Develop Reference

Creating a circle in xml file is not actually a circle

I have a gradient view which animates from left to right. I have a XML that describes the circle inside, but the borders of XML are actually rectangular as you can see, how can I make the overflow hidden of the outside of the XML.
It looks like that only the background is a circle but not the the shape itself ,I thought that the solution is by using PorterDuff.Mode but it doesn't help.
this is my circle.xml file:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<stroke
android:width="2dp"
android:color="#android:color/white" />
<corners android:radius="7.5dp" />
<size android:width="327dp" android:height="211.5dp" />
</shape>
And in my layout i use it like this :
<RelativeLayout
android:id="#+id/white_rectangle"
android:layout_width="327dp"
android:layout_height="211.5dp"
android:layout_gravity="center"
android:clipChildren="true"
android:adjustViewBounds="true"
android:background="#drawable/circle"
>
<View
android:id="#+id/scanner"
android:layout_width="123.5dp"
android:layout_height="211.5dp"
android:layout_gravity="center"
android:background="#drawable/scanner"
android:visibility="gone" />
</RelativeLayout>
i don't want the scanner to go outside the borders

You need to set square dimensions for it to appear as a circle.
Your width is larger than your height. Try this
<RelativeLayout
android:id="#+id/white_rectangle"
android:layout_width="211.5dp"
android:layout_height="211.5dp"
android:layout_gravity="center"
android:clipChildren="true"
android:adjustViewBounds="true"
android:background="#drawable/circle"
>
<View
android:id="#+id/scanner"
android:layout_width="123.5dp"
android:layout_height="123.5dp"
android:layout_gravity="center"
android:background="#drawable/scanner"
android:visibility="gone" />
</RelativeLayout>

The solution for me was to use CardView and give it cardCornerRadius.
found it here How to make a view in android with rounded corners

try this library. Use same height and width for view
https://github.com/hdodenhof/CircleImageView

How to make initials icon like in Gmail?

What I want to do:
What I have:
I want to make a circular icon with initials in it. In my scenario initials can have one or two letters. Like you can see my solution work fine for two letters but not to one. How can I solve this for both cases?
There is my code from the XML file:
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:textSize="20dp"
android:textAllCaps="true"
android:textColor="#color/white"
android:background="#drawable/shape_rounded_blue_button"
android:layout_gravity="center_horizontal"
android:gravity="center"
local:MvxBind="Text Initials"/>
And there is shape_rounded_blue_button:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#color/blue"/>
<corners android:radius="30dp" />
</shape>

As I wanted to implement the same thing, I made some research on GitHub and found this library:
https://github.com/amulyakhare/TextDrawable
It does exactly what you want and has some neat features as auto-coloring. You can use it with an ImageView and create a drawable, e.g. like this:
val drawable = TextDrawable.builder()
.beginConfig()
.width(bubbleSize)
.height(bubbleSize)
.endConfig()
.buildRound("FH", MATERIAL.getColor("FH"))
theImageView.setImageDrawable(drawable)
And that looks like this:
Your text will automatically be centered within the bubble, so it's no problem to have one or two characters.

You need to create a drawable resource file under res>drawable and save it as bg_circle.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#424242"/>
<size android:width="120dp" android:height="120dp"/>
</shape>
Now make icon_container in your layout.xml file as:
<RelativeLayout
android:id="#+id/icon_container"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="#dimen/icon_width_height"
android:layout_height="#dimen/icon_width_height"
android:src="#drawable/bg_circle" />
<TextView
android:id="#+id/icon_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textColor="#android:color/white"
android:textSize="#dimen/icon_text" />
</RelativeLayout>
For complete code implementation visit Implementing Gmail like icon with text and random colors

You need to create a circle shape.
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#color/base30"/>
For better effects(shadow and appearance) you can use TextDrawable.

