Android应用Google Map API创建的一个根据经纬度定位的程序二

<?xml version="1.0" encoding="utf-8"?>

<resources>

? <drawable name="darkgray">#808080</drawable>

? <drawable name="white">#FFFFFF</drawable>

? <drawable name="blue">#0000FF</drawable>

</resources>

<?xml version="1.0" encoding="utf-8"?>

<resources>

? <string name="hello">Hello World, QueryMapLocation!</string>

? <string name="app_name">QueryMapLocation</string>

? <string name="str_longitude">经度(Longitude)：</string>

? <string name="str_latitude">纬度(Latitude)：</string>

? <string name="str_button1">查询</string>

? <string name="str_button2">+</string>

? <string name="str_button3">-</string>

</resources>

package org.yan;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import com.google.android.maps.GeoPoint;

import com.google.android.maps.MapActivity;

import com.google.android.maps.MapController;

import com.google.android.maps.MapView;

public class QueryMapLocation extends MapActivity {

??????? ? private MapController mMapController01;

??????? ? private MapView mMapView01;

??????? ? private Button mButton01,mButton02,mButton03;

??????? ? private EditText mEditText01;

??????? ? private EditText mEditText02;

??????? ? private int intZoomLevel=0;

??????? ? private double dLat=25.0402555;

??????? ? private double dLng=121.512377;

??????? ? @Override

??????? ? protected void onCreate(Bundle icicle)

??????? ? {

??????? ??? super.onCreate(icicle);

??????? ??? setContentView(R.layout.main);

??????? ??? mMapView01 = (MapView)findViewById(R.id.myMapView1);

??????? ??? mMapController01 = mMapView01.getController();?

??????? ??? mMapView01.setSatellite(false);

??????? ??? mMapView01.setStreetView(true);

??????? ??? intZoomLevel = 10;

??????? ??? mMapController01.setZoom(intZoomLevel);

??????? ??? refreshMapView();

??????? ??? mEditText01 = (EditText)findViewById(R.id.myEdit1);

??????? ??? mEditText02 = (EditText)findViewById(R.id.myEdit2);

??????? ??? mButton01 = (Button)findViewById(R.id.myButton1);

??????? ??? mButton01.setOnClickListener(new Button.OnClickListener()

??????? ??? {

??????? ????? @Override

??????? ????? public void onClick(View v)

??????? ????? {

??????? ??????

??????? ??????? if(mEditText01.getText().toString().equals("")||

??????? ?????????? mEditText02.getText().toString().equals(""))

??????? ??????? {

??????? ????????? showDialog("不能为空");

??????? ??????? }

??????? ??????? else

??????? ??????? {

??????? ????????? dLng=Double.parseDouble(mEditText01.getText().toString());

??????? ????????? dLat=Double.parseDouble(mEditText02.getText().toString());

??????? ????????? refreshMapView();

??????? ??????? }

??????? ????? }

??????? ??? }); ?

??????? ??? mButton02 = (Button)findViewById(R.id.myButton2);

??????? ??? mButton02.setOnClickListener(new Button.OnClickListener()

??????? ??? {

??????? ????? @Override

??????? ????? public void onClick(View v)

??????? ????? {

??????? ??????? intZoomLevel++;

??????? ??????? if(intZoomLevel>mMapView01.getMaxZoomLevel())

??????? ??????? {

??????? ????????? intZoomLevel = mMapView01.getMaxZoomLevel();

??????? ??????? }

??????? ??????? mMapController01.setZoom(intZoomLevel);

??????? ????? }

??????? ??? });?

??????? ??? mButton03 = (Button)findViewById(R.id.myButton3);

??????? ??? mButton03.setOnClickListener(new Button.OnClickListener()

??????? ??? {

??????? ????? @Override

??????? ????? public void onClick(View v)

??????? ????? {

??????? ??????? intZoomLevel--;

??????? ??????? if(intZoomLevel<1)

??????? ??????? {

??????? ????????? intZoomLevel = 1;

??????? ??????? }

??????? ??????? mMapController01.setZoom(intZoomLevel);

??????? ????? }

??????? ??? });

??????? ? }?

??????? ? public void refreshMapView()

??????? ? {

??????? ??? GeoPoint p = new GeoPoint((int)(dLat* 1E6), (int)(dLng* 1E6));

??????? ??? mMapView01.displayZoomControls(true);

??????? ??

??????? ??? mMapController01.animateTo(p);

??????? ??? mMapController01.setZoom(intZoomLevel);

??????? ? }

??????? ??

??????? ? @Override

??????? ? protected boolean isRouteDisplayed()

??????? ? {

??????? ??? return false;

??????? ? }

??????? ? private void showDialog(String mess){

??????? ??? new AlertDialog.Builder(QueryMapLocation.this).setTitle("Message")

??????? ??? .setMessage(mess)

??????? ??? .setNegativeButton("经度纬度请补全", new DialogInterface.OnClickListener()

??????? ??? {

??????? ????? public void onClick(DialogInterface dialog, int which)

??????? ????? {

??????? ????? }

??????? ??? })

??????? ??? .show();

??????? ? }

??????? }

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

????? package="org.yan"

????? android:versionCode="1"

????? android:versionName="1.0">

??? <application android:icon="@drawable/icon" android:label="@string/app_name">

??????? <uses-library? android:name="com.google.android.maps" />

??????? <activity android:name=".QueryMapLocation"

????????????????? android:label="@string/app_name">

??????????? <intent-filter>

??????????????? <action android:name="android.intent.action.MAIN" />

??????????????? <category android:name="android.intent.category.LAUNCHER" />

??????????? </intent-filter>

??????? </activity>

??? </application>

<uses-sdk android:minSdkVersion="4" />

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>

</manifest>