Develop Reference

How to tint the color of the shadow in Android Switch?

I'm using Material Switch, and I know how to change the colors of the track and the thumb, but how do you change the color of the radiant shadow?
I have changed the color to purple, but when I tap on it, there is still that green shadow. I've tried styles, appcompat switch, etc but nothing worked.
Here is my code:
<com.google.android.material.switchmaterial.SwitchMaterial
android:id="#+id/switch_compat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:trackTint="#color/purple_500"
app:thumbTint="#color/purple_700"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
Thanks!

You can change the color of the ripple using
<item name="colorControlHighlight">#color/purple_700</item>
But you will need to define two styles for this either in styles.xml or themes.xml:
<style name="SelectableItemBackgroundBorderless">
<item name="android:theme">#style/SelectableItemTheme</item>
<item name="android:background">?attr/selectableItemBackgroundBorderless</item>
</style>
<style name="SelectableItemTheme">
<item name="colorControlHighlight">#color/purple_700</item>
</style>
Then define style attribute for you switch:
style="#style/SelectableItemBackgroundBorderless"
So your Switch will be:
<com.google.android.material.switchmaterial.SwitchMaterial
android:id="#+id/switch_compat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:trackTint="#color/purple_500"
app:thumbTint="#color/purple_700"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
style="#style/SelectableItemBackgroundBorderless" />
EDIT:
You can change the color of ripple on OFF state and ON state. No need to use the first style. Just define theme, no need to define style:
android:theme="#style/SelectableItemTheme"
Define in styles:
<style name="SelectableItemTheme">
<item name="colorControlHighlight">#color/purple_500</item>
<item name="colorControlActivated">#color/purple_700</item>
</style>

Remove edittext indicator (underline) - Material Design

I need to remove underline of TextInputLayout. Its almost removed but showing little parts on start and on the end (black). It shows only when activated Screen below
style:
<style name="EditTextLoginRegister" parent="Widget.MaterialComponents.TextInputLayout.FilledBox">
<item name="boxCornerRadiusBottomEnd">8dp</item>
<item name="boxCornerRadiusBottomStart">8dp</item>
<item name="boxCornerRadiusTopEnd">8dp</item>
<item name="boxCornerRadiusTopStart">8dp</item>
<item name="boxStrokeWidth">0dp</item>
<item name="boxStrokeColor">#android:color/transparent</item>
<item name="boxBackgroundColor">#color/grey</item>
<item name="android:textColorHint">#color/greyLight2</item>
<item name="startIconTint">#color/greyLight2</item>
<item name="endIconTint">#color/greyLight2</item>
<item name="hintTextColor">#color/violet</item>
</style>
and the TextInputLayout:
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/tl_email_login"
style="#style/EditTextLoginRegister"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="24dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="24dp"
android:hint="#string/e_mail"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/tv_header_login"
app:startIconDrawable="#drawable/ic_user">
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/et_email_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:textColor="#color/greyLight" />
</com.google.android.material.textfield.TextInputLayout>

Try adding boxStrokeWidthFocused to your style
<style name="EditTextLoginRegister" parent="Widget.MaterialComponents.TextInputLayout.FilledBox">
<!-- Other attributes -->
<item name="boxStrokeWidthFocused">0dp</item>
</style>
Admittedly, this is the most difficult part -> styling Material design views.
In Android Studio, it is possible to get AutoComplete options, and I usually go through the complete list and try out various items.

Wrap button around icon?

how can i remove that gap after the icon? how can i Wrap button around icon normally?
<Button
android:layout_marginStart="4dp"
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="#color/white"
app:icon="#drawable/googleg_standard_color_18"
app:iconTint="#null"/>

I dont see any direct way of doit it but did some tweak to help you out
Create Button without wrap content give some width as per your design look and feel.
<Button
android:id="#+id/button"
android:layout_width="42dp"
android:layout_height="wrap_content"
android:drawableLeft="#drawable/ic_google_hangouts"
app:backgroundTint="#android:color/white" />
In code do the following changes and play with adjusting padding per your requirement.
val button = findViewById<Button>(R.id.button)
button.setPadding(24,0,0,0)
the image dimension which I used for testing is 24dpX24dp
my final result:

You can use a ImageButton as suggested in the comments
You can use the MaterialButton with this style:
<style name="Widget.MaterialComponents.Button.IconOnly">
<item name="iconPadding">0dp</item>
<item name="android:insetTop">0dp</item>
<item name="android:insetBottom">0dp</item>
<item name="android:paddingLeft">12dp</item>
<item name="android:paddingRight">12dp</item>
<item name="android:minWidth">48dp</item>
<item name="android:minHeight">48dp</item>
<item name="iconGravity">textStart</item>
</style>
Something like:
<com.google.android.material.button.MaterialButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="#style/Widget.MaterialComponents.Button.IconOnly"
app:icon="#drawable/...."
app:iconTint="#null"/>

