Android联动选择时间和地址

一晃离上次写博客差不多都过了半年了，现在工作中用到了一些实用的东西，想和大家分享一下。

现在实现的是一个基于开源项目WheelView的时间、地址联动选择的对话框，先看看效果图，文章末尾有源码下载地址：

选择时间：

选择地点：

因为项目中要实现如图上的效果，无奈WheelView的默认没有，所以就修改了一点其中的代码和风格，就实现了这种效果。

步骤如下：

1、要实现选中字体变大，所以就得得到显示文字的TextView的引用，所以这里在源代码“AbstractWheelTextAdapter”中添加了记录显示文字的TextView的集合、字体的最小显示、最大显示值以及记录当前选中条目的索引：

 <span style="white-space:pre">    </span>private int currentIndex = 0;
     private static int maxsize = 24;
     private static int minsize = 14;
     private ArrayList<View> arrayList = new ArrayList<View>();

构造函数也随之改为了：

 <span style="white-space:pre">    </span>protected AbstractWheelTextAdapter(Context context, int itemResource) {
         this(context, itemResource, NO_RESOURCE, 0, maxsize, minsize);
     }

 <pre name="code" class="java"><span style="white-space:pre">    </span>protected AbstractWheelTextAdapter(Context context, int itemResource, int itemTextResource, int currentIndex,
             int maxsize, int minsize) {
         this.context = context;
         itemResourceId = itemResource;
         itemTextResourceId = itemTextResource;
         this.currentIndex = currentIndex;
         this.maxsize = maxsize;
         this.minsize = minsize;

         inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     }

其中currentIndex为初始化时选中字体变大的item的索引。

getView函数改为了：

 <span style="white-space:pre">    </span>@Override
     public View getItem(int index, View convertView, ViewGroup parent) {
         if (index >= 0 && index < getItemsCount()) {
             if (convertView == null) {
                 convertView = getView(itemResourceId, parent);
             }
             TextView textView = getTextView(convertView, itemTextResourceId);
             if (!arrayList.contains(textView)) { //保存显示文字的TextView的引用，方便在外部调用
                 arrayList.add(textView);
             }
             if (textView != null) {
                 CharSequence text = getItemText(index);
                 if (text == null) {
                     text = "";
                 }
                 textView.setText(text);

                 if (index == currentIndex) {  //把当前选中item字体改大，其余的变小
                     textView.setTextSize(maxsize);
                 } else {
                     textView.setTextSize(minsize);
                 }

                 if (itemResourceId == TEXT_VIEW_ITEM_RESOURCE) {
                     configureTextView(textView);
                 }
             }
             return convertView;
         }
         return null;
     }

这样Adapter就修改完了。

2、样式的修改：

在WheelView中修改渐变颜色，中部为白色，向两边慢慢变暗

 /** Top and bottom shadows colors */
     private static final int[] SHADOWS_COLORS = new int[] { 0xeeffffff, 0xeaffffff, 0x33ffffff };

wheel_val.xml文件改为了

 <shape xmlns:android="http://schemas.android.com/apk/res/android">
     <gradient
         android:startColor="#22ffffff"
         android:centerColor="#00ffffff"
         android:endColor="#22ffffff"
         android:angle="90" />
 </shape>

wheel_bg.xml改为了空

 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
 </layer-list>

就实现了图片中的效果，这样对源码的修改就完成了。

3、选择时间对话框的实现，代码如下：

布局：

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/ly_myinfo_changebirth"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="#00000000"
     android:gravity="center"
     android:orientation="vertical" >

     <LinearLayout
         android:id="@+id/ly_myinfo_changebirth_child"
         android:layout_width="300dip"
         android:layout_height="wrap_content"
         android:layout_marginLeft="27dip"
         android:layout_marginRight="27dip"
         android:background="@drawable/bg_dialog_selector"
         android:orientation="vertical" >

         <TextView
             android:id="@+id/tv_share_title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginBottom="14dip"
             android:layout_marginLeft="18dip"
             android:layout_marginTop="18dip"
             android:gravity="center_vertical"
             android:text="选择日期"
             android:textColor="#000000"
             android:textSize="18sp" />
         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="160dip"
             android:orientation="horizontal"
             android:layout_marginLeft="20dip"
             android:layout_marginRight="20dip"
             android:gravity="center_vertical">
             <com.ywl5320.pickaddress.wheel.widget.views.WheelView
                 android:id="@+id/wv_birth_year"
                 android:layout_width="0dip"
                 android:layout_weight="1"
                 android:layout_height="match_parent"
                 android:layout_gravity="center_vertical"
                 />
             <com.ywl5320.pickaddress.wheel.widget.views.WheelView
                 android:id="@+id/wv_birth_month"
                 android:layout_width="0dip"
                 android:layout_weight="1"
                 android:layout_height="match_parent"
                 android:layout_gravity="center_vertical"
                 />
             <com.ywl5320.pickaddress.wheel.widget.views.WheelView
                 android:id="@+id/wv_birth_day"
                 android:layout_width="0dip"
                 android:layout_weight="1"
                 android:layout_height="match_parent"
                 android:layout_gravity="center_vertical"
                 />
         </LinearLayout>
         <RelativeLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginTop="25dip"
             android:layout_marginBottom="21dip">

