I am developing an app in which I need to change the spinner background layout to match the background color. I researched and found that I need to create a 9 patch image. I have done creating the 9 patch image and used in the app but it looks bigger than the normal spinner and also I couldn't see the drop down button in the spinner as well.
I am so happy if you guys provide me a clear tutorial from start creating the 9 patch image for Spinner and using it in the app.
Code for the Spinner
<Spinner
android:id="@+id/spnIncredientone"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/txtMixtureTitle"
android:layout_marginLeft="5dip"
android:layout_marginRight="5dip"
android:background="@drawable/spinner_background"
android:prompt="@string/selectmixture" />
This question is related to
android
android-spinner
nine-patch
The answer is
When you set the spinner background color using
android:background="@color/your_color"your spinner default arrow will disappear
And also need to add fixed width and height to spinner so you can show the full content of the spinner.
so i found a way to do it , just like the above image.
Write your spinner code inside a frame layout, here you don't need to use a separate image view for showing drop down icon.
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Floor"
android:textColor="@color/white"/>
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/margin_short"
android:background="@drawable/custom_spn_background">
<Spinner
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:dropDownSelector="@color/colorAccent"
android:dropDownWidth="@dimen/dp_70"
android:spinnerMode="dropdown"
android:tooltipText="Select floor" />
</FrameLayout>
Create a new xml for Frame layout background or set
android:background="@color/your_color"
custom_spn_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="@dimen/dp_5" />
<solid android:color="@color/white" />
Spinner code
<Spinner
android:id="@+id/spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/text.white"
android:paddingBottom="13dp"
android:background="@drawable/bg_spinner"/>
bg_spinner.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="@color/colorPrimaryDark"/>
<corners android:radius="10dp" />
</shape>
</item>
<item android:gravity="center_vertical|right" android:right="8dp">
<layer-list>
<item android:width="12dp" android:height="12dp" android:gravity="center" android:bottom="10dp">
<rotate
android:fromDegrees="45"
android:toDegrees="45">
<shape android:shape="rectangle">
<solid android:color="#ffffff" />
<stroke android:color="#ffffff" android:width="1dp"/>
</shape>
</rotate>
</item>
<item android:width="20dp" android:height="10dp" android:bottom="21dp" android:gravity="center">
<shape android:shape="rectangle">
<solid android:color="@color/colorPrimaryDark"/>
</shape>
</item>
</layer-list>
</item>
</layer-list>
spinner_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/spinner_enabled" android:state_enabled="true" android:state_pressed="false" /> <!-- enable -->
<item android:drawable="@drawable/spinner_clicked" android:state_enabled="true" android:state_pressed="true" />
<item android:drawable="@drawable/spinner_disabled" android:state_enabled="false" /> <!-- disable -->
</selector>
spinner_enabled.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle" >
<solid android:color="#00f" />
<padding android:bottom="2dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<solid android:color="#fff" />
</shape>
</item>
<item>
<rotate
android:fromDegrees="90"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="135">
<rotate
android:fromDegrees="135"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="45">
<shape android:shape="rectangle">
<stroke
android:width="10dp"
android:color="#00f" />
<solid android:color="#00f" />
</shape>
</rotate>
</rotate>
</item>
</layer-list>
spinner_disabled.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle" >
<solid android:color="#ddf" />
<padding android:bottom="2dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<solid android:color="#fff" />
</shape>
</item>
<item>
<rotate
android:fromDegrees="90"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="135">
<rotate
android:fromDegrees="135"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="45">
<shape android:shape="rectangle">
<stroke
android:width="10dp"
android:color="#ddf" />
<solid android:color="#ddf" />
</shape>
</rotate>
</rotate>
</item>
</layer-list>
spinner_focused.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle" >
<solid android:color="#00f" />
<padding android:bottom="2dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<solid android:color="#BBDEFB" />
</shape>
</item>
<item>
<rotate
android:fromDegrees="90"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="135">
<rotate
android:fromDegrees="135"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="45">
<shape android:shape="rectangle">
<stroke
android:width="10dp"
android:color="#00f" />
<solid android:color="#00f" />
</shape>
</rotate>
</rotate>
</item>
</layer-list>
it works fine without nine-patch pictures.
api 10+
You just use this code
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:baselineAligned="false">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.80">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_vertical|start"
android:paddingBottom="5dp"
android:paddingTop="5dp">
<Spinner
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/spiner_back"
android:visibility="visible" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|end"
android:src="@drawable/ic_arrow_drop_down_black_24dp" />
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.20">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorred"
android:fontFamily="@font/raleway_extrabold"
android:text="GO"
android:textColor="@color/colorwhite" />
</LinearLayout>
</LinearLayout>
And This is background which i used...
