Develop Reference

Change EditText long click menu text color

For some reason the menu that comes up on long click (for copy/paste/cut/etc...) in my EditText have white text color on a white background so it's unreadable.
I searched quite a lot on this forum but haven't found answer that would have worked so far, I have also tried adding a custom popup style for the base theme as well as for the EditText style with colorAccent, color and textColor changed, like this:
<style name="Base.AppTheme" parent="Theme.AppCompat.NoActionBar">
<!-- Tried all 3 separately -->
<item name="android:popupMenuStyle">#style/CustomPopup</item>
<item name="popupMenuStyle">#style/CustomPopup</item>
<item name="popupTheme">#style/CustomPopup</item>
</style>
<style name="Style.Input.EditText" parent="Widget.AppCompat.EditText">
<!-- Tried all 3 separately -->
<item name="android:popupMenuStyle">#style/CustomPopup</item>
<item name="popupMenuStyle">#style/CustomPopup</item>
<item name="popupTheme">#style/CustomPopup</item>
</style>
<style name="CustomPopup" parent="Widget.AppCompat.Light.PopupMenu">
<item name="android:colorAccent">#000000</item>
<item name="android:color">#000000</item>
<item name="android:textColor">#000000</item>
</style>
Unfortunately it did not work.
Does anyone know of a way to customise this menu, the text color in particular?

Check the theme style
<item name="android:background">#FFFFFF</item>
It's highly likely that you have it set to WHITE and the text is already being set to WHITE. I would comment out this line where you're setting the background color and see if you can't figure it out from there. This was my issue.

How can I change Edit Text´s selection color?

Description:
When you keep pressed an edit text (in order to select text), an indicator appears (i don´t know it´s name).
Question:
How can i edit it´s color?
Thanks so much for reading.

Write this to your style.xml
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- change values below to make same eefect for all EditTexts ->
<item name="colorControlNormal">#c5c5c5</item>
<item name="colorControlActivated">#color/accent</item>
<item name="colorControlHighlight">#color/accent</item>
</style>
<!-- also you can create different styles with values above for many different views ->

Android TimePickerDialog styling guide/docs?

I'm trying to style a TimePickerDialog for sdk 21+ (Lollipop). So far I've figured out how to change the default colorscheme in XML:
<style name="TimePickerTheme" parent="#style/Theme.AppCompat.Light.Dialog">
<item name="colorPrimary">#ff2d6073</item> <!-- no effect -->
<item name="colorPrimaryDark">#ff2d6073</item> <!-- no effect -->
<item name="colorAccent">#ff2d6073</item>
<item name="android:textColor">#ffD0D102</item>
<item name="android:textColorPrimary">#ffD0D102</item>
</style>
This works but I'm looking for a guide or documentation for all the properties I can change.
AccentColor does the basic color scheme
TextColorPrimary does the text color
But what property, for example, do I need to change the big text in the 'header' of the dialog (where the current selected time is displayed)?
Is there some documentation that lists all the possible things you can change?

