Android Studio text all caps is not working - android

ScreenShot
As you can see my text all caps property is not ticked, my design tool window shows text in lower case but my emulator does not. The same thing is happening with my phone. Please help.
Here are my xml code:
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.ishansrivastava.a01_06_05_displaying_images_again.MainActivity">
<include
layout="#layout/reusable_layout"
android:layout_width="0dp"
android:layout_height="83dp"
tools:layout_constraintTop_creator="1"
tools:layout_constraintRight_creator="1"
android:layout_marginStart="3dp"
android:layout_marginEnd="3dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginTop="3dp"
tools:layout_constraintLeft_creator="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginLeft="3dp"
android:layout_marginRight="3dp"
app:layout_constraintHorizontal_bias="0.0"
android:id="#+id/include" />
<ImageView
android:id="#+id/imageView"
android:layout_width="366dp"
android:layout_height="304dp"
app:srcCompat="#drawable/levels"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
android:layout_marginStart="8dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginEnd="8dp"
app:layout_constraintRight_toRightOf="parent"
tools:layout_constraintLeft_creator="1"
android:layout_marginBottom="16dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
app:layout_constraintHorizontal_bias="0.0" />
<TextView
android:id="#+id/textView"
android:layout_width="158dp"
android:layout_height="0dp"
android:layout_marginStart="16dp"
android:gravity="fill_vertical|center_horizontal"
android:text="Plain"
android:textSize="18sp"
tools:layout_constraintBottom_creator="1"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintTop_creator="1"
app:layout_constraintBottom_toBottomOf="#+id/webView"
android:layout_marginTop="15dp"
app:layout_constraintTop_toBottomOf="#+id/include"
android:layout_marginBottom="14dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginLeft="16dp" />
<Button
android:id="#+id/button2"
android:layout_width="155dp"
android:layout_height="53dp"
android:layout_marginEnd="13dp"
android:layout_marginRight="13dp"
android:layout_marginTop="2dp"
android:onClick="onButton2Click"
android:text="Search the Web"
app:layout_constraintRight_toRightOf="#+id/include"
app:layout_constraintTop_toBottomOf="#+id/include"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="1"
tools:textAllCaps="false" />
<WebView
android:id="#+id/webView"
android:layout_width="0dp"
android:layout_height="35dp"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="1"
app:layout_constraintRight_toRightOf="#+id/button2"
android:layout_marginTop="9dp"
app:layout_constraintTop_toBottomOf="#+id/button2"
app:layout_constraintLeft_toLeftOf="#+id/button2" />
</android.support.constraint.ConstraintLayout>
reusable_layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="368dp"
android:layout_height="495dp"
android:gravity="center_horizontal"
android:orientation="vertical"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp"
tools:showIn="#layout/content_main">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="horizontal">
<CheckBox
android:id="#+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Pepperoni" />
<CheckBox
android:id="#+id/checkBox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Extra Cheese" />
</LinearLayout>
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="onButtonClick"
android:text="Show Image"
tools:textAllCaps="false" />
</LinearLayout>


tools:textAllCaps="false" change this in to android:textAllCaps="false"
For your another comment,please check with this,
<style name="AppTheme" parent="AppBaseTheme">
<item name="android:buttonStyle">#style/Button</item>
</style>
<style name="Button" parent="Widget.AppCompat.Button">
<item name="android:textAllCaps">false</item>
</style>
The button text might be transformed to uppercase by your app's theme that applies to all buttons. Check your themes / styles files for setting the attribute android:textAllCaps.


try this in your button
android:textAllCaps="false"
if it don't work than try this my friend than this
<style name="AppTheme" parent="AppBaseTheme">
<item name="android:buttonStyle">#style/Button</item>
</style>
<style name="Button" parent="Widget.AppCompat.Button">
<item name="android:textAllCaps">false</item>
</style>

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StylePlayerView controller xml overriding play and pause button not working

