Develop Reference

using cardview to get half discorectangle shape [duplicate]

I have the following CardView and I want to set different radius for each corner in the card. Is it possible to change them by XML or programmaticaly? Thanks in advance.
<android.support.v7.widget.CardView
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="wrap_content"
android:layout_marginRight="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
app:cardCornerRadius="0dp"
app:cardElevation="0dp">
</android.support.v7.widget.CardView>
EDIT
As Avinash suggest, I am looking for the behaviour of this lib github.com/captain-miao/OptionRoundCardview but using the default CardView item. If it is not possible to change it individually, this lib is a good approach.

It requires the official MaterialCardView (which extends the androidx.cardview.widget.CardView) and at least the version 1.1.0 of the Material components library.
Add to your layout the MaterialCardView:
<com.google.android.material.card.MaterialCardView
style="#style/CustomCardViewStyle"
...>
</com.google.android.material.card.MaterialCardView>
Define a custom style inheriting a material card style (for example Widget.MaterialComponents.CardView) and use the shapeAppearanceOverlay attribute:
<style name="CustomCardViewStyle" parent="#style/Widget.MaterialComponents.CardView">
<item name="shapeAppearanceOverlay">#style/ShapeAppearanceOverlay_card_custom_corners</item>
</style>
<style name="ShapeAppearanceOverlay_card_custom_corners" parent="">
<item name="cornerFamily">rounded</item>
<item name="cornerSizeTopRight">4dp</item>
<item name="cornerSizeTopLeft">8dp</item>
<item name="cornerSizeBottomRight">16dp</item>
<item name="cornerSizeBottomLeft">0dp</item>
</style>
You can also achieve it programmatically.
Just apply a custom ShapeAppearanceModel to the corners of the card.
Something like:
float radius = getResources().getDimension(R.dimen.my_corner_radius);
cardView.setShapeAppearanceModel(
cardView.getShapeAppearanceModel()
.toBuilder()
.setTopLeftCorner(CornerFamily.ROUNDED,..)
.setTopRightCorner(CornerFamily.ROUNDED,..)
.setBottomRightCorner(CornerFamily.ROUNDED,radius)
.setBottomLeftCornerSize(0)
.build());
Note: it requires the version 1.1.0 of the library.
With Jetpack compose you can use the shape parameter in the Card.
Something like:
Card(
shape = RoundedCornerShape(
topStart = 4.dp,
topEnd = 8.dp,
bottomEnd = 16.dp,
bottomStart = 2.dp,
)
){
Text("Content Card")
}

You can create a custom xml and name it rounded_corners.xml like this:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="1dp"
android:topLeftRadius="20dp"
android:topRightRadius="30dp"
android:bottomLeftRadius="40dp"
android:bottomRightRadius="50dp"/>
<solid android:color="your_background_color" />
</shape>
And then use this as the background for your CardView:
android:background="#drawable/rounded_corners"
EDIT: I just noticed that this may work for all other views other than CardView, so refer to this question for seeing how to do a workaround.

NOTE: This here is a workaround if you want to achieve rounded corners at the bottom only and regular corners at the top. This will not work if you want to have different radius for all four corners of the cardview. You will have to use material cardview for it or use some third party library.
Here's what seemed to work for me:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="#F9F9F9">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#drawable/profile_bg"/>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cvProfileHeader"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardCornerRadius="32dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="280dp"
android:orientation="vertical"
android:background="#drawable/profile_bg"
android:id="#+id/llProfileHeader"
android:gravity="center_horizontal">
<!--Enter your code here-->
</LinearLayout>
</androidx.cardview.widget.CardView>
</RelativeLayout>
There's two cardview's in all. The second cardview is the one that will have rounded corners (on all sides as usual) and will hold all other subviews under it. The first cardview above it is also at the same level (of elevation), and has the same background but is only about half the height of the second cardview and has no rounded corners (just the usual sharp corners). This way I was able to achieve partially rounded corners on the bottom and normal corners on the top. But for all four sides, you may have to use the material cardview.

