Develop Reference

How to fix programmatically round corners buttons on android?

I am going to want to rounded corners on button like this below code
button.setWidth(buttonWidth);
button.setHeight(buttonHeight);
How to define rounded buttons with java code, no xml

Use the Material Components for Android.
Just add the dependency:
implementation ‘com.google.android.material:material:1.0.0’
Add the MaterialButton in your layout:
<com.google.android.material.button.MaterialButton
....
style="#style/Widget.MaterialComponents.Button.OutlinedButton"
app:cornerRadius=".."
app:strokeColor="#color/colorPrimary"/>
and use the method setCornerRadius.
Something like:
button.setCornerRadius(..);

You'd make an xml drawable with the rounded rect background you want (make sure to use a state list drawable if you want it to hilight when pressed) and set it as the background. Setting it as the background is just a setBackgroundDrawable call.

Just set your theme to MaterialComponents. Note that this will mess up your current theme though.
https://learntodroid.com/how-to-create-rounded-corners-for-a-button-in-android/ may be another option.

First create a background:
<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>
and then:
button.setBackground(ContextCompat.getDrawable(context, R.drawable.ready));
this answer is based on this and this link.

Custom background of button is not setting properly

Hello I am designing this page in android (style only)
.
First 3 buttons has been designed by taking the reference from this.
But DONATE NOW button which I have designed is become transparent like this
as well as click event (statepreseed = "true")is also transparent like
.
and here is my code of background for DONATE NOW button
<?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="0dp" />
<solid android:color="#33e7d283"></solid>
<padding
android:left="0dp"
android:top="0dp"
android:right="0dp"
android:bottom="0dp"
/>
<stroke
android:width="4dp"
android:color="#00e9ca30"
/>
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<corners
android:radius="0dp"
/>
<gradient
android:angle="225"
android:centerX="23%"
android:centerColor="#33f4c40e"
android:startColor="#ffdab605"
android:endColor="#ffdab605"
android:type="linear"
/>
<padding
android:left="0dp"
android:top="0dp"
android:right="0dp"
android:bottom="0dp"
/>
</shape>
</item>
</selector>
If any one is having the solution.please help

You are using ARGB instead of RGB. Because of this you are creating image with transparent background.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="0dp" />
<gradient
android:angle="225"
android:centerColor="#e7d283"
android:centerX="23%"
android:endColor="#ffdab605"
android:startColor="#ffdab605"
android:type="linear" />
<padding
android:bottom="0dp"
android:left="0dp"
android:right="0dp"
android:top="0dp" />
</shape>
Using e7d283 or ffe7d283 color-code instead of 33e7d283 might solve your problem for yellow image background.
Using 33 as alpha means you are giving only 20% opacity to your center color. That is the reason you can see background color in middle of your image.

Here you go..
Your button element should look like below.
<Button
android:id="#+id/angry_btn"
android:text="Button"
android:textColor="#FFFFFF"
android:textSize="30sp"
android:layout_width="270dp"
android:layout_height="60dp"
android:background="#drawable/buttonshape"
android:shadowColor="#474747"
android:shadowDx="0"
android:shadowDy="0"
android:shadowRadius="3"
/>
ButtonShape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<corners
android:radius="14dp"
/>
<gradient
android:angle="45"
android:centerX="65%"
android:centerColor="#F5FAF9"
android:startColor="#F39C12"
android:endColor="##F39C12"
android:type="linear"
/>
<size
android:width="270dp"
android:height="60dp"
/>
<stroke
android:width="3dp"
android:color="#878787"
/>
</shape>
Output will look like below.

