先看下利用wheelview实现滚动随机选择号码效果：

直接上代码

首页就是dialog显示不在描述
主要看dialog代码

package com.yskj.jh.wheeldemo;import android.app.Dialog;import android.content.Context;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;import com.yskj.jh.wheeldemo.wheel.adapters.AbstractWheelTextAdapter;import com.yskj.jh.wheeldemo.wheel.views.OnWheelChangedListener;import com.yskj.jh.wheeldemo.wheel.views.OnWheelScrollListener;import com.yskj.jh.wheeldemo.wheel.views.WheelView;import java.util.ArrayList;import java.util.List;/** * Created by Administrator on 2016/4/7. */public class SnatchDialog extends Dialog implements View.OnClickListener, OnWheelChangedListener { private Context context; private TextView tvNumberL, tvNumberC, tvNumberR; //数字控件 private WheelView wvLeft; private WheelView wvCenter; private WheelView wvRight; //数字集合 private List<String> list = new ArrayList<String>(); //选中的数字信息 private String strLeft; private String strCenter; private String strRight = "1"; private TextView btnSure;//确定按钮 private ImageView btnCancle;//取消按钮 private TextView btnRandom;//随机 //回调函数 private OnSnatchCListener onSnatchCListener; private NumberAdapter adapter; //显示文字的字体大小 private int maxsize = 26; private int minsize = 18; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.dialog_snatch); initView(); } public SnatchDialog(Context context){ super(context, R.style.ShareDialog); this.context = context; } private void initView() { tvNumberL = (TextView) findViewById(R.id.tv_number1); tvNumberC = (TextView) findViewById(R.id.tv_number2); tvNumberR = (TextView) findViewById(R.id.tv_number3); for (int i = 0; i < 10; i++) { list.add(i + ""); } wvLeft = (WheelView) findViewById(R.id.wv_snatch_left); wvCenter = (WheelView) findViewById(R.id.wv_snatch_center); wvRight = (WheelView) findViewById(R.id.wv_snatch_right); btnSure = (TextView) findViewById(R.id.tv_sure); btnCancle = (ImageView) findViewById(R.id.img_cancel); btnRandom = (TextView) findViewById(R.id.tv_random); btnSure.setOnClickListener(this); btnCancle.setOnClickListener(this); btnRandom.setOnClickListener(this); wvLeft.addChangingListener(this); wvCenter.addChangingListener(this); wvRight.addChangingListener(this); wvLeft.setCyclic(true); wvRight.setCyclic(true); wvCenter.setCyclic(true); wvLeft.setVisibleItems(3); wvCenter.setVisibleItems(3); wvRight.setVisibleItems(3); wvLeft.addScrollingListener(new OnWheelScrollListener() { @Override public void onScrollingStarted(WheelView wheel) { } @Override public void onScrollingFinished(WheelView wheel) { String currentText = (String) adapter.getItemText(wheel.getCurrentItem()); strLeft = (String) adapter.getItemObject(wheel.getCurrentItem()); setTextViewSize(strLeft, adapter); tvNumberL.setText(strLeft); } }); wvCenter.addScrollingListener(new OnWheelScrollListener() { @Override public void onScrollingStarted(WheelView wheel) { } @Override public void onScrollingFinished(WheelView wheel) { String currentText = (String) adapter.getItemText(wheel.getCurrentItem()); strCenter = (String) adapter.getItemObject(wheel.getCurrentItem()); setTextViewSize(strCenter, adapter); tvNumberC.setText(strCenter); } }); wvRight.addScrollingListener(new OnWheelScrollListener() { @Override public void onScrollingStarted(WheelView wheel) { } @Override public void onScrollingFinished(WheelView wheel) { String currentText = (String) adapter.getItemText(wheel.getCurrentItem()); strRight = (String) adapter.getItemObject(wheel.getCurrentItem()); setTextViewSize(strRight, adapter); tvNumberR.setText(strRight); } }); /** * 设置适配器 */ adapter = new NumberAdapter(context, list, 0, maxsize, minsize); wvLeft.setViewAdapter(adapter); wvLeft.setCurrentItem(0); wvCenter.setViewAdapter(adapter); wvCenter.setCurrentItem(0); wvRight.setViewAdapter(adapter); wvRight.setCurrentItem(1); } @Override public void onChanged(WheelView wheel, int oldValue, int newValue) { } public interface OnSnatchCListener { void onClick(String strLeft, String strCenter, String strRight); } @Override public void onClick(View v) { if (v == btnSure) { if (onSnatchCListener != null) { onSnatchCListener.onClick(strLeft, strCenter, strRight); } if (strLeft == null) { strLeft = "0"; } if (strCenter == null) { strCenter = "0"; } if (strRight == null) { strRight = "0"; } if ((strLeft + strCenter + strRight).equals("000")) { Toast.makeText(context, "不能为0", Toast.LENGTH_SHORT).show(); } else { if (Integer.parseInt(strLeft + strCenter + strRight) > 0 && Integer.parseInt(strLeft + strCenter + strRight) <= 999) { } } } if (v == btnCancle) { dismiss(); } if (v == btnRandom) { int a = (int) (Math.random() * 5000 + 1); int b = (int) (Math.random() * 5000 + 1); int c = (int) (Math.random() * 5000 + 1); wvLeft.scroll(a, 500); wvRight.scroll(b, 500); wvCenter.scroll(c, 500); } } //适配器 public class NumberAdapter extends AbstractWheelTextAdapter { List<String> list; protected NumberAdapter(Context context, List<String> list, int currentItem, int maxsize, int minsize) { super(context, R.layout.item_birth_year, NO_RESOURCE, currentItem, maxsize, minsize); this.list = list; setItemTextResource(R.id.tempValue); } @Override public View getItem(int index, View cachedView, ViewGroup parent) { View view = super.getItem(index, cachedView, parent); return view; } @Override protected CharSequence getItemText(int index) { if (list != null && list.size() > 0) { return list.get(index); } return ""; } @Override protected Object getItemObject(int index) { if (list != null && list.size() > 0) { return list.get(index); } return null; } @Override public int getItemsCount() { if (list != null) { return list.size(); } return 0; } } public void setTextViewSize(String curriteItemText, NumberAdapter adapter) { ArrayList<View> arrayList = adapter.getTestViews(); int size = arrayList.size(); String currentText; for (int i = 0; i < size; i++) { TextView textview = (TextView) arrayList.get(i); currentText = textview.getText().toString(); if (curriteItemText.equals(currentText)) { textview.setTextSize(maxsize); } else { textview.setTextSize(minsize); } } } public void setOnSnatchCListener(OnSnatchCListener onSnatchCListener) { this.onSnatchCListener = onSnatchCListener; }}

