B4A Library Preferences - Material Design Preferences

corwin42 · Jan 22, 2017

This library provides a framework to create nice looking Material Design Preferences down to API9. It uses this GitHub project to fix some bugs in the android support preferences stuff. It also adds some nice features like simple icon tinting, simple menu list preferences and a color picker.

For a guide on how to implement settings for Material Design read this.

Installation:

Extract all of the PreferencesLibX_XX.zip file to your additional libraries folder. These are .xml, .jar, 4 .aar files.
Requires AppCompat library.
Requires B4A 6.31+

minimum SDK Version: 14
Needs support library 27

If you are updating you can delete the old library aar files.

Your Support:

Creating libraries and wrappers for existing library projects is a lot of work. The use of this library is totally free and you even don't need to mention in your app that you use it.

But if you use this library in your projects and you think it is useful to you please consider to make a donation:

Thanks very much for your support.

Usage:

You need to use AppCompat Library together with this library.
Don't forget to add the Preference library to your project.

1. Enhance your theme in manifest editor
Add a preferenceTheme item and the two items for the IconTint:

B4X:

CreateResource(values, theme.xml,
<resources>
    <style name="MyAppTheme" parent="@style/Theme.AppCompat.Light.DarkActionBar">
        <item name="colorPrimary">#0098FF</item>
        <item name="colorPrimaryDark">#007CF5</item>
        <item name="colorAccent">#FF5522</item>
        <item name="windowNoTitle">true</item>
        <item name="windowActionBar">false</item>
        <item name="preferenceTheme">@style/PreferenceThemeOverlay.Material</item>
        <item name="asp_preferenceIconTint">?colorAccent</item>
        <item name="asp_preferenceDialogIconTint">?asp_preferenceIconTint</item>
        <item name="windowActionModeOverlay">true</item>
    </style>
</resources>
)

2. Extend from AppCompatPreferenceActivity

B4X:

#Extends: de.amberhome.preferences.AppCompatPreferenceActivity

3. Add PreferenceView to your Layout (with designer or by code)

4. Load the Layout in Activity_Create() as normal

5. Create your Preference elements in PreferenceView_Ready() event.

See the example for detailed usage.

The example has minSdkVersion set to 14. This is because the MaterialDateTimePicker needs this. The Preference library itself will work with a minimal SDK version of 9.

The example projects additionally needs MaterialDateTimePicker, XMLLayoutBuilder and DateUtils libraries.

Reference:

Preferences
Author: Markus Stipp
Version: 1.11

CheckBoxPreference
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

Checked As Boolean

DefaultValue As Object [write only]

Dependency As String

DisableDependentsState As Boolean

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

Order As Int

Persistent As Boolean

Selectable As Boolean

Summary As String

SummaryOffText As CharSequence

SummaryOnText As CharSequence

SummaryTextColor As Int [write only]

Title As String

TitleTextColor As Int [write only]

Visible As Boolean

ColorPreference
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Methods:

GetNameForColor (Color As Int) As CharSequence

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

Color As Int

ColorNames()() As CharSequence

ColorValues()() As Int

ColumnCount As Int

DefaultValue As Object [write only]

Dependency As String

DialogIcon As Drawable

DialogIconTintEnabled As Boolean [write only]

DialogTitle As CharSequence

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

NegativeButtonText As CharSequence

Order As Int

Persistent As Boolean

PositiveButtonText As CharSequence

Selectable As Boolean

Summary As String

SummaryTextColor As Int [write only]

SwatchSize As Int

Title As String

TitleTextColor As Int [write only]

Visible As Boolean

EditTextPreference
Events:

EditTextCreated (Edit As EditText)

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

DefaultValue As Object [write only]

Dependency As String

DialogIcon As Drawable

DialogIconTintEnabled As Boolean [write only]

DialogMessage As CharSequence

DialogTitle As CharSequence

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

NegativeButtonText As CharSequence

Order As Int

Persistent As Boolean

PositiveButtonText As CharSequence

Selectable As Boolean

Summary As String

SummaryTextColor As Int [write only]

Text As String

Title As String

TitleTextColor As Int [write only]

