Develop Reference

ActionBar Tab indicator color

I want to know how to change tab indicator color. I have tried multiple code but none is working, So please help me how to change default color? below code I am using :
actionBar.setStackedBackgroundDrawable(getResources()
.getDrawable(R.drawable.tab_selector));
tab_selector.xml
-->
-->
-->
<!-- Focused states -->
<item android:state_focused="true" android:state_selected="false" android:state_pressed="false" android:drawable="#drawable/cab_background_top_example" />
<item android:state_focused="true" android:state_selected="true" android:state_pressed="false" android:drawable="#drawable/cab_background_top_example" />
<!-- Pressed -->
<item android:state_selected="true" android:state_pressed="true" android:drawable="#color/tabcolor" />
<item android:state_pressed="true" android:drawable="#color/tabcolor" />

make a custom actionbar. Use this http://jgilfelt.github.io/android-actionbarstylegenerator/

Using style also you can do this (code is based on support-v7 library)
<style name="MyAppTheme" parent="#style/Theme.AppCompat.Light.DarkActionBar">
<item name="android:actionBarTabStyle">#style/MyActionBarTabs</item>
<item name="actionBarTabStyle">#style/MyActionBarTabs</item>
</style>
<style name="MyActionBarTabs" parent="#style/Widget.AppCompat.ActionBar.TabView">
<item name="android:background">#drawable/tab_selector</item>
<item name="background">#drawable/tab_selector</item>
</style>
For more info visit Official Doc: Styling the Action Bar.

how can i override the Dialog Style of a theme like appcombat?

i have been trying to make my own dialog style. This is what i have now:
There are two issues I want to fix, I want to get rid of the blue line below the title.
And I have applied a listSelector to the list which is probably been overridden by the parent style, because it only appears on the selected item.
This is the code of the style of the dialog:
<style name="CustomDialogTheme" parent="">
<item name="android:windowIsFloating">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:padding">0dp</item>
<item name="android:windowBackground">#android:color/transparent</item>
<item name="android:windowAnimationStyle">#android:style/Animation.Dialog</item>
<item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>
<item name="android:fitsSystemWindows">true</item>
<item name="android:listSelector">#drawable/list_selector</item>
</style>
I have tried changing the parent and using Theme.Dialog. The problem then becomes that i do not want borders around the dialog. And by setting the windowBackground to transparent did not fix that.
People said I would have to create my own 9png, and I did but somehow it was added on top of the Theme.Dialog style.
How should I proceed given my problem?
It seems that my style does not override the parent's attributes given, only adds to them?
Here is the listSelector code:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_selected="false"
android:state_pressed="false"
android:drawable="#drawable/gradient_bg" />
<item android:state_pressed="true"
android:drawable="#drawable/gradient_bg_hover" />
<item android:state_selected="true"
android:state_pressed="false"
android:drawable="#drawable/gradient_bg_hover" />
</selector>
Another way I could deal with this would be to change the blue line below the title color. Is that possible?

Set selected item background color on Android dropdown navigation

I think this is an easy question, but I haven't been able to find an answer to my specific problem.
I've read this great article and would like to set the background color of the selected item on the Android Dropdown list on the stock ActionBar (I'm not using Sherlock and I'm targetting ICS+), as explained in the image link below:
So far I've set my theme in this way:
<resources>
<style name="AppBaseTheme" parent="android:Theme.Holo.Light">
<item name="android:dropDownListViewStyle">#style/MyDropDownListView</item>
</style>
<style name="MyDropDownListView" parent="android:style/Widget.Holo.ListView.DropDown">
<item name="android:listSelector">#drawable/ad_selectable_background</item>
</style>
</resources>
And this is my ad_selectable_background.xml:
<selector xmlns:android="http://schemas.android.com/apk/res/android"
android:exitFadeDuration="#android:integer/config_mediumAnimTime" >
<item android:state_pressed="true" android:drawable="#android:color/holo_blue_light" />
<item android:drawable="#android:color/transparent" />
</selector>
My dropdown view resource is:
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
The pressed state works, but when you open the menu no selection is displayed.
I would like to set it to holo_blue_light using the selector, but I'm not able to find the correct syntax using XML.
I'm looking for an XML only answer if it's possible (i.e. not using any code). Thanks!

