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