Visible As Boolean

ListPreference
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Fields:

MENU_MODE_DIALOG As Int

MENU_MODE_SIMPLE_ADAPTIVE As Int

MENU_MODE_SIMPLE_DIALOG As Int

MENU_MODE_SIMPLE_MENU As Int

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

DefaultValue As Object [write only]

Dependency As String

DialogIcon As Drawable

DialogIconTintEnabled As Boolean [write only]

DialogTitle As CharSequence

Enabled As Boolean

Entries As Map

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

MenuMode As Int

NegativeButtonText As CharSequence

Order As Int

Persistent As Boolean

PositiveButtonText As CharSequence

Selectable As Boolean

SimpleMenuPreferredWidthUnit As Float

Summary As String

SummaryTextColor As Int [write only]

Title As String

TitleTextColor As Int [write only]

Value As String

Visible As Boolean

MultiSelectListPreference
Events:

PreferenceChanged (Preference As Preference, NewValue As List)

PreferenceClicked (Preference As Preference)

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As List)
Initializes the object

IsInitialized As Boolean

Properties:

DefaultValue As Object [write only]

Dependency As String

DialogIcon As Drawable

DialogIconTintEnabled As Boolean [write only]

DialogTitle As CharSequence

Enabled As Boolean

Entries As Map

Icon As Drawable

Intent As Intent

Key As String

NegativeButtonText As CharSequence

Order As Int

Persistent As Boolean

PositiveButtonText As CharSequence

Selectable As Boolean

SelectedItems() As Boolean [read only]

Summary As String

Title As String

Values As List

Visible As Boolean

Preference
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

DefaultValue As Object [write only]

Dependency As String

Enabled As Boolean

Icon As Drawable

Intent As Intent

Key As String

Order As Int

Persistent As Boolean

Selectable As Boolean

Summary As String

Title As String

Visible As Boolean

PreferenceCategory
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Methods:

AddCategory (EventName As String, Key As String, Title As String) As PreferenceCategoryWrapper

AddCheckBoxPreference (EventName As String, Key As String, Title As String, SummaryOn As String, SummaryOff As String, Default As Boolean) As CheckBoxPreferenceWrapper

AddColorPreference (EventName As String, Key As String, Title As String, Summary As String, Default As Int, Colors() As Int, Names() As String) As ColorPreferenceWrapper

AddEditTextPreference (EventName As String, Key As String, Title As String, Summary As String, Default As String) As EditTextPreferenceWrapper

AddListPreference (EventName As String, Key As String, Title As String, Summary As String, Default As String, Values() As String, Texts() As String) As ListPreferenceWrapper

AddMultiSelectListPreference (EventName As String, Key As String, Title As String, Summary As String, Default As List, Values() As String, Texts() As String) As MultiSelectListPreferenceWrapper

AddPreference (Pref As Preference) As Boolean

AddSeekBarDialogPreference (EventName As String, Key As String, Title As String, Summary As String, Default As Int, Min As Int, Max As Int) As SeekBarDialogPreferenceWrapper

AddSeekBarPreference (EventName As String, Key As String, Title As String, Summary As String, Default As Int, Min As Int, Max As Int) As SeekBarPreferenceWrapper

AddSimplePreference (EventName As String, Key As String, Title As String, Summary As String, Default As String) As SimplePreferenceWrapper

AddSwitchPreference (EventName As String, Key As String, Title As String, SummaryOn As String, SummaryOff As String, Default As Boolean) As SwitchPreferenceWrapper

FindPreference (Key As String) As Preference

GetPreference (Index As Int) As Preference

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

RemoveAll

RemovePreference (Pref As Preference)

Properties:

DefaultValue As Object [write only]

Dependency As String

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

Order As Int

Persistent As Boolean

PreferenceCount As Int [read only]

Selectable As Boolean

Summary As String

SummaryTextColor As Int [write only]

Title As String

TitleTextColor As Int [write only]

Visible As Boolean

PreferenceManager
Methods:

ClearAll
Clears all stored entries.

GetAll As Map
Returns a Map with all the Keys and Values. Note that changes to this map will not affect the stored values.

