Android 谷歌地图V2我的位置问题
我将以下代码放在我创建的一个新类中(我希望通过创建一个新类做了正确的事情)。我正在尝试让用户的当前位置显示在我的地图上。出现的一个问题是“基本地图”不是有效字段。我现在所拥有的只是地图本身。我希望有人能帮助我 附言。。很抱歉,这里的代码看起来是这样的。我似乎无法让它一直看起来像真正的代码Android 谷歌地图V2我的位置问题,android,google-maps,google-maps-android-api-2,Android,Google Maps,Google Maps Android Api 2,我将以下代码放在我创建的一个新类中(我希望通过创建一个新类做了正确的事情)。我正在尝试让用户的当前位置显示在我的地图上。出现的一个问题是“基本地图”不是有效字段。我现在所拥有的只是地图本身。我希望有人能帮助我 附言。。很抱歉,这里的代码看起来是这样的。我似乎无法让它一直看起来像真正的代码 import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; imp
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.LocationSource;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.widget.Toast;
public class mylocation extends FragmentActivity implements LocationListener, LocationSource
{
/**
* Note that this may be null if the Google Play services APK is not available.
*/
private GoogleMap mMap;
private OnLocationChangedListener mListener;
private LocationManager locationManager;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.basic_map);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if(locationManager != null)
{
boolean gpsIsEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
boolean networkIsEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if(gpsIsEnabled)
{
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000L, 10F, this);
}
else if(networkIsEnabled)
{
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 5000L, 10F, this);
}
else
{
//Show an error dialog that GPS is disabled.
}
}
else
{
//Show a generic error dialog since LocationManager is null for some reason
}
setUpMapIfNeeded();
}
@Override
public void onPause()
{
if(locationManager != null)
{
locationManager.removeUpdates(this);
}
super.onPause();
}
@Override
public void onResume()
{
super.onResume();
setUpMapIfNeeded();
if(locationManager != null)
{
mMap.setMyLocationEnabled(true);
}
}
/**
* Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly
* installed) and the map has not already been instantiated.. This will ensure that we only ever
* call {@link #setUpMap()} once when {@link #mMap} is not null.
* <p>
* If it isn't installed {@link SupportMapFragment} (and
* {@link com.google.android.gms.maps.MapView
* MapView}) will show a prompt for the user to install/update the Google Play services APK on
* their device.
* <p>
* A user can return to this Activity after following the prompt and correctly
* installing/updating/enabling the Google Play services. Since the Activity may not have been
* completely destroyed during this process (it is likely that it would only be stopped or
* paused), {@link #onCreate(Bundle)} may not be called again so we should call this method in
* {@link #onResume()} to guarantee that it will be called.
*/
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null)
{
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
// Check if we were successful in obtaining the map.
if (mMap != null)
{
setUpMap();
}
//This is how you register the LocationSource
mMap.setLocationSource(this);
}
}
/**
* This is where we can add markers or lines, add listeners or move the camera. In this case, we
* just add a marker near Africa.
* <p>
* This should only be called once and when we are sure that {@link #mMap} is not null.
*/
private void setUpMap()
{
mMap.setMyLocationEnabled(true);
}
@Override
public void activate(OnLocationChangedListener listener)
{
mListener = listener;
}
@Override
public void deactivate()
{
mListener = null;
}
@Override
public void onLocationChanged(Location location)
{
if( mListener != null )
{
mListener.onLocationChanged( location );
//Move the camera to the user's location once it's available!
