Develop Reference

Button's background attribute doesn't work

Don't show background color in button. Create for background one xml file and set color and radius in that xml file , why don't show color?
my layout file and xml file`
<Button
android:id="#+id/signButton"
android:layout_width="257dp"
android:layout_height="53dp"
android:text="#string/sign_in"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="15sp"
android:background="#drawable/sign_in_button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.564"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.921" />
xml `
<?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">
<solid android:color="#color/white" />
<corners android:radius="100dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle">
<gradient android:endColor="#f92c8b" android:startColor="#f6bbd6" />
<corners android:radius="100dp" />
</shape>
</item>
</selector>

I would say you need to add android:state_pressed="false" to your second item.
Otherwise you are not providing a background for both states, pressed and not pressed.
Hope it helps.
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape android:shape="rectangle">
<solid android:color="#color/white" />
<corners android:radius="100dp" />
</shape>
</item>
<item android:state_pressed="false">
<shape android:shape="rectangle">
<gradient android:endColor="#f92c8b" android:startColor="#f6bbd6" />
<corners android:radius="100dp" />
</shape>
</item>

Variable thickness in Seekbar

I want the seekbar thickness variable. Progressed part of the seekbar should be more thick than the rest of the part. Here is what i want:
Can you give me any suggession? Sorry for the image quality :P

Try this
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<SeekBar
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:progressDrawable="#drawable/test"
android:thumb="#drawable/ic_send" />
</LinearLayout>
android:progressDrawable="#drawable/test"
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#android:id/background"
android:gravity="center_vertical|fill_horizontal">
<shape android:shape="rectangle"
android:tint="#color/colorAccent">
<corners android:radius="10dp"/>
<size android:height="10dp" />
<solid android:color="#color/colorAccent" />
</shape>
</item>
<item android:id="#android:id/progress"
android:gravity="center_vertical|fill_horizontal">
<scale android:scaleWidth="100%">
<selector>
<item android:state_enabled="false"
android:drawable="#android:color/transparent" />
<item>
<shape android:shape="rectangle"
android:tint="#color/colorPrimary">
<corners android:radius="8dp"/>
<size android:height="30dp" />
<solid android:color="#color/colorAccent" />
</shape>
</item>
</selector>
</scale>
</item>
</layer-list>
OUTPUT
NOTE
You van change corners radius and android:thumb as per your requirement

Android: Check box selector not working properly

I am developing an application in which i am using check box and applied selector on that. My code of check box is as follows :
<CheckBox
android:id="#+id/checkBox"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="0.5"
android:button="#drawable/custom_checkbox"
android:clickable="false"
android:focusable="false"
android:gravity="center" />
custom_checkbox.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/checkbox_checked" android:state_checked="true"/>
<item android:drawable="#drawable/checkbox_checked" android:state_pressed="true"/>
<item android:drawable="#drawable/checkbox_unchecked"/>
</selector>
checkbox_checked
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:drawable="#drawable/green_tic"/>
<item>
<shape android:shape="rectangle" >
<corners android:radius="#dimen/corner_radius_for_ask_option"/>
<size
android:height="20dp"
android:width="20dp" />
</shape>
</item>
</layer-list>
checkbox_unchecked
<?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:width="2px"
android:color="#color/color_light_grey" />
<corners android:radius="#dimen/corner_radius_for_ask_option" />
<size
android:height="20dp"
android:width="20dp" />
</shape>
</item>
</layer-list>
The above code is working fine on Note 3 and same kind of phone. It looks like :
But on samsung s2 it looks like :

Try adding a transparent solid to your shapes:
<shape android:shape="rectangle" >
<corners android:radius="#dimen/corner_radius_for_ask_option"/>
<size
android:height="20dp"
android:width="20dp" />
<solid android:color="#android:color/transparent"/>
</shape>
Same for the other drawable XML.

Android switches - making thumb height larger than track height, how?

Is there any way to make the height of the thumb of a switch bigger than the track height in Android versions prior to Lollipop ?
I am essentially trying to create a material design-like switch widget in Kitkat (and older versions- the problem here is the thumb by default 'fits' inside the track). I have been working on this for quite some time now but I can't seem to arrive at the correct design.
I followed the solutions on this SO post: How to change the size of a Switch Widget.
Any suggestions or a solution would be most appreciated.

I added a transparent stroke to my track drawable shape which results in a padding around the track:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#color/track_color"/>
<size android:height="#dimen/track_height" />
<size android:width="#dimen/track_width" />
<!-- results in the track looking smaller than the thumb -->
<stroke
android:width="6dp"
android:color="#00ffffff"/>
</shape>

Yup
I solved this
<android.support.v7.widget.SwitchCompat
android:id="#+id/mySwitch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textOn="ON"
android:textOff="OFF"
style="#style/Color1SwitchStyle"
android:text="" />
This is My Color1SwitchStyle
<style name="Color1SwitchStyle">
<item name="android:thumb">#drawable/customswitchselector</item>
<item name="android:track">#drawable/my_custom_track</item>
//when use Switch in xml file
<item name="track">#drawable/my_custom_track</item>
//when use android.support.v7.widget.SwitchCompat in xml
</style>
*Hear is my customswitchselector.xml
<?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/on" >
<shape
android:shape="rectangle"
android:dither="true"
android:useLevel="false"
android:visible="true">
<gradient
android:startColor="#66AAFF00"
android:endColor="#6600FF00"
android:angle="270"/>
<corners
android:radius="15dp"/>
<size
android:width="200dp"
android:height="80dp" />
<stroke
android:width="4dp"
android:color="#0000ffff"/>
</shape>
</item>
<item android:state_checked="false"
android:drawable="#drawable/off">
<shape
android:shape="rectangle"
android:dither="true"
android:useLevel="false"
android:visible="true">
<gradient
android:startColor="#66AAFF00"
android:endColor="#6600FF00"
android:angle="270"/>
<corners
android:radius="15dp"/>
<size
android:width="200dp"
android:height="80dp" />
<stroke
android:width="4dp"
android:color="#0000ffff"/>
</shape>
</item>
</selector>
And hear is magic my my_custom_track.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_checked="true"
android:state_enabled="true"
android:drawable="#drawable/switch_track_on" />
<item
android:state_checked="false"
android:state_enabled="false"
android:drawable="#drawable/switch_track_off" />
</selector>
switch_track_on.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape
android:shape="rectangle"
android:dither="true"
android:useLevel="false"
android:visible="true">
<gradient
android:startColor="#color/profile_pic_bg"
android:endColor="#color/profile_pic_bg"
android:angle="270"/>
<corners
android:radius="0dp"/>
<size
android:width="100dp"
android:height="10dp" />
<stroke
android:width="12dp"
android:color="#00ffffff"/>
</shape>
</item>
</layer-list>
switch_track_off.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape
android:shape="rectangle"
android:dither="true"
android:useLevel="false"
android:visible="true">
<gradient
android:startColor="#color/gray"
android:endColor="#color/gray"
android:angle="270"/>
<corners
android:radius="0dp"/>
<size
android:width="100dp"
android:height="10dp" />
<stroke
android:width="12dp"
android:color="#00ffffff"/>
</shape>
</item>
</layer-list>
Thanks stevenp without your comment i cannot solve this

Adding top and bottom inset in the 'track' drawable works for me. android:bottom="5dp" android:top="5dp"
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:bottom="5dp"
android:top="5dp">
<shape>
<corners android:radius="15dp" />
<solid android:color="#android:color/transparent" />
<stroke
android:width="2dp"
android:color="#EEEEEE" />
</shape>
</item>
<androidx.appcompat.widget.SwitchCompat
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:track="#drawable/switch_track_drawable" />

The solution I came up with is just to use for the track a shape that is a line instead of a rectangle, and set the width explicitly in its stroke.
For example if the switch is defined as follows:
<android.support.v7.widget.SwitchCompat
android:id="#+id/my_switch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:track="#drawable/switch_track"
app:theme="#android:style/Theme.DeviceDefault.Light" />
The in the switch_track.xml drawable use a line shape with whatever width you desire:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_checked="false" >
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="line" >
<stroke android:color="#50bbb9bf" android:width="5dp"/>
</shape>
</item>
<item android:state_checked="true">
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="line">
<stroke android:color="#5000b6de" android:width="5dp"/>
</shape>
</item>
</selector>

How to apply shape and selector simultaneously for Button?

I have applied a shape for a button like:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient android:startColor="#DD000000" android:endColor="#DD2d2d2d" android:angle="90"></gradient>
<corners android:radius="15dip"></corners>
</shape>
Now I want to use a selector like:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/active"
android:state_pressed="true" />
<item android:drawable="#drawable/passive"/>
for this Button as well. Is it possible ...???

use this way:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
<shape>.......</shape>
</item>
..........
..........
</selector>

