How to Make the Corners of a Button Round

How to make the corners of a button round?

If you want something like this

here is the code.

1.Create a xml file in your drawable folder like mybutton.xml and paste the following markup:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:state_pressed="true" >
        <shape android:shape="rectangle"  >
            <corners android:radius="3dip" />
            <stroke android:width="1dip" android:color="#5e7974" />
            <gradient android:angle="-90" android:startColor="#345953" android:endColor="#689a92"  />            
        </shape>
    </item>
    <item android:state_focused="true">
        <shape android:shape="rectangle"  >
            <corners android:radius="3dip" />
            <stroke android:width="1dip" android:color="#5e7974" />
            <solid android:color="#58857e"/>       
        </shape>
    </item>  
    <item >
       <shape android:shape="rectangle"  >
            <corners android:radius="3dip" />
            <stroke android:width="1dip" android:color="#5e7974" />
            <gradient android:angle="-90" android:startColor="#8dbab3" android:endColor="#58857e" />            
       </shape>
    </item>
</selector>

2.Now use this drawable for the background of your view. If the view is button then something like this:

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="10dp"
    android:textColor="#ffffff"
    android:background="@drawable/mybutton"
    android:text="Buttons" />

Rounded corners on material button

Update:

Answer by Gabriele Mariotti below is now better.

Old answer:

You need to inherit that style.

Add into your styles.xml:

 <style name="AppTheme.RoundedCornerMaterialButton" parent="Widget.AppCompat.Button.Colored">
        <item name="android:background">@drawable/rounded_shape</item>
 </style>

Add file drawable/rounded_shape.xml:

<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle"   >

    <solid
        android:color="@color/colorAccent" >
    </solid>

    <corners
        android:radius="11dp"   >
    </corners>

</shape>

And finally in your layout:

 <Button
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="Test Text"
       style="@style/AppTheme.RoundedCornerMaterialButton"/>

Edit: updated answer to use theme's color rather than hardcoded one.

Create a rounded button / button with border-radius in Flutter

1. Solution Summary

FlatButton and RaisedButton are deprecated.

So, you can use shape which placed in the style property, for TextButton and ElevatedButton.

There are some changes since Flutter 2.0:

• style: the property type has changed to ButtonStyle
• shape: the property type has changed to MaterialStateProperty<T>

2. Rounded Button

Inside the style property exists the shape property:

style: ButtonStyle(
  shape: MaterialStateProperty.all<RoundedRectangleBorder>(
    RoundedRectangleBorder(
      borderRadius: BorderRadius.circular(18.0),
      side: BorderSide(color: Colors.red)
    )
  )
)

Square Button

For a square button you can use ElevatedButton or otherwise add:

style: ButtonStyle(
  shape: MaterialStateProperty.all<RoundedRectangleBorder>(
    RoundedRectangleBorder(
      borderRadius: BorderRadius.zero,
      side: BorderSide(color: Colors.red)
    )
  )
)

Complete Example

Row(
  mainAxisAlignment: MainAxisAlignment.end,
  children: [
    TextButton(
      child: Text(
        "Add to cart".toUpperCase(),
        style: TextStyle(fontSize: 14)
      ),
      style: ButtonStyle(
        padding: MaterialStateProperty.all<EdgeInsets>(EdgeInsets.all(15)),
        foregroundColor: MaterialStateProperty.all<Color>(Colors.red),
        shape: MaterialStateProperty.all<RoundedRectangleBorder>(
          RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(18.0),
            side: BorderSide(color: Colors.red)
          )
        )
      ),
      onPressed: () => null
    ),
    SizedBox(width: 10),
    ElevatedButton(
      child: Text(
        "Buy now".toUpperCase(),
        style: TextStyle(fontSize: 14)
      ),
      style: ButtonStyle(
        foregroundColor: MaterialStateProperty.all<Color>(Colors.white),
        backgroundColor: MaterialStateProperty.all<Color>(Colors.red),
        shape: MaterialStateProperty.all<RoundedRectangleBorder>(
          RoundedRectangleBorder(
            borderRadius: BorderRadius.zero,
            side: BorderSide(color: Colors.red)
          )
        )
      ),
      onPressed: () => null
    )
  ]
)

How to make a round button?

Create an xml file named roundedbutton.xml in drawable folder

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
android:shape="rectangle">
    <solid android:color="#eeffffff" />
    <corners android:bottomRightRadius="8dp"
        android:bottomLeftRadius="8dp"  
        android:topRightRadius="8dp"
        android:topLeftRadius="8dp"/>
</shape>

Finally set that as background to your Button as android:background = "@drawable/roundedbutton"

If you want to make it completely rounded, alter the radius and settle for something that is ok for you.

