Android自定义wheelview随机选号效果

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

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。