                 <TextView
                     android:id="@+id/btn_myinfo_sure"
                     android:layout_width="77dip"
                     android:layout_height="33dip"
                     android:layout_alignParentRight="true"
                     android:layout_marginRight="15dip"
                     android:text="确认"
                     android:gravity="center"
                     android:textSize="16sp" />


                 <TextView
                     android:id="@+id/btn_myinfo_cancel"
                     android:layout_width="77dip"
                     android:layout_height="33dip"
                     android:layout_toLeftOf="@+id/btn_myinfo_sure"
                     android:text="取消"
                     android:gravity="center"
                     android:textSize="16sp" />
         </RelativeLayout>
     </LinearLayout>

 </LinearLayout>

对话框style：

 <style name="ShareDialog" parent="@android:Theme.Dialog">
         <item name="android:windowBackground">@android:color/transparent</item>
         <item name="android:windowFrame">@null</item>
         <item name="android:windowNoTitle">true</item>
         <item name="android:windowIsFloating">false</item>
         <item name="android:windowIsTranslucent">true</item>
         <item name="android:windowContentOverlay">@null</item>
         <item name="android:backgroundDimEnabled">true</item>
     </style>

对话框源码：

 package com.ywl5320.pickaddress;

 import java.util.ArrayList;
 import java.util.Calendar;

 import android.app.Dialog;
 import android.content.Context;
 import android.os.Bundle;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;

 import com.ywl5320.pickaddress.wheel.widget.adapters.AbstractWheelTextAdapter;
 import com.ywl5320.pickaddress.wheel.widget.views.OnWheelChangedListener;
 import com.ywl5320.pickaddress.wheel.widget.views.OnWheelScrollListener;
 import com.ywl5320.pickaddress.wheel.widget.views.WheelView;

 /**
  * 日期选择对话框
  *
  * @author ywl
  *
  */
 public class ChangeBirthDialog extends Dialog implements android.view.View.OnClickListener {

     private Context context;
     private WheelView wvYear;
     private WheelView wvMonth;
     private WheelView wvDay;

     private View vChangeBirth;
     private View vChangeBirthChild;
     private TextView btnSure;
     private TextView btnCancel;

     private ArrayList<String> arry_years = new ArrayList<String>();
     private ArrayList<String> arry_months = new ArrayList<String>();
     private ArrayList<String> arry_days = new ArrayList<String>();
     private CalendarTextAdapter mYearAdapter;
     private CalendarTextAdapter mMonthAdapter;
     private CalendarTextAdapter mDaydapter;

     private int month; //选中当前年有几个月
     private int day; //选中当前月有几天（分了闰年的）

     private int currentYear = getYear(); //得到当前年份
     private int currentMonth = 1;
     private int currentDay = 1;

     private int maxTextSize = 24; //字体最大值
     private int minTextSize = 14; //字体最小值

     private boolean issetdata = false; //判断是否设置了默认时间，没有就设置为当前时间

     private String selectYear; //选中的年
     private String selectMonth; //选中的月
     private String selectDay; //选中的日

     private OnBirthListener onBirthListener;

     public ChangeBirthDialog(Context context) {
         super(context, R.style.ShareDialog);
         this.context = context;
     }

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.dialog_myinfo_changebirth);
         wvYear = (WheelView) findViewById(R.id.wv_birth_year);
         wvMonth = (WheelView) findViewById(R.id.wv_birth_month);
         wvDay = (WheelView) findViewById(R.id.wv_birth_day);

         vChangeBirth = findViewById(R.id.ly_myinfo_changebirth);
         vChangeBirthChild = findViewById(R.id.ly_myinfo_changebirth_child);
         btnSure = (TextView) findViewById(R.id.btn_myinfo_sure);
         btnCancel = (TextView) findViewById(R.id.btn_myinfo_cancel);

         vChangeBirth.setOnClickListener(this);
         vChangeBirthChild.setOnClickListener(this);
         btnSure.setOnClickListener(this);
         btnCancel.setOnClickListener(this);

         if (!issetdata) {
             initData();
         }
         initYears();

 <span style="white-space:pre">        </span>//初始化年，显示可见条目数量，年份集合，当前设置年份、<span style="font-family: Arial, Helvetica, sans-serif;">字体大小</span>
         mYearAdapter = new CalendarTextAdapter(context, arry_years, setYear(currentYear), maxTextSize, minTextSize);

