Develop Reference

How do I set background, text color and corners on click state of button?

Here is my action_btn_state drawable
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:drawable="#color/colorAccent"
android:color="#color/white">
<shape>
<stroke
android:width="1dp"
android:color="#color/action_btn_border" />
<corners
android:radius="3dp" />
</shape>
</item>
<item android:state_focused="true"
android:drawable="#color/colorAccent"
android:color="#color/white">
<shape>
<stroke
android:width="1dp"
android:color="#color/action_btn_border" />
<corners
android:radius="3dp" />
</shape>
</item>
<item
android:drawable="#null"
android:color="#color/colorAccent" >
<shape>
<stroke
android:width="1dp"
android:color="#color/action_btn_border" />
<corners
android:radius="3dp" />
</shape>
</item>
This is my layout
<Button
android:layout_width="70sp"
android:layout_height="30sp"
android:layout_marginRight="8sp"
android:padding="0sp"
android:layout_gravity="center"
android:textColor="#color/msg_item_action_btn"
android:background="#drawable/action_btn_state"
android:text="Like"/>
And here is my output, I have taken the screenshot when first button is clicked.As you can see it has no round corners, color is not changed to white and and the default shadow is coming which I dont want. Can anyone help how can I achieve this.

You should use a selector for different states of your button like pressed, focused,... states in separate xml file and set it for your background button
Here is a sample code for selector of a button:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/action_btn_state" />
<item android:state_pressed="true"android:drawable="#drawable/action_selected"/>
</selector>
You can define another xml file for pressed state with your round and color and set in this selector.

Progress bar with rounded corners?

I am trying to achieve this progress bar design:
The current code that I have produces this:
This is the code:
<item android:id="#android:id/background">
<shape>
<corners android:radius="8dp"/>
<solid android:color="#color/dirtyWhite"/>
</shape>
</item>
<item android:id="#android:id/progress">
<clip>
<shape>
<corners android:radius="8dp"/>
<solid android:color="#color/colorPrimaryDark"/>
</shape>
</clip>
</item>
My progress bar:
<ProgressBar
android:id="#+id/activeProgress"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:progress="10"
android:progressDrawable="#drawable/rounded_corners_progress_bar"/>
I tried adding <size> attribute on the <shape> in <clip to make the progress shape a bit smaller but it did not work. Also, the progress bar is flat and I want to be curved as per design. What I need to change in order to achieve the design?

How to make the progress shape a bit smaller?
You need to give the progress item a little padding, like so:
<item android:id="#android:id/progress"
android:top="2dp"
android:bottom="2dp"
android:left="2dp"
android:right="2dp">
How to make the progress bar to be curved as per design?
Replace the <clip></clip> element, with <scale android:scaleWidth="100%"></scale>. That will make the shape keep its form as it grows - and not cut off.
Unfortunately, it will have a little unwanted visual effect at the beginning - as the shape corners don't have enough space to draw. But it might be good enough for most cases.
Full code:
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#android:id/background">
<shape>
<corners android:radius="8dp"/>
<solid android:color="#color/dirtyWhite"/>
</shape>
</item>
<item android:id="#android:id/progress"
android:top="1dp"
android:bottom="1dp"
android:left="1dp"
android:right="1dp">
<scale android:scaleWidth="100%">
<shape>
<corners android:radius="8dp"/>
<solid android:color="#color/colorPrimaryDark"/>
</shape>
</scale>
</item>
</layer-list>

With the Material Components Library you can use the LinearProgressIndicator and the app:trackCornerRadius attribute.
Something like:
<com.google.android.material.progressindicator.LinearProgressIndicator
android:indeterminate="true"
app:trackThickness="xxdp"
app:trackCornerRadius="xdp"/>
It works also for the determinate progress indicator removing the android:indeterminate="true" or using android:indeterminate="false"
Note: it requires at least the version 1.3.0.

