Develop Reference

Spinner DatePicker does not change text color

I am trying to change the text color from the DatePicker using an XML style with no luck. My app theme is Theme.MaterialComponents.Light and the style code that I am using is the following.
<style name="MyDatePicker" >
<item name="android:textColorPrimary">#color/textColorPrimary</item>
<item name="colorControlNormal">#color/colorAccent</item>
</style>
<DatePicker
android:id="#+id/datePicker"
style="#style/MyDatePicker"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:datePickerMode="spinner" />
I have seen many posts tackling this issue, but unfortunately none of the answers worked for me. I am using version 1.2.0 of the material library.
Is there any other way to solve this issue? Thanks!

Since DatePicker is a ViewGroup, you apply the defined style to it (and its children) using the theme attribute.
style, in contrast, is applied to the parent DatePicker only and its children remain unaffected.
So change to:
android:theme="#style/MyDatePicker"

How do you set a default textColor inside a LinearLayout that contains multiple TextViews?

I have a LinearLayout with that has multiple TextViews and want to set up a default global color for that layout only without having to add a textColor field inside each TextView. Also, if it's possible, would it also be possible to override the color value by adding it inside the TextView? i.e. If I set blue as a default color and black for a single TextView, would the blue change to black?

To set the default global TextView colors, first you can create your own theme in AndroidManifest.xml file for the following items:
textColorPrimary - for Large texts
textColorSecondary - for Medium texts
textColorTertiary - for Small texts
textColorHint - for Hint texts
For example, in AndroidManifest.xml:
<style name="TextViewTheme" parent="android:Widget.TextView">
<!-- Set the default global color for TextViews to Holo Blue Dark -->
<item name="android:textColorPrimary">#android:color/holo_blue_dark</item>
<item name="android:textColorSecondary">#android:color/holo_blue_dark</item>
<item name="android:textColorTertiary">#android:color/holo_blue_dark</item>
<item name="android:textColorHint">#android:color/holo_blue_dark</item>
</style>
Next, set the theme style on your LinearLayout. You can also override the default for a single TextView to black color, like the following which set the first TextView Hint text color to black in activity_main.xml:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:theme="#style/TextViewTheme">
<TextView
android:id="#+id/phone_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/phone_tv"
android:textColor="#android:color/black"
android:textColorHint="#android:color/black" />
<TextView
android:id="#+id/email_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/email_tv" />
</LinearLayout>
Hope this helps!

You can override default text colors for the entire application by setting textColorPrimary and textColorSecondary in your parent in styles.xml
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
<item name="textColorPrimary">#color/black</item>
<item name="textColorSecondary">#color/grey</item>
</style>

If your TextViews are indeed very many to the extent that calling setTextColor() on each of them would be a herculean task, why not use a view that supports an adapter (i.e ListView, RecyclerView etc). Your TextViews would show up the exact same way as you intend them to appear with the LinearLayout.
While using an adapter, you can set up a model TextView layout and set a global textColor for all the TextViews. You can override this global textcolor in your adapter by using simple if and else statements.
I hope this helps.. Merry coding!

This code will work even if you add or remove TextViews from your layout. Just put it in your activity's onCreate();
LinearLayout layout = (LinearLayout)findViewById(R.id.layout);
for (int i = 0; i < layout.getChildCount(); i++) {
View v = layout.getChildAt(i);
if (v instanceof TextView) {
((TextView) v).setTextColor(Color.BLACK);
}
}
change the color to what you like.
If you want after this code you can change the color for any specific TextView.

Pretty late answer but this does the trick.
Inside style.xml lately changed to themes.xml
<style name="ErrorStyle">
<item name="android:textColor">#FF0000</item>
</style>
Then inside your xml layout
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:theme="#style/ErrorStyle">
.. All of your TextView
</LinearLayout>
Using this approach we can use other xml variation such as night mode, etc... and we still have te possibility to override the internal TextViews.

Android WebView bigger DatePicker

I'm developing an Android Hybrid App for Tablets (Android WebView with local HTML5 Website). Inside my WebApp is a DatePicker
<input type="date">
Which looks like this:
It's very tiny on that big screen. So I was wondering if it's possible to increase the font size of that date picker or even to make it full screen.
Also is there a way to change the Theme of the DatePicker? I prefer a bright theme over that dark one.
Thank you in advance.

As i understood u want to increase size of font ... visit this link
<style name="datepickerstyle" parent="Theme.AppCompat.Light">
<item name="colorControlNormal">#color/colorPrimary</item>
<item name="colorControlActivated">#color/colorPrimaryDark</item>
<item name="android:editTextStyle">#style/editTextStyle</item>
</style>
<style name="editTextStyle" parent="android:style/Widget.EditText">
<item name="android:textColor">#color/colorTextPrimary</item>
<item name="android:textSize">#dimen/text_20</item>
</style>
<DatePicker
android:theme="#style/datepickerstyle"
android:id="#+id/timepicker" android:timePickerMode="spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
update try below code to resize font
DatePicker picker = (DatePicker)findViewById(R.id.dp_date);
ViewGroup childpicker
= (ViewGroup)
findViewById(Resources.getSystem().getIdentifier("month" /*rest is:
day, year*/, "id", "android"));
EditText textview = (EditText)
picker.findViewById(Resources.getSystem().getIdentifier("timepicker_input",
"id", "android"));
textview.setTextSize(30);
textview.setTextColor(Color.GREEN);
///or u can below also
ViewGroup childpicker = (ViewGroup)datePicker.findViewById(Resources.getSystem().getIdentifier("month", "id", "android"));
EditText mornthEt = (EditText)childpicker.getChildAt(1);// month widget
//change textsize and textcolor for mornthEt
mornthEt.setTextSize(30);
mornthEt.setTextColor(Color.GREEN);

