一、效果图

年月选择器.png

二、思路

其实用的是'cn.aigestudio.wheelpicker:WheelPicker:1.1.3'，可自行百度这个别人写的库，它还能实现很多功能
注：我这个是没联动效果的，它的库其他方法有

三、案例关键代码

xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.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="200dp"
android:background="@color/m_white">


<TextView
    android:id="@+id/cancel"
    android:layout_width="60dp"
    android:layout_height="40dp"
    android:gravity="center"
    android:text="取消"
    android:textColor="@color/color_666666"
    android:textSize="@dimen/m_size_17"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintTop_toTopOf="parent" />


<TextView
    android:id="@+id/ok"
    android:layout_width="60dp"
    android:layout_height="40dp"
    android:gravity="center"
    android:text="确定"
    android:textColor="@color/color_3C76FF"
    android:textSize="@dimen/m_size_17"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />


<View
    android:id="@+id/view_line"
    style="@style/full_under_line"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintTop_toBottomOf="@id/cancel" />


<com.aigestudio.wheelpicker.WheelPicker
    android:id="@+id/mWheelPicker_1"
    android:layout_width="0dp"
    android:layout_height="0dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toLeftOf="@id/mWheelPicker_2"
    app:layout_constraintTop_toBottomOf="@id/view_line"
    android:layout_marginLeft="30dp"
    app:wheel_atmospheric="true"
    app:wheel_curtain_color="@color/m_blue"
    app:wheel_curved="true"
    app:wheel_cyclic="true"
    app:wheel_indicator_color="@color/m_red_one"
    app:wheel_item_text_color="@color/color_919191"
    app:wheel_item_text_size="@dimen/m_size_23"
    app:wheel_selected_item_text_color="@color/color_000000" />


<com.aigestudio.wheelpicker.WheelPicker
    android:id="@+id/mWheelPicker_2"
    android:layout_width="0dp"
    android:layout_height="0dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toRightOf="@id/mWheelPicker_1"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="@id/mWheelPicker_1"
    android:layout_marginRight="30dp"
    app:wheel_atmospheric="true"
    app:wheel_curtain_color="@color/m_blue"
    app:wheel_curved="true"
    app:wheel_cyclic="true"
    app:wheel_indicator_color="@color/m_red_one"
    app:wheel_indicator_size="@dimen/m_size_24"
    app:wheel_item_text_color="@color/color_919191"
    app:wheel_item_text_size="@dimen/m_size_23"
    app:wheel_selected_item_text_color="@color/color_000000" />


</android.support.constraint.ConstraintLayout>

java代码

val CEOYEAR = arrayListOf<String>("2020","2021","2022","2023","2024","2025","2026","2027","2028","2029","2030")
val CEOMONTH= arrayListOf<String>("1","2","3","4","5","6","7","8","9","10","11","12")
val STARTYEAR = arrayListOf<String>("2017","2018","2019","2020","2021","2022","2023","2024","2025","2026","2027")
/**
* @desc : 两个滚动器
* @author : congge on 2020/2/20 17:20
**/
fun showTwoWheelPicker(context:Context,data1: MutableList<String>,data2: MutableList<String>,twoWheelListener: TwoWheelListener?){

    var dialog = getDialog(context)
    val window = dialog.window
    window.setGravity(Gravity.BOTTOM)
    window.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
    window.setContentView(R.layout.dialog_two_wheel)

    val wv1 = window.findViewById<WheelPicker>(R.id.mWheelPicker_1)
    val wv2 = window.findViewById<WheelPicker>(R.id.mWheelPicker_2)

    wv1.data = data1
    wv2.data = data2

    //取消
    window.findViewById<View>(R.id.cancel).setOnClickListener {
        dialog.dismiss()
    }

    //确定
    window.findViewById<View>(R.id.ok).setOnClickListener {
        dialog.dismiss()
        twoWheelListener?.onOk(data1[wv1.currentItemPosition],data2[wv2.currentItemPosition])
    }


}

interface TwoWheelListener {

    fun onOk(str1: String, str2: String)
}

private fun getDialog(context:Context):Dialog{
    return AlertDialog.Builder(context, R.style.mydialog).setCancelable(false).show()
}

四、总结

有更多需求的还是去阅读第三方库