Detailed to the point answer
Create a color resource in
res/values/colors.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<item name="yellow" type="color">#F7B500</item>
<item name="yellow_dark" type="color">#AC7E00</item>
<integer-array name="androidcolors">
<item>#color/yellow</item>
<item>#color/yellow_dark</item>
</integer-array>
</resources>
Create a drawable at
res/drawable/bg_yellow_round.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid android:color="#color/yellow" />
<stroke
android:width="2dp"
android:color="#color/yellow" />
<corners
android:bottomLeftRadius="20dp"
android:bottomRightRadius="20dp"
android:topLeftRadius="20dp"
android:topRightRadius="20dp" />
</shape>
Create another drawable, you want for transition at same place and name it
res/drawable/bg_yellow_dark_round.xml
<solid android:color="#color/yellow_dark" />
<stroke
android:width="2dp"
android:color="#color/yellow_dark" />
<corners
android:bottomLeftRadius="20dp"
android:bottomRightRadius="20dp"
android:topLeftRadius="20dp"
android:topRightRadius="20dp" />
Now create a color state list at
res/color/btn_selector_yellow.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:exitFadeDuration="#android:integer/config_shortAnimTime">
<item android:drawable="#color/yellow" android:state_focused="true" android:state_pressed="false"/>
<item android:drawable="#drawable/bg_yellow_dark_round" android:state_pressed="true"/>
<item android:drawable="#drawable/bg_yellow_round"/>
</selector>
Now set it to your button as following
<Button
android:id="#+id/button1"
android:layout_width="248dp"
android:layout_height="44dp"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="10dp"
android:layout_marginTop="20dp"
android:background="#color/btn_selector_yellow"
android:text="AZ_ is so cool" />
Now this will do transition from
to
.

shape.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#color/star_off"/>
<corners android:radius="5dp"/>
<padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" />
</shape>
selector.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:exitFadeDuration="#android:integer/config_mediumAnimTime">
<item android:drawable="#color/tab_focused" android:state_focused="true" android:state_pressed="false"/>
<item android:drawable="#color/tab_pressed" android:state_pressed="true"/>
<item android:drawable="#drawable/shape"/>
</selector>

You can also create a shape that is using a selector inside. If your shape is just changing its color in different states, this is a lot cleaner.
color/color_selector.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="#color/blue_dark" android:state_pressed="true" />
<item android:color="#color/blue_light" />
</selector>
drawable/shape.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#color/color_selector" />
<corners android:bottomLeftRadius="6dip" android:bottomRightRadius="6dp" />
<padding android:bottom="0dip" android:left="0dip" android:right="0dip" android:top="0dip" />
</shape>

Well I know it's way too late
But here is a solved example
<TextView
android:id="#+id/txt_out_going_calls"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="04dp"
android:layout_weight="1"
android:background="#drawable/header_text_view_selector"
android:gravity="center"
android:text="#string/outgoing_calls_tab_button_text"
android:textColor="#color/home_text_color" />
and my header_text_view_selector
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true">
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#color/home_fragment_tab_color_selected"/>
<corners android:radius="25dip" />
<padding android:bottom="08dip" android:left="9dip" android:right="9dip" android:top="08dip" />
</shape>
</item>
<item android:state_selected="false">
<shape>
<solid android:color="#color/home_fragment_tab_color_simple"/>
<corners android:radius="25dip" />
<padding android:bottom="08dip" android:left="9dip" android:right="9dip" android:top="08dip" />
</shape>
</item>
</selector>
So basically i m creating a rounded textview with selector. Here i m handling only state_selected and not_selected. Hope it helps

This is my way, and it works!
<item android:state_pressed="true">
<shape android:shape="oval">
<gradient android:centerX=".6"
android:centerY=".40"
android:endColor="#color/colorPrimary"
android:gradientRadius="20"
android:startColor="#color/colorPrimary"
android:type="radial" />
<stroke android:width="1dp"
android:color="#FFFFFF" />
<size android:width="55dp"
android:height="55dp" />
</shape>
</item>
<item android:state_focused="false">
<shape android:shape="oval">
<gradient android:centerX=".6"
android:centerY=".40"
android:endColor="#android:color/transparent"
android:gradientRadius="20"
android:startColor="#android:color/transparent"
android:type="radial" />
<stroke android:width="1dp"
android:color="#FFFFFF" />
<size android:width="55dp"
android:height="55dp" />
</shape>
</item>

My example is a circle button with state_pressed.
code bellow:
<?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="oval">
<solid android:color="#color/light_primary_color" />
</shape>
</item>
<item>
<shape android:shape="oval">
<solid android:color="#color/accent_color" />
</shape>
</item>
</selector>

Use your shape name as you use any image and use it selector as you use image. Try out you will not face any problem. Is that what you were asking?

To be more reusable, you can set states on single properties. Avoid duplicating your shapes
<selector
xmlns:android="http://schemas.android.com/apk/res/android"
>
<item>
<shape android:shape="rectangle" >
<corners android:radius="5dp"/>
<solid
android:state_enabled="false"
android:color="#color/transparent"
/>
<solid
android:state_enabled="true"
android:color="#color/background"
/>
<stroke
android:width="#dimen/dividerHeight"
android:color="#color/dividerLight"
/>
</shape>
</item>
</selector>
I was able to set background programmatically once disabled using this method.