Thanks to Georgi Koemdzhiev for a nice question and images. For those who want to make similar to his, do the following.
1) Create a background for a ProgressBar.
progress_bar_background.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle"
>
<corners android:radius="3dp" />
<stroke android:color="#color/white" android:width="1dp" />
</shape>
2) Create a scale for the ProgressBar.
curved_progress_bar.xml:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#android:id/background">
<shape>
<corners android:radius="2dp" />
<solid android:color="#color/transparent" />
</shape>
</item>
<item android:id="#android:id/progress">
<clip>
<shape>
<corners android:radius="2dp" />
<solid android:color="#ffff00" />
</shape>
</clip>
</item>
</layer-list>
3) In layout file add the ProgressBar.
<FrameLayout
android:layout_width="match_parent"
android:layout_height="6dp"
android:layout_marginStart="20dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="20dp"
android:background="#drawable/progress_bar_background"
>
<ProgressBar
android:id="#+id/progress_bar"
style="#style/Widget.AppCompat.ProgressBar.Horizontal"
android:layout_width="match_parent"
android:layout_height="4dp"
android:layout_margin="1dp"
android:indeterminate="false"
android:progressDrawable="#drawable/curved_progress_bar"
/>
</FrameLayout>

You can achieve progress bar with both inner progress color ,border
color,empty progress with transparent color.
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#android:id/background">
<shape>
<corners android:radius="15dip" />
<stroke android:width="1dp" android:color="#color/black" />
</shape>
</item>
<item android:id="#android:id/secondaryProgress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#color/black"
android:centerColor="#color/trans"
android:centerY="0.75"
android:endColor="#color/black"
android:angle="270"
/>
</shape>
</clip>
</item>
<item
android:id="#android:id/progress"
>
<clip>
<shape>
<corners
android:radius="5dip" />
<gradient
android:startColor="#color/black"
android:endColor="#color/black"
android:angle="270" />
</shape>
</clip>
</item>
</layer-list>

<com.google.android.material.progressindicator.LinearProgressIndicator
android:id="#+id/pb_team2"
android:layout_width="0dp"
android:layout_height="8dp"
android:layout_marginStart="55dp"
android:layout_marginEnd="15dp"
app:trackColor="#E0E0E0"
app:trackCornerRadius="6dp"
app:trackThickness="8dp"
android:progress="2"
app:indicatorColor="#color/red"
android:scaleX="-1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/tv_versus"
app:layout_constraintTop_toBottomOf="#id/tv_team2_score" />

add material dependencies in build.gradle(Module)
implementation 'com.google.android.material:material:1.6.0'
come back at activity_main.xml. Add
<com.google.android.material.progressindicator.LinearProgressIndicator>
...
app:trackCornerRadius="3dp"
</com.google.android.material.progressindicator.LinearProgressIndicator>
Hope it will do your work.

You can create a custom progressbar with Drawable.
1) create first drawable as a custom_progress_bar_horizontal.xml
<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#android:id/background">
<shape>
<padding
android:bottom="2dip"
android:left="2dip"
android:right="2dip"
android:top="2dip" />
<corners android:radius="5dip" />
<gradient
android:angle="270"
android:centerColor="#80385682"
android:centerY="0.50"
android:endColor="#80577AAF"
android:startColor="#80222F44" />
</shape>
</item>
<item android:id="#android:id/progress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:angle="90"
android:endColor="#FF1997E1"
android:startColor="#FF0E75AF" />
</shape>
</clip>
</item>
</layer-list>
2) Create style in style.xml file.
<style name="CustomProgressBar" parent="android:Widget.ProgressBar.Horizontal">
<item name="android:indeterminateOnly">false</item>
<item name="android:progressDrawable">#drawable/custom_progress_bar_horizontal</item>
<item name="android:minHeight">10dip</item>
<item name="android:maxHeight">20dip</item>
</style>
3) Use anywhere in your project.
<ProgressBar
android:id="#+id/mProgressBar"
style="#style/CustomProgressBar"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Output:-

