介绍
在开发O2O相关应用的时候,肯定会有定位,选择所在城市,选择地域,然后再向服务器请求该地区的相关数据,这时就需要我们提供一个导向让用户选择所在区域。
看来看去,最终还是选择模仿美团,感觉用户体验最好。
《-美团的地域选择看起来是这样的
原理
1、定位我们可以使用第三方API,例如百度地图,腾讯地图等,官方文档写的非常清楚了。
百度地图地址:http://developer.baidu.com/map/index.php?title=androidsdk,这里不再多述,demo也不涉及定位相关代码。
2、对于RadioButton的布局,之前尝试过使用GridLayout,GridView,但是都无法完美的展示布局效果,最后决定使用LinearLayout+RadioButton动态生成,通过view.getChildCount(),view.getChildAt()循环遍历所有的RadionButton,模拟实现换行的RadioGroup效果。
3、PopupWindow默认情况下窗口后的背景不是黑色透明的,我们可以通过这是窗口的alpha实现
WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = 0.4f; getWindow().setAttributes(lp);
然后在窗口关闭的时候又恢复
mPopuWindow.setOnDismissListener(new OnDismissListener() { // 在dismiss中恢复透明度 public void onDismiss() { WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.alpha = 1f; getWindow().setAttributes(lp); } });
4、自定义RadioButton背景使用xml定义shape即可,然后通过selector定义状态样式。
<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" > <corners android:radius="3dp" /> <solid android:color="#FFFFFF" /> <stroke android:width="1dp" android:color="#cecece" /></shape>
<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/radio_district_p" android:state_checked="true" /> <item android:drawable="@drawable/radio_district_p" android:state_pressed="true"/> <item android:drawable="@drawable/radio_district_n"/></selector>
实现
核心代码
-
-
-
-
- package com.example.popupwindow;
-
- import java.util.ArrayList;
-
- import android.support.v7.app.ActionBarActivity;
- import android.graphics.drawable.ColorDrawable;
- import android.os.Bundle;
- import android.view.LayoutInflater;
- import android.view.Menu;
- import android.view.MenuItem;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.view.WindowManager;
- import android.widget.LinearLayout;
- import android.widget.LinearLayout.LayoutParams;
- import android.widget.PopupWindow;
- import android.widget.PopupWindow.OnDismissListener;
- import android.widget.RadioButton;
- import android.widget.TextView;
-
- public class MainActivity extends ActionBarActivity {
- private PopupWindow mPopuWindow;
- private LinearLayout ll_location;
- private TextView txt_city_d;
-
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- getSupportActionBar().setDisplayShowHomeEnabled(false);
- getSupportActionBar().setDisplayShowCustomEnabled(true);
- getSupportActionBar().setCustomView(R.layout.actionbar);
- txt_city_d = (TextView) getSupportActionBar().getCustomView()
- .findViewById(R.id.txt_city);
-
- mPopuWindow = new PopupWindow(LayoutParams.MATCH_PARENT,
- LayoutParams.WRAP_CONTENT);
- mPopuWindow.setOutsideTouchable(true);
- mPopuWindow.setFocusable(true);
- mPopuWindow.update();
- mPopuWindow.setOnDismissListener(new OnDismissListener() {
-
-
- public void onDismiss() {
- WindowManager.LayoutParams lp = getWindow().getAttributes();
- lp.alpha = 1f;
- getWindow().setAttributes(lp);
- }
- });
-
- ll_location = (LinearLayout) getSupportActionBar().getCustomView()
- .findViewById(R.id.ll_location);
- ll_location.setOnClickListener(new OnClickListener() {
-
- @Override
- public void onClick(View v) {
-
- ColorDrawable cd = new ColorDrawable(0x000000);
- mPopuWindow.setBackgroundDrawable(cd);
-
-
- WindowManager.LayoutParams lp = getWindow().getAttributes();
- lp.alpha = 0.4f;
- getWindow().setAttributes(lp);
- mPopuWindow.showAsDropDown(getSupportActionBar()
- .getCustomView());
- }
- });
-
-
- ArrayList<District> dlist = new ArrayList<District>();
- District d1 = new District();
- d1.setName("青秀区");
- District d2 = new District();
- d2.setName("兴宁区");
- District d3 = new District();
- d3.setName("西乡塘区");
- District d4 = new District();
- d4.setName("江南区");
- District d5 = new District();
- d5.setName("良庆区");
- District d6 = new District();
- d6.setName("近郊");
-
- dlist.add(d1);
- dlist.add(d2);
- dlist.add(d3);
- dlist.add(d4);
- dlist.add(d5);
- dlist.add(d6);
-
- initPopupWindow(dlist);
- }
-
- private void initPopupWindow(ArrayList<District> list) {
- LinearLayout root = (LinearLayout) LayoutInflater.from(
- MainActivity.this).inflate(R.layout.popup_district, null);
-