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psdt.- And sorry about mi english because i speak spanish.
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I solved this issue for me by overriding the style and drawables. I created a new style on my values file like below:
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<item name="android:src">#drawable/exo_styled_controls_pause</item>
<item name="android:contentDescription">#string/exo_controls_play_description</item>
<item name="android:padding">#dimen/exo_icon_padding</item>
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<drawable name="exo_styled_controls_play">#drawable/exo_styled_control_play</drawable>
The drawables exo_styled_control_play and exo_styled_control_pause should contain your own drawable code.
Do not forget to invalidate cache and restart if it doesn't work right away.

You can modify the values.xml file in the library.
Go to Project -> Gradle: com.~~.Exoplayer-ui:2.18.0#aar -> res -> values.xml
See values.xml in project view
Search for exo_styled_controls_play or exo_styled_controls_pause
and edit here ----> #drawable/"your image"
This is where you can find the line of code

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<TextView
android:id="#+id/telephoneNumber"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="30dp"
android:text="Telefon numaranızı giriniz"
android:textColor="#color/black"
android:textSize="28sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:layout_width="match_parent"
android:gravity="center"
android:id="#+id/telephoneText"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:textSize="18sp"
app:layout_constraintRight_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/telephoneNumber"
android:text="Taşımaya başlamak için kaydolun, ilk \n olarak telefon numaranızı girin"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/telephoneTag"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_marginTop="40dp"
android:text="Telefon Numarası"
android:textColor="#color/black"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toBottomOf="#id/telephoneText" />
<com.google.android.material.textfield.TextInputLayout
android:elevation="2dp"
app:cardCornerRadius="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/telephoneNumberInput"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/telephoneTag"
android:layout_marginTop="20dp"
app:errorEnabled="true"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
>
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/telephoneNumberEditText"
android:layout_width="match_parent"
android:background="#android:color/transparent"
android:layout_height="match_parent"
android:layout_marginLeft="10dp"
android:inputType="number"
android:hint="+.. ... ... .. .."
android:maxLength="12"
android:textColor="#color/black"
android:textSize="14sp"
/>
</com.google.android.material.textfield.TextInputLayout>
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="60dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginLeft="30dp"
android:layout_marginBottom="30dp"
android:layout_marginRight="30dp"
android:layout_marginTop="10dp"
android:background="#color/purple_500"
android:backgroundTint="#color/purple_500"
android:text="Başlayın"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/telephoneNumberInput" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
My themes.xml file.
<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.UI" parent="Theme.MaterialComponents.DayNight.NoActionBar">
<!-- Primary brand color. -->
<item name="colorPrimary">#color/teal_200</item>
<item name="colorPrimaryVariant">#color/white</item>
<item name="colorOnPrimary">#color/white</item>
<!-- Status bar color. -->
<item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
</resources>

write this on your activity onCreate:
requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
getWindow().setStatusBarColor(Color.TRANSPARENT);
This code piece did the job I desired.