In case, if you use ImageView inside CardView, you should change ImageView into ShapeableImageView. Normal ImageView only works with all corners not each corner.
Here is more detail example on material.io docs
themes.xml
<style name="MyCardView" parent="#style/Widget.MaterialComponents.CardView">
<item name="shapeAppearanceOverlay">#style/MyCardViewOverlay</item>
</style>
<style name="MyCardViewOverlay">
<item name="cornerFamily">rounded</item>
<!-- below items does not work with normal ImageView -->
<item name="cornerSizeTopRight">0dp</item>
<item name="cornerSizeTopLeft">60dp</item>
<item name="cornerSizeBottomRight">0dp</item>
<item name="cornerSizeBottomLeft">0dp</item>
</style>
layout.xml
<com.google.android.material.card.MaterialCardView
style="#style/MyCardView"
android:layout_width="200dp"
android:layout_height="200dp"
app:cardPreventCornerOverlap="false">
<com.google.android.material.imageview.ShapeableImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#color/orange_600"
app:shapeAppearanceOverlay="#style/MyCardViewOverlay" />
</com.google.android.material.card.MaterialCardView>

Hi you can add it programmatically or by xml with following code.
app:cardCornerRadius="0dp"// xml
cardView.setRadius(0);
this one is extra who is looking for elevation
app:cardElevation="0.7dp"//xml
app:cardMaxElevation="1dp"//xml
cardView.setCardElevation(2.1f);//code
cardView.setMaxCardElevation(3f);//code
The complete Java representation of the CardView’s XML.
CardView cardView = (CardView) findViewById(R.id.cardView);
cardView.setUseCompatPadding(true);
cardView.setContentPadding(30, 30, 30, 0);
cardView.setPreventCornerOverlap(true);
cardView.setCardBackgroundColor(Color.WHITE);
cardView.setCardElevation(2.1f);
cardView.setRadius(0);
cardView.setMaxCardElevation(3f);

Add number in circle within text in textview

The number 4 circle
As you see in the image there is number '4' in a circle within a text and it has a background color. It works as a reference when you click it opens a link in the browser. Is that something can be done in textview using spannable or any other way?

You can achieve this using Drawable.
Simply create background.xml in Drawable.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid
android:color="#color/colorAccent"/>
</shape>
And apply background in TextView,
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/background"
android:gravity="center"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="14dp"
android:paddingBottom="14dp"
android:text="04"
It will generate the result like this,

How to draw a circle around a buttons text in Android (API 21+)

I have a row of buttons each with numbers on them. I show which one is selected by changing the background, but one of these number would be the "current" number (kind of like a current date) and I want to indicate that it is the current one even when it is selected (since it will have the same background as all other selected ones) by adding a circle around the text
Kind of like this (with 23 being both selected and the current one):
I tried doing this by adding a radius to the button and adding padding but was having a bit of trouble, but even if it worked it feels like there is probably a better way.
How do I make the circle around the text in the button?

<?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" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/num_txt"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginTop="0dp"
android:background="#drawable/bg_red"
android:gravity="center"
android:text="My name is NON"
android:textColor="#FFFFFF"
android:textSize="10dp" />
</RelativeLayout>
</RelativeLayout>
bg_red.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<corners android:radius="10dip"/>
<stroke android:color="#FF0000" android:width="5dip"/>
<solid android:color="#FF0000"/>
</shape>
or try This or This

How to set white background for checkbox tick in Android?

I'm developing Android app for 4.0 version, and all checkboxes have got a black background for tick, but I need white. If I use "background" xml attribute as "white" then all checkbox (with text) is white; I need only white place for tick.