Apparently, it was quite simple!
I had to edit ad_selectable_background.xml to use the checked state (as I did before, but I was missing the theme below):
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
android:exitFadeDuration="#android:integer/config_mediumAnimTime" >
<item android:state_pressed="false" android:state_checked="true" android:drawable="#android:color/holo_blue_light" />
<item android:state_pressed="true" android:drawable="#android:color/holo_blue_light" />
<item android:drawable="#android:color/transparent" />
</selector>
And then edit the theme by adding the android:spinnerDropDownItemStyle item and disabiling the checkMark (as I didn't want the radio buttons), in this way:
<resources>
<style name="AppBaseTheme" parent="android:Theme.Holo.Light">
<item name="android:dropDownListViewStyle">#style/MyDropDownListView</item>
<item name="android:spinnerDropDownItemStyle">#style/MySpinnerDropDownItem</item>
</style>
<style name="MyDropDownListView" parent="android:style/Widget.Holo.ListView.DropDown">
<item name="android:listSelector">#drawable/ad_selectable_background</item>
</style>
<style name="MySpinnerDropDownItem" parent="android:style/Widget.DropDownItem.Spinner">
<item name="android:background">#drawable/ad_selectable_background</item>
<item name="android:checkMark">#null</item>
</style>
</resources>

Style android spinner

I'm trying to get my android app a bit more stylish and have made some progress but the spinner dropdown are giving me trouble. I've got a screenshot to show you the problem:
What I want is the white box in the background to be transparent, as in the same grey overlay over the back screen as the rest of the screen outside the dropdown.
Android 4.0, API 15 if I recall correctly.
As requested here's how I do it so far. These are snippets I think are relevant but I might have missed something.
Here's the xml for spinner:
<Spinner
android:id="#+id/edit_countrySpinner"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:entries="#array/edit_countryArray"
android:gravity="center"
android:prompt="#string/country_prompt" />
In my values/style.xml. If I change the color of the background here the background in the dialog do change, but all the rest of the backgrounds as well. I haven't figure out how to jus change the background in the dropdown dialog.
<style name="appcin" parent="#android:style/Theme.NoTitleBar.Fullscreen">
<item name="android:spinnerStyle">#style/spinnerStyle</item>
<item name="android:spinnerItemStyle">#style/SpinnerItem</item>
<item name="android:spinnerDropDownItemStyle">#style/SpinnerDropDownItem</item> -->
<item name="android:background">#FFFFFF</item>
</style>
<style name="spinnerStyle">
<item name="android:background">#drawable/pink_white_dropdown</item>
<item name="android:clickable">true</item>
</style>
<style name="SpinnerItem">
<item name="android:textColor">#993399</item>
<item name="android:background">#drawable/pink_white_dropdown</item>
<item name="android:maxHeight">10dip</item>
</style>
<style name="SpinnerDropDownItem">
<item name="android:textColor">#993399</item>
<item name="android:background">#FFFFFF</item>
</style>
I've tried adding this to the app theme but none of them made any difference, the background was still white.
<...theme....>
<item name="android:dropDownListViewStyle">#style/DropDownStyle</item>
<item name="android:dropDownSpinnerStyle">#style/DropDownStyle</item>
<item name="android:dropDownSelector">#style/DropDownStyle</item>
</... theme ...>
<style name="DropDownStyle">
<item name="android:background">#FFF000</item>
<item name="android:popupBackground">#FFF000</item>
<item name="android:cacheColorHint">#FFF000</item>
</style>
In drawable/pink_white_dropdown, just showing the same image for all the cases. pink_white_arrow is a 9patch image I've made. There are lots of guides, here's one I found by 30sec on google.
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_window_focused="false" android:state_enabled="true"
android:drawable="#drawable/pink_white_arrow"/>
<item android:state_window_focused="false" android:state_enabled="false"
android:drawable="#drawable/pink_white_arrow"/>
<item android:state_pressed="true"
android:drawable="#drawable/pink_white_arrow"/>
<item android:state_pressed="false"
android:drawable="#drawable/pink_white_arrow"/>
<item android:state_focused="true" android:state_enabled="true"
android:drawable="#drawable/pink_white_arrow"/>
<item android:state_enabled="true"
android:drawable="#drawable/pink_white_arrow"/>
<item android:state_focused="true"
android:drawable="#drawable/pink_white_arrow"/>
<item
android:drawable="#drawable/pink_white_arrow"/>
</selector>
Somewhere in these files I figure something should be made transparent, but I don't know where.