<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="5dp" />
<solid android:color="@color/colorwhite" />
and here we go this is view which i archive...
spinner code:
<TextView
android:id="@+id/spinner"
android:gravity="bottom"
android:layout_marginTop="16dp"
android:background="@drawable/spinner_selector"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:paddingLeft="16dp"
android:textSize="16sp"
android:text="TextView" />
spinner_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/spinner_enable" android:state_enabled="true" android:state_pressed="false" /> <!-- enable -->
<item android:drawable="@drawable/spinner_clicked" android:state_pressed="true" android:state_enabled="true" />
<item android:drawable="@drawable/spinner_disable" android:state_enabled="false" /> <!-- disable -->
</selector>
spinner_disable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<solid android:color="#ddf" />
<padding android:bottom="1dp" />
</shape>
</item>
<item android:bottom="1dp">
<shape android:shape="rectangle" >
<solid android:color="#fff" />
<padding
android:left="0dp"
android:right="0dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<solid android:color="#fff" />
</shape>
</item>
<item
android:gravity="center_vertical|right"
android:right="8dp">
<layer-list>
<item
android:width="12dp"
android:height="12dp"
android:bottom="10dp"
android:gravity="center">
<rotate
android:fromDegrees="45"
android:toDegrees="45">
<shape android:shape="rectangle">
<solid android:color="#ddf" />
<stroke
android:width="1dp"
android:color="#aaaaaa" />
</shape>
</rotate>
</item>
<item
android:width="30dp"
android:height="10dp"
android:bottom="21dp"
android:gravity="center">
<shape android:shape="rectangle">
<solid android:color="@android:color/white" />
</shape>
</item>
</layer-list>
</item>
</layer-list>
spinner_clicked.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<solid android:color="#00f" />
<padding android:bottom="1dp" />
</shape>
</item>
<item android:bottom="1dp">
<shape android:shape="rectangle" >
<solid android:color="#fff" />
<padding
android:left="0dp"
android:right="0dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<solid android:color="#fff" />
</shape>
</item>
<item
android:gravity="center_vertical|right"
android:right="8dp">
<layer-list>
<item
android:width="12dp"
android:height="12dp"
android:bottom="10dp"
android:gravity="center">
<rotate
android:fromDegrees="45"
android:toDegrees="45">
<shape android:shape="rectangle">
<solid android:color="#00f" />
<stroke
android:width="1dp"
android:color="#aaaaaa" />
</shape>
</rotate>
</item>
<item
android:width="30dp"
android:height="10dp"
android:bottom="21dp"
android:gravity="center">
<shape android:shape="rectangle">
<solid android:color="@android:color/white" />
</shape>
</item>
</layer-list>
</item>
</layer-list>
spinner_enable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<solid android:color="#00f" />
<padding android:bottom="1dp" />
</shape>
</item>
<item android:bottom="1dp">
<shape android:shape="rectangle" >
<solid android:color="#BBDEFB" />
<padding
android:left="0dp"
android:right="0dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle" >
<solid android:color="#BBDEFB" />
</shape>
</item>
<item
android:gravity="center_vertical|right"
android:right="8dp">
<layer-list>
<item
android:width="12dp"
android:height="12dp"
android:bottom="10dp"
android:gravity="center">
<rotate
android:fromDegrees="45"
android:toDegrees="45">
<shape android:shape="rectangle">
<solid android:color="#00f" />
<stroke
android:width="1dp"
android:color="#aaaaaa" />
</shape>
</rotate>
</item>
<item
android:width="30dp"
android:height="10dp"
android:bottom="21dp"
android:gravity="center">
<shape android:shape="rectangle">
<solid android:color="#BBDEFB" />
</shape>
</item>
</layer-list>
</item>
</layer-list>
it works fine without nine-patch pictures. api 21+
It needs to work with the transparent background in a spinner.
spinner_enable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#00000000" />
<padding android:bottom="2dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle">
<solid android:color="#00000000" />
</shape>
</item>
<item
android:bottom="-2dp"
android:left="-3dp"
android:right="-3dp"
android:top="-3dp">
<shape>
<solid android:color="#00000000" />
<stroke
android:width="2dp"
android:color="#00aedb" />
</shape>
</item>
<item>
<rotate
android:fromDegrees="90"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="135">
<rotate
android:fromDegrees="135"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="45">
<shape android:shape="rectangle">
<stroke
android:width="10dp"
android:color="#00aedb" />
<solid android:color="#00aedb" />
</shape>
</rotate>
</rotate>
</item>
</layer-list>
spinner_disable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#00000000" />
<padding android:bottom="2dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle">
<solid android:color="#00000000" />
</shape>
</item>
<item
android:bottom="-2dp"
android:left="-3dp"
android:right="-3dp"
android:top="-3dp">
<shape>
<solid android:color="#00000000" />
<stroke
android:width="2dp"
android:color="#d9dadc" />
</shape>
</item>
<item>
<rotate
android:fromDegrees="90"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="135">
<rotate
android:fromDegrees="135"
android:pivotX="100%"
android:pivotY="60%"
android:toDegrees="45">
<shape android:shape="rectangle">
<stroke
android:width="10dp"
android:color="#d9dadc" />
<solid android:color="#d9dadc" />
</shape>
</rotate>
</rotate>
</item>
</layer-list>
spinner_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/spinner_enable" android:state_enabled="true" android:state_pressed="false" /> <!-- enable -->
<item android:drawable="@drawable/spinner_disable" android:state_enabled="false" /> <!-- disable -->
</selector>
You need to create a new personalized layout for your spinner items, like this, I will name it:
spinner_item.xml:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textColor="#ff0000" />
Then on your spinner declaration, you need to make your spinner use the new layout in the adapter:
ArrayAdapter adapter = ArrayAdapter.createFromResource(this,
R.layout.spinner_item, YOUR_SPINNER_CONTENT);
spinner.setAdapter(adapter);
To personalize elements from the dropdown list, you need to create another layout, I will name it spinner_dropdown_item.xml:
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
style="?android:attr/spinnerDropDownItemStyle"
android:singleLine="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="marquee"
android:textColor="#aa66cc"/>
and then on the adapter:
ArrayAdapter adapter = ArrayAdapter.createFromResource(this,
R.layout.spinner_item, YOUR_SPINNER_CONTENT);
adapter.setDropDownViewResource(R.layout.spinner_dropdown_item);
spinner.setAdapter(adapter);
It is already said in other answers . I did it like placing Spinner inside a CardView and changed the cardBackgroundColor . You could use some other views also and set its background either drawable or color . Thus it doesn't affect Spinner drop down arrow. As the spinner dropdown arrow disappears if we set background to Spinner.
