Android地图定位
遇到的问题：
①
②未能成功定位的所在城市。
解决方法： ①由于未能正确申请API，导致不能定位，出现如上图错误。在找到错误之后，在http://lbsyun.baidu.com/apiconsole/key页面上“创建应用”， 输入应用名称、选择应用类型和启用服务，提交之后，输入SHA1码和包名，自动生成AK，就是申请到的API Key。name是固定值，value是APIKey。
②仍未能成功定位。
界面效果图
核心代码
MainActivity.java
package cn.bzu.tong.bmap;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.Menu;
import android.widget.Toast;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;
public class MainActivity extends Activity
{
private MapView mapView;
private BaiduMap baiduMap;
private LocationManager locationManager;
private String provider;
private boolean isFirstLocate = true;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
SDKInitializer.initialize(getApplicationContext());
setContentView(R.layout.activity_main);
mapView = (MapView) findViewById(R.id.map_view);
baiduMap = mapView.getMap();
baiduMap.setMyLocationEnabled(true);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
//获取所有可用的位置提供器
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 {
//当没有可用位置服务器时，弹出Toast提示用户
Toast.makeText(this, "No location provider to use", Toast.LENGTH_LONG).show();
return ;
}
Location location = locationManager.getLastKnownLocation(provider);
if(location != null){
navigateTo(location);
}
locationManager.requestLocationUpdates(provider, 5000, 1, locationListener);
}
private void navigateTo(Location location) {
// TODO Auto-generated method stub
if(isFirstLocate){
LatLng ll = new LatLng(location.getLatitude(), location.getLongitude());
MapStatusUpdate update = MapStatusUpdateFactory.newLatLng(ll);
baiduMap.animateMapStatus(update);
update = MapStatusUpdateFactory.zoomTo(16f);
baiduMap.animateMapStatus(update);
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 onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
//更新当前设备的位置信息
if(location != null){
navigateTo(location);
}
}
};
protected void onDestroy()
{
super.onDestroy();
baiduMap.setMyLocationEnabled(false);
mapView.onDestroy();
if(locationManager != null){
//关闭程序时将监听移除
locationManager.removeUpdates(locationListener);
}
}
protected void onPause()
{
super.onPause();
mapView.onPause();
}
protected void onResume()
{
super.onResume();
mapView.onResume();
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="match_parent"
>
<com.baidu.mapapi.map.MapView
android:id="@+id/map_view"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:clickable="true"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<manifest
....
<uses-permission android:name="android.permission.GET_ACCOUNTS"/>
<uses-permission android:name="android.permission.USE_CREDENTIALS"/>
<uses-permission android:name="android.permission.MANAGE_ACCOUNTS"/>
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="com.android.launcher.perimission.READ_ETTINGS"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.BROADCAST_STICKY"/>
<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"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
...
<application
...
<meta-data
android:name="com.baidu.lbsapi.API_KEY"
android:value="AO0YBAVzeUxq2lDQYi72cFPT"/>
...
</application>
</manifest>
需要注意的问题：
1、一定要正确申请好API；
2、在AndroidManifest.xml里添加权限和API。
3、