Ripple effect over the actual border

I have created a listview and added a border to it's items.
something like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="false"
android:orientation="horizontal"
android:background="#drawable/listviewborderbox"
android:padding="10dp" >
<LinearLayout
android:id="#+id/sharedbyyouNameLayout"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".70"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:id="#+id/sharedbyyoutext"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="left"
android:text="#string/sampletext1"
android:textColor="#color/blackText"
android:textSize="14sp" />
<TextView
android:id="#+id/sharedbyyouselected"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="left"
android:text="#string/sampletext2"
android:textColor="#color/blackText"
android:textSize="16sp"
tools:ignore="RtlHardcoded" />
</LinearLayout>
<LinearLayout
android:id="#+id/sharedbyyouLayoutforarrow"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".10"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_next"
tools:ignore="RtlSymmetry,RtlHardcoded,ContentDescription" />
</LinearLayout>
</LinearLayout>
And I have ripple effect value in Drawable-v21 like this:
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#android:color/white"> <item android:drawable="#color/footercolor"/> </ripple>
Border shape xml in drawable folder is this:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid android:color="#color/colorforbodybox" />
<corners android:radius="10dip"/>
<stroke android:width="2dip" android:color="#color/colorforborder" />
</shape>
Ripple effect works but ripple effect is shown outside the border line that I have drawn. Please check pic below:
How do I make the ripple effect not to cross the border in the list view?

To achieve rounded corner ripple effect change your ripple xml file to:
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:color="#android:color/white"
tools:targetApi="lollipop">
<item android:id="#android:id/mask">
<shape android:shape="rectangle">
<corners android:radius="10dp"/>
<solid android:color="#color/footercolor"/>
</shape>
</item>
</ripple>

The problem I had was that the corner radius of my views was not a fixed value therefore using the xml suggested didn't work for me.
I needed a something that would adapt the ripple effect every time regardless of the shape used so...
I used a simple view extension:
fun View.addRippleEffect(rippleColorId: Int = R.color.rippleColor) { // Here you can pass the color you want for the ripple effect and assign a "default" value
val rippleColor = ColorStateList.valueOf(ContextCompat.getColor(App.context(), rippleColorId))
this.background = RippleDrawable(
rippleColor, // This is the color of the effect and needs to be a ColorStateList
this.background, // ( = content ) With this you use your view's background as the content of the ripple effect
this.background) // ( = mask ) With this the ripple will take the shape of the background and not "spill over". (Could be null IF you did set the previous variable "content = this.background")
}
OR, if you want to separate the two layers:
fun View.addRippleEffect(rippleColorId: Int = R.color.rippleColor) {
val rippleColor = ColorStateList.valueOf(ContextCompat.getColor(App.context(), rippleColorId))
this.foreground = RippleDrawable( //Using the foreground allows you to give the view whatever background you need
rippleColor,
null, //Whatever shape you put here will cover everything you've got underneath so you probably want to keep it "null"
this.background)
}
Basically you give a view a background (rounded rectangle with borders in your case) then you can simply call the extension in your Activity/Fragment:
whateverView.addRippleEffect()
//or
whateverView.addRippleEffect(R.color.red)
See: https://developer.android.com/reference/android/graphics/drawable/RippleDrawable

1. Create the Ripple Drawable Contains the Backgound Shape
<ripple
xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?colorControlHighlight"> //defaul ripple color
<item>
<shape //the background shape when it's not being click
android:shape="rectangle">
<solid
android:color="#color/colorPrimary" />
<corners
android:radius="32dp" />
</shape>
</item>
</ripple>
2. Applying the Drawable to the View and REMOVE THE SHADOW
<Button
style="?borderlessButtonStyle" //remove the default shadow
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/background_button" //here
android:text="Sign up"
android:textAllCaps="false"
android:textColor="#android:color/white" />

Try setting clipToOutline of your View / ViewGroup to true, either in the code or through XML, it should limit the ripple's area accordingly (as long as you background shape matches the requirements, see the docs for more details).

Showing contact name with initial letter in circle

I need to display the contact name initial letter inside circle like in lollipop contacts. I didn't find any solution.
The circle should different colour for each user.