<androidx.cardview.widget.CardView
android:id="@+id/cardView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:cardCornerRadius="6dp"
app:cardBackgroundColor="@color/white">
<Spinner
android:id="@+id/spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"/>
</androidx.cardview.widget.CardView>
You can change background color and drop down icon like doing this way
Step1: In drawable folder make background.xml for border of spinner.
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="@android:color/transparent" />
<corners android:radius="5dp" />
<stroke
android:width="1dp"
android:color="@color/darkGray" />
</shape> //edited
Step2: for layout design of spinner use this drop down icon or any image drop.pnj
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="3dp"
android:layout_weight=".28"
android:background="@drawable/spinner_border"
android:orientation="horizontal">
<Spinner
android:id="@+id/spinner2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_gravity="center"
android:background="@android:color/transparent"
android:gravity="center"
android:layout_marginLeft="5dp"
android:spinnerMode="dropdown" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_gravity="center"
android:src="@mipmap/drop" />
</RelativeLayout>
Finally looks like below image and it is every where clickable in round area and no need of to write click Lister for imageView.
For more details , you can see Here
Even though it is an older post but as I came across it while looking for same problem so I thought I will add my two cents as well. Here is my version of Spinner's background with DropDown arrow. Just the complete background, not only the arrow.
This is how it looks..
Apply on spinner like...
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/spinner_bg" />
spinner_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<color android:color="@color/InputBg" />
</item>
<item android:gravity="center_vertical|right" android:right="8dp">
<layer-list>
<item android:width="12dp" android:height="12dp" android:gravity="center" android:bottom="10dp">
<rotate
android:fromDegrees="45"
android:toDegrees="45">
<shape android:shape="rectangle">
<solid android:color="#666666" />
<stroke android:color="#aaaaaa" android:width="1dp"/>
</shape>
</rotate>
</item>
<item android:width="30dp" android:height="10dp" android:bottom="21dp" android:gravity="center">
<shape android:shape="rectangle">
<solid android:color="@color/InputBg"/>
</shape>
</item>
</layer-list>
</item>
</layer-list>
@color/InputBg should be replaced by the color you want as your background.
First it fills the background with desired color. Then a child layer-list makes a square and rotates it by 45 degrees and then a second Rectangle with background color covers the top part of rotated square making it look like a down arrow. (There is an extra stroke in rotated rectangle with is not really required)
I tried above samples but not working for me. The simplest solution is working for me awesome:
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#fff" >
<Spinner
android:id="@+id/spinner1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/Area"/>
</RelativeLayout>
Android Studio has a pre-defined code, you can directly use it. android:popupBackground="HEX COLOR CODE"
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Spinner
android:layout_marginTop="8dp"
android:background="@drawable/edit_border"
android:visibility="visible"
android:id="@+id/teach_repeat"
android:entries="@array/on_off"
android:textSize="12sp"
android:textColor="#ffffff"
android:layout_width="match_parent"
android:layout_height="40dp" />
<ImageView
android:layout_marginTop="8dp"
android:layout_gravity="end"
android:src="@drawable/ic_arrow_drop_down_white_18dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</FrameLayout>
As Jakob pointed out, android:popupBackground is the key attribute for the dropdown (opened state of the Spinner), but instead of using just a colour, I got the best results with a 9-patch drawable like this:
menu_dropdown_panel.9.png
Note that it's very easy to generate this 9-patch image for the background colour of your choice, for example using this online tool as I explained in this answer!
So, my Spinner XML definition looks like:
<Spinner
android:id="@+id/spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/navigationBlue"
android:spinnerMode="dropdown"
android:popupBackground="@drawable/menu_dropdown_panel"
/>
And the result:
(For custom fonts, as in the screenshot above, a custom SpinnerAdapter is needed too.)
Works at least on Android 4.0+ (API level 14+).
Source: Stackoverflow.com