- ((LinearLayout) root.findViewById(R.id.ll_change_cities))
- .setOnClickListener(new OnClickListener() {
-
- @Override
- public void onClick(View v) {
-
-
-
-
- }
- });
-
- final LinearLayout view = (LinearLayout) root
- .findViewById(R.id.ll_district);
- LinearLayout ll = null;
-
-
- District d = new District();
- d.setName("全城");
- list.add(0, d);
-
-
- for (int i = 0; i < list.size(); i++) {
-
- if (i % 3 == 0) {
- ll = new LinearLayout(MainActivity.this);
- ll.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
- LayoutParams.WRAP_CONTENT));
- ll.setOrientation(LinearLayout.HORIZONTAL);
- view.addView(ll);
- }
-
- District de = list.get(i);
-
-
- View v = LayoutInflater.from(MainActivity.this).inflate(
- R.layout.item_radio_district, null);
- ((RadioButton) v.findViewById(R.id.rb_district)).setText(de
- .getName());
- ((RadioButton) v.findViewById(R.id.rb_district)).setTag(de);
- LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT,
- LayoutParams.MATCH_PARENT);
- lp.weight = 1;
-
-
- if (i == 0) {
- ((RadioButton) v.findViewById(R.id.rb_district))
- .setChecked(true);
- }
- ((RadioButton) v.findViewById(R.id.rb_district))
- .setOnClickListener(new OnClickListener() {
-
- @Override
- public void onClick(View v) {
- RadioButton rb = (RadioButton) v;
-
- if (rb.isChecked()) {
-
-
- for (int i = 0; i < view.getChildCount(); i++) {
- LinearLayout l = (LinearLayout) view
- .getChildAt(i);
- for (int j = 0; j < l.getChildCount(); j++) {
-
- RadioButton b = (RadioButton) ((LinearLayout) ((LinearLayout) l
- .getChildAt(j)).getChildAt(0))
- .getChildAt(0);
- b.setChecked(false);
- }
- }
- }
-
- rb.setChecked(true);
-
-
- District d = (District) rb.getTag();
- txt_city_d.setText("南宁" + "-" + d.getName());
- mPopuWindow.dismiss();
- }
- });
- ll.addView(v, lp);
- }
-
-
- for (int i = list.size() % 3; i < 3 && i != 0; i++) {
- District dd = list.get(i);
- View v = LayoutInflater.from(MainActivity.this).inflate(
- R.layout.item_radio_district, null);
- ((RadioButton) v.findViewById(R.id.rb_district)).setText(dd
- .getName());
- ((RadioButton) v.findViewById(R.id.rb_district))
- .setVisibility(View.INVISIBLE);
- LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT,
- LayoutParams.MATCH_PARENT);
- lp.weight = 1;
- ll.addView(v, lp);
- }
- mPopuWindow.setContentView(root);
- mPopuWindow.update();
- }
-
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {
-
- getMenuInflater().inflate(R.menu.main, menu);
- return true;
- }
-
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
-
-
-
- int id = item.getItemId();
- if (id == R.id.action_settings) {
- return true;
- }
- return super.onOptionsItemSelected(item);
- }
- }
Demo看起来是这样的
demo下载地址:
链接:http://pan.baidu.com/s/1mg5NrlA 密码:d6ii
介绍如何实现带有首字母的快速索引list,进行城市选择,我也是参考了相关博文才弄出来的,知道了原理,才发现如此简单。
其中有个开源项目可以参考,但与本文实现的方式略有不同。
地址:https://github.com/woozzu/IndexableListView
美团的城市选择看起来是这样的。本例中不包含搜索,有空再模仿研究下。
原理
1、侧边快速索引和首字母直接在framelayout中布局的,也可以用代码动态生成。
2、获取拼音首字写用到了pinyin4j开源库,但是这样效率低下,可以考虑数据库字段冗余拼音等方式提高效率。
3、使用Comparator对获取首字母的列表进行了排序。
4、按下快速索引之后,使用Listview.setSelectionFromTop进行定位。
实现
activity_city_list.xml布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="match_parent" android:background="#ffffff" android:orientation="vertical" > <FrameLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="#ffffff" > <ListView android:id="@+id/listView1" android:layout_width="match_parent" android:layout_height="wrap_content" > </ListView> <!-- 选中索引时,屏幕中间显示的大写字母 --> <TextView android:id="@+id/tv" android:layout_width="60dp" android:layout_height="60dp" android:layout_gravity="center" android:background="#aaffffff" android:gravity="center" android:text="A" android:textColor="#aa000000" android:textSize="30sp" /> <!-- 右侧快速索引列表 --> <LinearLayout android:id="@+id/layout" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_gravity="right" android:layout_marginBottom="3dp" android:layout_marginLeft="3dp" android:layout_marginTop="3dp" android:background="#d7d7d7" android:gravity="center" android:orientation="vertical" > </LinearLayout> </FrameLayout></LinearLayout>