After digging through the AOSP theme and style xml files and a lot of googling I made some progress. I am now able to style most(!) things.
So this is a partial answer, not all the way there yet. But here's how far I got:
You can see that I'm now able to theme the header, the un(!)selected time part (minutes in this case), the circle, the numbers in that circle and the 'hand' (or selector). Oh, and the buttons are styled, too.
Let me explain how I got things working, first: the important thing is that you can't override things directly from you app's theme OR from a (alert)dialog theme/style. You have to go from one to the next, so to speak.
Example:
AndroidManifest.xml: Set custom theme for app and/or activity
<activity>
android:theme="#style/Theme.MyTheme"
</activity>
values-v21/styles.xml: (where your custom theme resides): set the timePickerDialogTheme
<style name="Theme.MyTheme" parent="#style/Theme.AppCompat.Light">
<item name="android:timePickerDialogTheme">#style/TimePickerDialogTheme</item>
</style>
Then below that, define the timePickerDialogTheme and set the timePickerStyle:
<style name="TimePickerDialogTheme" parent="#style/Theme.AppCompat.Light.Dialog">
<item name="colorAccent">#ff2d6073</item> <!-- colorAccent here seems to work just fine? -->
<item name="android:timePickerStyle">#style/TimePickerDialogStyle</item>
</style>
Now you can define most of the styling here..
<style name="TimePickerDialogStyle" parent="#android:style/Widget.Material.Light.TimePicker">
<item name="colorAccent">#ff2d6073</item> <!-- colorAccent here seems to work just fine? -->
<item name="android:timePickerMode">clock</item>
<item name="android:headerBackground">#ff2d6073</item>
<item name="android:headerTimeTextAppearance">#style/TextAppearance.TimePickerDialogStyle.TimeLabel</item> <!-- TimePicker Time *TextAppearance* -->
<item name="android:numbersTextColor">#ff000000</item>
<item name="android:numbersSelectorColor">#ff2d6073</item>
<item name="android:numbersBackgroundColor">#ffdddddd</item>
</style>
The important line in the above is:
<item name="android:headerTimeTextAppearance">#style/TextAppearance.TimePickerDialogStyle.TimeLabel</item>
Because if you want to style the text (well, time, actually) in the header you need to define the headerTimeTextAppearance:
<style name="TextAppearance.TimePickerDialogStyle.TimeLabel" parent="#android:style/TextAppearance.Material">
<item name="android:textSize">60sp</item> <!-- from -->
<item name="android:textColor">#ffD0D102</item>
</style>
Now, if you take a look at the Widget.Material.TimePicker in AOSP styles.xml (ctrl-f 'timepicker' until you find it) you'll notice a bunch of other properties that you should be able to modify:
headerTimeTextAppearance
headerAmPmTextAppearance
headerSelectedTextColor
headerBackground
numbersTextColor
numbersBackgroundColor
amPmTextColor
amPmBackgroundColor
amPmSelectedBackgroundColor
numbersSelectorColor
Most of these work (as long as you prepend 'android:' for each of them) BUT I could not get 'headerSelectedTextColor' to work. I got a compile error saying something like "could not match property bla bla". Also, if you look at my example above, I hardcoded the textSize for the 'headerTimeTextAppearance' property because the '#dimen/timepicker_ampm_label_size' value threw errors.
In short: most of the things are listed above and how to get them working. But not all is clear. So I'd still see that complete documentation/guide :)

Android TimePicker material style with custom colors below, you can see http://www.zoftino.com/android-timepicker-example for TimePicker usage and styles.
<style name="MyAppThemeFour" parent="Theme.AppCompat.Light">
<item name="android:timePickerDialogTheme">#style/MyTimePickerDialogStyle</item>
</style>
<style name="MyTimePickerDialogStyle" parent="#style/ThemeOverlay.AppCompat.Dialog.Alert">
<item name="showTitle">false</item>
<item name="colorControlActivated">#ffd600</item>
<item name="colorAccent">#b71c1c</item>
<item name="android:textColorPrimary">#43a047</item>
<item name="android:textColorSecondary">#f44336</item>
</style>

When using version 1.5.0 of the Material Design Library for Android, I've found that I can get most of the theming with using this particular style:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="MyTimePickerTheme" parent="ThemeOverlay.MaterialComponents.TimePicker">
<item name="android:textColor">#FF121212</item>
<item name="android:textColorPrimary">#FF121212</item>
<item name="android:textColorSecondary">#FFF9F9F9</item>
<item name="colorAccent">#FF121212</item>
<item name="colorControlNormal">#FF121212</item>
<item name="colorPrimary">#FF121212</item>
<item name="colorSurface">#FFF9F9F9</item>
</style>
</resources>
This will yield in a generic - non colored - Dialog which works for white theme. For dark theme, simply invert the colors.
I've also asked here to have dynamic theming supported for this component.
Example screenshot using the above style:

Change holo spinner text colour

I have a spinner in a Holo theme dialog and am trying to change the text colour because it is very hard to read:
I have looked at android styles.xml, as well as many other answers, and believe that I am setting the custom style correctly; but it's just not getting picked up.
This is an extract from the dialog layout file where the spinner lives:
<Spinner
android:id="#+id/spn_Type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:entries="#array/dose_type_options"
style="#style/DialogSpinner" />
And these are the relevant entries in styles.xml in the values-v14 folder:
<style name="DialogSpinner" parent="#android:style/Widget.Holo.Spinner">
<item name="android:spinnerItemStyle">#style/MySpinnerItem</item>
</style>
<style name="MySpinnerItem" parent="android:Widget.Holo.TextView.SpinnerItem">
<item name="android:textAppearance">#style/MyTextAppearanceSpinnerItem</item>
</style>
<style name="MyTextAppearanceSpinnerItem" parent="android:TextAppearance.Holo.Widget.TextView.SpinnerItem">
<item name="android:textColor">#FFF</item>
</style>
The dialog itself is forced to the Holo dark theme by using:
<style name="FibroDialog" parent="#android:style/Theme.Holo.Dialog">
</style>
Can anyone identify why the spinner text isn't white?
I have looked at other solutions, which suggest changing the colour in code, but this app supports 2.3.* upwards, so for those non-holo versions black text is fine, hence trying to do it by styles.
Thanks
Updated using answer from Woda below
The text colour of the initial value of the spinner is now white, which goes a long way to highlighting that there is a spinner there for the user:
But the text colour of the selectable items is still black. I guess it's not a massive deal, at least the existence of the spinner has been affirmed by getting the initial text changed to white. But I would be interested to know why the items are still black, and how to change them to white.

