Android学习-- 基于位置的服务 LBS(基于百度地图Android SDK)--定位SDK

原文:Android学习-- 基于位置的服务 LBS(基于百度地图Android SDK)--定位SDK

前两天学习了一下Android的特色--LBS(基于百度地图Android SDK)。有些坑还是得填下,避免以后用到时忘记了。

一 .申请API_KEY

1)http://lbsyun.baidu.com/ :在这里注册并申请。注册之后出现应用列表

2)选择创建应用:下图所示

PS：SHA1找了我好久

按照书上面的，资料上看了，左侧选择项目目录类型project，打开右侧Gradle–>app–>android–>signingReport，发现，诶，怎么没有。。。。（黑人问号脸？？），突然发现左下角有个转换的键（左下标红的地方），一按。。。，答案出来了。

3)完成
创建完成，获得API_KEY。

二 .下载百度定位SDK

下载解压后得到libs文件夹

BaiduLBS_android.jar放在project目录下的app–>libs目录下，其他目录放在app–>main–>新建文件夹比如：jniLibs下

三 .使用百度地图

1） AndroidManifest.xml
添加如下权限

<!-- 这个权限用于进行网络定位-->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<!-- 这个权限用于访问GPS定位-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
<!-- 用于访问wifi网络信息，wifi信息会用于进行网络定位-->
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<!-- 获取运营商信息，用于支持提供运营商信息相关的接口-->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
<!-- 这个权限用于获取wifi的获取权限，wifi信息会用来进行网络定位-->
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
<!-- 用于读取手机当前的状态-->
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
<!-- 写入扩展存储，向扩展卡写入数据，用于写入离线定位数据-->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<!-- 访问网络，网络定位需要上网-->
<uses-permission android:name="android.permission.INTERNET" />
<!-- SD卡读取权限，用户写入离线定位数据-->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission>

在Application标签中声明SERVICE组件,每个APP拥有自己单独的定位SERVICE

<service android:name="com.baidu.location.f" android:enabled="true" android:process=":remote">
</service>

Android定位SDK4.2及之后版本需要在Mainfest.xml正确设置Accesskey（AK），如果设置错误将会导致定位和地理围栏服务无法正常使用。设置AK，在Application标签中加入

<meta-dataandroid:name="com.baidu.lbsapi.API_KEY"android:value="AK" />       //key:开发者申请的Key

2）新建activity：LBSwithBaidu，LBSwithBaidu代码如下：

public class LBSwithBaidu extends AppCompatActivity {private TextView text;private LocationClient client;private  StringBuilder connrentPosition;private MapView map;private BaiduMap baidumap;private boolean ismylocation=true;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);SDKInitializer.initialize(getApplicationContext());client = new LocationClient(getApplicationContext());client.registerLocationListener(new MylocationListener());setContentView(R.layout.activity_lbswith_baidu);text= (TextView) findViewById(R.id.textView_location);map= (MapView) findViewById(R.id.mapwithbaidu);baidumap=map.getMap();baidumap.setMyLocationEnabled(true);List<String> permission = new ArrayList<>();if (ContextCompat.checkSelfPermission(LBSwithBaidu.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {permission.add(Manifest.permission.ACCESS_FINE_LOCATION);}if (ContextCompat.checkSelfPermission(LBSwithBaidu.this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {permission.add(Manifest.permission.READ_PHONE_STATE);}if (ContextCompat.checkSelfPermission(LBSwithBaidu.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {permission.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);}if (!permission.isEmpty()) {String[] permissions = permission.toArray(new String[permission.size()]);ActivityCompat.requestPermissions(LBSwithBaidu.this, permissions, 1);} else {requestion();}}private void requestion() {initlocation();client.start();}private void initlocation() {LocationClientOption option=new LocationClientOption();option.setIsNeedAddress(true);option.setScanSpan(5000);client.setLocOption(option);}@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {switch (requestCode) {case 1:if (grantResults.length > 0) {for(int result:grantResults){if(result!=PackageManager.PERMISSION_GRANTED){Toast.makeText(this, "必须同意权限", Toast.LENGTH_SHORT).show();finish();return;}}requestion();}else {Toast.makeText(this, "发生错误", Toast.LENGTH_SHORT).show();}break;default:}}public void nagativato(BDLocation bdLocation) {if (ismylocation) {LatLng ll = new LatLng(bdLocation.getLatitude(), bdLocation.getLongitude());Log.d("pipa",bdLocation.getLatitude()+"::"+ bdLocation.getLongitude());MapStatusUpdate updata = MapStatusUpdateFactory.newLatLng(ll);baidumap.animateMapStatus(updata);updata = MapStatusUpdateFactory.zoomTo(16f);baidumap.animateMapStatus(updata);ismylocation = false;}MyLocationData.Builder loBuilder=new MyLocationData.Builder().latitude(bdLocation.getLatitude()).longitude(bdLocation.getLongitude());MyLocationData locationData=loBuilder.build();baidumap.setMyLocationData(locationData);}public class MylocationListener implements BDLocationListener {@Overridepublic void onReceiveLocation(BDLocation bdLocation) {if(bdLocation.getLocType()==BDLocation.TypeGpsLocation||bdLocation.getLocType()==BDLocation.TypeNetWorkLocation){nagativato(bdLocation);}connrentPosition = new StringBuilder();connrentPosition.append("纬度:").append(bdLocation.getLatitude()).append("\n");connrentPosition.append("经度:").append(bdLocation.getLongitude()).append("\n");connrentPosition.append("国家:").append(bdLocation.getCountry()).append("\n");connrentPosition.append("省:").append(bdLocation.getProvince()).append("\n");connrentPosition.append("市:").append(bdLocation.getCity()).append("\n");connrentPosition.append("县:").append(bdLocation.getDistrict()).append("\n");connrentPosition.append("街道:").append(bdLocation.getStreet()).append("\n");connrentPosition.append("定位方式:");if (bdLocation.getLocType() == BDLocation.TypeGpsLocation) {connrentPosition.append("GPS");} else if (bdLocation.getLocType() == BDLocation.TypeNetWorkLocation) {connrentPosition.append("网络定位");}runOnUiThread(new Runnable() {@Overridepublic void run() {text.setText(connrentPosition);}});}@Overridepublic void onConnectHotSpotMessage(String s, int i) {}}@Overrideprotected void onResume() {super.onResume();map.onResume();}@Overrideprotected void onPause() {super.onPause();map.onPause();}@Overrideprotected void onDestroy() {super.onDestroy();client.stop();map.onDestroy();baidumap.setMyLocationEnabled(false);}
}

效果图：