as you normally would, and add the extra view with addHeaderView. Be sure to call addHeaderView before setAdapter though, otherwise it won't have any effect.

Android: set empty view to a list view

<TextView
android:id="#android:id/empty"
style="#style/FacebookFont"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="#string/no_result_found"
android:textColor="#color/white" />
this is the xml code for empty view. I am setting empty view as follows:
list.setAdapter(adapter);
list.setEmptyView(findViewById(android.R.id.empty));
I have the items in the listview even then also before listview is populated the empty view is shown.
I don't want that empty view to be shown when listview contains some item.
Please help.

if you are using ListActivity then no need to set the empty view manually. Remove list.setEmptyView(findViewById(android.R.id.empty)); from your code.
Change your layout like below then it's automatically add EmptyView if list has no item:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="8dp"
android:paddingRight="8dp">
<ListView android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FF00"
android:layout_weight="1"
android:drawSelectorOnTop="false"/>
<TextView android:id="#android:id/empty"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FF0000"
android:text="No data"/>
</LinearLayout>

You have to set the empty view before setting the adapter, if your MainActivity is not extending ListActivity.
Try this
list.setEmptyView(findViewById(android.R.id.empty));
list.setAdapter(adapter);
Sorry for the late answer!
Alternate method: Make your activity extend from ListActivity. And add a textview to your list layout with id android.R.id.empty

Try this
View view = getLayoutInflater() .inflate(<resource id of the empty view>, null);
ViewGroup viewGroup= ( ViewGroup)list.getParent();
viewGroup.addView(view);
list.setEmptyView(view);
list.setAdapter(adapter);

There are some correct answers, however, I think this is the best approach I've found:
View emptyView = getLayoutInflater().inflate(R.layout.empty_list_cart, null);
addContentView(emptyView, listView.getLayoutParams()); // You're using the same params as listView
listView.setEmptyView(emptyView);
listView.setAdapter(adapter);

Whatever #dhawalSodhaParmar has explained is correct. But there is a confusion when you look at the way the answer is put down.
<?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=".SampleActivity">
<ListView
android:id="#+id/list"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:divider="#null"
android:dividerHeight="0dp" />
<!-- Empty view is only visible when the list has no items. -->
<TextView
android:id="#+id/empty_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="NO DOCUMENTS AVAILABLE!"
android:textColor="#525252"
android:textAppearance="?android:textAppearanceMedium"
android:visibility="gone"/>
</RelativeLayout>
Suppose if you already have a list view and adapter backing the same with data. And assuming everything is working fine, whoever wants to implement this empty list view screen has to start like below:
Step 1:
Modify the existing Activity XML file which has the list view with the one I have used here. You can use either a Linear Layout or Relative Layout, but preferably Relative because of the flexibility. And a textView like I have written.
Step 2:
Go to your Activity Java file, and after your setContentView
ListView emptyListView = (ListView) findViewById(R.id.list);
// set your adapter here
// set your click listener here
// or whatever else
emptyListView.setEmptyView(findViewById(R.id.empty_text_view));
That's it, now run and you are set!

// first of all create a global variable of Text view
// which is displayed when the list is empty
private TextView mEmptyStateTextView;
//then in onCreate(Bundle savedInstanceState)
/Setting empty text view
mEmptyStateTextView=(TextView) findViewById(R.id.emptyview);
view.setEmptyView(mEmptyStateTextView);
//then in onLoadfinished method
mEmptyStateTextView.setText(R.string.no_earthquakes);

Android - Populating a listview using fragments and a Simple cursor adapter

I know that this question is probably asked a hundred times so far, but i still haven't manage to solve my problem. I have one activity that's comprised of 2 fragments. One fragment is a form that adds information to the database:
**R.layout.fragment_add_server:**
<?xml version="1.0" encoding="utf-8"?>
...
<LinearLayout
android:id="#+id/nameLinear"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp" >
<TextView
android:id="#+id/nameText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="70"
android:text="#string/strName"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/editName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="30"
android:hint="#string/editName" />
</LinearLayout>
...
And another fragment that's just a listview.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/georgeback"
android:orientation="vertical" >
<ListView
android:id="#+id/listView1"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="60" >
</ListView>
<Button
android:id="#+id/connect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/connectBTN" />
</LinearLayout>
That fragment, the listview, i want to populate it with whatever there is in the database, and auto refresh when something new is added(haven't got to that stage yet). When i'm using the following code below i manage to populate the listview with the entire fragment(i.e i see the listboxes,buttons etc and i can even interact with them. Inception.) instead of just the data.
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_select_server,
container, false);
Cursor mNotesCursor = mDbHelper.fetchAllNotes();
String[] from = new String[]{mDbHelper.KEY_TITLE};
int[] to = new int[]{R.id.editName};
mCurAdapter = new SimpleCursorAdapter(view.getContext(),R.layout.fragment_add_server,mNotesCursor,from,to,0);
mMyListView=(ListView)view.findViewById(R.id.listView1);
mMyListView.setAdapter(mCurAdapter);
return view;
}
I believe that i'm doing something wrong with the from and to fields of the constructor. Any idea why i'm getting as an output the entire fragment view and not just the data in the database? Any other suggestions?

Your problem is when you pass the fragment layout instead of the list view item layout. From what I can see your list view item is included inside your fragment_add_server.xml layout (since you put ... before and after the xml snippet). Move the snippet into its own file, something like my_list_view_item.xml and use that when creating your SimpleCursorAdapter.
mCurAdapter = new SimpleCursorAdapter(view.getContext(),R.layout.my_list_view_item,mNotesCursor,from,to,0);

I solved the problem i had by changing the layout in the simplecursoradapter. Instead of
mCurAdapter = new SimpleCursorAdapter(view.getContext(),R.layout.fragment_add_server,mNotesCursor,from,to,0);
i did:
mCurAdapter = new SimpleCursorAdapter(view.getContext(),android.R.layout.simple_list_item_1,mNotesCursor,from,to,0);
Essentially changing the layout to the generic android list layout did the trick! :)