 <span style="white-space:pre">        </span>//可见5条
         wvYear.setVisibleItems(5);

 <span style="white-space:pre">        </span>//设置适配器
         wvYear.setViewAdapter(mYearAdapter);

 <span style="white-space:pre">        </span>//根据当前传入的年份，设置显示年份
         wvYear.setCurrentItem(setYear(currentYear));

         initMonths(month);
         mMonthAdapter = new CalendarTextAdapter(context, arry_months, setMonth(currentMonth), maxTextSize, minTextSize);
         wvMonth.setVisibleItems(5);
         wvMonth.setViewAdapter(mMonthAdapter);
         wvMonth.setCurrentItem(setMonth(currentMonth));

         initDays(day);
         mDaydapter = new CalendarTextAdapter(context, arry_days, currentDay - 1, maxTextSize, minTextSize);
         wvDay.setVisibleItems(5);
         wvDay.setViewAdapter(mDaydapter);
         wvDay.setCurrentItem(currentDay - 1);

 <span style="white-space:pre">        </span>//为年份选中添加change事件，根据选中年份，联动设置月份
         wvYear.addChangingListener(new OnWheelChangedListener() {

             @Override
             public void onChanged(WheelView wheel, int oldValue, int newValue) {
                 // TODO Auto-generated method stub
                 String currentText = (String) mYearAdapter.getItemText(wheel.getCurrentItem());
                 selectYear = currentText;
                 setTextviewSize(currentText, mYearAdapter);
                 currentYear = Integer.parseInt(currentText);
                 setYear(currentYear);
                 initMonths(month);
                 mMonthAdapter = new CalendarTextAdapter(context, arry_months, 0, maxTextSize, minTextSize);
                 wvMonth.setVisibleItems(5);
                 wvMonth.setViewAdapter(mMonthAdapter);
                 wvMonth.setCurrentItem(0);
             }
         });

 <span style="white-space:pre">        </span>//添加滚动事件，调用adapter中的显示文字集合来改变字体大小
         wvYear.addScrollingListener(new OnWheelScrollListener() {

             @Override
             public void onScrollingStarted(WheelView wheel) {
                 // TODO Auto-generated method stub

             }

             @Override
             public void onScrollingFinished(WheelView wheel) {
                 // TODO Auto-generated method stub
                 String currentText = (String) mYearAdapter.getItemText(wheel.getCurrentItem());
                 setTextviewSize(currentText, mYearAdapter);
             }
         });

         wvMonth.addChangingListener(new OnWheelChangedListener() {

             @Override
             public void onChanged(WheelView wheel, int oldValue, int newValue) {
                 // TODO Auto-generated method stub
                 String currentText = (String) mMonthAdapter.getItemText(wheel.getCurrentItem());
                 selectMonth = currentText;
                 setTextviewSize(currentText, mMonthAdapter);
                 setMonth(Integer.parseInt(currentText));
                 initDays(day);
                 mDaydapter = new CalendarTextAdapter(context, arry_days, 0, maxTextSize, minTextSize);
                 wvDay.setVisibleItems(5);
                 wvDay.setViewAdapter(mDaydapter);
                 wvDay.setCurrentItem(0);
             }
         });

         wvMonth.addScrollingListener(new OnWheelScrollListener() {

             @Override
             public void onScrollingStarted(WheelView wheel) {
                 // TODO Auto-generated method stub

             }

             @Override
             public void onScrollingFinished(WheelView wheel) {
                 // TODO Auto-generated method stub
                 String currentText = (String) mMonthAdapter.getItemText(wheel.getCurrentItem());
                 setTextviewSize(currentText, mMonthAdapter);
             }
         });

         wvDay.addChangingListener(new OnWheelChangedListener() {

             @Override
             public void onChanged(WheelView wheel, int oldValue, int newValue) {
                 // TODO Auto-generated method stub
                 String currentText = (String) mDaydapter.getItemText(wheel.getCurrentItem());
                 setTextviewSize(currentText, mDaydapter);
                 selectDay = currentText;
             }
         });

         wvDay.addScrollingListener(new OnWheelScrollListener() {

             @Override
             public void onScrollingStarted(WheelView wheel) {
                 // TODO Auto-generated method stub

             }

             @Override
             public void onScrollingFinished(WheelView wheel) {
                 // TODO Auto-generated method stub
                 String currentText = (String) mDaydapter.getItemText(wheel.getCurrentItem());
                 setTextviewSize(currentText, mDaydapter);
             }
         });

