Android如何实现年月选择器功能

开发过程中，年月的选择功能还是比较常见的，像这种功能点比较常见，要是每次都要自己手动去写，这无疑会耗费比较多的时间与精力，今天给大家介绍一个第三方库，使用该库来完成年月选择器功能。

一、效果图

二、实现步骤：

1、依赖库

implementation 'cn.aigestudio.wheelpicker:WheelPicker:1.1.3'

2、xml布局文件

<?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="#ffffff">

 <TextView
  android:id="@+id/cancel"
  android:layout_width="60dp"
  android:layout_height="40dp"
  android:gravity="center"
  android:text="取消"
  android:textColor="#666666"
  android:textSize="17sp"
  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="#3C76FF"
  android:textSize="17sp"
  app:layout_constraintRight_toRightOf="parent"
  app:layout_constraintTop_toTopOf="parent" />

 <View
  android:id="@+id/view_line"
  android:layout_width="match_parent"
  android:layout_height="1dp"
  android:background="#e5e5e5"
  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"
  android:layout_marginLeft="30dp"
  app:layout_constraintBottom_toBottomOf="parent"
  app:layout_constraintLeft_toLeftOf="parent"
  app:layout_constraintRight_toLeftOf="@id/mWheelPicker_2"
  app:layout_constraintTop_toBottomOf="@id/view_line"
  app:wheel_atmospheric="true"
  app:wheel_curtain_color="#1886F7"
  app:wheel_curved="true"
  app:wheel_cyclic="true"
  app:wheel_indicator_color="#e5e5e5"
  app:wheel_item_text_color="#919191"
  app:wheel_item_text_size="23sp"
  app:wheel_selected_item_text_color="#000000" />

 <com.aigestudio.wheelpicker.WheelPicker
  android:id="@+id/mWheelPicker_2"
  android:layout_width="0dp"
  android:layout_height="0dp"
  android:layout_marginRight="30dp"
  app:layout_constraintBottom_toBottomOf="parent"
  app:layout_constraintLeft_toRightOf="@id/mWheelPicker_1"
  app:layout_constraintRight_toRightOf="parent"
  app:layout_constraintTop_toTopOf="@id/mWheelPicker_1"
  app:wheel_atmospheric="true"
  app:wheel_curtain_color="#1886F7"
  app:wheel_curved="true"
  app:wheel_cyclic="true"
  app:wheel_indicator_color="#e5e5e5"
  app:wheel_indicator_size="24sp"
  app:wheel_item_text_color="#919191"
  app:wheel_item_text_size="23sp"
  app:wheel_selected_item_text_color="#000000" />

</android.support.constraint.ConstraintLayout>

3、添加数据

 List<String> CEOYEAR = new ArrayList<>();
 List<String> CEOMONTH = new ArrayList<>();

 for (int i = 2000; i < 2051; i++) {
     CEOYEAR.add(i + "");
  }

 for (int i = 1; i < 13; i++) {
  CEOMONTH.add(i + "");
 }

4、设置选择器弹出框

 /**
  * @desc : 两个滚动器
  **/
 private void showTwoWheelPicker(Context context, final List<String> data1, final List<String> data2, final TwoWheelListener mTwoWheelListener) {

  final Dialog dialog = getDialog(context);
  Window window = dialog.getWindow();
  window.setGravity(Gravity.BOTTOM);
  window.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
  window.setContentView(R.layout.fragment_sami);

  final WheelPicker wv1 = window.findViewById(R.id.mWheelPicker_1);
  final WheelPicker wv2 = window.findViewById(R.id.mWheelPicker_2);

  wv1.setData(data1);
  wv2.setData(data2);

  //取消
  window.findViewById(R.id.cancel).setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    dialog.dismiss();
   }
  });

  //确定
  window.findViewById(R.id.ok).setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    dialog.dismiss();

    if (mTwoWheelListener != null) {
     mTwoWheelListener.onOk(data1.get(wv1.getCurrentItemPosition()), data2.get(wv2.getCurrentItemPosition()));
    }
   }
  });
 }

 private Dialog getDialog(Context context) {

  return new AlertDialog.Builder(context, R.style.RoundCornerDialog).setCancelable(false).show();
 }

 private TwoWheelListener mTwoWheelListener = null;

 public static interface TwoWheelListener {
  void onOk(String str1, String str2);
 }

5、设置弹出框dialog样式

 <!--圆角的dialog样式-->
 <style name="RoundCornerDialog" parent="@android:style/Theme.Dialog">
  <item name="android:windowFrame">@null</item>
  <item name="android:windowIsFloating">true</item>
  <item name="android:windowIsTranslucent">true</item>
  <item name="android:windowNoTitle">true</item>
  <item name="android:background">@android:color/transparent</item>
  <item name="android:windowBackground">@android:color/transparent</item>
  <item name="android:backgroundDimEnabled">true</item>
  <item name="android:backgroundDimAmount">0.6</item>
</style>

6、设置点击事件弹出

 findViewById(R.id.btn).setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    showTwoWheelPicker(AppBarLayoutActivity.this, CEOYEAR, CEOMONTH, new TwoWheelListener() {
     @Override
     public void onOk(String str1, String str2) {
      Toast.makeText(AppBarLayoutActivity.this, str1 + "年" + str2 + "日", Toast.LENGTH_SHORT).show();
     }
    });
   }
  });

四、总结

这个第三方库我这里只是做了简单的介绍，还有更多需求的还是去阅读第三方库。

第三方库地址：

https://github.com/AigeStudio/WheelPicker

到这里就结束啦。

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