1. 首先先要獲取妳的debug keystore位置:
打開Eclipse--->Windows---> preferences--->Android--->Build
查看默認的debug keystore位置,我的是C:\Documents and Settings\sdhbk\.android\debug.keystore
2.
D:\android-sdk-windows-1.5_r1\tools>keytool -list -alias androiddebugkey -keysto
re "C:\Documents and Settings\sdhbk\.android\debug.keystore" -storepass android
-keypass android
androiddebugkey, 2009-7-25, PrivateKeyEntry,
認證指紋 (MD5): DA:D5:6E:C2:80:D1:0F:0D:F8:2A:58:6A:74:7C:CE:2D
3.
打開
填入妳的認證指紋(MD5)即可獲得apiKey了,結果顯示如下:
感謝您註冊 Android 地圖 API 密鑰!
您的密鑰是:
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的預裝的add-on中提供了壹個Map擴展庫com.google.android.maps,利用它妳就可以給妳的android應用程序增加上強大的地圖功能了。這個庫的位置在Your-SDK_DIR\add-ons\google_apis-3\libs.
壹定要在manifest.xml中設置全相應的權限,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庫:
<manifest xmlns:android=""
package="com.example.package.name">
...
<application android:name="MyApplication" >
<uses-library android:name="com.google.android.maps" />
...
</application>
...
</manifest>
需要說明的是這個庫不是標準的android sdk的內容,妳也可以自己從這裏這裏下載並放到妳的sdk裏面。
Maps庫分析
Maps庫提供了十幾個類,具體可以參考這裏, 包括Mapview,MapController,MapActivity等。
Mapview是用來顯示地圖的view, 它也是派生自android.view.ViewGroup。
地圖可以以不同的形式來顯示出來,如街景模式,衛星模式等,具體方法可以參考:
setSatellite(boolean), setTraffic(boolean), and setStreetView(boolean)
MapView只能被MapActivity來創建,這是因為mapview需要通過後臺的線程來連接網絡或者文件系統,而這些線程要由mapActivity來管理。
需要特別說明的壹點是,android 1.5中,map的zoom采用了built-in機制,可以通過setBuiltInZoomControls(boolean)來設置是否在地圖上顯示zoom控件。
MapActivity是壹個抽象類,任何想要顯示MapView的activity都需要派生自MapActivity。並且在其派生類的onCreate()中,都要創建壹個MapView實例,可以通過MapView constructor (then add it to a layout View with ViewGroup.addView(View)) 或者通過layout XML來創建。
實例分析
最後,按照慣例,還是用壹個小程序來演示壹下android中地圖功能的開發。主要功能是實現了地圖的縮放,添加了菜單,從而可以手動選擇地圖的顯示模式等。
Step 1: 新建壹個android project, 註意這裏要選擇的build target為"Google APIs"
Step 2: 修改menifest文件:
< xml version="1.0" encoding="utf-8" >
<manifest xmlns: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=""
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>
這裏需要將api key中的 改成妳自己申請到的api key.
Step 4: 修改代碼:
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;
}
}
關於google map的用法還有待各位Android開發人員在實際開發中的總結!