mMap.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(location.getLatitude(), location.getLongitude())));
}
}
@Override
public void onProviderDisabled(String provider)
{
// TODO Auto-generated method stub
Toast.makeText(this, "provider disabled", Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderEnabled(String provider)
{
// TODO Auto-generated method stub
Toast.makeText(this, "provider enabled", Toast.LENGTH_SHORT).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
// TODO Auto-generated method stub
Toast.makeText(this, "status changed", Toast.LENGTH_SHORT).show();
}
}
import com.google.android.gms.maps.CameraUpdateFactory;
导入com.google.android.gms.maps.GoogleMap;
导入com.google.android.gms.maps.LocationSource;
导入com.google.android.gms.maps.SupportMapFragment;
导入com.google.android.gms.maps.model.LatLng;
导入android.location.location;
导入android.location.LocationListener;
导入android.location.LocationManager;
导入android.os.Bundle;
导入android.support.v4.app.FragmentActivity;
导入android.widget.Toast;
公共类mylocation扩展FragmentActivity实现LocationListener、LocationSource
{
/**
*请注意,如果Google Play services APK不可用,则该值可能为空。
*/
私有谷歌地图;
私有OnLocationChangedListener-mListener;
私人场所经理场所经理;
@凌驾
创建时受保护的void(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.basic_地图);
locationManager=(locationManager)getSystemService(位置服务);
如果(locationManager!=null)
{
布尔gpsIsEnabled=locationManager.isProviderEnabled(locationManager.GPS\U提供程序);
布尔networkIsEnabled=locationManager.isProviderEnabled(locationManager.NETWORK\u提供程序);
如果(GPSIS已启用)
{
locationManager.RequestLocationUpdate(locationManager.GPS_提供程序,5000L,10F,本);
}
else if(网络已启用)
{
locationManager.RequestLocationUpdate(locationManager.NETWORK_提供程序,5000L,10F,本);
}
其他的
{
//显示GPS已禁用的错误对话框。
}
}
其他的
{
//显示一般错误对话框,因为LocationManager因某种原因为空
}
setupmapifneed();
}
@凌驾
公共无效暂停()
{
如果(locationManager!=null)
{
locationManager.RemoveUpdate(此);
}
super.onPause();
}
@凌驾
恢复时公开作废()
{
super.onResume();
setupmapifneed();
如果(locationManager!=null)
{
mMap.setMyLocationEnabled(真);
}
}
/**
*如果可能的话,设置地图(例如,Google Play services APK已正确启动)
*已安装)并且映射尚未实例化。这将确保
*当{@link#mMap}不为null时,调用{@link#setUpMap()}一次。
*
*如果未安装{@link SupportMapFragment}(和
*{@link com.google.android.gms.maps.MapView
*MapView})将提示用户在上安装/更新Google Play services APK
*他们的设备。
*
*用户可以按照提示正确返回此活动
*正在安装/更新/启用Google Play服务。因为活动可能尚未启动
*在此过程中完全破坏(可能只会停止或停止
*暂停),{@link#onCreate(Bundle)}可能不会再次调用,因此我们应该在中调用此方法
*{@link#onResume()}以保证将调用它。
*/
私有void setUpMapIfNeeded(){
//执行空检查以确认尚未实例化映射。
如果(mMap==null)
{
//尝试从SupportMapFragment获取映射。
mMap=((SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
//检查我们是否成功获得地图。
如果(mMap!=null)
{
setUpMap();
}
//这是注册LocationSource的方式
mMap.setLocationSource(本);
}
}
/**
*在这里,我们可以添加标记或线条、添加侦听器或移动摄影机
*在非洲附近加一个标记。
*
*当我们确定{@link#mMap}不是null时,应该只调用一次。
*/
私有void setUpMap()
{
mMap.setMyLocationEnabled(真);
}
@凌驾
public void激活(OnLocationChangedListener侦听器)
{
mListener=监听器;
}
@凌驾
公开作废
{
mListener=null;
}
@凌驾
已更改位置上的公共无效(位置)
{
if(mListener!=null)
{
mListener.onLocationChanged(位置);
//一旦相机可用,将其移动到用户的位置!
mMap.animateCamera(CameraUpdateFactory.newLatLng(newLatLng(location.getLatitude(),location.getLongitude()));
}
}
@凌驾
公共无效onProviderDisabled(字符串提供程序)
{
//TODO自动生成的方法存根
Toast.makeText(该“提供程序已禁用”,Toast.LENGTH_SHORT).show();
}
@凌驾
公共无效onProviderEnabled(字符串提供程序)
{
//TODO自动生成的方法存根
Toast.makeText(这是“已启用提供程序”,Toast.LENGTH_SHORT).show();
}
@凌驾
public void onStatusChanged(字符串提供程序、int状态、Bundle extra)
{
//TODO自动生成的方法存根
Toast.makeText(此“状态已更改”,Toast.LENGTH_SHORT).show();
}
}
试试这个:
setContentView(R.layout.basic_map);
设置映射:
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
布局:basic_map.xml
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_below="@id/lltop"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
更新。。。我更改了setContentView(R.layout.basic_map);设置ContentView(R.layout.activity_main);这似乎是唯一有效的方法。但它仍然无法使该位置在我的应用程序中处于活动状态。除此之外,我不知道会出什么问题。