Android 6.0+上的微调器背景不正确

Question

I use Android project(old project) on Eclipse.

I install ADT from here:

https://dl-ssl.google.com/android/eclipse/

In my manifest.xml

<uses-sdk
    android:minSdkVersion="15"
    android:targetSdkVersion="15" />

snippet of xml layout:

  <Spinner
        android:id="@+id/currencySpinner"
        style="@style/racommon_spinner_custom_style"
        android:layout_width="0dip"
        android:layout_height="40dip"
        android:layout_weight="0.3"
        android:prompt="@string/currency" />

here styles.xml

  <style name="racommon_spinner_custom_style" parent="@android:style/Widget.Holo.Light.Spinner">
    <item name="android:background">@drawable/racommon_spinner_custom_bg</item>
    <item name="android:clickable">true</item>
</style>

Here drawable racommon_spinner_custom_bg :

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/spinner_selected_custom_border"/>

    <item android:state_focused="true" android:state_pressed="true" android:drawable="@drawable/spinner_pressed_custom"/>

    <item android:drawable="@drawable/spinner_default_custom" />
</selector>

here res\\drawable-mdpi\\spinner_pressed_custom.9.png

Here result on Android 4.3

and here result on Android 6.0+

Here when click on spinner:

As you can see the background of spinner is different than on Android 4.0. On android 4.0. is correct spinner's background. But in android 6.0+ not correct.

Here result nine-pathch generator

Why?

Answer 1

I think its a problem of dpi, so i would suggest you make 9 patch image according to dpi

go to Below Link

Click Here

and Drag your current 9 patch image here, it will generate the images according to dpi.

Answer 2

Since you aren't setting gradient background programmatically, the problem is just with the style used from deprecated theme: Widget.Holo.Light.Spinner .

Just replace it with up to date theme like Widget.AppCompat.Light.Spinner .

Also you can try just to update targetSdkVersion and use more recent SDK version if that's an option for you.

Some clarification: the actual cause of the gradients to be broken on newer Android versions is the new requirement to specify values in dp, see Android Gradient on Lollipop not working. - API 21