開發過程中，年月的選擇功能還是比較常見的，像這種功能點比較常見，要是每次都要自己手動去寫，這無疑會耗費比較多的時間與精力，今天給大家介紹一個第三方庫，使用該庫來完成年月選擇器功能。

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: 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: android:layout_width='60dp' android:layout_height='40dp' android:gravity='center' android:text='確定' android:textColor='#3C76FF' android:textSize='17sp' app:layout_constraintRight_toRightOf='parent' app:layout_constraintTop_toTopOf='parent' /> <View android: 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: 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: 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、添加數據

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、設置選擇器彈出框

/** * @desc : 兩個滾動器 **/ 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(); } }); //確定 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、設置彈出框dialog樣式

<!--圓角的dialog樣式--> <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、設置點擊事件彈出

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、總結

這個第三方庫我這里只是做了簡單的介紹，還有更多需求的還是去閱讀第三方庫。

第三方庫地址：

https://github.com/AigeStudio/WheelPicker

到這里就結束啦。

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