Android: custom seekbar thumb doesn't show correctly

I have a custom SeekBar with a specific style:
<SeekBar
android:id="#+id/mediacontroller_progress"
style="#style/MediaSeekBar"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="wrap_content" />
MediaSeekBar style:
<style name="MediaSeekBar" parent="android:Widget.SeekBar">
<item name="android:progressDrawable">#drawable/media_seek_bar</item>
<item name="android:minHeight">2dp</item>
<item name="android:maxHeight">2dp</item>
<item name="android:thumb">#drawable/media_seek_bar_thumb</item>
<item name="android:progress">0</item>
</style>
media_seek_bar drawable:
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#android:id/background">
<shape>
<corners android:radius="0dip" />
<solid android:color="#20ffffff" />
</shape>
</item>
<item android:id="#android:id/secondaryProgress">
<clip>
<shape>
<corners android:radius="0dip" />
<gradient
android:startColor="#80ffd300"
android:centerColor="#80ffb600"
android:centerY="0.75"
android:endColor="#a0ffcb00"
android:angle="270" />
</shape>
</clip>
</item>
<item android:id="#android:id/progress">
<clip>
<shape>
<corners android:radius="0dip" />
<solid android:color="#color/theme_accent_1" />
</shape>
</clip>
</item>
</layer-list>
media_seek_bar_thumb drawable:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:drawable="#drawable/control_pressed" />
<item android:state_focused="true"
android:drawable="#drawable/control_pressed" />
<item android:state_selected="true"
android:drawable="#drawable/control_pressed" />
<item android:drawable="#drawable/control_normal" />
</selector>
And the result:
without press
when I press thumb
So the problem is the area arround the yellow circle: it's translucent in my png files but not in App.

Problem is in your images inside selector. Probably images have extra space. I have tried to run your code with custom drawable inside selector and it works fine. Here my circle drawable:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#ffe600"/>
<size
android:width="15dp"
android:height="15dp"/>
</shape>

<SeekBar
android:splitTrack="false"
....
/>
Will be ok.

just set this code and work
android:thumbTint="#android:color/transparent" // this code for hide thumb
android:splitTrack="false" // this code for show correctly

How to create custom spinner like border around the spinner with down triangle on the right side?

I want to develop custom spinner like line around spinner with triangle at right bottom corner.
like following image
For above fig I wrote my custom spinner like a
spinner.xml
<Spinner android:background="#drawable/spinner_background"/>
spinner_background.xml
<?xml version="1.0" encoding="UTF-8"?>
<item android:state_pressed="true"
android:drawable="#drawable/spinner_ab_pressed_new_theme_bs">
<shape>
<solid
android:color="#color/White" />
<corners android:radius="3dp" />
<padding
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp" />
<stroke
android:width="2dp"
android:color="#color/skyblue" />
</shape>
</item>
<!-- spinner_ab_default_new_theme_bs -> this image for corner triangle -->
<item
android:drawable="#drawable/spinner_ab_default_new_theme_bs" >
<shape>
<solid
android:color="#color/White">
</solid>
<corners android:radius="3dp" />
<padding
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp" />
<stroke
android:width="2dp"
android:color="#color/gray"/>
</shape>
</item>
And I got output like following image
I tried lot but not achieve my goal please anybody have solution to develop spinner.
like above first one image.

Spinner
<Spinner
android:id="#+id/To_Units"
style="#style/spinner_style" />
style.xml
<style name="spinner_style">
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:background">#drawable/gradient_spinner</item>
<item name="android:layout_margin">10dp</item>
<item name="android:paddingLeft">8dp</item>
<item name="android:paddingRight">20dp</item>
<item name="android:paddingTop">5dp</item>
<item name="android:paddingBottom">5dp</item>
<item name="android:popupBackground">#DFFFFFFF</item>
</style>
gradient_spinner.xml (in drawable folder)
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item><layer-list>
<item><shape>
<gradient android:angle="90" android:endColor="#B3BBCC" android:startColor="#E8EBEF" android:type="linear" />
<stroke android:width="1dp" android:color="#000000" />
<corners android:radius="4dp" />
<padding android:bottom="3dp" android:left="3dp" android:right="3dp" android:top="3dp" />
</shape></item>
<item ><bitmap android:gravity="bottom|right" android:src="#drawable/spinner_arrow" />
</item>
</layer-list></item>
</selector>
#drawable/spinner_arrow is your bottom right corner image

