1

您好，我正在尝试在地图中加载我的位置，但我只是得到空白画布。

    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.exmp.way"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"  />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"  />
<uses-permission android:name="com.way.fameceramic.permission.MAPS_RECEIVE"  />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <uses-library android:name="com.google.android.maps" />

    <activity
        android:name="com.exmp.way.MapActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity></application> </manifest>

这是主要代码

这里布局文件代码

<com.google.android.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:apiKey="xxx-xxxxxxxxxxx"/>

出于安全原因，我禁用密钥

地图活动代码在这里

import java.util.List;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.view.Menu;

public class MapViewActivity extends MapActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.map_view);

       // Displaying Zooming controls
    MapView mapView = (MapView) findViewById(R.id.mapView);
    mapView.setBuiltInZoomControls(true);

    /**
     * Changing Map Type
     * */
    // mapView.setSatellite(true); // Satellite View
    // mapView.setStreetView(true); // Street View
    mapView.setTraffic(true); // Traffic view

    /**
     * showing location by Latitude and Longitude
     * */        
    MapController mc = mapView.getController();
    double lat = Double.parseDouble("22.270928");
    double lon = Double.parseDouble("70.789909");
    GeoPoint geoPoint = new GeoPoint((int)(lat * 1E6), (int)(lon * 1E6));
    mc.animateTo(geoPoint);
    mc.setZoom(15);
    mapView.invalidate(); 


    /**
     * Placing Marker
     * */
    List<Overlay> mapOverlays = mapView.getOverlays();
    Drawable drawable = this.getResources().getDrawable(R.drawable.mark_red);
    AddItemizedOverlay itemizedOverlay = 
         new AddItemizedOverlay(drawable, this);


    OverlayItem overlayitem = new OverlayItem(geoPoint, "Fame Ceramic", "Way web Solution");

    itemizedOverlay.addOverlay(overlayitem);
    mapOverlays.add(itemizedOverlay);

}

@Override
protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    return false;

    }



}

AddItemizedOverlay 类源在这里

import java.util.ArrayList;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.Toast;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapView;
import com.google.android.maps.OverlayItem;

public class AddItemizedOverlay extends ItemizedOverlay<OverlayItem> {


   private ArrayList<OverlayItem> mapOverlays = new ArrayList<OverlayItem>();

   private Context context;

   public AddItemizedOverlay(Drawable defaultMarker) {
        super(boundCenterBottom(defaultMarker));
   }

   public AddItemizedOverlay(Drawable defaultMarker, Context context) {
        this(defaultMarker);
        this.context = context;
   }

   @Override
   protected OverlayItem createItem(int i) {
      return mapOverlays.get(i);
   }

   @Override
   public int size() {
      return mapOverlays.size();
   }

   @Override
   protected boolean onTap(int index) {
      Log.e("Tap", "Tap Performed");
      return true;
   }

   public void addOverlay(OverlayItem overlay) {
      mapOverlays.add(overlay);
       this.populate();
   }

   /**
    * Getting Latitude and Longitude on Touch event
    * **/
   @Override
   public boolean onTouchEvent(MotionEvent event, MapView mapView) 
   {   

       if (event.getAction() == 1) {                
           GeoPoint geopoint = mapView.getProjection().fromPixels(
               (int) event.getX(),
               (int) event.getY());
           // latitude
           double lat = geopoint.getLatitudeE6() / 1E6;
           // longitude
           double lon = geopoint.getLongitudeE6() / 1E6;
           Toast.makeText(context, "Lat: " + lat + ", Lon: "+lon, Toast.LENGTH_SHORT).show();
       }                            
       return false;
   } 

}

在这里我过去了我使用的所有代码....给我解决方案我错在哪里我刚刚得到这个在此处输入图像描述

4

2 回答 2

0

您需要一个“谷歌程序员帐户”才能获得它，也许它是。

于 2013-05-06T15:46:39.637 回答
0

您混合使用了 Android Maps API v1 和 v2。删除所有代码并遵循：https ://developers.google.com/maps/documentation/android/start

您不再需要代码中的MapActivityand之类的东西GeoPoint。

于 2013-05-06T15:47:05.483 回答