GetBoolean (Key As String) As Boolean
Returns the Boolean value mapped to the given key. Returns False if the key is not found.

GetBoolean2 (Key As String, Default As Boolean) As Boolean
Returns the Boolean value mapped to the given key. Returns the default value if the key is not found.

GetInt (Key As String) As Int

GetInt2 (Key As String, Default As Int) As Int

GetList (Key As String) As List

GetList2 (Key As String, Default As List) As List

GetLong (Key As String) As Long
Returns the Long value mapped to the given key. Returns -1 if the key is not found.

GetLong2 (Key As String, Default As Long) As Long
Returns the Long value mapped to the given key. Returns the default value if the key is not found.

GetString (Key As String) As String
Returns the String value mapped to the given key. Returns an empty string if the key is not found.

GetString2 (Key As String, Default As String) As String
Return the String value mapped to the given key. Returns the default value if the key is not found.

GetUpdatedKeys As List
Returns a list with the keys that were updated since the last call to GetUpdatedKeys.
Note that the updated keys may include keys with unchanged values.

SetBoolean (Key As String, Value As Boolean)
Maps the given key to the given Boolean value.

SetInt (Key As String, Value As Int)

SetList (Key As String, Values As List)
Maps the given key to the given List.

SetLong (Key As String, Value As Long)
Maps the given key to the given Long value.

SetString (Key As String, Value As String)
Maps the given key to the given String value.

PreferenceView
Events:

Ready (Preference As PreferenceView)

Methods:

AddCategory (EventName As String, Key As String, Title As String) As PreferenceCategoryWrapper

AddCheckBoxPreference (EventName As String, Key As String, Title As String, SummaryOn As String, SummaryOff As String, Default As Boolean) As CheckBoxPreferenceWrapper

AddColorPreference (EventName As String, Key As String, Title As String, Summary As String, Default As Int, Colors() As Int, Names() As String) As ColorPreferenceWrapper

AddEditTextPreference (EventName As String, Key As String, Title As String, Summary As String, Default As String) As EditTextPreferenceWrapper

AddListPreference (EventName As String, Key As String, Title As String, Summary As String, Default As String, Values() As String, Texts() As String) As ListPreferenceWrapper

AddMultiSelectListPreference (EventName As String, Key As String, Title As String, Summary As String, Default As List, Values() As String, Texts() As String) As MultiSelectListPreferenceWrapper

AddPreference (Pref As Preference)

AddSeekBarDialogPreference (EventName As String, Key As String, Title As String, Summary As String, Default As Int, Min As Int, Max As Int) As SeekBarDialogPreferenceWrapper

AddSeekBarPreference (EventName As String, Key As String, Title As String, Summary As String, Default As Int, Min As Int, Max As Int) As SeekBarPreferenceWrapper

AddSimplePreference (EventName As String, Key As String, Title As String, Summary As String, Default As String) As SimplePreferenceWrapper

AddSwitchPreference (EventName As String, Key As String, Title As String, SummaryOn As String, SummaryOff As String, Default As Boolean) As SwitchPreferenceWrapper

DesignerCreateView (base As PanelWrapper, lw As LabelWrapper, props As Map)

Initialize (EventName As String, Parent As ViewGroup)

SeekBarDialogPreference

Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

DefaultValue As Object [write only]

Dependency As String

DialogIcon As Drawable

DialogIconTintEnabled As Boolean [write only]

DialogMessage As CharSequence

DialogTitle As CharSequence

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

Max As Int

Min As Int

NegativeButtonText As CharSequence

Order As Int

Persistent As Boolean

PositiveButtonText As CharSequence

Progress As Int

Selectable As Boolean

Summary As String

SummaryTextColor As Int [write only]

Title As String

TitleTextColor As Int [write only]

Visible As Boolean

SeekBarPreference
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

ProgressChanged (Progress As Int, UserChanged As Boolean)

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

Adjustable As Boolean

DefaultValue As Object [write only]

Dependency As String

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Info As CharSequence

Intent As Intent

Key As String

Max As Int

Min As Int

Order As Int

Persistent As Boolean

SeekBarIncrement As Int

Selectable As Boolean

ShowValue As Boolean

Summary As String

SummaryTextColor As Int [write only]