     }
 <span style="white-space:pre">    </span>

 <span style="white-space:pre">    </span>//初始化年份，可以把1950设置为一个变量，方便动态设置
     public void initYears() {
         for (int i = getYear(); i > 1950; i--) {
             arry_years.add(i + "");
         }
     }
 <span style="white-space:pre">    </span>//初始化月份
     public void initMonths(int months) {
         arry_months.clear();
         for (int i = 1; i <= months; i++) {
             arry_months.add(i + "");
         }
     }
 <span style="white-space:pre">    </span>//出事话天日
     public void initDays(int days) {
         arry_days.clear();
         for (int i = 1; i <= days; i++) {
             arry_days.add(i + "");
         }
     }

     private class CalendarTextAdapter extends AbstractWheelTextAdapter {
         ArrayList<String> list;

         protected CalendarTextAdapter(Context context, ArrayList<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
         public int getItemsCount() {
             return list.size();
         }

         @Override
         protected CharSequence getItemText(int index) {
             return list.get(index) + "";
         }
     }

 <span style="white-space:pre">    </span>//暴露给activity的回调借口，用于获取选择的结果
     public void setBirthdayListener(OnBirthListener onBirthListener) {
         this.onBirthListener = onBirthListener;
     }

     @Override
     public void onClick(View v) {

         if (v == btnSure) {
             if (onBirthListener != null) {
                 onBirthListener.onClick(selectYear, selectMonth, selectDay);
             }
         } else if (v == btnSure) {

         } else if (v == vChangeBirthChild) {
             return;
         } else {
             dismiss();
         }
         dismiss();

     }

     public interface OnBirthListener {
         public void onClick(String year, String month, String day);
     }

     /**
      * 设置字体大小
      *
      * @param curriteItemText
      * @param adapter
      */
     public void setTextviewSize(String curriteItemText, CalendarTextAdapter adapter) {
         ArrayList<View> arrayList = adapter.getTestViews();
         int size = arrayList.size();
         String currentText;
         for (int i = 0; i < size; i++) {
             TextView textvew = (TextView) arrayList.get(i);
             currentText = textvew.getText().toString();
             if (curriteItemText.equals(currentText)) {
                 textvew.setTextSize(maxTextSize);
             } else {
                 textvew.setTextSize(minTextSize);
             }
         }
     }

     public int getYear() {
         Calendar c = Calendar.getInstance();
         return c.get(Calendar.YEAR);
     }

     public int getMonth() {
         Calendar c = Calendar.getInstance();
         return c.get(Calendar.MONTH) + 1;
     }

     public int getDay() {
         Calendar c = Calendar.getInstance();
         return c.get(Calendar.DATE);
     }

     public void initData() {
         setDate(getYear(), getMonth(), getDay());
         this.currentDay = 1;
         this.currentMonth = 1;
     }

     /**
      * 设置年月日
      *
      * @param year
      * @param month
      * @param day
      */
     public void setDate(int year, int month, int day) {
         selectYear = year + "";
         selectMonth = month + "";
         selectDay = day + "";
         issetdata = true;
         this.currentYear = year;
         this.currentMonth = month;
         this.currentDay = day;
         if (year == getYear()) {
             this.month = getMonth();
         } else {
             this.month = 12;
         }
         calDays(year, month);
     }

     /**
      * 设置年份
      *
      * @param year
      */
     public int setYear(int year) {
         int yearIndex = 0;
         if (year != getYear()) {
             this.month = 12;
         } else {
             this.month = getMonth();
         }
         for (int i = getYear(); i > 1950; i--) {
             if (i == year) {
                 return yearIndex;
             }
             yearIndex++;
         }
         return yearIndex;
     }

     /**
      * 设置月份
      *
      * @param year
      * @param month
      * @return
      */
     public int setMonth(int month) {
         int monthIndex = 0;
         calDays(currentYear, month);
         for (int i = 1; i < this.month; i++) {
             if (month == i) {
                 return monthIndex;
             } else {
                 monthIndex++;
             }
         }
         return monthIndex;
     }

     /**
      * 计算每月多少天
      *
      * @param month
      * @param leayyear
      */
     public void calDays(int year, int month) {
         boolean leayyear = false;
         if (year % 4 == 0 && year % 100 != 0) {
             leayyear = true;
         } else {
             leayyear = false;
         }
         for (int i = 1; i <= 12; i++) {
             switch (month) {
             case 1:
             case 3:
             case 5:
             case 7:
             case 8:
             case 10:
             case 12:
                 this.day = 31;
                 break;
             case 2:
                 if (leayyear) {
                     this.day = 29;
                 } else {
                     this.day = 28;
                 }
                 break;
             case 4:
             case 6:
             case 9:
             case 11:
                 this.day = 30;
                 break;
             }
         }
         if (year == getYear() && month == getMonth()) {
             this.day = getDay();
         }
     }
 }
 http://download.csdn.net/detail/ywl5320/8545059