Develop Reference

Top/Bottom Padding for Spinner

How do I specify for a spinner in Android an extra padding on top/bottom of the first/last item? See sample of Goolge below (8 dp spacing).

Spinner does not support multiple view types.Issue.
I suggested you using dialog for showing your list.
Edited
according to your comment resolved your problem with this question

You need to create a custom adapter for you Spinner using your custom layout. Thus, you just need to provide a layout with the proper margin/paddins.
Spinner spinner = (Spinner) findViewById(R.id.myspinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.data, R.layout.spinner_item);
adapter.setDropDownViewResource(R.layout.spinner_dropdown_item);
spinner.setAdapter(adapter);
You can find a valid example here.

Just create a separate layout for the items you want to display in the spinner.
Something like this
spinner_text_view.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/customTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="15dp"
android:text="#string/sample_list_item"
android:textColor="#android:color/black"
android:textSize="20sp" />
Then in your activity/fragment, you can create an adapter (an array adapter to be simple in this case) and pass this layout to that adapter reference. Finally set that adapter to the spinner and you can get the desired result.
Sample code.
private void setupSpinner() {
String[] sampleSpinnerItems = {"One", "Two", "Three", "Four", "Five"};
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this,
R.layout.spinner_text_view, sampleSpinnerItems);
sampleSpinner.setAdapter(spinnerAdapter);
}
Hope this helps.
Note : spinner_text_view is the layout file you have created earlier.

You need custom adapter for this and custom layouts .
You can use 2 layouts . Supposing you have n elements to show , in your spinner you ll have n+2. iF the position is 0 (the first element) or the last element you will show the empty layout otherwise you will show the other layout .
The empty layout you will use for creating this space

You can accomplish this using custom Adapter for Spinner. It will look like this:
class YourAdapter extends BaseArrayAdapter<YourObject> {
#Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.your_item, parent, false);
DropDownViewHolder holder = new DropDownViewHolder();
holder.root = convertView.findViewById(R.id.drop_down_root);
// other assignments etc.
convertView.setTag(holder);
}
DropDownViewHolder holder = (DropDownViewHolder) convertView.getTag();
int bottomPadding = 0;
int topPadding = 0;
if (position == 0) {
topPadding = getContext().getResources().getDimensionPixelSize(R.dimen.margin_8);
} else if (position == (getCount() - 1)) {
bottomPadding = getContext().getResources().getDimensionPixelSize(R.dimen.margin_8);
}
holder.root.setPadding(0, topPadding, 0, bottomPadding);
// other UI related logic etc.
return convertView;
}
// ...
public static class DropDownViewHolder {
View root;
// other views
}
}
Actually logic with setting extra padding can be changed to changing some stub view visibility to VISIBLE or inflating some other layout depending on position, but the solution with padding seems more natural to me.

You don't actually need a custom adapter for this. The following solution works perfectly.
Create a drawable bg_spinner.xml:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="3dp" />
<padding
android:bottom="8dp"
android:top="8dp" />
<solid android:color="yourPopupColor" />
</shape>
Then set android:popupBackground="#drawable/bg_spinner_popup" property for your Spinner in XML.
This works like a charm without anything being cut off etc.

Change text color of android.R.layout.simple_list_item_multiple_choice

I am trying to figure out how I can change the text color of android.R.layout.simple_list_item_multiple_choice
I know you can create your own listview with checkboxes but I really do not want to have to do that as the android.R.layout.simple_list_item_multiple_choice works perfectly, I would just like to know how to change the Text color.
I have come accross this question here but I do not understand how I can use the most voted up answer.
How can I override android.R.layout.simple_list_item_multiple_choice textview so I can change the color of it. Thank you.

You can change color easily.
You just have to override the getView() method.
And inflate the android.R.layout.simple_list_item_multiple_choice in particular view. now you can access the whole template.
So that you can get the TextView used in this template by finding using id android.R.id.text1. after that you can change the behavior of textview.
ArrayAdapter<String> list = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice, your_data_container) {
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = LayoutInflater.from(InvitationFlowActivity.this).inflate(android.R.layout.simple_list_item_multiple_choice, null);
TextView tv = (TextView) v.findViewById(android.R.id.text1);
tv.setTextColor("Your_color");
}
};
And if you are using custome adapter then you can also override the same getView() method and you can customize it as per your requirement.

Just make custom layout - simple_list_item_multiple_choice.xml like this -
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:textAppearance="?android:attr/textAppearanceLarge"
android:gravity="center_vertical"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:paddingLeft="6dip"
android:paddingRight="6dip"
android:textColor="#FF0000"
/>
and use it in place of android.R.layout.simple_list_item_multiple_choice.xml