drawable start not working with material button

Here is the button :
<Button
android:id="#+id/btn_choose_photo"
style="#style/Widget.MaterialComponents.Button.TextButton.Dialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:drawableStart="#drawable/ic_camera"
android:drawablePadding="8dp"
android:text="#string/image_picker_dialog_choose_image"
android:textAlignment="textStart" />
I am using material themes, so this will be inflated into a material button
drawableStart has no effect at all, however drawableEnd, bottom and top work just fine
When I make the button tag a text view, drawableStart works
It seems like a bug or maybe I am missing something ?
Edit: My app theme is as follows :
<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
<!---colors-->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryVariant">#color/colorPrimaryVariant</item>
<item name="colorPrimaryDark">#color/colorPrimaryVariant</item>
<item name="colorSecondary">#color/colorSecondary</item>
<item name="colorSecondaryVariant">#color/colorSecondaryVariant</item>
<item name="colorAccent">#color/colorSecondary</item>
<!--
<item name="android:colorBackground">#color/colorBackground</item>
-->
<!--components-->
<item name="textInputStyle">#style/text_input_layout_style</item>
<item name="bottomSheetDialogTheme">#style/bottom_sheet_dialog_theme</item>
<item name="spinnerStyle">#style/spinner_style</item>
<item name="android:spinnerStyle">#style/spinner_style</item>
<item name="android:toolbarStyle">#style/toolbar_style</item>
<item name="toolbarStyle">#style/toolbar_style</item>
<item name="actionOverflowButtonStyle">#style/overflow_button_style</item>
<item name="android:actionOverflowButtonStyle">#style/overflow_button_style</item>
</style>

You should use app:icon like this:
In the layout:
<Button
...
app:icon="#drawable/ic_camera"
style="#style/Widget.MaterialComponents.Button.TextButton"
/>
It is displayed at the start, before the text label. You can change icon gravity, tint or size.
For more information

Using
android:drawableLeft
will solve the problem, but will not give you RTL(Right to left) support. If your end user uses a different language which follow RTL, then your Button will not support it.
Are you managing the Button's property in the Activity or Fragment, as technically speaking,
android:drawableStart
should work.

You can change to "App compat button"
<androidx.appcompat.widget.AppCompatButton
android:id="#+id/continuar_anonimo_button"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="center"
app:backgroundTint="#color/greenPrimary"
android:background="#drawable/corner_boton_outline"
android:text="Continuar anonimamente"
android:paddingLeft="15dp"
android:drawableStart="#drawable/ic_google_color"
style="?android:textAppearanceSmall"/>

Use android:drawableLeft
android:drawableLeft="#drawable/ic_phone"
android:backgroundTint="#android:color/white"

When using Theme.MaterialComponents.Light.NoActionBar style, setting Button Background has no effect

In order to use Chip and ChipGroup, I set Application style extends Theme.MaterialComponents.Light.NoActionBar int manifests.xml, then I set Button "android:background" attr, but it does not effect! why? and what can I do?
This is my style:
<style name="AppBaseTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
<item name="colorPrimary">#color/primary_material_light</item>
<item name="colorPrimaryDark">#color/header_color</item>
<item name="actionBarSize">48dp</item>
<item name="android:screenOrientation">portrait</item>
<!--<item name="buttonStyle">#style/AntButton</item>-->
<!--<item name="materialButtonStyle">#style/AntButton</item>-->
<!--<item name="android:button"></item>-->
<!--<item name="android:progressTint">#color/ffc000</item>-->
<item name="colorAccent">#color/ffc000</item>
</style>
<style name="AntButton" parent="android:Widget">
<item name="android:background">#drawable/abc_btn_default_mtrl_shape</item>
<item name="android:textAppearance">?android:attr/textAppearanceButton</item>
<item name="android:minHeight">48dip</item>
<item name="android:minWidth">88dip</item>
<item name="android:focusable">true</item>
<item name="android:clickable">true</item>
<item name="android:gravity">center_vertical|center_horizontal</item>
<!--<item name="android:colorButtonNormal">#color/white</item>-->
</style>
I have tried to change buttonStyle and materialButtonStyle, but not effect too!
this is my layout XML:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/ll_popup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="#color/white"
android:divider="#drawable/shape_divider_05dp"
android:orientation="vertical"
android:showDividers="beginning|middle">
<!--only can use backgroundTint to change background color-->
<Button
android:id="#+id/item_popupwindows_Photo"
android:layout_width="match_parent"
android:layout_height="55dp"
android:backgroundTint="#color/white"
android:text="Pictrue"
android:textColor="#color/c_666666"
android:textSize="16sp" />
<!--background not effect !!-->
<Button
android:id="#+id/item_popupwindows_cancel"
android:layout_width="match_parent"
android:layout_height="55dp"
android:background="#color/white"
android:text="cancel"
android:textColor="#color/c_666666"
android:textSize="16sp" />
</LinearLayout>
</LinearLayout>
this is result :
Because I have used Chip and ChipGroup in APP, I have to user theme extends MaterialComponents! do you know how to resolve it ？please tell me, thanks!
in this page Can't use android:background with button from the new material components, the author wants to change the default padding, but I want to change the backgroundDrawable, so, it does not work for me.

If you want a true Button, but one that you can modify like the framework Button (instead of the MaterialButton), then you can explicitly specify the framework version in your layout file. Replace this:
<Button
android:id="#+id/item_popupwindows_cancel"
... />
with this:
<android.widget.Button
android:id="#+id/item_popupwindows_cancel"
... />
This will give you what it says on the tin: an android.widget.Button, which should respond to styling the way you expect.
Similarly, you could use a <androidx.appcompat.widget.AppCompatButton> if you want support library features but not material components features.

In this particular case, the LinearLayout holding your second Button seems to have a white background color. That means you don't need to explicitly specify a white background for your Button; you can just let the LinearLayout's background show through.
This can be accomplished by using the "Text Button" style of MaterialButton:
style="#style/Widget.MaterialComponents.Button.TextButton"

Use this code for change the color
app:backgroundTint="#color/primaryColor"

You can also use ImageButton instead of Button from material components. android:background is working on ImageButton.
<ImageButton
android:id="#+id/item_popupwindows_cancel"
... />