An Android library that provides a simple and customizable ValuePicker.

• Demo
• Installation
• Usage
• Advanced Usage
• License

1. Make sure that you've added the mavenCentral() repository to your top-level build.gradle file.

buildscript {
    //...
    repositories {
        //...
        mavenCentral()
    }
    //...
}

2. Add the library dependency to your module-level build.gradle file.

dependencies {
    //...
    implementation "com.paulrybitskyi.valuepicker:valuepicker:1.0.3"
    //...
}

Basic usage of the ValuePickerView involves two steps - declaring a widget inside the XML file of your choice and configuring it in one of the Kotlin/Java classes.

Let's see how we can do that by following the steps listed above:

1. Declaring a widget inside the XML file.

   XML (click to expand)

   <?xml version="1.0" encoding="utf-8"?>
   <androidx.constraintlayout.widget.ConstraintLayout
       xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:background="@color/colorPrimary">
   
       <!-- Other widgets here -->
   
       <com.paulrybitskyi.valuepicker.ValuePickerView
           android:id="@+id/valuePickerView"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           app:vpv_areDividersEnabled="true"
           app:vpv_isInfiniteScrollEnabled="true"
           app:vpv_maxVisibleItems="5"
           app:vpv_textColor="@color/colorAccent"
           app:vpv_dividerColor="@color/colorAccent"
           app:vpv_flingSpeedFactor="0.3"
           app:vpv_textSize="@dimen/date_picker_text_size"
           app:vpv_textTypeface="@font/ubuntu_mono_bold"
           app:vpv_divider="@drawable/custom_divider"
           app:vpv_orientation="vertical"/>
   
   </androidx.constraintlayout.widget.ConstraintLayout>

2. Configuring the widget in one of the Kotlin/Java classes.

   Kotlin (click to expand)

   override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
       super.onViewCreated(view, savedInstanceState)
   
       //...
   
       with(valuePickerView) {
           onItemSelectedListener = ValuePickerView.OnItemSelectedListener { item ->
               // Do something with item
           }
   
           val pickerItems = getPickerItems()
   
           items = pickerItems
           setSelectedItem(pickerItems[2])
       }
   }
   
   
   private fun getPickerItems(): List<Item> {
       return mutableListOf<Item>().apply {
           for(number in 1..100) {
               add(
                   PickerItem(
                       id = number,
                       title = number.toString()
                   )
               )
           }
       }
   }

   Java (click to expand)

   @Override
   public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
       super.onViewCreated(view, savedInstanceState);
   
       ValuePickerView valuePickerView = view.findViewById(R.id.valuePickerView);
       valuePickerView.setOnItemSelectedListener((item) -> {
           // Do something with item
       });
   
       final ArrayList<Item> pickerItems = getPickerItems();
   
       valuePickerView.setItems(getPickerItems());
       valuePickerView.setSelectedItem(pickerItems.get(2));
   }
   
   
   private ArrayList<Item> getPickerItems() {
       final ArrayList<Item> pickerItems = new ArrayList<>(100);
   
       for(int i = 1; i <= 100; i++) {
           pickerItems.add(
               new PickerItem(
                   i,
                   String.valueOf(i)
               )
           );
       }
   
       return pickerItems;
   }

See the Sample app.

ValuePicker is licensed under the Apache 2.0 License.