item_city.xml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="wrap_content" android:orientation="vertical" > <!-- 列表中的index首字母,之后第一个首字母下的item显示,其他隐藏 --> <TextView android:id="@+id/tv_index" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="#777777" android:paddingBottom="2dp" android:paddingLeft="10dp" android:paddingTop="2dp" android:text="index" android:textColor="#ffffff" /> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:paddingBottom="10dp" android:paddingLeft="10dp" android:paddingTop="10dp" > <TextView android:id="@+id/tv1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:text="城市" /> </LinearLayout></LinearLayout>
CityListAdapter
-
-
-
-
- package com.example.popupwindow;
-
- import java.util.HashMap;
- import java.util.List;
- import java.util.Map;
-
- import android.content.Context;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.BaseAdapter;
- import android.widget.ImageView;
- import android.widget.TextView;
-
- public class CityListAdapter extends BaseAdapter {
- private Context ctx;
- private ViewHolder holder;
- List<CityListItem> list;
- Map<String, Integer> selector;
- String index[];
-
- public CityListAdapter(Context context, List<CityListItem> list, String[] index) {
- this.ctx = context;
- this.list = list;
- this.index = index;
- selector = new HashMap<String, Integer>();
-
- for (int j = 0; j < index.length; j++) {
- for (int i = 0; i < list.size(); i++) {
-
- if (list.get(i).getIndex().equals(index[j].toLowerCase())) {
- selector.put(index[j], i);
- break;
- }
- }
- }
- }
-
- @Override
- public int getCount() {
-
- return list.size();
- }
-
- @Override
- public Object getItem(int arg0) {
-
- return list.get(arg0);
- }
-
- @Override
- public long getItemId(int position) {
-
- return 0;
- }
-
- @Override
- public View getView(int position, View convertView, ViewGroup parent) {
- try {
- if (convertView == null) {
- holder = new ViewHolder();
- convertView = LayoutInflater.from(ctx).inflate(R.layout.item_city, null);
- holder.tv1 = (TextView) convertView.findViewById(R.id.tv1);
- holder.index = (TextView) convertView.findViewById(R.id.tv_index);
- convertView.setTag(holder);
- } else {
- holder = (ViewHolder) convertView.getTag();
- }
-
- CityListItem item = list.get(position);
- holder.tv1.setText(item.getName());
-
-
- String currentStr = item.getIndex();
-
- String previewStr = (position - 1) >= 0 ? list.get(position - 1).getIndex() : " ";
-
-
- if (!previewStr.equals(currentStr)) {
- holder.index.setVisibility(View.VISIBLE);
- holder.index.setText(currentStr);
- } else {
- holder.index.setVisibility(View.GONE);
- }
- } catch (OutOfMemoryError e) {
- Runtime.getRuntime().gc();
- } catch (Exception ex) {
- ex.printStackTrace();
- }
- return convertView;
- }
-
- class ViewHolder {
- TextView tv1;
- TextView index;
- }
-
- public Map<String, Integer> getSelector() {
- return selector;
- }
-
- public void setSelector(Map<String, Integer> selector) {
- this.selector = selector;
- }
-
- public String[] getIndex() {
- return index;
- }
-
- public void setIndex(String[] index) {
- this.index = index;
- }
- }
CitiesActivity-
-
-
-
- package com.example.popupwindow;
-
- import java.text.Collator;
- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.Comparator;
- import java.util.List;
-
- import android.graphics.Color;
- import android.os.Bundle;
- import android.support.v7.app.ActionBarActivity;
- import android.view.MenuItem;
- import android.view.MotionEvent;
- import android.view.View;
- import android.view.View.OnTouchListener;
- import android.widget.LinearLayout;
- import android.widget.LinearLayout.LayoutParams;
- import android.widget.ListView;
- import android.widget.TextView;
-
- public class CitiesActivity extends ActionBarActivity {
- LinearLayout layoutIndex;
-
- private String[] str_index = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q","R","S","T"
- ,"U", "V", "W", "X", "Y", "Z" };
-
- private int height;
- private List<CityListItem> listData;
- private ListView listView;