Rounded Button in Android

You can do a rounded corner button without resorting to an ImageView.

A background selector resource, button_background.xml:

<?xml version="1.0" encoding="utf-8" ?> 
     <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <!--  Non focused states 
      --> 
      <item android:state_focused="false" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/button_unfocused" /> 
      <item android:state_focused="false" android:state_selected="true" android:state_pressed="false" android:drawable="@drawable/button_unfocused" /> 
     <!--  Focused states 
      --> 
      <item android:state_focused="true" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/button_focus" /> 
      <item android:state_focused="true" android:state_selected="true" android:state_pressed="false" android:drawable="@drawable/button_focus" /> 
     <!--  Pressed 
      --> 
      <item android:state_pressed="true" android:drawable="@drawable/button_press" /> 
    </selector>

For each state, a drawable resource, e.g. button_press.xml:

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
  <stroke android:width="1dp" android:color="#FF404040" /> 
  <corners android:radius="6dp" /> 
  <gradient android:startColor="#FF6800" android:centerColor="#FF8000" android:endColor="#FF9700" android:angle="90" /> 
</shape>

Note the corners element, this gets you rounded corners!

Then set the background drawable on the button:

android:background="@drawable/button_background"

EDIT (9/2018): The same technique can be used to create a circular button. A circle is really just a square button with radius size set to 1/2 the side of the square

Additionally, in the example above the stroke and gradient aren't necessary elements, they are just examples and ways that you'll be able to see the rounded corner shape

Button with rounded corners and border with color

This one is what you need.

    public static void setRoundedDrawable(Context context, View view, int backgroundColor, int borderColor) {
    GradientDrawable shape = new GradientDrawable();
    shape.setShape(GradientDrawable.RECTANGLE);
    shape.setCornerRadius(20f);
    shape.setColor(backgroundColor);
    if (borderColor != 0){
        shape.setStroke(2f, borderColor);
    }
    view.setBackgroundDrawable(shape);
}

You can change corner radius and stroke width depends on what you need.
Hope it helps!

Googles new buttons - how to do rounded ends in CSS

I think you're in the right track, just set it as larger as it makes you safe thinking about maximum height of button/item/div/whatever. I've checked Google Drive button by inspecting it, its border-radius is set to be 66px.

Notice that I've set the 4 corners in the same border-radius property, 2 of them being 0 just like the example. The border-radius are defined in the following order: top-left, top-right, bottom-right, bottom-left.

.button {  padding: 10px 30px;  background: red;  border: none;  border-radius: 0 100px 100px 0;}  

<button class="button">Hello world</button>

<Button
    style="?android:attr/borderlessButtonStyle"
    android:id="@+id/buy_button"
    android:layout_width="0dp"
    android:layout_weight="1"
    android:layout_height="match_parent"
    android:gravity="center"
    android:background="@drawable/green_trading_button_effect"
    android:textColor="@android:color/white"
    android:text="BUY" />

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="@color/ripple_material_dark">

    <item android:id="@android:id/mask">
        <shape android:shape="rectangle">
            <solid android:color="@android:color/white" />
            <corners android:radius="5dp" />
        </shape>
    </item>

    <item android:drawable="@drawable/green_trading_button" />
</ripple>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:drawable="@drawable/green_trading_button_selected" />
    <item android:state_focused="true" android:drawable="@drawable/green_trading_button_selected" />
    <item android:state_selected="true" android:drawable="@drawable/green_trading_button_selected" />
    <item android:drawable="@drawable/green_trading_button" />
</selector>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid android:color="#ffa6c575"/>
    <!-- rounded corners -->
    <corners android:radius="5dp" />
</shape>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid android:color="#ffc5dca8"/>
    <!-- corners corners -->
    <corners android:radius="5dp" />
</shape>

<?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"
 android:layout_width="match_parent"
 android:layout_height="match_parent">

<ImageButton
    android:id="@+id/bottle"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:contentDescription="@null"
    app:srcCompat="@mipmap/ic_launcher"
    android:background="@drawable/rouncorners"/>

</android.support.constraint.ConstraintLayout>

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <stroke android:width="3dip" android:color="@color/profile_cover" />
    <corners android:radius="10dp" />
 </shape>

#import <QuartzCore/QuartzCore.h>

    yourButton.layer.cornerRadius = 10; // this value vary as per your desire
    yourButton.clipsToBounds = YES;