CursorWheelLayout is an Android library that allows view to be placed on a rotatable wheel. It behaves like a Circular ListView where items rotate rather than scroll vertically. CursorWheelLayout consists of two components , the center item with id id_wheel_menu_center_item and the menu items that provided by CycleWheelAdapter.

The CursorWheelLayout can be used as a way to select one item from a list. The wheelSelectedAngle attribute determines what position on the wheel is selected. You can also receive a callback for when an item is clicked, and whether it is selected. Have a look at the sample for a working example!

Download Demo here

compile 'github.hellocsl:CursorWheelLayout:1.0.0'

<dependency>
  <groupId>github.hellocsl</groupId>
  <artifactId>CursorWheelLayout</artifactId>
  <version>1.0.0</version>
  <type>pom</type>
</dependency>

1. Add a custom view in Xml

  <github.hellocsl.cursorwheel.CursorWheelLayout
        android:id="@+id/test_circle_menu_right"
        android:layout_width="306dip"
        android:layout_height="306dip"
        android:layout_gravity="center_vertical|right|bottom"
        android:layout_marginBottom="-153dp"
        android:layout_marginRight="-153dip"
        app:wheelBackgroundColor="@color/colorAccent_Translucent"
        app:wheelCursorColor="@color/red"
        app:wheelCursorHeight="20dip"
        app:wheelFlingValue="460"
        app:wheelSelectedAngle="225">

        <github.hellocsl.cursorwheellayout.widget.SwitchButton
            android:id="@id/id_wheel_menu_center_item"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:boardWidth="0dip"
            app:uncheckRevealColor="#ff2a2f36"
        />
    </github.hellocsl.cursorwheel.CursorWheelLayout>

2. Define your WheelCycleAdapter

public class SimpleTextAdapter implements CursorWheelLayout.CycleWheelAdapter{

        public int getCount(){
        //...
        }

        public View getView(View parent, int position){
        //...
        }

        public Object getItem(int position){
        //...
        }

}

3. Set your WheelCycleAdapter similar to how you would set an adapter with a ListView

        SimpleTextAdapter simpleTextAdapter = new SimpleTextAdapter(this, menuItemDatas);
        mTestCircleMenuLeft.setAdapter(simpleTextAdapter);

1. A listener for when the closest item to the SelectionAngle changes.

      mTestCircleMenuTop.setOnMenuSelectedListener(new CursorWheelLayout.OnMenuSelectedListener() {
            @Override
            public void onItemSelected(CursorWheelLayout parent, View view, int pos) {
                Toast.makeText(MainActivity.this, "Top Menu selected position:" + pos, Toast.LENGTH_SHORT).show();
            }
        });

2. A listener for when an item is clicked.

        mTestCircleMenuTop.setOnMenuItemClickListener(new CursorWheelLayout.OnMenuItemClickListener() {
            @Override
            public void onItemClick(View view, int pos) {
                Toast.makeText(MainActivity.this, "Top Menu click position:" + pos, Toast.LENGTH_SHORT).show();

            }
        });

Here are the custom attributes that can be declared in xml:

• wheelSelectedAngle
• wheelPaddingRadio
• wheelCenterRadio
• wheelItemRadio
• wheelFlingValue
• wheelCursorHeight
• wheelCursorColor
• wheelBackgroundColor

https://blog.csdn.net/lmj623565791/article/details/43131133

Apache License Version 2.0 https://apache.org/licenses/LICENSE-2.0.txt