How to change to text colour of the Cut/Copy/Paste popup menu

I have the following in my styles.xml
<style name="dialog_style" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="colorAccent">#ffaaaa00</item>
<item name="android:background">#ff444400</item>
<item name="android:textColorPrimary">#ffa25600</item>
</style>
(The horrible colours are for testing only!)
This gives the following
What I want is a dark/black background but when I do that, the text is unreadable.
Q: How do I change the text colour of "Cut", "Copy"...?
tia,
Kevin

I think it's a little bit better solution than user3247782's,
<style name="CustomAlertDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
...
<item name="android:popupBackground">#android:color/transparent</item>
</style>

You can change them by following style names:
<item name="colorAccent">#color/twoCuteSelectionHandlersColor</item>
<item name="android:textColorHighlight">#color/selectionColor</item>
Also you can set highlight color directly for pacific EditText using android:textColorHighlight attribute in xml layout or programmatically:
et.setHighlightColor(color);
For context menu you need create your own context menu. check this question for how disabling default context menu and implementing custom menu.

This isn't really an answer. The black-on-black edit menu is only generated from an EditText contained in an AlertDialog. The same code in a Fragment gives black-on-white.
So I "solved" my problem by converting the AlertDialog into a Fragment.
The original question, though, is still unanswered.

Alert Dialog and Popup Menu generaly take the color of #ColorAccent as the background. So try changing the colorAccent or just inflate a custom xml with the specifications you want.

Just change the parent of it from Theme.Material.Light to Theme.Material .
It will make the text white, there.

I fixed it by setting a background color with opacity in the style of the alertdialog
In styles.xml
<style name="AppCompatAlertDialogStyle">
...
<item name="android:background">#color/black_overlay</item>
...
</style>
In colors.xml
<color name="black_overlay">#66000000</color>

If you use MaterialAlertDialogBuilder then you can define background color through colorSurface attribute.
Then in styles you can just set background to transparent.
android:background="#android:color/transparent"
Dialog will use the one define in colorSurface and "copy/paste" will use default system colors (e.g. white).

EditText with custom theme shows underline under selection handle

i am trying to modify the underline color of a EditText by applying a theme.
Style:
<style name="MyTheme.EditText" parent="Widget.AppCompat.EditText">
<item name="colorControlActivated">#color/green</item>
</style>
EditText:
<EditText
android:id="#+id/editText_amount"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/hint_enter_amount"
android:theme="#style/MyTheme.EditText"/>
Basically it works, but when i try to select or move the cursor the selection handle is also underlined. You can see this in the screenshot.
Does someone know how to fix this?

You can use this style as a
<EditText
style="#style/MyTheme.EditText"/>
Or, you can separate your theme for referencing the editTextStyle attribute.
<style name="MyEditTextStyle" parent="Widget.AppCompat.EditText">
<item name="colorControlActivated">#color/green</item>
</style>
<style name="MyTheme.EditText">
<item name="editTextStyle">#style/MyEditTextStyle</item>
</style>
<EditText
android:theme="#style/MyTheme.EditText"/>
Alright, but where are these underlines come from?
android:theme is an attribute of View and when you set a style as android:theme, that style will be wrapped by ContextThemeWrapper with context theme while in inflation of view.
So that means, if you set android:theme property with style that contains android:background item like
<item name="android:background">#color/green</item>
every child view of this theme owner will be have a green background.
"Widget.AppCompat.EditText" is a style and references ?attr/editTextBackground as a "android:background". And in v21/values-21.xml file #drawable/abc_edit_text_material is defined as editTextBackground.
So, for your example, #drawable/abc_edit_text_material becomes a background of your EditText and SelectionHandlers.

You should remove parent attribute. This is caused only API 23 device.
<style name="MyTheme.EditText">
<item name="colorControlActivated">#color/green</item>
</style>

I had the same issue.
My layout shows a Edittext inside a blue box. There i wanted to have a white text and a white underline and a white selection control.
I've set all in my AppTheme. All fine!
But i also had a Recyclerview blow the blue box. The RecyclerView has white cards that contains Edittext. White text, underline and control makes no sense in white cards. :)
So i tried to change the color of the text, underline and controls to dark gray. But with no success. I had the same issues with the control like in this question.
I tried using the solved answer, but this didn't helped me.
Maybe my fault, don't know.
So i post here my solution, even the question already answered.
Inside the styles.xml i added:
<style name="RecyclerEditText">
<item name="colorAccent">#color/darkGray</item>
<item name="colorControlNormal">#color/darkGray</item>
<item name="colorControlActivated">#color/darkGray</item>
</style>
and in the layout xml i added inside edittext:
android:textColor="#color/darkGray"
android:textColorHint="#color/darkGray"
android:theme="#style/RecyclerEditText"
--
Now i have no offset in control icon, and no double underline.
Thanks a lot #litmon !
You pushed me to the "remove parent" idea.