Title As String

TitleTextColor As Int [write only]

Value As Int

Visible As Boolean

SimplePreference
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

PreferenceLongClicked (Preference As Preference))

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

DefaultValue As Object [write only]

Dependency As String

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

Order As Int

Persistent As Boolean

Selectable As Boolean

Summary As String

SummaryTextColor As Int [write only]

Title As String

TitleTextColor As Int [write only]

Visible As Boolean

SwitchPreference
Events:

PreferenceChanged (Preference As Preference, NewValue As Object)

PreferenceClicked (Preference As Preference)

Methods:

Initialize (PreferenceView As PreferenceViewWrapper, EventName As String, Key As String, DefaultValue As Object)
Initializes the object

IsInitialized As Boolean

Properties:

Checked As Boolean

DefaultValue As Object [write only]

Dependency As String

DisableDependentsState As Boolean

Enabled As Boolean

Icon As Drawable

IconPaddingEnabled As Boolean [write only]

IconTintEnabled As Boolean [write only]

Intent As Intent

Key As String

Order As Int

Persistent As Boolean

Selectable As Boolean

Summary As String

SummaryOffText As CharSequence

SummaryOnText As CharSequence

SummaryTextColor As Int [write only]

Title As String

TitleTextColor As Int [write only]

Visible As Boolean

History:
V1.00:

Initial version

V1.01:

Fix: Change packagename to anywheresoftware.b4a.orbjects to reduce resource fields

V1.10:

New: MultiSelectListPreference

V1.11

Fix: Removed DialogMessage property from dialogs with lists (not supported)
Fix: Added missing properties to MultiSelectPreference

V1.12

Fix: PreferenceCategory.AddMultiSelectListPreference() should work now
Fix: AddPreference() should work with all preferences
New: Added RemoveKey() to PreferenceManager
Fix: Remove internal resource files

V1.14

Fix: Fix crash on screen rotation
Fix: Updated to support-preferences library 1.2.7 (fixes crash with ringtone manager on Samsung devices, fixes memory leak)
New: Better support for CharSequences

V2.00

Fix: Updated to support-preferences library 2.2.0 (fixes crashes with support libraries 27)

V3.00

Fix: Should work with androidx support libraries.
Fix: Updated to support-prefernces library 3.0.0dev
Attention: Removed RingtonePreference since it is not supported by androidx support library anymore!

ToDo:

Currently there is nearly no popup help.

Toky Olivier · May 9, 2017

Thank you @corwin42, @Erel have already replied me on this post.

Thank you so much. Very nice library.

wimpie3 · Jun 16, 2017

Is it possible to change the font of the labels?

Pencil3 · Jul 17, 2017

Running into something strange. I added a second Edit.InputType, the first being set to INPUT_TYPE_DECIMAL_NUMBERS and the second set to INPUT_TYPE_DECIMAL_Text. The correct keyboard comes up for both. The EditTextPreference set to INPUT_TYPE_DECIMAL_NUMBERS I can see update in the log. The EditTextPreference set to INPUT_TYPE_DECIMAL_Text does not update in the log. Any ideas?

corwin42 · Jul 17, 2017

It is better to start a new thread in the questions section.

Please provide an example project which shows the problem.

alimanam3386 · Jun 15, 2018

Hi , How can I add an imageView as "imageviewPreference" to PreferenceView ?

http://s9.picofile.com/file/8329263292/photo_2018_06_15_12_26_37.jpg

ernschd · Aug 22, 2019

Thanks for this library.

Is it possible to use divider lines to group together related settings?

Scantech · Sep 7, 2019

After the SDK update this occurs?