Change shape on an inflated View - Android

I have the following shapes :
1)quizgeneralanswershape.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<corners android:radius="100dp"/>
<gradient
android:angle="45"
android:centerX="35%"
android:startColor="#E8E8E8"
android:centerColor="#7995A8"
android:endColor="#000000"
android:type="linear"
/>
<padding
android:left="0dp"
android:top="0dp"
android:right="0dp"
android:bottom="0dp"
/>
<size
android:width="270dp"
android:height="60dp"
/>
<stroke
android:width="3dp"
android:color="#878787"
/>
2)quizrightanswer.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<corners android:radius="100dp"/>
<gradient
android:angle="45"
android:centerX="35%"
android:startColor="#00FF80"
android:centerColor="#66FFB2"
android:endColor="#000000"
android:type="linear"
/>
<padding
android:left="0dp"
android:top="0dp"
android:right="0dp"
android:bottom="0dp"
/>
<size
android:width="270dp"
android:height="60dp"
/>
<stroke
android:width="3dp"
android:color="#878787"
/>
there are also 2 more xml files in layout folder that I have created in order to describe my wanted layout using the shape I want. Here is one: quizrightanswer.xml:
<Button xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/quizButton"
android:text="Button"
android:textColor="#FFFFFF"
android:textSize="13sp"
android:layout_width="270dp"
android:layout_height="60dp"
android:background="#drawable/quizrightanswershape"
android:clickable="true"
/>
I have no problem inflating one specific shape and use it. However, i wanted to know if there is any way to give a new shape to a already existed object. To be more clear, I want on the OnClick event to change the shape of my button. Here is some code of my activity that works fine:
quizTableLayout = (TableLayout) findViewById(R.id.quizTableLayout);
view = LayoutInflater.from(this).inflate(R.layout.quizquestion, null);//works fine
I want in the view object to give a quizrightanswershape shape on click. How is this possible? A solution I thinked of is deleting old shape and inflate new one with using specific parameters of my old view (like text), but I think that's not right and not fast at all.

It's pretty easy. You're setting the general shape as the background to the button right? Yeah so, use findViewById to find your button in your layout and then attach an OnClickListener, in which you will use setBackground or setBackgroundDrawable to the button to change the background shape.

why you are not change background of your button simply?
in easy way you can change it like this:
mButton.setBackground(getResources().getDrawable(R.drawable.yourShape));
if you want button shape change if user click on it and if not press again have old shape so
you can use shape like this:
<selector
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" >
<item android:state_pressed="true" android:state_focused="true">
<shape>
<gradient
android:startColor="#f00"
android:endColor="#f00"
android:angle="270"/>
<stroke
android:width="2dp"
android:color="#eee"/>
<corners
android:radius="3dp" />
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#ccc"
android:endColor="#ccc"
android:angle="270"/>
<stroke
android:width="2dp"
android:color="#ccc"/>
<corners
android:radius="3dp" />
</shape>
</item>
</selector>

How to draw border on just one side of a linear layout?

I'm able to draw border to a linear layout, but it is getting drawn on all sides. I want to restrict it to right side only, like you do in CSS (border-right:1px solid red;).
I've tried this, but it still draws on all sides:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<stroke
android:height="2dp"
android:width="2dp"
android:color="#FF0000" />
<solid android:color="#000000" />
<padding
android:bottom="0dp"
android:left="0dp"
android:right="1dp"
android:top="0dp" />
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="5dp"
android:radius="1dp"
android:topLeftRadius="5dp"
android:topRightRadius="0dp" />
</shape>
</item>
Any suggestions on how to accomplish this?
BTW, I do not want to use the hack of putting a view of width 1dp on the required side.

You can use this to get border on one side
<?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="#FF0000" />
</shape>
</item>
<item android:left="5dp">
<shape android:shape="rectangle">
<solid android:color="#000000" />
</shape>
</item>
</layer-list>
EDITED
As many including me wanted to have a one side border with transparent background, I have implemented a BorderDrawable which could give me borders with different size and color in the same way as we use css. But this could not be used via xml. For supporting XML, I have added a BorderFrameLayout in which your layout can be wrapped.
See my github for the complete source.

