Develop Reference

Background drawable not applying to button

I am trying to create a capsule/pill shaped button in XML. I have defined a drawable and set it as the background of my button, but in the preview, and when I run the app, it's displaying as a blue rectangle, despite the background drawable being a white oval. Does anyone know why that might be happening?
Here's the button:
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/search_box"
android:layout_centerHorizontal="true"
android:layout_marginTop="24dp"
android:background="#drawable/button_capsule"
android:text="#string/search"
android:textColor="#color/precipLightBlue"/>
And here's the background drawable:
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="1000dp" />
<solid android:color="#android:color/white" />
</shape>

To have a capsule/pill shaped button you can use the MaterialButton in the official Material Component library using the app:cornerRadius attribute.
<com.google.android.material.button.MaterialButton
android:layout_width="100dp"
app:cornerRadius="32dp"
..../>
With the version 1.1.0 you can also customize the shape of your component using the app:shapeAppearanceOverlay attribute
<com.google.android.material.button.MaterialButton
....
app:shapeAppearanceOverlay="#style/ShapeAppearanceOverlay.ButtonRounded"
.../>
In the style define:
<style name="ShapeAppearanceOverlay.ButtonRounded" parent="">
<item name="cornerFamily">rounded</item>
<item name="cornerSize">32dp</item>
</style>
You can also try to use the ExtendedFloatingActionButton:
<com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
android:id="#+id/exfab"
android:layout_width="wrap_content"
.... />

You put a shape that you didn't defined. To define an oval you should put the shape="oval" option in the tag. Although i think you want a rectangle with rounded corners as i see in your code.
Also 1000dp radius is a lot, maybe that's making an issue.
Define size too. Because that shape doesn't have any size and may not appear as you are using wrap_content in the button definition
Try this:
<corners android:radius="30dp" />
<solid android:color="#android:color/white" />
<size
android:width="200dp"
android:height="50dp"/>
If you want an oval remove the corners tag and add android:shape="oval" as property of shape tag

Here is the code regarding button drawable background.
Xml code
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center|top"
android:background="#color/colorLightPurple">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="24dp"
android:background="#drawable/button_bg"
android:text="Search"
android:textColor="#color/colorBlue"/>
</LinearLayout>
For button background , please add same drawable file

seems like you're doing everything right. Just a small addition, try adding android:shape="rectangle" in the shape tag.
This is what button_capsule.xml should look like.
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="1000dp" />
<solid android:color="#android:color/white" />
</shape>
Hope this works. All the best.

In Material design version 1.2.0 they have fixed this issue and added a property for setting background for Material Button
here is the dependency for the latest version
com.google.android.material:material:1.2.0
and also if u want to remove the space between the drawable top and bottom so that the drawable get the whole width and height use these 2 properties
android:insetTop="0dp"
android:insetBottom="0dp"
if want to explore more about the properties u can refer to the release of library and can check all the properties.
https://github.com/material-components/material-components-android/releases/tag/1.2.0

use this.
<androidx.appcompat.widget.AppCompatButton
.....
/>

Align TextView and EditText left in vertically oriented LinearLayout

I am using a LinearLayout as view group which holds two children (TextView and EditText). My XML code looks as follows:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text View"
android:textSize="20sp" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Edit Text"
android:textSize="20sp" />
</LinearLayout>
which will produce the following design:
As depicted in the zoomed-in view on the left, TextViewand EditText are not equally aligned vertically (EditText is indented a bit more as shown by the small red arrows).
It seems there is a bit of a padding (a few dp) around the hint and the line underneath which prevents them from "touching" the left edge of their view field. Is there any way to force the hint within EditText to squeeze to the left of its view field?
How can I get rid of this indentation, other than by adding paddings and margins?
Thanks for any ideas and advice!

Without add any paddings and margins you can use a custom drawable for the background of your Edittext to remove the default padding
in drawable/edittext_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#android:color/transparent" />
</shape>
</item>
<item
android:top="-2dp"
android:right="-2dp"
android:left="-2dp">
<shape>
<solid android:color="#android:color/transparent" />
<stroke
android:width="1dp"
android:color="#000000" />
</shape>
</item>
</layer-list>
Now use it in your editext:
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/edittext_bg"
android:hint="Edit Text"
android:textSize="20sp" />
Output:

It should not be in this way... You should check your style.xml, maybe you set additional margins there.
Also, try to specify layout_gravity:"left" attribute.

try typing letters on Edit Text then you can see both textview and edit text was aligned equally

Did you try Constraint layout? It's removing the need to have so much hierarchy in xml layouts and is easy to use.

