Develop Reference

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"
... />

Material Raised Button with Default Background

I am trying to create a button whose text color is the colorAccent and whose background color is the default background color.
It looks like this:
I have tried default styles, but non of them have worked. Currently I have something like this but doesn't work:
styles.xml :
<style name="AppTheme.ButtonRaised" parent="Widget.AppCompat.Button.Colored">
<item name="colorButtonNormal">#android:color/transparent</item>
<item name="android:textColor">#color/colorAccent</item>
</style>
And layout:
<Button
app:theme="#style/AppTheme.ButtonRaised"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="date" />
And I am getting something like this:
I am not getting any effect of style or theme here. I have also tried with style tag, but it doesn't work.

apply theme with a style like this
<style name="ThemeButtonBlue" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorAccent">#color/colorPrimary</item>
<item name="colorButtonNormal">#android:color/transparent</item>
<item name="colorControlNormal">#color/white</item>
<item name="colorControlActivated">#color/colorPrimaryDark</item>
<item name="colorControlHighlight">#color/colorPrimary</item>
</style>

I am also struggling to do this effect. I could achieve something similar, but I don't know if its "material design approved".
I set the style to their button borderless colored and the elevation to 2dp because on material design they say that "Raised buttons have a default elevation of 2dp". But they don't give you xml layout examples which is annoying -_-
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
style="#style/Base.Widget.AppCompat.Button.Borderless.Colored"
android:elevation="2dp"
android:text="Button"/>
Keep in mind that the elevation tag does not show a shadow pre Lollipop devices.

Apply style only to specific TextViews

I have two themes that I switch back and forth between in my Android application. In some places, I have TextViews that I want to remain the default color. In other places, I want them to be another color (let's say orange). When changing themes, I'd like only the TextViews that were previously orange to become blue.
Is there a way to do this simply in Android? I had something in mind such as a class tag in html/css but can't seem to find anything.
EDIT: To clarify what I was referring to with the html/css equivalent:
<div>This text is black</div>
<div class="redDiv">This text is red</div>
.redDiv {
color:red;
}

Let's say you have two themes in your application: MyFirstTheme and MySecondTheme:
<style name="MyFirstTheme" parent="android:Theme">
<item name="android:textViewStyle">#style/MyFirstTheme.TextView</item>
[...]
</style>
<style name="MySecondTheme" parent="android:Theme">
<item name="android:textViewStyle">#style/MySecondTheme.TextView</item>
[...]
</style>
The textview styles defined in your styles.xml could look like:
<style name="MyFirstTheme.TextView" parent="#android:style/Widget.TextView">
<item name="android:textColor">#android:color/black</item>
[...]
</style>
<style name="MySecondTheme.TextView" parent="#android:style/Widget.TextView">
<item name="android:textColor">#color/orange</item>
[...]
</style>
<style name="PersistentTheme.TextView" parent="#style/MyFirstTheme.TextView">
<item name="android:textColor">#color/red</item>
</style>
So when you have a layout with two TextViews, you can have the one completely follow the active theme by not setting anything extra to it, and you can apply other appearance to your other TextView instance by specifying a style attribute for it:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<!-- This textview will change text color when other style applied -->
<TextView
android:id="#+id/tv_styledependent"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<!-- This textview will always have the same (red) text color -->
<TextView
android:id="#+id/tv_persistent"
style="#style/PersistentTheme.TextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/tv_styledependent" />
</RelativeLayout>

change in activity style deforms button

I want to change the style of my action bar (change the color and text font) and so set up my manifest and style XML as follows:
Manifest:(application)
android:theme="#style/ArbuckleAppTheme"
Style sheet:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="ArbuckleAppTheme" parent="#android:style/Theme.Holo.Light">
<item name="android:actionBarStyle">#style/ActionBarStyle</item>
</style>
<style name="ActionBarStyle" parent="#android:style/Widget.Holo.Light.ActionBar">
<item name="android:background">#color/handler_noorder_startcolor</item>
<item name="android:textColor">#color/handle_noorder_textcolor</item>
</style>
</resources>
The thing is one of my buttons (inside a sliding drawer) becomes much bigger. I tried changing layout values, etc. but to now avail.
Here is the xml surrounding the button:
<Button
android:id="#+id/bCancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:text="Cancel"
android:background="#drawable/cancel_singleitem_background"
android:textSize="12dp"
android:padding="5dp"
android:layout_marginLeft="2dp"
android:layout_marginRight="2dp"/>
There is an identical button in the main part of my app - which doesn't change shape.
I want to figure out why this one button's shape is getting completely screwed up. Happy to add more code if needed - thought I would start with immediate code first.

I figured it out!
You can remove the parent attribute from the application theme, and this removes the imposition of holo.light formatting across the entire app.
So the code is now:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="ArbuckleAppTheme" >
<item name="android:actionBarStyle">#style/ActionBarStyle</item>
</style>
<style name="ActionBarStyle" parent="#android:style/Widget.Holo.Light.ActionBar">
<item name="android:background">#color/handler_noorder_startcolor</item>
<item name="android:textColor">#color/handle_noorder_textcolor</item>
</style>
</resources>
By the way, the imposition I'm talking about (button becoming bigger) is because Google is trying to impose minimum standards on app development - and that includes buttons that are min. 48px.
I learned a lot from this - hope this is news to some of you so I can give back.