The most simple way - emulate CheckBox using ImageView with 3 background states (stateSelected=true, stateSelected=false, statePressed = true). Just create appropriate xml file with 3 backgrounds and set it to ImageView background. Then in code, when click on ImageView just switch ImageView.setSelected = !ImageView.isSelected. Hope its help

I dont know if i am extremely late or what, but here is the solution
Code snippet:
say this selector is name "checkbox_selector"
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true"
android:drawable="#drawable/cbchk_blue"
android:state_focused="false">
</item>
<item android:state_checked="true"
android:drawable="#drawable/cbchk_blue"
android:state_focused="true">
</item>
<item android:state_checked="false"
android:drawable="#drawable/cbunchk_blue"
android:state_focused="false">
</item>
<item android:state_checked="false"
android:drawable="#drawable/cbunchk_blue"
android:state_focused="true">
</item>
in order to set it just for the checkbox and not the entire text also, you could have it as:
<CheckBox
android:layout_width="45dip"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:button="#drawable/checkbox_selector"
android:text="#string/text_here" />

Maybe my solution is not very elegant, but it works for me:
I simplily create another layout with the dimensions of the checkbox rectangle (15x15) and with white background. Then I add this layout to a RelativeLayout, where I also put the checkbox. With a margin of 9dp, I put the white layout-rectangle below the checkbox, so it seems that the checkbox bacground color is white.
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="#dimen/login_large_margin"
android:layout_marginTop="#dimen/login_medium_margin" >
<RelativeLayout
android:layout_width="15dp"
android:layout_height="15dp"
android:layout_margin="9dp"
android:background="#color/white" >
</RelativeLayout>
<CheckBox
android:id="#+id/login_check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:text="#string/login_check"
android:textColor="#color/white" >
</CheckBox>
</RelativeLayout>

Put blackline border around ScrollView - Android

My question is if there is a way to put a simple blackline border around a ScrollView so the user is aware exactly where the ScrollView starts, stops and how wide it is. I cannot find any sort of XML or java code in the Android docs saying how to do this. I know this has to be possible.
Below is my XML code for the ScrollView I need to have a border.
<LinearLayout
.... />
<TextView
... />
//BORDER STARTS HERE
<ScrollView
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="94.5"
android:paddingBottom="5dp"
android:fillViewport="true" >
<LinearLayout
... >
<TextView
... />
</LinearLayout>
</ScrollView>
//BORDER ENDS HERE
<Button
... />
</LinearLayout>
EDIT
I just added a scrollviewborder.xml with the following code as a background for the ScrollView.
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<stroke
android:width="2dp"
android:color="#000000"/>
</shape>
The below screenshot is what it produced:
This is not quite what I wanted. I want a thin blackline bordering around and not a black box.

In light of your new requirements, try the following code:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid
android:color="#android:color/transparent"/>
<stroke
android:width="2dp"
android:color="#000000"/>
</shape>

You can set its background to be a shape drawable with a stroke.
Example:
<ScrollView
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="94.5"
android:paddingBottom="5dp"
android:background="#drawable/stroke_bg"
android:fillViewport="true" >
And in your drawables folder, have a stroke_bg.xml file:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<stroke
android:width="2dp"
android:color="#000000"/>
</shape>
This should result in a scroll view with a black border of width 2dp.

Is there an easy way to add a border to the top and bottom of an Android View?
There is no built-in "border" concept in Android that I can think of. You can emulate one through layouts, such as:
Wrap the TextView in a LinearLayout and add a plain View above and below it, with the Views having the desired android:background color and an appropriate android:layout_height (e.g., 1px, 1dip).
Wrap the TextView in a LinearLayout and add ImageView widgets above and below with your desired border images.
Wrap the TextView in a RelativeLayout, add in a plain View (with proper background & height) anchored to the top, another plain View anchored to the bottom, and your TextView anchored to the top and bottom. This takes advantage of RelativeLayout's z-axis support, so the border will be inside the space taken up by the TextView, rather than being outside the TextView as in the first two approaches.
Give the TextView a nine-patch PNG file as a background that has your borders. This is simplest from the XML standpoint, but you have to craft an appropriate nine-patch image.

Do not wrap it in a layout, as some people have suggested. This will make rendering your app a bit slower (maybe not noticeably, but still).
Instead, create a shape that only defines a child and use it as a background for your ScrollView.