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;
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);
}
});
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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