Remove the SpinnerStyle background attribute.
Remove this:
<style name="spinnerStyle">
<item name="android:background">#drawable/whitish_rectangle</item>
</style>
which is what draws the background white rectangle.
Building on the code in your question, here is a basic example on how you can style your Spinner:
The styles.xml file sets styles for the SpinnerItem and SpinnerDropDownItem:
<resources>
<style name="customtheme" parent="#android:style/Theme.Light">
<item name="android:spinnerItemStyle">#style/SpinnerItem</item>
<item name="android:spinnerDropDownItemStyle">#style/SpinnerDropDownItem</item>
</style>
<style name="SpinnerItem">
<item name="android:textColor">#993399</item>
<item name="android:background">#drawable/my_rectangle</item>
</style>
<style name="SpinnerDropDownItem">
<item name="android:textColor">#993399</item>
<item name="android:background">#drawable/my_rectangle</item>
</style>
</resources>
For testing, I've created a bright-colored drawable shape, called my_rectangle.xml. Replace this with your own drawable:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<solid android:color="#ff0000" />
<stroke
android:width="1dp"
android:color="#888888" />
</shape>
Add the Spinner to the Activity's layout:
<LinearLayout 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"
android:padding="40dip">
<Spinner
android:id="#+id/edit_countrySpinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="#array/location_names"/>
</LinearLayout>
This produces:
with no white square in the background.

add
<item name="android:popupBackground">#null</item>
to your spinner style.

style android spinner
Spinner Widget requires two different custom layouts, one for the view to be displayed and another for the drop down list!
In this example blog on Custom Spinner Android, we will guide you how to create a custom spinner in android studio which will have:
Customized Background for Selected Item
Custom Selected Item Text Color
Text Color for Dropdown
Background for Drop down List
Spinner Animation
Link here: https://androiddvlpr.com/custom-spinner-android/

I had the same problem, and the below code worked for me:
<item name="android:popupBackground">#null</item>

TextView state_pressed/state_focused/state_selected style change

I'm trying to change a TextView style based on its state.
My styles.xml contains:
<style name="text_normal_ops">
<item name="android:gravity">left</item>
<item name="android:textColor">#color/text_usual_color</item>
<item name="android:textStyle">bold</item>
</style>
<style name="text_normal_ops_pressed">
<item name="android:gravity">left</item>
<item name="android:textColor">#color/text_pressed</item>
<item name="android:textStyle">bold</item>
</style>
My selector (text_ops.xml)is defined as:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" style="#style/text_normal_ops_pressed" />
<item android:state_focused="true" style="#style/text_normal_ops_pressed" />
<item android:state_selected="true" style="#style/text_normal_ops_pressed" />
<item style="#style/text_normal_ops"/>
</selector>
But when I apply this to my textview (style="#drawable/text_ops") it does not work.
Any tips?
Thanks

In android as per my knowledge there is only two state-list 1. Color State List Resource 2. StateListDrawable. If you are using style in it then please recheck the doc
Please check below link for more info
http://developer.android.com/guide/topics/resources/color-list-resource.html
http://developer.android.com/guide/topics/resources/drawable-resource.html#StateList

The problem is the line style="#drawable/text_ops" this should be style="#style/text_ops".
I haven't tried using a selector for styles but it would be cool if it works that way.