I want custom spinner in android like below description
- Place Holder Text (Spinner first item - selected item will be centered )
- Drop down list item will be left-aligned
I try to use custom layout adapter for Spinner but just only align for both spinner and drop down list.
I hope somebody can help me with it ! I'm newbie with Android , sorry about that!
This is an example that I've used in an app recently.
Create 2 files in your res/layout folder, one called spinner_list.xml and one called spinner_list_dropdown.xml.
spinner_list.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="#dimen/text_size"
android:padding="10dp"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:textColor="#color/text_view_text"/>
spinner_list_dropdown.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="#dimen/text_size"
android:padding="10dp"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:textColor="#color/text_view_text"
android:background="#color/spinner_background"/>
Java code for using the custom spinner:
ArrayAdapter<String> adapter = new ArrayAdapter<>(YourActivity.this, R.layout.spinner_list, strYourArray);
adapter.setDropDownViewResource(R.layout.spinner_list_dropdown);
spinnerCustomList.setAdapter(adapter);
Hope this all makes sense to you, if you need any help with it then please don't hesitate to ask.
Related
I am trying to customize the default appearance of a Spinner item.
I have defined a layout in a file by the name of :
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#ff0000"
android:textSize="20sp" />
And here when initializing the spinner I am trying to assign this layout to it:
ArrayAdapter<String> nearByLocationsAdpt = new ArrayAdapter<String>(this, android.R.layout.spinner_item_layout,nearByLocationsArray);
But it keeps saying that spinner_item_layout cannot be resolved or
is not a field however it is present in the layout folder?
Another related question is it possible to view and edit the default spinner layout
xml file i.e. android.R.layout.simple_spinner_item
The problem is this:
android.R.layout.spinner_item_layout
You are using the default layout. You have to supply the one you created instead. Depending on the how you named your layout that would be something like this:
R.layout.my_spinner_item
I have several edittexts in my view for taking input for a database query .I'm displaying the query results in a list view below the edittextfields. Because there are 7 edittextfields there is not enough space for the listview. I wanted to put all the edittexts in an expandablelistview.
Problem i'm facing is -only the expandablelistview item is shown -the listview doesnt come up at all --i have #android:id/empty and #android:id/list entries ---but nothing comes up
i can't add the listview into the expandablelistview as that is not allowed + since i need both #android:id/empty and #android:id/list to show query results i need a proper list view.
what are my options --? i could ofcourse display the results in a separate window
If you could show the xml you have right now it would be great but the ideas behind it needs to be something like:
<?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"
android:orientation="vertical" >
<ExpandableListView
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Edit:
Okay so i figured out that for this layout to function correctly you need to set dome weight so that the linearlayout understand what size to give each children. Use:
android:layout_weight="1"
in the listview and the expandablelistview (1 in both means thay will divide space between them)
I'm making a custom view which contains an ExpandableListView, a CheckedTextView and a ListView :
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/filtersDialogView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minHeight="200dp"
android:orientation="vertical" >
<ExpandableListView
android:id="#+id/filtersListView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<CheckedTextView
android:id="#+id/onlyShowAvailableItemsCheckedTextView"
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:gravity="center_vertical"
android:paddingLeft="8dip"
android:paddingRight="8dip"
android:text="#string/OnlyShowAvailableItems" />
<ListView
android:id="#+id/categoriesListView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
The problem is that the CheckTextView is fixed and the two lists are scrolling independently (which is normal for that layout). Furthermore when I expand a list item from the ExpandableListView, the CheckedTextView and the other ListView become hidden. I'd like to make a single list with all these elements that could scroll and resize properly when I expand an element of the first list (the cells of the second list are not expandable). How can I do that? Is it possible to make it without having to modify the Adapters of the lists and the controller of the CheckedTextView ?
Thanks
How can I do that? Is it possible to make it without having to modify
the Adapters of the lists and the controller of the CheckedTextView ?
I doubt that, especially as you have two scrolling views, the ExpandableListView and the ListView. I think your only option is a special adapter that will simulate the layout above. I had a custom ExpandableListView adapter that I modified into something that will simulate the layout like the one above. It's something raw so there could be some errors(I've tested it a little) and of course there are other things to work on. The code sample it's a little big so I put it here https://gist.github.com/3046887 .
I'm using the ListView to provide a list for the user to choose from.
Here is the main code:
SimpleAdapter adapter = new SimpleAdapter(this,contacts, R.layout.list_contact,
from_contacts, to_contacts);
listview_selected_contact.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
listview_selected_contact.setAdapter(adapter);
I wonder why the checkbox doesn't show?
The program run properly just without the visible checkbox.
Can anyone help?
Here is the xml:
<?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">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" android:textAppearance="?android:attr/textAppearanceMedium" android:id="#+id/username"></TextView>
</LinearLayout>
It looks like that your R.layout.list_contact isn't CheckedTextView.
See source of android.R.layout.simple_list_item_multiple_choice
I can recommend you to build custom view which is child of any ViewGroup classes and implementator of interface Checkable.
id of checkBox and listView in R.layout.list_contact should be specific .
so follow ApiDemoes multiple List example for both layout and java code .
There is something I'm just not getting, and I'm looking for assistance in understanding what is happening here.
I have a custom list adapter (that just extends BaseAdapter) that I have successfully been using to generate and display a list. Now I want to add a static footer to the bottom of my list. After looking at a number of resources (specifically this one) I've come to realize that my reluctance of using XML has to come to an end, and set up the following xml layout in a file called devices_list.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout android:id="#+id/bottom_control_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<ToggleButton android:id="#+id/bottom_control_toggle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textOff="Filter Favourites OFF"
android:textOn="Filter Favourites ON"/>
</LinearLayout>
<ListView android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_above="#id/bottom_control_bar">
</ListView>
<TextView android:id="#android:id/empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/main_empty_list"
android:layout_above="#id/bottom_control_bar"/>
</RelativeLayout>
After some adjustments to the activity that holds the list, I ran the code. I see my footer, (and also the tab widget which is parent to everything), but the area where the list goes is empty.
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
this.setContentView(R.layout.devices_list);
db = new DbManager(this);
db.open();
AllCur = db.fetchAllDevices();
startManagingCursor(AllCur);
list = new DeviceListAdapter(this, AllCur); //make my custom list adapter
setListAdapter(list);
}
Is there some way to link up the ListView widget declared in my xml with my DeviceListAdapter? It's pretty clear to me now that I'm not entirely sure about how this is all working. Any help in clarification would be much appreciated.
You have both the ListView and the TextView set to android:layout_above="#id/bottom_control_bar", which means the TextView will overlap the ListView. And, you have said that your ListView height is 0dip, which will make for an extremely short list.
I would define the ListView as being above the TextView and anchored to the top of the screen (android:layout_alignParentTop="true").
Is there some way to link up the
ListView widget declared in my xml
with my DeviceListAdapter?
You already are, by calling setListAdapter().