Android MapView简单使用

夏嘉德
2023-12-01

1. 首先先要获取你的debug keystore位置:

打开Eclipse--->Windows---> preferences--->Android--->Build
查看默认的debug keystore位置,我的是C:\Documents and Settings\Administrator\.android\debug.keystore

2.
C:\Program Files\Java\jdk1.6.0_04\jre\bin>keytool -list -alias androiddebugkey -keystore "C:\Documents and Settings\Administrator\.android\debug.keystore" -storepass android -keypass android
androiddebugkey, 2009-7-25, PrivateKeyEntry,
认证指纹 (MD5): DA:D5:6E:C2:80:D1:0F:0D:F8:2A:58:6A:74:7C:CE:2D

3.
   打开http://code.google.com/intl/zh-CN/android/maps-api-signup.html

填入你的认证指纹(MD5)即可获得apiKey了,结果显示如下:
         感谢您注册 Android 地图 API 密钥!

            您的密钥是:

       XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

4.       使用得到的apiKey:

              在layout中加入MapView
              <com.google.android.maps.MapView
                      android:id="@+id/mapview"
                      android:layout_width="fill_parent"
                      android:layout_height="fill_parent"
                      android:apiKey="0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g" />

  或者

  <view android:id="@+id/mv"
   class="com.google.android.maps.MapView"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:layout_weight="1" 
   android:apiKey="0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g" 
   />

5.Android在sdk1.5的预装的add-on中提供了一个Map扩展库com.google.android.maps,利用它你就可以给你的android应用程序增加上强大的地图功能了。这个库的位置在Your-SDK_DIR\add-ons\google_apis-3\libs.
一定要在manifest.xml中设置全相应的权限,比如:

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.INTERNET" /> 
要在manifest.xml中加上要用的maps库:

<manifest xmlns:android="http://schemas.android.com/apk/res/android
package="com.example.package.name"> 
  ... 
  <application android:name="MyApplication" > 
    <uses-library android:name="com.google.android.maps" /> 
    ... 
  </application> 
  ... 
</manifest>

需要说明的是这个库不是标准的android sdk的内容,你也可以自己从这里这里下载并放到你的sdk里面。

Maps库分析


Maps库提供了十几个类,具体可以参考这里http://code.google.com/intl/ja/android/add-ons/google-apis/reference/index.html,  包括Mapview,MapController,MapActivity等。

 

Mapview是用来显示地图的view, 它也是派生自android.view.ViewGroup。

地图可以以不同的形式来显示出来,如街景模式,卫星模式等,具体方法可以参考:

setSatellite(boolean), setTraffic(boolean), and setStreetView(boolean)

 

MapView只能被MapActivity来创建,这是因为mapview需要通过后台的线程来连接网络或者文件系统,而这些线程要由mapActivity来管理。


需要特别说明的一点是,android 1.5中,map的zoom采用了built-in机制,可以通过setBuiltInZoomControls(boolean)来设置是否在地图上显示zoom控件。


MapActivity是一个抽象类,任何想要显示MapView的activity都需要派生自MapActivity。并且在其派生类的onCreate()中,都要创建一个MapView实例,可以通过MapView constructor (then add it to a layout View with ViewGroup.addView(View)) 或者通过layout XML来创建。

 

实例分析


最后,按照惯例,还是用一个小程序来演示一下android中地图功能的开发。主要功能是实现了地图的缩放,添加了菜单,从而可以手动选择地图的显示模式等。

Step 1: 新建一个android project, 注意这里要选择的build target为"Google APIs"


Step 2: 修改menifest文件:

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android
      package="com.map.prac" 
      android:versionCode="1" 
      android:versionName="1.0"> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
    <uses-permission android:name="android.permission.INTERNET" /> 
    <application android:icon="@drawable/icon" android:label="@string/app_name"> 
    <uses-library android:name="com.google.android.maps" /> 
        <activity android:name=".MapViewPrac2" 
                  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="3" /> 
</manifest>


Step 3: 修改layout文件,main.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android
    android:id="@+id/main" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 
    <com.google.android.maps.MapView 
        android:id="@+id/map" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:enabled="true" 
        android:clickable="true" 
        android:apiKey="???????????????????????????????????" 
        /> 
</LinearLayout> 
这里需要将api key中的????????????改成你自己申请到的api key.