Have you tried to accept the SpinnerItemStyle to your Theme? So all Spinners in your App would've the same style. I'm using it like this and it works:
theme.xml:
<style name="exampleTheme" parent="android:Theme.Holo.Light">
<item name="android:spinnerItemStyle">#style/SpinnerItem_example</item>
...
</style>
style.xml:
<style name="SpinnerItem_example" parent="android:TextAppearance.Widget.TextView.SpinnerItem">
<item name="android:textColor">#000000</item>
</style>
Update:
Taking a deeper look into the styles.xml brought me this:
<style name="Widget.DropDownItem.Spinner">
<item name="android:checkMark">?android:attr/listChoiceIndicatorSingle</item>
</style>
<style name="Widget.DropDownItem">
<item name="android:textAppearance">#style/TextAppearance.Widget.DropDownItem</item>
<item name="android:paddingStart">#dimen/dropdownitem_text_padding_left</item>
<item name="android:paddingEnd">#dimen/dropdownitem_text_padding_right</item>
<item name="android:gravity">center_vertical</item>
</style>
So you probably need to customize the Widget.DropDownItem and accept it in your theme.
...
<item name="dropDownItemStyle">#android:style/Widget.DropDownItem</item>
...
For customizing my application the following two links helped me a lot to understand the structure of the different views. These two files are part of the android source code. May be it helps you too.
themes.xml
styles.xml

I fixed it by calling
mArrayAdapter.setDropDownViewTheme(mActivity.getTheme());
Hope this helps someone ;)

You can access the internal TextView in code without changing any styles. This is how I handled enabling and disabling Spinners
The .getSelectedView() did not work for me. So I tricked the Spinner to "show" being disabled.
You will need to define your own colors for the "disabled" look.
For Example:
R.color.blue_text //means enabled
R.color.gray_text //means disabled
So to disable my spinner:
((TextView)mySpinner.getChildAt(0)).setTextColor(getResources().getColor(R.color.gray_text));
mySpinner.setEnabled(false);
mySpinner.setFocusable(false);
To enable my spinner:
((TextView)mySpinner.getChildAt(0)).setTextColor(getResources().getColor(R.color.blue_text));
mySpinner.setEnabled(true);
mySpinner.setFocusable(true);
The getChildAt(0) function allows you to access the first item in the spinner, which is what you show on the screen as a TextView.
You don't need to change styles or modify any XML. Just do this in your code, even within event methods, you should be fine.

Setting Application theme textColor to white causes Context Menu item text to be white (invisible)

Ok, this is driving me bonkers. To skin my app, I set the following in my theme:
<item name="android:textColor">#FFFFFF</item>
All the text in the app turns white, unless I manually override it in the layout xmls. Great, yay, easy peasy. EXCEPT that the text in my menu options for context menus (off of lists and such) have also decided to become white.
This is not so great, since it is hard to read white on white. I have tried a variety of solutions, including searching for how to change the text color of a context menu (no dice)and creating a textAppearance item in my theme. The last solution didn't change all the textfields in my app, which was frustrating.
So, any suggestions? Hopefully my dilema is clear.

In your styles.xml try overriding the textViewStyle instead of just ALL textColor attributes:
<style name="Theme.Blundell.Light" parent="#android:style/Theme.NoTitleBar">
<item name="android:windowBackground">#drawable/background_light</item>
<item name="android:textViewStyle">#style/Widget.TextView.Black</item>
</style>
<style name="Widget.TextView.Black" parent="#android:style/Widget.TextView">
<item name="android:textColor">#000000</item>
</style>
You could even take it one further and just override the color for a certain view, like buttons:
<style name="Widget.Holo.Button" parent="#android:style/Widget.Holo.Button">
<item name="android:textColor">#FFFFFF</item>
</style>
<style name="Theme.Blundell" parent="#android:style/Theme.Holo.NoActionBar">
<item name="android:colorBackground">#android:color/transparent</item>
<item name="android:buttonStyle">#style/Widget.Holo.Button</item>
</style>
If your inspired to do any more theming check out the Android source it's the best place to realise what you can and can't do!:
https://github.com/android/platform_frameworks_base/tree/master/core/res/res/values

Use this:
parent="Theme.AppCompat.Light.DarkActionBar"