You can follow this. If you wanna save time you can use this library.
Edit
The link may be invalid any point of time. So I want to add the details below this.
repositories{
maven {
url 'http://dl.bintray.com/amulyakhare/maven'
}
}
dependencies {
compile 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
}
You can add which ever methodology you are following.
Basically you have to add one ImageView with same height and width and add this TextDrawable as a background of your view.
TextDrawable drawable = TextDrawable.builder()
.buildRect("A", Color.RED);
ImageView image = (ImageView) findViewById(R.id.image_view);
image.setImageDrawable(drawable);
The library has support for circle,square and rectangle drawables.

I didn't see any library for this but my solution is draw a circle in run time in a predefined layout in your xml use this :
How to draw circle by canvas in Android?
Then in your list adapter choose first letter of each name string using substring(0,1)
,and using setText() you can set list item textView to first letter.
If you need source code let me know to put it for you.
UPDATE:
I recently used very easy approach for this in one of my apps,
you should make a layout like this in your layout folder:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/rlWeekDay"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_gravity="right"
android:layout_margin="3dp"
android:background="#drawable/circle_shape">
<TextView
android:id="#+id/tvWeekDayFirstLetter"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text=" E "
android:textStyle="bold"
android:textColor="#color/colorPrimary"
android:textSize="20sp" />
</RelativeLayout>
And your shape in drawable folder as circle_shape.xml:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="oval"
android:dither="true">
<corners
android:bottomRightRadius="100dp"
android:bottomLeftRadius="100dp"
android:topLeftRadius="100dp"
android:topRightRadius="100dp"/>
<solid android:color="#ccc" />
</shape>
</item>
<item android:bottom="3dp">
<shape android:shape="oval"
android:dither="true">
<solid android:color="#color/white"/> <!-- this one is ths color of the Rounded Button -->
<corners
android:bottomRightRadius="100dp"
android:bottomLeftRadius="100dp"
android:topLeftRadius="100dp"
android:topRightRadius="100dp"/>
</shape>
</item>
</layer-list>
Then in your listView or recyclerview use this as the item to inflate.like this

Simple and small code to do this -
<com.google.android.material.button.MaterialButton
android:id="#+id/"
android:layout_width="40dp"
android:layout_height="50dp"
android:text="A"
android:clickable="false"
app:backgroundTint="#color/Blue200"
android:padding="0dp"
app:cornerRadius="50dp"
/>

By using a Material Card View and a Textview, it would be easy to create such a view.
<com.google.android.material.card.MaterialCardView
android:layout_width="50dp"
android:layout_height="50dp"
app:cardBackgroundColor="#color/red"
app:cardCornerRadius="50dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/initialTv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="AB" />
</com.google.android.material.card.MaterialCardView>

PopupWindow showing a border

When creating a PopupWindow it shows a border like in the following image:
How do I remove it?

Try to add this line :
mPopup.setBackgroundDrawable(new BitmapDrawable());

You can create one custom style and put that border the same color on background, try something like:
New | Android XML File.
myborder.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke
android:width="1dip"
android:color="#android:color/darker_gray" />
<solid
android:color="#android:color/background_dark" />
<padding
android:left="7dip"
android:top="7dip"
android:right="7dip"
android:bottom="7dip" />
<corners
android:radius="6dip" />
</shape>
Using the drawable Android XML file in a layout
Layout.xml
<LinearLayout
android:orientation="vertical"
android:background="#drawable/myborder"
android:layout_width="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="Text"
/>
<!-- ..................... -->

You need to create a custom layout and set border of parent layout,
i'll giving you a Logical idea for doing this.
Your layout must be like below.
dialog_layout.xml
<RelativeLayout>
<LinerLayout> <!-- You can **Set/Remove** all background properties of this LinearLayout-->
<!-- Here are all child element like EditText/ Or TedxView-->
</LinerLayout>
</RelativeLayout>
Here are link for border :
Border