This is a simple one.
your_layout.xml
<android.support.v7.widget.AppCompatSpinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/spinner_background"
/>
In the drawable folder, spinner_background.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item><layer-list>
<item>
<shape>
<solid
android:color="#color/colorWhite">
</solid>
<corners android:radius="3dp" />
<padding
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp" />
<stroke
android:width="2dp"
android:color="#color/colorDarkGrey"/>
</shape>
</item>
<item >
<bitmap android:gravity="bottom|right"
android:src="#drawable/ic_arrow_drop_down_black_24dp" />
</item>
</layer-list></item>
</selector>
Preview:

You can achieve the following by using a single line in your spinner declaration in XML:
Just add this: style="#android:style/Widget.Holo.Light.Spinner"
This is a default generated style in android. It doesn't contain borders around it though. For that you'd better search something on google.
Hope this helps.
UPDATE:
AFter a lot of digging I got something which works well for introducing border around spinner.
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:bottom="8dp"
android:top="8dp">
<shape>
<solid android:color="#android:color/white" />
<corners android:radius="4dp" />
<stroke
android:width="2dp"
android:color="#9E9E9E" />
<padding
android:bottom="16dp"
android:left="8dp"
android:right="16dp"
android:top="16dp" />
</shape>
</item>
</layer-list>
Place this in the drawable folder and use it as a background for spinner. Like this:
<RelativeLayout
android:id="#+id/speaker_relative_layout"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:background="#drawable/spinner_style"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<Spinner
android:id="#+id/select_speaker_spinner"
style="#style/Widget.AppCompat.DropDownItem.Spinner"
android:layout_width="match_parent"
android:layout_height="70dp"
android:entries="#array/select_speaker_spinner_array"
android:spinnerMode="dialog" />
</RelativeLayout>

If you don't prefer to create multiple XML files, try:
<com.google.android.material.card.MaterialCardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:strokeWidth="1dp"
app:strokeColor="#color/black"
app:cardCornerRadius="4dp">
<androidx.appcompat.widget.AppCompatSpinner
android:id="#+id/spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="20dp"/>
</com.google.android.material.card.MaterialCardView>
To change the border color:
app:strokeColor="YOUR_COLOR_HERE"
To change the border's width:
app:strokeWidth="YOUR_DP_WIDTH_HERE"

There are two ways to achieve this.
1- As already proposed u can set the background of your spinner as custom 9 patch Image with all the adjustments made into it .
android:background="#drawable/btn_dropdown"
android:clickable="true"
android:dropDownVerticalOffset="-10dip"
android:dropDownHorizontalOffset="0dip"
android:gravity="center"
If you want your Spinner to show With various different background colors i would recommend making the drop down image transparent, & loading that spinner in a relative layout with your color set in.
btn _dropdown is as:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_window_focused="false" android:state_enabled="true"
android:drawable="#drawable/spinner_default" />
<item
android:state_window_focused="false" android:state_enabled="false"
android:drawable="#drawable/spinner_default" />
<item
android:state_pressed="true"
android:drawable="#drawable/spinner_pressed" />
<item
android:state_focused="true" android:state_enabled="true"
android:drawable="#drawable/spinner_pressed" />
<item
android:state_enabled="true"
android:drawable="#drawable/spinner_default" />
<item
android:state_focused="true"
android:drawable="#drawable/spinner_pressed" />
<item
android:drawable="#drawable/spinner_default" />
</selector>
where the various states of pngwould define your various States of spinner seleti

To change only "background" (add corners, change color, ....) you can put it into FrameLayout with wanted background drawable, else you need to make nine patch background for to not lose spinner arrow. Spinner background is transparent.

You could design a simple nine-patch png image and use it as the background of spinner. Using GIMP you can put both border and right triangle in image.