Easy as pie, allowing a transparent bg:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:angle="0"
android:startColor="#f00"
android:centerColor="#android:color/transparent"
android:centerX="0.01" />
</shape>
Change the angle to change border location:
0 = left
90 = bottom
180 = right
270 = top

it is also possible to implement what you want using a single layer
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:bottom="-5dp"
android:right="-5dp"
android:top="-5dp">
<shape android:shape="rectangle" >
<solid android:color="#color/color_of_the_background" />
<stroke
android:width="5dp"
android:color="#color/color_of_the_border" />
</shape>
</item>
</layer-list>
this way only left border is visible but you can achieve any combination you want by playing with bottom, left, right and top attributes of the item element

To get a border on just one side of a drawable, apply a negative inset to the other 3 sides (causing those borders to be drawn off-screen).
<?xml version="1.0" encoding="utf-8"?>
<inset xmlns:android="http://schemas.android.com/apk/res/android"
android:insetTop="-2dp"
android:insetBottom="-2dp"
android:insetLeft="-2dp">
<shape android:shape="rectangle">
<stroke android:width="2dp" android:color="#FF0000" />
<solid android:color="#000000" />
</shape>
</inset>
This approach is similar to naykah's answer, but without the use of a layer-list.

An other great example
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<inset xmlns:android="http://schemas.android.com/apk/res/android"
android:insetRight="-2dp">
<shape android:shape="rectangle">
<corners
android:bottomLeftRadius="4dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="4dp"
android:topRightRadius="0dp" />
<stroke
android:width="1dp"
android:color="#70b23f" />
<solid android:color="#android:color/transparent" />
</shape>
</inset>

As an alternative (if you don't want to use background), you can easily do it by making a view as follows:
<View
android:layout_width="2dp"
android:layout_height="match_parent"
android:background="#000000" />
For having a right border only, place this after the layout (where you want to have the border):
<View
android:layout_width="2dp"
android:layout_height="match_parent"
android:background="#000000" />
For having a left border only, place this before the layout (where you want to have the border):
Worked for me...Hope its of some help....

I was able to achieve the effect with the following code
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:left="0dp" android:right="-5dp" android:top="-5dp" android:bottom="-5dp">
<shape
android:shape="rectangle">
<stroke android:width="1dp" android:color="#123456" />
</shape>
</item>
</layer-list>
You can adjust to your needs for border position by changing the direction of displacement

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
<shape>
<solid
android:color="#f28b24" />
<stroke
android:width="1dp"
android:color="#f28b24" />
<corners
android:radius="0dp"/>
<padding
android:left="0dp"
android:top="0dp"
android:right="0dp"
android:bottom="0dp" />
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#f28b24"
android:endColor="#f28b24"
android:angle="270" />
<stroke
android:width="0dp"
android:color="#f28b24" />
<corners
android:bottomLeftRadius="8dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="0dp"
android:topRightRadius="0dp"/>
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
</selector>

There is no mention about nine-patch files here. Yes, you have to create the file, however it's quite easy job and it's really "cross-version and transparency supporting" solution. If the file is placed to the drawable-nodpi directory, it works px based, and in the drawable-mdpi works approximately as dp base (thanks to resample).
Example file for the original question (border-right:1px solid red;) is here:
http://ge.tt/517ZIFC2/v/3?c
Just place it to the drawable-nodpi directory.

Borders of different colors. I used 3 items.
<?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="#color/colorAccent" />
</shape>
</item>
<item android:top="3dp">
<shape android:shape="rectangle">
<solid android:color="#color/light_grey" />
</shape>
</item>
<item
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="3dp">
<shape android:shape="rectangle">
<solid android:color="#color/colorPrimary" />
</shape>
</item>
</layer-list>

You can wrap into container and define margins for start left bottom top.
Suppose you want to provide margin for left side you can do this
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/light_blue"
>
<TextView
android:marginStart="2dp" // This is Your border
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/white"
android:padding="16dp"
android:text="a"
android:textColor="#color/light_blue"
android:textSize="25dp" />
</RelativeLayout>

Custom Buttons in Android: How to get border/edge/frame when I read the background from xml?

