android开发使用百度地图sdk无法定位
public class MainActivity extends AppCompatActivity {
public LocationClient mLocationClient = null;
public BDLocationListener myListener = new MyLocationListener();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mLocationClient = new LocationClient(getApplicationContext());
mLocationClient.registerLocationListener(myListener);
setContentView(R.layout.activity_main);
positionText = (TextView) findViewById(R.id.position_text_view);
List<String> permissionList = new ArrayList<>();
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
permissionList.add(Manifest.permission.ACCESS_FINE_LOCATION);
}
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
permissionList.add(Manifest.permission.READ_PHONE_STATE);
}
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
permissionList.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
}
if (!permissionList.isEmpty()) {
String [] permissions = permissionList.toArray(new String[permissionList.size()]);
ActivityCompat.requestPermissions(MainActivity.this, permissions, 1);
} else {
requestLocation();
}
}
private void requestLocation() {
initLocation();
mLocationClient.start();
}
private void initLocation(){
LocationClientOption option = new LocationClientOption();
option.setScanSpan(5000);
option.setLocationMode(LocationClientOption.LocationMode.Battery_Saving);
option.setIsNeedAddress(true);
mLocationClient.setLocOption(option);
}
protected void onDestroy() {
super.onDestroy();
mLocationClient.stop();
}
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case 1:
if (grantResults.length > 0) {
for (int result : grantResults) {
if (result != PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "必须同意所有权限才能使用本程序", Toast.LENGTH_SHORT).show();
finish();
return;
}
}
requestLocation();
} else {
Toast.makeText(this, "发生未知错误", Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
}
}
public class MyLocationListener implements BDLocationListener {
@Override
public void onReceiveLocation(BDLocation location) {
StringBuilder currentPosition = new StringBuilder();
currentPosition.append("纬度:").append(location.getLatitude()).append("\n");
currentPosition.append("经线:").append(location.getLongitude()).append("\n");
currentPosition.append("国家:").append(location.getCountry()).append("\n");
currentPosition.append("省:").append(location.getProvince()).append("\n");
currentPosition.append("市:").append(location.getCity()).append("\n");
currentPosition.append("区:").append(location.getDistrict()).append("\n");
currentPosition.append("街道:").append(location.getStreet()).append("\n");
currentPosition.append("定位方式:");
if (location.getLocType() == BDLocation.TypeGpsLocation) {
currentPosition.append("GPS");
} else if (location.getLocType() == BDLocation.TypeNetWorkLocation) {
currentPosition.append("网络");
} else if (location.getLocType() == BDLocation.TypeOffLineLocation){
currentPosition.append("离线定位成功,离线定位结果也是有效的");
} else if (location.getLocType() == BDLocation.TypeServerError){
currentPosition.append("服务端网络定位失败");
} else if (location.getLocType() == BDLocation.TypeNetWorkException){
currentPosition.append("网络不同导致定位失败,请检查网络是否通畅");
} else if (location.getLocType() == BDLocation.TypeCriteriaException){
currentPosition.append("无法获取有效定位依据导致定位失败");
} else {
currentPosition.append(location.getLocType()); //这里打印出来location.getLocType()是162
currentPosition.append("老子也不知道是啥原因!!!");
}
positionText.setText(currentPosition);
}
@Override
public void onConnectHotSpotMessage(String s, int i) {
}
}