- private CityListAdapter adapter;
- private TextView tv_show;
-
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
-
- getSupportActionBar().setTitle("城市列表");
- getSupportActionBar().setDisplayHomeAsUpEnabled(true);
- getSupportActionBar().setHomeButtonEnabled(true);
-
- setContentView(R.layout.activity_city_list);
- layoutIndex = (LinearLayout) this.findViewById(R.id.layout);
- layoutIndex.setBackgroundColor(Color.parseColor("#00ffffff"));
-
- getData();
-
- tv_show = (TextView) findViewById(R.id.tv);
- tv_show.setVisibility(View.INVISIBLE);
-
- }
-
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
- switch (item.getItemId()) {
- case android.R.id.home:
- finish();
- return true;
- }
- return false;
- }
-
-
-
-
- public void getData() {
- CityListItem ci1=new CityListItem();
- ci1.setName("北京");
- CityListItem ci2=new CityListItem();
- ci2.setName("上海");
- CityListItem ci3=new CityListItem();
- ci3.setName("广州");
- CityListItem ci4=new CityListItem();
- ci4.setName("广西");
- CityListItem ci5=new CityListItem();
- ci5.setName("长沙");
- CityListItem ci6=new CityListItem();
- ci6.setName("贵阳");
- CityListItem ci7=new CityListItem();
- ci7.setName("福建");
-
- ArrayList<CityListItem> list=new ArrayList<CityListItem>();
- list.add(ci1);
- list.add(ci1);
- list.add(ci1);
- list.add(ci1);
- list.add(ci1);
- list.add(ci1);
- list.add(ci2);list.add(ci2);list.add(ci2);list.add(ci2);list.add(ci2);list.add(ci2);
- list.add(ci3);list.add(ci3);list.add(ci3);list.add(ci3);list.add(ci3);
- list.add(ci4);list.add(ci4);list.add(ci4);list.add(ci4);list.add(ci4);
- list.add(ci5); list.add(ci5); list.add(ci5); list.add(ci5);
- list.add(ci6);list.add(ci6);list.add(ci6);list.add(ci6);
- list.add(ci7);list.add(ci7);list.add(ci7);list.add(ci7);
-
-
- for (CityListItem cityListItem : list) {
- cityListItem.setIndex(String.valueOf(ChineseUtils.getHanyuPinyin(cityListItem.getName())
- .charAt(0)));
- }
-
- LetterComparator lc = new LetterComparator();
- Collections.sort(list, lc);
-
- listView = (ListView) findViewById(R.id.listView1);
- adapter = new CityListAdapter(CitiesActivity.this, list, str_index);
- listView.setAdapter(adapter);
-
- }
-
- @Override
- public void onWindowFocusChanged(boolean hasFocus) {
-
-
-
- height = layoutIndex.getHeight() / str_index.length;
- getIndexView();
- }
-
-
- public void getIndexView() {
- LinearLayout.LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, height);
-
- for (int i = 0; i < str_index.length; i++) {
- final TextView tv = new TextView(this);
- tv.setLayoutParams(params);
- tv.setText(str_index[i]);
- tv.setPadding(10, 0, 10, 0);
- layoutIndex.addView(tv);
- layoutIndex.setOnTouchListener(new OnTouchListener() {
-
- @Override
- public boolean onTouch(View v, MotionEvent event)
-
- {
- float y = event.getY();
- int index = (int) (y / height);
- if (index > -1 && index < str_index.length) {
- String key = str_index[index];
- if (adapter.getSelector().containsKey(key)) {
-
- int pos = adapter.getSelector().get(key);
- if (listView.getHeaderViewsCount() > 0) {
- listView.setSelectionFromTop(pos + listView.getHeaderViewsCount(), 0);
- } else {
- listView.setSelectionFromTop(pos, 0);
- }
- tv_show.setVisibility(View.VISIBLE);
- tv_show.setText(str_index[index]);
- }
- }
- switch (event.getAction()) {
- case MotionEvent.ACTION_DOWN:
-
- layoutIndex.setBackgroundColor(Color.parseColor("#aaffffff"));
- break;
-
- case MotionEvent.ACTION_MOVE:
-
- break;
- case MotionEvent.ACTION_UP:
-
- layoutIndex.setBackgroundColor(Color.parseColor("#00ffffff"));
- tv_show.setVisibility(View.INVISIBLE);
- break;
- }
- return true;
- }
- });
- }
- }
-
- private class LetterComparator implements Comparator<CityListItem> {
-
- @Override
- public int compare(CityListItem lhs, CityListItem rhs) {
- return Collator.getInstance().compare(lhs.getIndex(), rhs.getIndex());
- }
- }
- }
最后看起来应该是这样的
链接:http://pan.baidu.com/s/1o6keEKE 密码:ssbn
上面附件的备份下载地址:
http://download.csdn.net/detail/jdsjlzx/9070539
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