There are two ways to do this.
1. Override the getView method
2. Use custom layout instead of standard layout.
No. 2 is better as you have more control on the same and you can edit at your ease.
Alt+Click will clone the required layout to your res/layout folder.
Make changes to the new layout and use it in the adapter.
ArrayAdapter aa = new ArrayAdapter(getApplicationContext(),R.layout.text_change,listItems);
listView.setAdapter(aa);
Here listItems is the String array of list.
text_change.xml is the updated layout xml
listView is your listview in the main layout.
In order to dynamically update color of content use the following code
AdapterView.OnItemClickListener itemClickListener = new AdapterView.OnItemClickListener(){
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if(position==0)
{
//Intent intent = new Intent(CoffeeShop.this,DrinkCategoryActivity.class);
//startActivity(intent);
TextView txtV = (TextView)view;
txtV.setTextColor(Color.BLUE);
}
else
{
TextView txtV = (TextView)view;
txtV.setTextColor(Color.YELLOW);
Toast toast = Toast.makeText(getApplicationContext(),(CharSequence)"These Methods are yet to be made public", Toast.LENGTH_SHORT);
toast.show();
}
}
};
ListView listView = (ListView)findViewById(R.id.list_opt);
listView.setOnItemClickListener(itemClickListener);
Adding onclicklistner for the view will allow updating the color of the text upon clicking. You can add respective logic as to which color should the text be displayed.

How to set style in spinner

How to set style on spinner ? I have style with font size and family for custom edit text class and I need same for spinner. I tried to add style tag in spinner xml but it is ignored, I tried in adapter but it doesn't work.
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, tempList) {
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);
Typeface externalFont = Typeface.createFromAsset(getAssets(), "fonts/CANDARA.TTF");
((TextView) v).setTypeface(externalFont);
return v;
}
}

Instead of using the simple spinner layout android.R.layout.simple_spinner_item, create your own layout file containing a TextView and style it the way you'd like. Then, pass a reference to that layout when you instantiate the ArrayAdapter.

You are passing the default android layout for the spinner items, instead create your own layout like:
<RelativeLayout
android:id="#+id/rel"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/txtSpinnerItem"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
stlye="#style/txtViewStyleHere"/>
</RelativeLayout>
Pass this layout to the adapter, in that case, you will have to create your own adapter class to access the textView.

you want to add customize spinner
for that see these two link it might be help you .
Link 1 normal as you want just changing text and all that,
and for hover effect on your spinner look this link . Link2

Change font size of gridview items (Android)

Below is code of my girdview. i need to change font size of the data. i aslo need to change default selection colour which is orange. please help i am new to android development.
String[] tes={"AAA","BBB","CCC"};
ArrayAdapter<String> aa = new ArrayAdapter<String>(
this,
android.R.layout.simple_list_item_1,
tes );
gv.setAdapter(aa);
gv.setOnItemClickListener(this);

You have to change the font size in the baseadapter class for the gridview.
Like this:
public View getView(int position, View convertView, ViewGroup parent) {
TextView tv;
if (convertView == null) {
tv = new TextView(context);
tv.setLayoutParams(new GridView.LayoutParams(100, 80));
tv.setTextSize(20); //text size in gridview
}
The gridview just show whatever the
gridview.setAdapter(new MyAdapter (thi));" //MyAdapter class is where the getView method run
sets the setAdapter to contain.

You can try to achieve this by changing styles of your widgets. Take a look a this
post to learn to apply styles and themes. Also you'll find description of all android styles and themes there. Hope this helps.

You can change it in the XML file, if you write android:textColor="#000000" where 000000 is the code of your color hexcode what you want.

a little bit too late but for others who are looking for it will work :
first you create this a simple_textview.xml(put it a name)
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="10dp"
android:shadowColor="#color/grisActionBar"
/>
then in yout activity or fragment you set the adapter with the created textview.xml
gvMain = (GridView)v.findViewById(R.id.gridView);
gvMain.setAdapter(new ArrayAdapter<String
(getActivity(),R.layout.simple_textview,data));

How to set the size of an AutoCompleteTextView Result?

Does anybody know How to set the size of an AutoCompleteTextView Result ?
I try android:textSize="12sp" But it only modify the size of the text in the TextView, not in the result.

The best way is to create your own xml file with a customized design, such as "dropdown.xml"
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/textAutoComplete"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#F3F5E1"
android:gravity="center_vertical"
android:padding="5dp" />
and in your code use this
AutoCompleteTextView etChoose= (AutoCompleteTextView) findViewById(R.id.etChoose);
ArrayAdapter<String> adapterChoose = new ArrayAdapter<String>(this,R.layout.dropdown, ChooseList);

Just add android:dropDownHeight="size" for AutoCompleteTextView in xml file.

private ArrayAdapter<String> autoCompleteAdapter = new ArrayAdapter<String>
(this,android.R.layout.simple_list_item_1, yourList) {
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);
((TextView) v).setTextSize(14);
Typeface Type = getFont () ; // custom method to get a font from "assets" folder
((TextView) v).setTypeface(Type);
((TextView) v).setTextColor(YourColor);
((TextView) v) .setGravity(Gravity.LEFT|Gravity.CENTER_VERTICAL);
return v;
}
};
YourAutoCompleteView.setAdapter(autoCompleteAdapter);

Assuming someone is facing the same issue now
Instead of using simple_spinner_item you can also use simple_spinner_dropdown_item to get better results as it will format the data as it would appear in a normal dropdown
ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_spinner_dropdown_item, subjects1);