Develop Reference

Android - Draw a ribbon shape

I am trying not to use image view. This is because, later, I will generate many objects with the same shape but different colors, so I wouldn't need to keep adding image views but simply adding colors on my code.
How can I create those images on Android Studio? I looked over Paint, onDraw, Canvas, etc, but this looks difficult to me.

If you want to use from XML , Try this way it will work
<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle">
<size
android:width="100dp"
android:height="40dp" />
<solid android:color="#5EB888" />
<corners android:radius="0dp"/>
</shape>
</item>
<item
android:top="-26dp"
android:bottom="31dp"
android:left="-90dp"
android:right="75dp">
<rotate
android:fromDegrees="45">
<shape android:shape="rectangle">
<solid android:color="#ffffff" />
</shape>
</rotate>
</item>
</layer-list>
OUTPUT

You can create vector image using any vector program like Adobe Illustrator or convert it using a conversion tool like vectormagic or find already existing one then import it to android studio.
it will be imported as xml file where you can change the colors as you want

Create a drawable file as named left_arrow.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<rotate
android:fromDegrees="45"
android:toDegrees="90"
android:pivotX="0%"
android:pivotY="1%" >
<shape android:shape="rectangle" >
<stroke
android:width="10dp"
android:color="#00000000" />
<solid android:color="#ffffff" />
</shape>
</rotate>
</item>
Now, create a view layout to create this type of stripes or image like this, here is the below code:-
<?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:orientation="vertical">
<LinearLayout
android:id="#+id/llMain"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
android:background="#color/black"
android:orientation="horizontal">
<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.1"
android:background="#drawable/left_arrow"
android:contentDescription="#string/app_name" />
<ImageView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.9"
android:contentDescription="#string/app_name" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9" />
This above layout creates the required arrow stripe as a layout.
Now add this layout to your required layout where you wan't to show this stripes. For example,
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="#+id/llMain"
layout="#layout/xtra"/>
</LinearLayout>
Now, you are able to also use OnClickListener by using "llMain".
Hope it will help.

You could use the white png image you already have and use the setColorFilter method on the image view class to tint it with any color you desire

How to make a circular Button?

I'm a new to Android Development. While working on Android Studio 2.2, I tried to create a circular Button. As read from here, I tried to create a new Drawable Resource File. But I was unable to change Root Element to Shape. There was no such options. Could anyone help?

There are two solutions.
Floating Action Button: https://developer.android.com/reference/android/support/design/widget/FloatingActionButton.html
else:
You create a oval shape in xml.
and put that shape as background on button and make sure button have equal layout_height and layout_width.
Example:
oval_shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:dither="true"
android:shape="oval">
<solid android:color="#color/colorAccent"/>
</shape>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<Button
android:layout_width="60dp"
android:layout_height="60dp"
android:background="#drawable/oval_shape"/>
</FrameLayout>

No option is needed here. Just use <shape>.
Check this example:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#color/colorPrimary" />
<corners android:radius="#dimen/btn_radius" />
</shape>

Use xml drawable like this:
Save the following contents as round_button.xml in drawable folder
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="false">
<shape android:shape="oval">
<solid android:color="#fa09ad"/>
</shape>
</item>
<item android:state_pressed="true">
<shape android:shape="oval">
<solid android:color="#c20586"/>
</shape>
</item>
And set it as background of Button in xml like this:
<Button
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/round_button"
android:gravity="center_vertical|center_horizontal"
android:text="hello"
android:textColor="#fff" />

You are probably looking for the FloatingActionButton
It is available in the support-library.
The documation of the class.

Multi color Stroke image with XML

Does it possible to create multi-color stroke with the help of XML? I want to create exact view attached here.
Thanks

You could use a trick by creating a drawable shape with gradient and make it a parent's background... something like this:
gradient_stroke.xml (in res/drawable):
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle" >
<gradient
android:angle="180"
android:startColor="#fff96200"
android:centerColor="#fffff60f"
android:endColor="#fff96200"
android:centerX="50%"
>
</gradient>
<corners android:radius="5dp"></corners>
</shape>
</item>
your_view.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:padding="2dp"
android:background="#drawable/gradient_stroke"
android:layout_height="wrap_content">
<Button android:text="Submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/green"
android:id="#+id/button"/>
</LinearLayout>
Just an idea - play around with it to get desired values...

android XML change gradient color

i need to change android:color in XML file in run-time
i use it for an image button source
<ImageButton
android:layout_width="#dimen/large_brush"
android:layout_height="#dimen/large_brush"
android:background="#android:color/transparent"
android:contentDescription="#string/paint"
android:src="#drawable/paint"/>
my XML paint file looks like this
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval" >
<stroke
android:width="1dp"
android:color="#android:color/holo_purple" />
<gradient
android:startColor="#android:color/holo_purple"
android:endColor="#android:color/holo_purple" />
<corners android:radius="10dp" />
</shape>
</item>
</layer-list>
i tried DOM parser but after getting to gradient it shows that there are no more nodes

Try like this way. Hope it should helpful for you. Thanks
Create a new xml file and put it in drawable and then add it to button as background
gradient.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<!-- Gradient Bg for listrow -->
<gradient
android:startColor="#f1f1f2"
android:centerColor="#e7e7e8"
android:endColor="#cfcfcf"
android:angle="270" />
</shape>
layout.xml
<Button
android:id="#+id/Button1"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/gradient"
android:text="Button Text" >

You have the background set to transparent, the button will never have a background. Set it to you XML drawabale resource instead.

Android TextView Background

i have a design which demands a background like the image below for the number on the right hand side. Is there any we can achieve this in Android ?
Will i need to make a 9 patch image and set it as a background ?

First, create a shape to have rounded corners.
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#FFFFFF"/>
<corners android:radius="5px"/>
<padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" />
</shape>
Then apply this as the background to your Views:
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/rounded_edges">
<TextView
android:id="#+id/mytext"
android:layout_width="200dip"
android:layout_height="wrap_content"
android:text="blah blah blah blah"
android:padding="6dip"
android:textColor="#000000" />
</LinearLayout>
You may need to do some tweaking. You may even be able to discard the LinearLayout and set the android:background of the TextView to #drawable/rounded_edges

First create a drawable resource.
<?xml version="1.0" encoding="utf-8"?>
<!-- res/drawable/rounded_textview.xml -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<solid android:color="#cccccc"/>
<corners
android:bottomRightRadius="15dp"
android:bottomLeftRadius="15dp"
android:topLeftRadius="15dp"
android:topRightRadius="15dp"/>
</shape>
Then reference this drawable in your layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:gravity="center"
android:background="#drawable/rounded_textview" />
</LinearLayout>
One of the good Reference :
TextView with rounded corners
Thanks.

I know this is an old question but for anyone who struggles with this, I strongly recommend ViewBadger library