How to style DatePicker on Android

I have date picker which I've tried to customize to a different style but to no avail.
I want to show a DatePicker and not a DatePickerDialog.
In the layout design tab on Android Studio, the DatePicker's background color is black and the text color is white.
However, the datePicker occupies space on the device screen but is not visible.
I've also tried to change the AppTheme.
The DatePicker code is below:
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
</data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.AgeFragment">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:fontFamily="#font/roboto_medium"
android:text="Sign up"
android:textColor="#color/titleBlack"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
app:srcCompat="#drawable/ic_baseline_arrow_back_24"
app:layout_constraintBottom_toBottomOf="#+id/textView"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/textView" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="45dp"
android:fontFamily="#font/roboto_medium"
android:text="When's your birthday?"
android:textColor="#color/titleBlack"
android:textSize="20sp"
app:layout_constraintStart_toStartOf="#+id/imageView"
app:layout_constraintTop_toBottomOf="#+id/textView" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:fontFamily="sans-serif-condensed"
android:text="Your birthday won't be shown publicly"
android:textColor="#7A7474"
android:textSize="16sp"
app:layout_constraintStart_toStartOf="#+id/textView2"
app:layout_constraintTop_toBottomOf="#+id/textView2" />
<DatePicker
android:id="#+id/date_picker2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:calendarViewShown="false"
android:calendarTextColor="#android:color/holo_green_dark"
android:background="#android:color/holo_red_dark"
android:datePickerMode="spinner"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView3"
tools:targetApi="lollipop" />
<Button
android:id="#+id/button2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginLeft="32dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="32dp"
android:layout_marginRight="32dp"
android:background="#color/pinkBtnBackground"
android:fontFamily="sans-serif-medium"
android:text="Next"
android:textAllCaps="false"
android:textColor="#android:color/white"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/date_picker2" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#android:color/transparent</item>
<item name="colorPrimaryDark">#android:color/transparent</item>
<item name="colorAccent">#android:color/transparent</item>
<item name="android:background">#android:color/white</item>
<item name="android:textColor">#color/textColor</item>
<item name="android:datePickerStyle">#style/DatePickerStyle</item>
</style>
<style name="DatePickerStyle">
<item name="android:calendarTextColor" tools:ignore="NewApi">#android:color/holo_green_dark</item>
<item name="backgroundColor">#android:color/holo_red_dark</item>
</style>
The result is still the same. I've searched for answers but none provides a solution to this problem.
Any help or reference to a documentation that provide an explanation would be highly appreciated.

Try removing <item name="android:background">#android:color/white</item> from the style. It is messing with your current Layout

unable to display background color in activity

this is my XML file. I am having trouble while running my app. I have already created same GUI for registration activity but getting problem while designing login activity. I have declared tools:background = "#color/colorPrimary" but unable get colorPrimary . what should I do to solve this error. why I am getting this error. Help me.
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:background="#color/colorPrimary"
tools:context="com.example.pratikrathi.registerapp.RegisterActivity">
<EditText
android:id="#+id/reg_email_text"
android:layout_width="0dp"
android:layout_height="54dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="200dp"
android:backgroundTint="#android:color/white"
android:ems="10"
android:hint="#string/email_hint"
android:inputType="textEmailAddress"
android:paddingVertical="16dp"
android:textColor="#android:color/white"
android:textColorHint="#color/whiteTransparentHalf"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/login_progress" />
<EditText
android:id="#+id/reg_password_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:backgroundTint="#android:color/white"
android:ems="10"
android:hint="#string/password_hint"
android:inputType="textPassword"
android:paddingVertical="16dp"
android:textColor="#android:color/white"
android:textColorHint="#color/whiteTransparentHalf"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/reg_email_text" />
<Button
android:id="#+id/login_btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:backgroundTint="#color/colorAccent"
android:paddingBottom="20dp"
android:paddingTop="20dp"
android:text="#string/login_btn_text"
android:textAllCaps="false"
android:textColor="#android:color/white"
android:textSize="14sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/reg_password_text" />
<Button
android:id="#+id/login_reg_btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="4dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:backgroundTint="#android:color/white"
android:paddingBottom="20dp"
android:paddingTop="20dp"
android:text="#string/login_reg_btn_text"
android:textAllCaps="false"
android:textColor="#color/colorAccent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent" />
<ProgressBar
android:id="#+id/login_progress"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:indeterminate="true"
android:visibility="invisible"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

Simply change tools:background="#color/colorPrimary" to android:background="#color/colorPrimary",
since tools is used for visibility inside android studio in preview

add following code, where you want to apply backgroung:
style="#style/style1"
values/style.xml
<style name="style1">
<item name="android:background">#drawable/custom_color</item>
</style>
drawable\custom_color.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<solid android:color="#color/custom_color" />
</shape>
</item>
values\colors.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="custom_color">#123456</color>
</resources>

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