wenzhiming / letterindexbar Goto Github PK

   <?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"
       xmlns:tools="http://schemas.android.com/tools"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       tools:context="com.wzm.sample.MainActivity">

       <androidx.recyclerview.widget.RecyclerView
           android:id="@+id/recycler"
           android:layout_width="match_parent"
           android:layout_height="match_parent" />

       <com.wzm.indexbar.LetterIndexBar
           android:id="@+id/side_bar"
           android:layout_width="50dp"
           android:layout_height="wrap_content"
           app:layout_constraintBottom_toBottomOf="parent"
           app:layout_constraintRight_toRightOf="parent"
           app:layout_constraintTop_toTopOf="parent"
           app:sideItemSpacing="10dp"
           app:sidePressedTextBgColor="@android:color/holo_orange_dark"
           app:sidePressedTextColor="@color/white"
           app:sideTextColor="@color/black"
           app:sideTextSize="14sp" />
   
   
       <TextView
           android:id="@+id/side_hint"
           android:layout_width="60dp"
           android:layout_height="44dp"
           android:layout_gravity="right"
           android:layout_marginRight="20dp"
           android:background="@drawable/bg_side_hint"
           android:backgroundTint="@android:color/holo_orange_dark"
           android:gravity="center"
           android:paddingRight="15dp"
           android:textColor="@color/white"
           android:textSize="20sp"
           android:visibility="gone"
           app:layout_constraintRight_toLeftOf="@id/side_bar"
           app:layout_constraintTop_toTopOf="parent" />
   
   </androidx.constraintlayout.widget.ConstraintLayout>

  side_bar.setLetters(letterArray)
  side_bar.setSideBarListener(object: SideBarView.OnSideBarListener{
            override fun onSideTouchState(sideBarView: SideBarView?, isTouch: Boolean) {
                //根据isTouch判断是否需要显示提示View，具体参考demo
            }

            override fun onSideSelected(
                sideBarView: SideBarView?,
                position: Int,
                currentY: Float,
                selectedValue: String?
            ) {
             //滑动选择成功回调，
             //selectedValue为选中的字符串，position为字符串在letterArray中的位置
             //可根据selectedValue去列表中查找需要滑动的位置（建议在添加数据时，对位置进行缓存，减少查找操作，参考demo）
            }
        })