Android——高德地图地点搜索框

效果图

首先

实现效果如图。由于搜索采用的是高德地图搜索 SDK 所以需要到高德地图开发者注册账号获取到 appKey

注册成功进入个人中心创建对应的应用

build.gradle

创建项目，导入 gradle

// 高德地图
compile 'com.amap.api:search:latest.integration'

配置好 AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="zqx.rj.com.gdplacesearch"><!--网络权限--><uses-permission android:name="android.permission.INTERNET" /><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><activity android:name=".InputTipsActivity"/><!-- 高德地图 key --><meta-dataandroid:name="com.amap.api.v2.apikey"android:value="你自己的 appkey" /></application></manifest>

先写 MainActivity.xml 布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><Buttonandroid:id="@+id/btn_search"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="搜索框"/><TextViewandroid:id="@+id/tv_place"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="地点："android:layout_margin="10dp"/></LinearLayout>

MainActivity

package zqx.rj.com.gdplacesearch;import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;import com.amap.api.services.help.Tip;/*** author：  HyZhan* created：2018/9/20 15:06* desc：    TODO*/public class MainActivity extends AppCompatActivity {private TextView mTvPlace;private static final int REQUEST_PLACE = 1;@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button mBtnSearch = findViewById(R.id.btn_search);mBtnSearch.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(MainActivity.this, InputTipsActivity.class);startActivityForResult(intent, REQUEST_PLACE);}});mTvPlace = findViewById(R.id.tv_place);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if (requestCode == REQUEST_PLACE) {if (resultCode == InputTipsActivity.RESULT_CODE_INPUTTIPS && data != null) {final Tip tip = data.getParcelableExtra("tip");if (tip.getName() != null) {mTvPlace.setText("选择地点是：" + tip.getName());}}}}
}

初始化相应控件，当点击了搜索框按钮跳转到 InputTipsActivity。
onActivityResult 处理当用户点击地点的时候回调（也就是点击 ListView item 回调）
并显示选择地点显示到 TextView 上，我这里只显示选择地点，想要获取更多显示信息可以在 Tip 中获取

然后

然后写 ListView 适配器 InputTipsAdapter 和对应 adapter_inputtips.xml 文件

<?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="match_parent"android:orientation="vertical"android:paddingBottom="10dp"android:paddingLeft="10dp"android:paddingTop="10dp"android:background="@android:color/white"><TextViewandroid:id="@+id/name"android:layout_width="match_parent"android:layout_height="wrap_content"android:textColor="#000"android:textSize="15sp"android:textStyle="bold"/><TextViewandroid:id="@+id/address"android:layout_width="match_parent"android:layout_height="wrap_content"android:textColor="#000"android:textSize="12sp"/></LinearLayout>

简单的两个 TextView 控件第一个控件显示地点，第二个显示详细地址

package zqx.rj.com.gdplacesearch;import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;import com.amap.api.services.help.Tip;import java.util.List;/***  输入提示adapter，展示item名称和地址*/
public class InputTipsAdapter extends BaseAdapter {private Context mContext;private List<Tip> mListTips;InputTipsAdapter(Context context, List<Tip> tipList) {mContext = context;mListTips = tipList;}@Overridepublic int getCount() {if (mListTips != null) {return mListTips.size();}return 0;}@Overridepublic Object getItem(int i) {if (mListTips != null) {return mListTips.get(i);}return null;}@Overridepublic long getItemId(int i) {return i;}@Overridepublic View getView(int i, View view, ViewGroup viewGroup) {Holder holder;if (view == null) {holder = new Holder();view = LayoutInflater.from(mContext).inflate(R.layout.adapter_inputtips, null);holder.mName =  view.findViewById(R.id.name);holder.mAddress =  view.findViewById(R.id.address);view.setTag(holder);} else{holder = (Holder)view.getTag();}if(mListTips == null){return view;}holder.mName.setText(mListTips.get(i).getName());String address = mListTips.get(i).getAddress();if(address == null || address.equals("")){holder.mAddress.setVisibility(View.GONE);}else{holder.mAddress.setVisibility(View.VISIBLE);holder.mAddress.setText(address);}return view;}class Holder {TextView mName;TextView mAddress;}
}

