要想在自己的应用中加入百度地图的功能，首先要申请一个API Key,整个过程中都很简单，但是在填写SHA1时，就存在着坑：如果你使用的是eclipse，点击导航栏的Window->Preferences->Android->Build即可查看到。如果你是使用的是AS，则需要在命令行提示符中查看，具体的可在网上查找解决方法。
接着在编码之前我们要先将百度地图Android版的SDK准备好，下载地址是baidu。下载完后解压和复制文件等就不详细说明，网上教程很多。开始正式编码：第一阶段（显示地图）：在布局文件中比较简单，只需放置一个MapView让它占满屏幕即可。在MainActivity中：在加载布局文件（setContentView()）之前我们要先初始化下载好的SDK，调用SDKInitializer.initialize()，并传入Context对象（getApplicationContext()）,接着获取MapView实例。另外还需重写onPause()，onDestroy()和onResume()来对百度地图的API进行管理，以保证资源即使被释放。最后在配置文件AndroidManifest.xml中声明各种权限，其中至关重要的一步是要将申请到的API Key配置进去：<mata-data android:name="com.baidu.lbsapi.API Key" android:value="(你申请到的API Key)">
第二阶段（定位到我的位置）：baiduMap=mapView.getMap(); locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); List<String> providerlist = locationManager.getProviders(true); if (providerlist.contains(LocationManager.GPS_PROVIDER)) { provider = LocationManager.GPS_PROVIDER; } else if (providerlist.contains(LocationManager.NETWORK_PROVIDER)) { provider = LocationManager.NETWORK_PROVIDER; } else { Toast.makeText(MainActivity.this, "No location provider to use.", Toast.LENGTH_LONG).show(); return; } if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { // TODO: Consider calling // ActivityCompat#requestPermissions // here to request the missing permissions, and then overriding // public void onRequestPermissionsResult(int requestCode, String[] permissions, // int[] grantResults) // to handle the case where the user grants the permission. See the documentation // for ActivityCompat#requestPermissions for more details. return; } Location location = locationManager.getLastKnownLocation(provider); if (location != null) { navigateTo(location); } locationManager.requestLocationUpdates(provider, 5000, 1, locationListener); } private void navigateTo(Location location){ if(isFirstLocate){ LatLng ll=new LatLng(location.getLatitude(),location.getLongitude()); MapStatusUpdate mapStatusUpdate= MapStatusUpdateFactory.newLatLng(ll); baiduMap.animateMapStatus(mapStatusUpdate); mapStatusUpdate=MapStatusUpdateFactory.zoomTo(16f); baiduMap.animateMapStatus(mapStatusUpdate); isFirstLocate=false; } MyLocationData.Builder locationBuilder= new MyLocationData.Builder(); locationBuilder.latitude(location.getLatitude()); locationBuilder.longitude(location.getLongitude()); MyLocationData locationData=locationBuilder.build(); baiduMap.setMyLocationData(locationData); } LocationListener locationListener=new LocationListener() { @Override public void onLocationChanged(Location location) { if(location!=null){ navigateTo(location); } } @Override public void onStatusChanged(String provider, int status, Bundle extras) { } @Override public void onProviderEnabled(String provider) { } @Override public void onProviderDisabled(String provider) { }};
(附上源代码Github)