It's super easy you can just add this to your Adapter -> getDropDownView
getDropDownView:
convertView.setBackground(getContext().getResources().getDrawable(R.drawable.bg_spinner_dropdown));
bg_spinner_dropdown:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#color/white" />
<corners
android:bottomLeftRadius=enter code here"25dp"
android:bottomRightRadius="25dp"
android:topLeftRadius="25dp"
android:topRightRadius="25dp" />
</shape>

How to set button style in android

Normal button looks like:
Now, please let me know, How can i make a simple button same as an attached image button (i.e. button corner shape is round and also there is no gap between two buttons)

1- create shapes (with desired colors) for pressed and released states
To create the shapes I would suggest this great website the will do it for you: http://angrytools.com/android/button/
drawable\botton_shape_pressed.xml:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="#color/pressed_button_background"
android:endColor="#color/pressed_button_background"
android:angle="45"/>
<padding android:left="7dp"
android:top="7dp"
android:right="7dp"
android:bottom="7dp" />
<corners android:radius="8dp" />
</shape>
drawable\botton_shape_released.xml:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="#color/released_button_background"
android:endColor="#color/released_button_background"
android:angle="45"/>
<padding android:left="7dp"
android:top="7dp"
android:right="7dp"
android:bottom="7dp" />
<corners android:radius="8dp" />
</shape>
2- create a selector for the two shapes
drawable\botton_selector.xml:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/botton_shape_pressed"
android:state_pressed="true" />
<item android:drawable="#drawable/botton_shape_pressed"
android:state_selected="true" />
<item android:drawable="#drawable/botton_shape_released" />
</selector>
3- use the selector for the button
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/test"
android:textColor="#color/blue_text"
android:onClick="testOnClickListener"
android:background="#drawable/botton_selector" />

9-patch would work fine here, but I try to avoid them since it's hard for me to do them :(
You can try having a selector and using a shape for each state:
The shape would look like this:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#AAFFFFFF"/>
<corners android:bottomRightRadius="7dp"
android:bottomLeftRadius="7dp"
android:topLeftRadius="7dp"
android:topRightRadius="7dp"/>
</shape>

You need to create a 9-patch drawable. In order to have no gap (margin) between the buttons you need to create the appropriate layout in XML and set the margin to 0.

look for foursquared source code and look for SegmentedButton.java file, this is the file that implement these buttons shown in the image.

Create a Nine patch drawable which is easy with draw9patch (part of android/tools) and then apply styles and themes... the tutorial at this link (Androgames.net) should get you started.

to style the text you can add this to the strings.xml
<style name="ButtonText">
<item name="android:layout_width">fill_parent</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:textColor">#ffffff</item>
<item name="android:gravity">center</item>
<item name="android:layout_margin">3dp</item>
<item name="android:textSize">30dp</item>
<item name="android:textStyle">bold</item>
<item name="android:shadowColor">#000000</item>
<item name="android:shadowDx">1</item>
<item name="android:shadowDy">1</item>
<item name="android:shadowRadius">2</item>
</style>
and call it in the main.xml button
style="#style/ButtonText"
and an alternative method you can play with is creating in #drawable/btn_black with the following...
<?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="#343434" />
<stroke
android:width="1dp"
android:color="#171717" />
<corners
android:radius="3dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
<item>
<shape>
<gradient
android:startColor="#343434"
android:endColor="#171717"
android:angle="270" />
<stroke
android:width="1dp"
android:color="#171717" />
<corners
android:radius="4dp" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
</shape>
</item>
</selector>

You can also use ImageView in your xml file and than give onClickable and onFocusable true and then create onClick event method on backend code and give the name of the method on xml , so that instead of dealing with all shape or button issues you just put the imageview there and make it act like a button.Here is sample code for you
<ImageView
android:id="#+id/test"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:onClick="testClickEvent"
android:paddingRight="8dip"
android:paddingBottom="8dip"
android:src="#drawable/testImg"/>
As I said on backend side create method with sign like this and this will do the job
public void testClickEvent(View v){}
Then implement what you wanna do in this method

button_primary.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:angle="270"
android:endColor="#color/background"
android:startColor="#color/background" />
<corners android:radius="1dp" />
<stroke
android:width="2px"
android:color="#color/colorPrimary3" />
</shape>
call
style="#style/button_primary"