Tip 这个 bean 存储的是地点相关信息
这里也是简单初始化控件、复用 ViewHolder 应该大家都看得懂吧~
接下来是 activity_input_tips.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@android:color/white"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="48dp"android:background="@android:color/white"android:orientation="horizontal"><android.support.v7.widget.SearchViewandroid:id="@+id/keyWord"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:imeOptions="actionSearch"android:inputType="textCapWords"android:singleLine="true"android:textColor="@android:color/white"android:textColorHint="@android:color/white"app:queryHint="请输入上车地点"app:searchIcon="@null" /></LinearLayout><ListViewandroid:id="@+id/inputtip_list"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginTop="5dp"></ListView></LinearLayout>

这里引用了 SearchView 控件（搜索框），ListView 显示相对于搜索结果。

InputTipsActivity

package zqx.rj.com.gdplacesearch;import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.SearchView;
import android.text.TextUtils;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;import com.amap.api.services.help.Inputtips;
import com.amap.api.services.help.InputtipsQuery;
import com.amap.api.services.help.Tip;import java.util.List;public class InputTipsActivity extends AppCompatActivity implements SearchView.OnQueryTextListener,Inputtips.InputtipsListener, OnItemClickListener {private ListView mInputListView;private List<Tip> mCurrentTipList;private InputTipsAdapter mIntipAdapter;public static String DEFAULT_CITY = "北京";public static final int RESULT_CODE_INPUTTIPS = 101;public static final int REQUEST_SUC = 1000;@Overrideprotected void onCreate(Bundle savedInstanceState) {setContentView(R.layout.activity_input_tips);super.onCreate(savedInstanceState);initSearchView();mInputListView = findViewById(R.id.inputtip_list);mInputListView.setOnItemClickListener(this);}private void initSearchView() {SearchView searchView = findViewById(R.id.keyWord);searchView.setOnQueryTextListener(this);//设置SearchView默认为展开显示searchView.setIconified(false);searchView.onActionViewExpanded();searchView.setIconifiedByDefault(true);searchView.setSubmitButtonEnabled(false);}/*** 输入提示回调*/@Overridepublic void onGetInputtips(List<Tip> tipList, int rCode) {// 正确返回if (rCode == REQUEST_SUC) {mCurrentTipList = tipList;mIntipAdapter = new InputTipsAdapter(getApplicationContext(), mCurrentTipList);mInputListView.setAdapter(mIntipAdapter);mIntipAdapter.notifyDataSetChanged();} else {Toast.makeText(this, "错误码 :" + rCode, Toast.LENGTH_SHORT).show();}}@Overridepublic void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {if (mCurrentTipList != null) {Tip tip = (Tip) adapterView.getItemAtPosition(i);Intent intent = new Intent();intent.putExtra("tip", tip);setResult(RESULT_CODE_INPUTTIPS, intent);this.finish();}}/*** 按下确认键触发，本例为键盘回车或搜索键*/@Overridepublic boolean onQueryTextSubmit(String query) {return false;}/*** 输入字符变化时触发*/@Overridepublic boolean onQueryTextChange(String newText) {if (!TextUtils.isEmpty(newText)) {InputtipsQuery inputquery = new InputtipsQuery(newText, DEFAULT_CITY);Inputtips inputTips = new Inputtips(InputTipsActivity.this, inputquery);inputTips.setInputtipsListener(this);inputTips.requestInputtipsAsyn();} else {// 如果输入为空  则清除 listView 数据if (mIntipAdapter != null && mCurrentTipList != null) {mCurrentTipList.clear();mIntipAdapter.notifyDataSetChanged();}}return true;}}

onQueryTextChange() 当输入相关字符触发，如果输入不为空的话，创建搜索对象并设置监听，异步请求搜索地点。
onGetInputtips() 方法是搜索结果回调，根据返回状态码判断 1000 表示搜索成功，其他错误，参考官网错误码对照表
onItemClick() 获取当前点击 position 回调 MainActivity

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感谢阅读，下次再见。