B4A Version: 9.50 BETA #1
Java Version: 8
Parsing code. (2.76s)
Building folders structure. (0.25s)
Compiling code. (5.81s)
Compiling layouts code. (0.19s)
Organizing libraries. (0.07s)
(AndroidX SDK)
Generating R file. Error
C:\Android\tools\..\extras\b4a_local\unpacked-support-preference-2.2.0.androidx-63697613842189\res\values\values.xml:137: error: Error: No resource found that matches the given name: attr 'ringtonePreferenceStyle'.

corwin42 · Sep 9, 2019

I can confirm this. I will try to update the original library. Hopefully this will fix the problem. The author says that Version 2.3.2 is compatible with AndroidX. My wrapper still uses 2.2.0.

so27 · Sep 10, 2019

corwin42 said:
I can confirm this. I will try to update the original library. Hopefully this will fix the problem. The author says that Version 2.3.2 is compatible with AndroidX. My wrapper still uses 2.2.0.

Same problem. How can I use this now?

so27 · Sep 10, 2019

In "tools..." I don't have a "b4a_local" Folder. This is only available in the root directory "Extras". Even in an older backup.

Scantech · Sep 11, 2019

so27 said:
How can I use this now?

You can install the command line sdk and resources in different directory. Don't update it in SDK manager. Also make the android.jar path change.

Scantech · Sep 13, 2019

While we are waiting, if you want to update your SDK and want this library to work, then avoid updating Androidx.Preference.Preference

so27 · Sep 17, 2019

Scantech said:
While we are waiting, if you want to update your SDK and want this library to work, then avoid updating Androidx.Preference.Preference

Thanks for the tip. Now I have updated my SDK again after the backup. Great.

Pencil3 · Nov 8, 2019

I too have run into the same issue since the SDK update. Any chance for an update to the library please?

johndb · Nov 9, 2019

Pencil3 said:
I too have run into the same issue since the SDK update. Any chance for an update to the library please?

I too have encountered this issue and would be grateful for an update to this library.

Thank you,

peacemaker · Nov 24, 2019

Any solution ?

corwin42 · Dec 17, 2019

You will find library version 3.0 in the first post which should fix the issue with the latest androidx support library.

I could only fix this issue removing the RingtonePreference. RingtonePreference is not supported anymore in AndroidX libraries. You need to create a custom preference and work with Phone.RingtoneManager to work around this.

Ilya G. · Dec 21, 2019

Good day, I have this error after update B4A 9.50. Library version 3.0

B4X:

main_process_globals (java line: 770)
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/preference/XpPreferenceManager;
    at de.amberhome.preferences.PreferenceManagerWrapper.<init>(PreferenceManagerWrapper.java:21)
    at kz.logist.main._process_globals(main.java:770)
    at kz.logist.main.initializeProcessGlobals(main.java:752)
    at kz.logist.main.afterFirstLayout(main.java:100)
    at kz.logist.main.access$000(main.java:17)
    at kz.logist.main$WaitForLayout.run(main.java:82)
    at android.os.Handler.handleCallback(Handler.java:754)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:163)
    at android.app.ActivityThread.main(ActivityThread.java:6221)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
    at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:107)
Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.preference.XpPreferenceManager" on path: DexPathList[[zip file "/data/app/kz.logist-2/base.apk"],nativeLibraryDirectories=[/data/app/kz.logist-2/lib/arm64, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    ... 14 more

Pencil3 · Dec 21, 2019

You may need to run the Jetifier tool.

GanjaKyp said:

Good day, I have this error after update B4A 9.50. Library version 3.0

B4X:

main_process_globals (java line: 770)
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/preference/XpPreferenceManager;
    at de.amberhome.preferences.PreferenceManagerWrapper.<init>(PreferenceManagerWrapper.java:21)
    at kz.logist.main._process_globals(main.java:770)
    at kz.logist.main.initializeProcessGlobals(main.java:752)
    at kz.logist.main.afterFirstLayout(main.java:100)
    at kz.logist.main.access$000(main.java:17)
    at kz.logist.main$WaitForLayout.run(main.java:82)
    at android.os.Handler.handleCallback(Handler.java:754)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:163)
    at android.app.ActivityThread.main(ActivityThread.java:6221)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
    at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:107)
Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.preference.XpPreferenceManager" on path: DexPathList[[zip file "/data/app/kz.logist-2/base.apk"],nativeLibraryDirectories=[/data/app/kz.logist-2/lib/arm64, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    ... 14 more

Ilya G. · Dec 21, 2019

All done

B4A Library Preferences - Material Design Preferences

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