布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="385dp" android:layout_marginBottom="5dp" android:layout_marginLeft="5dp" android:layout_marginRight="5dp" android:background="#00000000" android:gravity="bottom" android:layout_gravity="bottom" android:orientation="vertical"> <LinearLayout android:id="@+id/ly_myinfo_changeaddress_child" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/address_edit_delete_ensure_bg" android:orientation="vertical" > <FrameLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <TextView android:layout_width="match_parent" android:layout_height="45dp" android:gravity="center" android:textSize="16sp" android:textColor="#7a7a7c" android:text="选择幸运号" /> <ImageView android:id="@+id/img_cancel" android:layout_width="16dp" android:layout_height="16dp" android:layout_gravity="right|center" android:layout_marginRight="17dp" android:clickable="true" android:src="@mipmap/cha" /> </FrameLayout> <View android:layout_width="match_parent" android:layout_height="1dp" android:background="#f5f5f5" /> <LinearLayout android:layout_width="match_parent" android:layout_height="110dp" android:gravity="center_vertical" android:orientation="horizontal"> <com.yskj.jh.wheeldemo.wheel.views.WheelView android:id="@+id/wv_snatch_left" android:layout_width="0dp" android:layout_height="match_parent" android:layout_gravity="center_vertical" android:layout_weight="1" /> <com.yskj.jh.wheeldemo.wheel.views.WheelView android:id="@+id/wv_snatch_center" android:layout_width="0dp" android:layout_height="match_parent" android:layout_gravity="center_vertical" android:layout_weight="1" /> <com.yskj.jh.wheeldemo.wheel.views.WheelView android:id="@+id/wv_snatch_right" android:layout_width="0dp" android:layout_height="match_parent" android:layout_gravity="center_vertical" android:layout_weight="1" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:orientation="horizontal"> <TextView android:id="@+id/tv_number" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="当前选中的号码是: " android:textColor="#faa701" android:textSize="11sp"/> <TextView android:id="@+id/tv_number1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textColor="#faa701" android:text="0"/> <TextView android:id="@+id/tv_number2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textColor="#faa701" android:text="0"/> <TextView android:id="@+id/tv_number3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textColor="#faa701" android:text="1"/> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/tv_random" android:layout_width="0dp" android:layout_height="27dp" android:layout_weight="1" android:layout_margin="10dp" android:background="@drawable/round_corner_blue" android:gravity="center" android:text="我要随机选号" android:clickable="true" android:textSize="13sp" android:textColor="#45a3f3" /> <TextView android:id="@+id/tv_sure" android:layout_width="0dp" android:layout_height="27dp" android:layout_weight="1" android:layout_margin="10dp" android:background="@drawable/round_corner_blue_btn" android:gravity="center" android:clickable="true" android:text="确定" android:textSize="15sp" android:textColor="#ffffff" /> </LinearLayout> </LinearLayout> </LinearLayout></LinearLayout>

源码下载：http://xiazai.jb51.net/201612/yuanma/AndroidWheelDemo(jb51.net).rar

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