博客:http://blog.csdn.net/developer_jiangqq
(一)基本介绍(Fragment和SupportMapFragment):
Fragment的使用现在安卓APP开发中用的比较多了，Fragment名称为碎片和Activity有着相似的生命管理周期，基本作用可以进行开发兼容手机和平板的app,较少兼容分辨率版本的工作量，提高工作效率。其中Fragment还是可以包含控制代码的视图模块，可以非常方便的进行组合。使用起来很方便。具体有个Fragment的介绍和使用请点击查看(官网Fragment的介绍和基本使用)，这边就不多讲了。下面我们来看下百度地图API给我们提供的地图框架SupportMapFragment。SupportMapFragment是继承于Fragment因此具备Fragment的完成的生命周期,该框架主要用来管理地图生命周期,主要有下面两个方法1:getMapView()：获取MapView引用，要在onCreateView函数调用之后进行使用.2:newInstance();返回获取SupportMapFragment对象实例。
(二)使用方法:
使用方法和我们平时用Fragment的时候差不多,首先获取SupportMapFragment实例，然后把该Fragment添加到指定View视图图.commit一下即可.
(三)代码演示，注释基本已经写了挺详细了，直接看就OK了
1.自定义MyApplication.java设置全局变量,并且进行校验密钥:
package com.ztt.baidumap.ui;import android.app.Application; import android.content.Context; import android.util.Log; import android.widget.Toast;import com.baidu.mapapi.BMapManager; import com.baidu.mapapi.MKGeneralListener; import com.baidu.mapapi.map.MKEvent; /*** 自定义Application,进行key识别验证 （使用单例）* @author Jiangqq* @time 2014/03/15 10:14*/ public class MyApplication extends Application {public static MyApplication instance=null;BMapManager mBMapManager = null;public boolean m_bKeyRight = true;public static final String strKey = "vUAGbPwLpolIqiwWisnQPeIE"; //百度地图官网申请的密钥public static MyApplication getInstance(){return instance;}@Overridepublic void onCreate() {super.onCreate();instance=this;//在APP应用启动的时候，进行初始化验证initEngineManager(this);}/*** 进行验证key* @param pContext*/private void initEngineManager(Context pContext){if (mBMapManager == null) {mBMapManager = new BMapManager(pContext);}if (!mBMapManager.init(strKey,new MyGeneralListener())) {Toast.makeText(MyApplication.getInstance(), "BMapManager 初始化错误!", Toast.LENGTH_LONG).show();}}// 常用事件监听，用来处理通常的网络错误，授权验证错误等static class MyGeneralListener implements MKGeneralListener {@Overridepublic void onGetNetworkState(int iError) {if (iError == MKEvent.ERROR_NETWORK_CONNECT) {Toast.makeText(MyApplication.getInstance(), "您的网络出错啦！",Toast.LENGTH_LONG).show();}else if (iError == MKEvent.ERROR_NETWORK_DATA) {Toast.makeText(MyApplication.getInstance(), "输入正确的检索条件！",Toast.LENGTH_LONG).show();}else {Log.d("zttjiangqq", "iError="+iError);}// ... }@Overridepublic void onGetPermissionState(int iError) {//非零值表示key验证未通过if (iError != 0) {//授权Key错误： Toast.makeText(MyApplication.getInstance(), "请在 DemoApplication.java文件输入正确的授权Key,并检查您的网络连接是否正常！error: "+iError, Toast.LENGTH_LONG).show();MyApplication.getInstance().m_bKeyRight = false;}else{MyApplication.getInstance().m_bKeyRight = true;Toast.makeText(MyApplication.getInstance(), "key认证成功", Toast.LENGTH_LONG).show();}}} }
2:创建一个FragmentMapDemo.java,继承于FragmentActivity，使用newInstance()方法获取SupportMapFragment,进行显示地图:
package com.ztt.baidumap.ui;import android.content.res.Configuration; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.util.Log;import com.baidu.mapapi.BMapManager; import com.baidu.mapapi.map.MapController; import com.baidu.mapapi.map.SupportMapFragment; import com.baidu.platform.comapi.basestruct.GeoPoint;public class FragmentMapDemo extends FragmentActivity {SupportMapFragment map;@Overridepublic void onCreate(Bundle arg0) {/*** 使用地图sdk前需先初始化BMapManager.* BMapManager是全局的，可为多个MapView共用，它需要地图模块创建前创建，* 并在地图地图模块销毁后销毁，只要还有地图模块在使用，BMapManager就不应该销毁*/MyApplication app = (MyApplication)this.getApplication();if (app.mBMapManager == null) {app.mBMapManager = new BMapManager(getApplicationContext());/*** 如果BMapManager没有初始化则初始化BMapManager*/app.mBMapManager.init(MyApplication.strKey,new MyApplication.MyGeneralListener());}Log.d("zttjiangqq", "onCreate");setContentView(R.layout.activity_fragment);map = SupportMapFragment.newInstance();FragmentManager manager = getSupportFragmentManager();FragmentTransaction ft= manager.beginTransaction();ft.add(R.id.map, map, "map_fragment");ft.commit();}@Overrideprotected void onRestoreInstanceState(Bundle savedInstanceState) {super.onRestoreInstanceState(savedInstanceState);Log.d("zttjiangqq", "onRestoreInstanceState");}@Overrideprotected void onRestart() {super.onRestart();Log.d("zttjiangqq", "onRestart");}@Overridepublic void onStart() {super.onStart();Log.d("zttjiangqq", "onStart");}@Overridepublic void onResume() {super.onResume();Log.d("zttjiangqq", "onResume");// 得到MapView的控制权,可以用它控制和驱动平移和缩放 MapController controller = map.getMapView().getController();// 用给定的经纬度构造一个GeoPoint，单位是微度 (度 * 1E6) 并且设置设置地图中心点 (这边使用天安门)controller.setCenter(new GeoPoint((int)(39.945 * 1E6), (int)(116.404 * 1E6)));// 设置地图zoom级别 controller.setZoom(13);}@Overridepublic void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);Log.d("zttjiangqq", "onSaveInstanceState");}@Overridepublic void onPause() {super.onPause();Log.d("zttjiangqq", "onPause");}@Overridepublic void onStop() {super.onStop();Log.d("zttjiangqq", "onStop");}@Overridepublic void onDestroy() {super.onDestroy();Log.d("zttjiangqq", "onDestory");}@Overridepublic void onConfigurationChanged(Configuration newConfig) {super.onConfigurationChanged(newConfig);Log.d("zttjiangqq", "onConfigurationChanged");} }
3:布局文件:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><FrameLayoutandroid:id="@+id/map"android:layout_width="match_parent"android:layout_height="match_parent" /></LinearLayout>
(三)注意一定要添加配置权限
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /><uses-permission android:name="android.permission.BAIDU_LOCATION_SERVICE" /><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.ACCES_MOCK_LOCATION" /><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /><uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" /><uses-permission android:name="android.permission.WAKE_LOCK" /><uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /><uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /><uses-permission android:name="android.permission.ACCESS_GPS" /><!-- SDK1.5需要android.permission.GET_TASKS权限判断本程序是否为当前运行的应用? --><uses-permission android:name="android.permission.GET_TASKS" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.BROADCAST_STICKY" /><uses-permission android:name="android.permission.WRITE_SETTINGS" /><!-- 来电消音 --><uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" /><uses-permission android:name="android.permission.READ_PHONE_STATE" /><uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" /><uses-permission android:name="android.permission.RECORD_AUDIO" />