this preview, run the simulator for correct preview.
But, for best result use https://developer.android.com/reference/android/support/design/widget/TextInputLayout.html

DrawableLeft in center with text

I can't center my drawableLeft icon.
I can easily put icon on the left of text, but if I set gravity to center, then only text is centered, but no icon.
<Button
android:id="#+id/patient_list_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/patientList"
android:drawableLeft="#drawable/ic_icon_two_heads"
android:layout_marginBottom="15dp"
style="#style/darkBlueButtonWithImage"/>
This is what I want:
This is what I have:
<style name="darkBlueButtonWithImage">
<item name="android:drawablePadding">10dp</item>
<item name="android:textColor">#color/white</item>
<item name="android:paddingLeft">10dp</item>
<item name="android:background">#drawable/radius_dark_blue_button</item>
<item name="android:gravity">center_vertical|left</item>
<item name="android:drawableTint">#color/white</item> <!-- has to be set in activity.java -->
</style>
How can I achieve this?

Finally, after all these years, we have possibility to achieve such behavior in simple and intuitive way.
All you have to do is use MaterialButton from Google Material library. Then use style with icon. After that you can use app:iconGravity property and set it to textStart
<com.google.android.material.button.MaterialButton
style="#style/Widget.MaterialComponents.Button.Icon"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Some text"
app:iconGravity="textStart"
app:icon="#drawable/some_icon" />

The easiest solution IMO:
yourButtonView.text = SpannableString(" ${getString(R.string.your_string)}").apply {
setSpan(
ImageSpan(requireContext(), R.drawable.your_icon),
0,
1,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
)
}
Is a bit hacky? Maybe. Does it work with every button (MaterialButton, AppCompatButton, Button, etc)? It does.
I prefer this rather than going with all the hassle of creating a custom view or something like that.

After giving Google's approach a try over 9000 times, I almost always ended up using a ViewGroup to put both side by side, particularly a RelativeLayout or LinearLayout and then adding an ImageView and a TextView. It's lame, but drawableStart/End have so many missing features that you'll waste a lot of time before you realize "you can't do it".
Alignments, tinting, Vectors, etc. All those things are harder or impossible with the "built in" drawable.

Using Button attributes android:drawableLeft and android:drawablePadding you won't be able to get your expected result. You can create a custom button using RelativeLayout or LinearLayout, TextView and ImageView. Use <selector> to define your button state(normal/pressed) behavior.
Here is an working example. Try this:
<!--- Custom Button -->
<RelativeLayout
android:id="#+id/patient_list_button"
android:layout_width="match_parent"
android:layout_height="48dp"
android:clickable="true"
android:background="#drawable/custom_button_selector">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_centerInParent="true"
android:gravity="center_vertical">
<ImageView
android:layout_width="24dp"
android:layout_height="24dp"
android:src="#drawable/icon_refresh"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:textSize="16dp"
android:text="CUSTOM BUTTON"
android:textStyle="bold"
android:textColor="#FFFFFF"/>
</LinearLayout>
</RelativeLayout>
custom_button_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_pressed="true"
android:state_enabled="true"
android:drawable="#drawable/bg_custom_button_pressed" />
<item
android:state_focused="true"
android:state_enabled="true"
android:drawable="#drawable/bg_custom_button_pressed" />
<item
android:state_enabled="true"
android:drawable="#drawable/bg_custom_button_normal" />
</selector>
bg_custom_button_normal.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<!-- view background color -->
<solid
android:color="#01A1DD" >
</solid>
<!-- Here is the corner radius -->
<corners android:radius="8dp" >
</corners>
</shape>
bg_custom_button_pressed.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<!-- view background color -->
<solid
android:color="#303F9F">
</solid>
<!-- Here is the corner radius -->
<corners android:radius="8dp" >
</corners>
</shape>
OUTPUT:
Hope this will help~

a) Increase "paddingLeft" value and shrink or remove "drawablePadding" in your case, adjust the value to a proper one; for example:
android:paddingLeft="50dp"
android:gravity="center_vertical|left"
b) Use a custom view.

A bit hacky solution:
<TextView
android:id="#+id/tv_whatsapp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="#id/tv_call"
app:layout_constraintTop_toBottomOf="#id/tv_completed_message_desc"
android:layout_width="0dp"
android:layout_height="40dp"
android:textStyle="normal"
android:layout_marginTop="#dimen/rs_dp_13"
android:layout_marginRight="#dimen/rs_dp_12"
android:background="#drawable/rs_dark_teal_rectangle_bg"
android:textSize="14sp"
android:textColor="#color/dark_teal"
**android:paddingHorizontal="38dp"**
android:includeFontPadding="false"
**android:drawableStart="#drawable/rs_user_journey_whatsapp_icon"**
**android:drawableLeft="#drawable/rs_user_journey_whatsapp_icon"**
android:visibility="visible"
android:letterSpacing="0.04"
app:layout_constraintHorizontal_chainStyle="packed"
**android:gravity="center_vertical|end"**
android:text="Whatsapp"/>
Setting horizontal padding along with gravity as center_vertical|end will achieve the required behaviour. You can increase/decrease the padding as per requirement.

Add bottom border line to the edit text widget

I want to add a bottom border line to the edit text widget like in a material design, but i cant find way to do it.
Thanks for helpers
EDIT:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#ffffff" />
<stroke android:width="1dip" android:color="#000000" />
</shape>

Get a 9patch image This site might help you produce them and apply it as the background resource for your edit text
android:background="#drawable/9patchname"
Alternatively you can fake it with a separate view below the edit text
<style name="divider">
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">1dp</item>
<item name="android:background">#color/grey</item>
</style>
<View style="#style/divider" />

android:id="#+id/edt_password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginTop="10dp"
android:singleLine="true"
android:background="#drawable/input_text_bg"
android:gravity="bottom"
android:hint="#string/hint_password"
android:inputType="textPassword"
android:paddingBottom="3dp"
android:paddingLeft="5dp" />

Android button background color

I am trying to set the background color of a button in my app and I am unable to achieve the result that I want...
The color that I am trying to set is holo_green_light(#ff99cc00). In order to do it, I am using setColorFilter(0xff99cc00, PorterDuff.Mode.MULTIPLY);
The color that I get is not the holo_green_light but a mix of lightgrey and holo_green_light.
I have tried using the LightingColorFilter without much success.
Is there a way to do it programatically, so that the button appears like a button and not a flat rectangle with the color that I need.

If you want to keep the general styling (rounded corners etc.) and just change the background color then I use the backgroundTint property
android:backgroundTint="#android:color/holo_green_light"

This is my way to do custom Button with a different color:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke android:width="3dp"
android:color="#80FFFFFF" />
<corners android:radius="25dp" />
<gradient android:angle="270"
android:centerColor="#90150517"
android:endColor="#90150517"
android:startColor="#90150517" />
</shape>
This way you set as background:
<Button android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
android:layout_marginBottom="25dp"
android:layout_centerInParent="true"
android:background="#drawable/button" />

If you don't mind hardcoding it you can do this ~> android:background="#eeeeee" and drop any hex color # you wish.
Looks like this....
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/textView1"
android:text="#string/ClickMe"
android:background="#fff"/>

Create /res/drawable/button.xml with the following content :
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<!-- you can use any color you want I used here gray color-->
<solid android:color="#90EE90"/>
<corners
android:bottomRightRadius="3dp"
android:bottomLeftRadius="3dp"
android:topLeftRadius="3dp"
android:topRightRadius="3dp"/>
</shape>
And then you can use the following :
<Button
android:id="#+id/button_save_prefs"
android:text="#string/save"
android:background="#drawable/button"/>

Just use a MaterialButton and the app:backgroundTint attribute:
<MaterialButton
app:backgroundTint="#color/my_color_selector"

Why not just use setBackgroundColor(getResources().getColor(R.color.holo_light_green))?
Edit: If you want to have something which looks more like an Android button you are going to want to create a gradient and set it as the background. For an example of this, you can check out this question.

No need to be that hardcore.
Try this :
YourButtonObject.setBackground(0xff99cc00);

Try this
<androidx.appcompat.widget.AppCompatButton
android:layout_width="wrap_content"
android:layout_height="34dp"
android:text="Check Out"
android:textAllCaps="true"
android:background="#54c2bc"
android:textColor="#FFFFFF"
android:textSize="9sp"/>

In order to keep the style, use:
int color = Color.parseColor("#99cc00");
button.getBackground().mutate().setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.SRC));

In addition to Mark Proctor's answer:
If you want to keep the default styling, but have a conditional coloring on the button, just set the backgroundTint property like so:
android:backgroundTint="#drawable/styles_mybutton"
Create the associated file /res/drawable/styles_mybutton.xml, then use the following template and change the colors as per your tastes:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Disabled state-->
<item android:state_enabled="false"
android:color="#android:color/white">
</item>
<!-- Default state-->
<item
android:color="#cfc">
</item>
</selector>

try this
app:backgroundTint="#color/colorGreen"

With version 1.2.0-alpha06 of material design library, now we can use android:background="..." on MaterialButton components:
<com.google.android.material.button.MaterialButton
android:background="#fff"
...
/>