Using Android Shapes in xml I have defined a gradient which I use as the background for a button.
This all works nice, but there's no edge surrounding the button. I would like it to look similar to the normal Android button but I need more flexibility to control the color and look.
The shape is defined as follows:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient android:startColor="#FFFFFF"
android:endColor="#00FF00"
android:angle="270" />
<corners android:radius="3dp" />
<stroke android:width="5px" color="#000000" />
</shape>
I would expect the border to be set in the xml. Why doesn't "stroke" fix it? Stroke doesn't seem to do anything.
I checked the Android Developer spec, but couldn't find the answer there:
http://developer.android.com/guide/topics/resources/drawable-resource.html
I have also looked through all the properties of the Android Button, but as expected there's no such parameter, probably since it's built into the normal Android button. Btw, I checked ImageButton properties too.
Can someone please help?
I know there's the alternative to make an image with proper edges and use an ImageButton, but there really should be a way to fix this programmatically.
Thanks!
Anna

I had this problem a while ago. While I don't quite remember why I made each decision, the way I solved it was to use a a shape layer-list. This lets you stack one shape on top of another. For example, the following XML creates a shape with a solid black outline 2px wide, with a 'grey to white to grey' gradient across the middle:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<padding android:left="1dp"
android:top="1dp"
android:right="1dp"
android:bottom="1dp"/>
<solid android:color="#FF000000"/>
<corners android:radius="3dp"/>
</shape>
</item>
<item>
<shape>
<padding android:left="2dp"
android:top="2dp"
android:right="2dp"
android:bottom="2dp"/>
<gradient android:startColor="#FFB0B0B0"
android:centerColor="#FFFFFFFF"
android:endColor="#FFB0B0B0"
android:angle="315"/>
</shape>
</item>
</layer-list>
If you want to be able to change that color dynamically at runtime, then things get a lot messier. Again, the details of why I had to do things a certain way are hazy, but I ended up having to create a custom view class which contained a custom ShapeDrawable. I started off looking at the examples from the ApiDemos app which comes with the SDK - it's a very good resource.
EDIT: Another reason your stroke might not be appearing is that you forgot the android: before the color="...." bit.

I've had the same problem, what i observed is stroke is not applying to button as border at design time but at run time i see the border.
I jst used the following same code
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<solid android:color="#color/black" />
<stroke android:width="1px" android:color="#color/red" />
</shape>
as steve hanley said abvoe you miss the android: for the color attribute.
Hope this helps somebody....

Probably much to late, but you have to add an extra ff before the color.
<stroke android:width="5px" color="#ff000000" />
Greets

Use ImageButton
<ImageButton
android:layout_width="40dp"
android:layout_height="30dp"
android:src="#drawable/left_arrow"
android:background="#drawable/button_selector"
android:gravity="center"/>
Use drawable selector to ImageButton and define your properties
<item android:state_pressed="true" >
<shape>
<gradient
android:startColor="#color/startColor"
android:endColor="#color/endColor"
android:angle="270" />
<stroke
android:width="0.5dp"
android:color="#color/borderColor" />
<corners
android:topLeftRadius="5dp"
android:bottomRightRadius="5dp"/>
</shape>
</item>
<item android:state_focused="true" >
<shape>
<gradient
android:startColor="#color/startColor"
android:endColor="#color/endColor"
android:angle="270" />
<stroke
android:width="0.5dp"
android:color="#color/borderColor" />
<corners
android:topLeftRadius="5dp"
android:bottomRightRadius="5dp"/>
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#color/startColor"
android:endColor="#color/endColor"
android:angle="270" />
<stroke
android:width="0.5dp"
android:color="#color/borderColor" />
<corners
android:topLeftRadius="5dp"
android:bottomRightRadius="5dp"/>
</shape>
</item>

<item android:state_enabled="false" android:drawable="#drawable/button_disabled" />
<item android:state_focused="true" android:drawable="#drawable/button_highlighted"/>
<item android:state_pressed="true" android:drawable="#drawable/button_highlighted"/>
<item>
<shape>
<gradient android:startColor="#fdfdfd" android:endColor="#f0f0f0" android:angle="270" />
<stroke android:width="1dp" android:color="#56390a" />
<corners android:radius="3dp" />
<padding android:left="10dp" android:top="10dp" android:right="10dp" android:bottom="10dp" />
</shape>
</item>
Adding stroke color #56390a will solve the problem.