进口com.google.maps.MapView不工作

问题描述

试图做一个地图的例子，我发现在这里
的

问题是这样的code。具体来说，编译器似乎并不知道MapView的是什么？事实上，也适用于android.graphics.drawable.Drawable。我认为import语句会解决，但必须失去了一些其他的设置步骤。

任何帮助AP preciated。

 包com.example.HelloGoogleMaps2;
进口的java.util.List;
进口android.graphics.drawable.Drawable;
进口android.os.Bundle;
进口com.google.android.maps.GeoPoint;
进口com.google.android.maps.MapActivity;
进口com.google.android.maps.MapView;
进口com.google.android.maps.Overlay;
进口com.google.android.maps.OverlayItem;公共类MainMap扩展MapActivity
{
 @覆盖
 公共无效的onCreate（捆绑savedInstanceState）
 {
     super.onCreate（savedInstanceState）;
     的setContentView（R.layout.main）;     ** ** MapView类MapView类=（图形页面）findViewById（R.id.mapview）;
     mapView.setBuiltInZoomControls（真）;     清单＆LT;＆叠加GT; mapOverlays =调用MapView.getOverlays（）;
     ** **可绘制可绘制= this.getResources（）getDrawable（R.drawable.icon）。
     HelloItemizedOverlay itemizedoverlay =新HelloItemizedOverlay（绘制，这一点）;
     的GeoPoint点=新的GeoPoint（30443769，-91158458）;
     OverlayItem overlayitem =新OverlayItem（点，我在路易斯安那州！放任LES苯教临时工rouler！）;     的GeoPoint点2 =新的GeoPoint（17385812,78480667）;
     OverlayItem overlayitem2 =新OverlayItem（！Namashkaar点2，我在印度海得拉巴！）;     itemizedoverlay.addOverlay（overlayitem）;
     itemizedoverlay.addOverlay（overlayitem2）;     mapOverlays.add（itemizedoverlay）;
 }
 @覆盖
 保护布尔isRouteDisplayed（）
 {
 返回false;
 }
}
 

解决方案

检查您的目标设备，当你创建新的项目。它应该是谷歌的API（谷歌公司） - API级别 - （任何你想要的）

作为医生说：你必须有一个 AVD 配置为使用谷歌的API 目标，或者使用显影装置，包括地图库。并确保您有Internet的权限

 ＆LT;使用许可权的android：NAME =android.permission.INTERNET对/＆GT;
 

和作为默认的Andr​​oid库不包含图形页面，所以你需要
指定在AndroidManifest.xml

 ＆LT;使用库机器人：名字=com.google.android.maps/＆GT;
 

和是开始与谷歌的好地方地图

你确定你有

Trying to do a map example I found herehttp://codemagician.wordpress.com/2010/05/06/android-google-mapview-tutorial-done-right/

The problem is this code. Specifically, the compiler does not seem to know what a MapView is? In fact, also applies to android.graphics.drawable.Drawable. I thought that the import statement would resolve that but must be missing some other setup step.

Any help appreciated.

package com.example.HelloGoogleMaps2;
import java.util.List;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;

public class MainMap extends MapActivity
{
 @Override
 public void onCreate(Bundle savedInstanceState)
 {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.main);

     **MapView** mapView = (MapView) findViewById(R.id.mapview);
     mapView.setBuiltInZoomControls(true);

     List<Overlay> mapOverlays = mapView.getOverlays();
     **Drawable** drawable = this.getResources().getDrawable(R.drawable.icon);
     HelloItemizedOverlay itemizedoverlay = new HelloItemizedOverlay(drawable,this);
     GeoPoint point = new GeoPoint(30443769,-91158458);
     OverlayItem overlayitem = new OverlayItem(point, "Laissez les bon temps rouler!", "I'm in Louisiana!");

     GeoPoint point2 = new GeoPoint(17385812,78480667);
     OverlayItem overlayitem2 = new OverlayItem(point2, "Namashkaar!", "I'm in Hyderabad, India!");

     itemizedoverlay.addOverlay(overlayitem);
     itemizedoverlay.addOverlay(overlayitem2);

     mapOverlays.add(itemizedoverlay);
 }
 @Override
 protected boolean isRouteDisplayed()
 {
 return false;
 }
}

解决方案

Check your target device when you create new project. It should be Google APIs(Google Inc.)-API Level -(whatever you want).

as doc says :"you must have an AVD configured to use the Google APIs target, or be using a development device that includes the Maps library".And make sure you have Internet Permission

<uses-permission android:name="android.permission.INTERNET"/>

and as MapView is not included in the default Android libraries, so you need tospecify in AndroidManifest.xml

<uses-library android:name="com.google.android.maps" />

and here is a good place to start with google maps

are you sure you have

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