 


Step 4: 修改代码:

package com.map.prac; 
import com.google.android.maps.GeoPoint; 
import com.google.android.maps.MapActivity; 
import com.google.android.maps.MapController; 
import com.google.android.maps.MapView; 
import android.app.AlertDialog; 
import android.app.Dialog; 
import android.content.DialogInterface; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.KeyEvent; 
import android.view.Menu; 
import android.view.MenuItem; 
public class MapViewPrac2 extends MapActivity { 
    private final String TAG = "MapPrac"; 
    private MapView mapView = null; 
    private MapController mc; 
    //Menu items 
    final private int menuMode = Menu.FIRST; 
    final private int menuExit = Menu.FIRST+1; 
    final private int menuCommandList = Menu.FIRST + 2; 
    private int chooseItem = 0; 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
        mapView = (MapView)findViewById(R.id.map); 
        mc = mapView.getController(); 
        mapView.setTraffic(true); // 
        mapView.setSatellite(false); 
        mapView.setStreetView(true); 
        //GeoPoint gp = new GeoPoint((int)(39.269259 * 1000000), (int)(115.255762 * 1000000));//yixian 
        GeoPoint gp = new GeoPoint((int)(39.95 * 1000000), (int)(116.37 * 1000000));//beijing 
        //mc.animateTo(gp); 
        //mc.setZoom(12); 
        mc.setCenter(gp); 
        //to display zoom control in MapView 
        mapView.setBuiltInZoomControls(true); 
    } 
    @Override 
    public boolean onKeyDown(int keyCode, KeyEvent event) { 
        // TODO Auto-generated method stub 
        Log.i(TAG,"enter onKeyDown"); 
        return super.onKeyDown(keyCode, event); 
    } 
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
        menu.add(0, menuMode, 0, "Map Mode"); 
        menu.add(0, menuCommandList, 1, "Command List"); 
        menu.add(0, menuExit, 2, "Exit"); 
        return super.onCreateOptionsMenu(menu); 
    } 
    @Override 
    public boolean onMenuItemSelected(int featureId, MenuItem item) { 
        // TODO Auto-generated method stub 
        switch(item.getItemId()) 
        { 
        case menuMode: 
            Dialog dMode = new AlertDialog.Builder(this) 
            //.setIcon(R.drawable.alert_dialog_icon) 
            .setTitle(R.string.alert_dialog_single_choice) 
            .setSingleChoiceItems(R.array.select_dialog_items2, chooseItem, new DialogInterface.OnClickListener() { 
                public void onClick(DialogInterface dialog, int whichButton) { 
                    Log.i(TAG, "choose button is "+ whichButton); 
                    chooseItem = whichButton; 
                    /* User clicked on a radio button do some stuff */ 
                } 
            }) 
            .setPositiveButton(R.string.alert_dialog_ok, new DialogInterface.OnClickListener() { 
                public void onClick(DialogInterface dialog, int whichButton) { 
                    /* User clicked Yes so do some stuff */ 
                    Log.i(TAG,"item = "+chooseItem); 
                    switch(chooseItem) 
                    { 
                    case 0: 
                        mapView.setSatellite(false); 
                        break; 
                    case 1: 
                        mapView.setSatellite(true); 
                        break; 
                    case 2: 
                        mapView.setTraffic(true); 
                        break; 
                    case 3: 
                        mapView.setStreetView(true); 
                        break; 
                    default: 
                        break; 
                    } 
                } 
            }) 
            .setNegativeButton(R.string.alert_dialog_cancel, new DialogInterface.OnClickListener() { 
                public void onClick(DialogInterface dialog, int whichButton) { 
                    /* User clicked No so do some stuff */ 
                } 
            }) 
           .create(); 
            dMode.show(); 
            break; 
        case menuCommandList: 
            //create the dialog 
            Dialog d = new AlertDialog.Builder(this) 
            .setTitle(R.string.select_dialog) 
            .setItems(R.array.select_dialog_items, new DialogInterface.OnClickListener() { 
                public void onClick(DialogInterface dialog, int which) { 
                    /* User clicked so do some stuff */ 
                    String[] items = getResources().getStringArray(R.array.select_dialog_items); 
                    /*new AlertDialog.Builder(this) 
                            .setMessage("You selected: " + which + " , " + items[which]) 
                            .show();*/ 
                    Log.i(TAG,"you choose is: " + items[which]); 
                } 
            }) 
            .create(); 
            //show the dialog 
            d.show(); 
            break; 
        case menuExit: 
            finish(); 
            break; 
        default: 
                break; 
        } 
        return super.onMenuItemSelected(featureId, item); 
    } 
    @Override 
    protected boolean isRouteDisplayed() { 
        // TODO Auto-generated method stub 
        return false; 
    } 
}

 类似资料: