Question

我想导入这些包 import com.google.android.maps.MapActivity; import com.google.android.maps.MapController; import com.google.android.maps.MapView; 在我的mainactivity.java中

但是Eclipse无法解析这些包，我也不知道原因。

我已经按照我在电子书中逐步了解的有关如何在您的应用中导入地图的所有说明，并且没有提及此错误。

这是我的档案：

/////////// MainActivity.java /////////////////////

package com.paad.whereami;

import java.io.IOException;
import java.util.List;
import java.util.Locale;

import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;

import android.app.Activity;
import android.content.Context;
import android.location.Address;
import android.location.Criteria;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

public class MainActivity extends MapActivity {

//static final private int MENU_REFRESH = Menu.FIRST;

@Override
    protected boolean isRouteDisplayed() {
    return false;
}

private LocationManager locationManager;
private String provider;
private Location location;

private final LocationListener locationListener = new LocationListener() {
    public void onLocationChanged(Location location) {
        updateWithNewLocation(location);
    }
    public void onProviderDisabled(String provider){
        updateWithNewLocation(null);
    }
    public void onProviderEnabled(String provider){ }
    public void onStatusChanged(String provider, int status, Bundle extras){ }
};

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.map_layout);
        mapView = (MapView)findViewById(R.id.map_view);

        locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);

        Criteria criteria = new Criteria();
        criteria.setAccuracy(Criteria.ACCURACY_FINE);
        criteria.setAltitudeRequired(false);
        criteria.setBearingRequired(false);
        criteria.setCostAllowed(true);
        criteria.setPowerRequirement(Criteria.POWER_LOW);
        provider = locationManager.getBestProvider(criteria, true);
        location = locationManager.getLastKnownLocation(provider);

    //Log.v("BEFORE", "Location is: " + location);
    updateWithNewLocation(location);
    //Log.v("AFTER", "LOCATION FOUND");
    locationManager.requestLocationUpdates(provider, 2000, 10, locationListener);
    }

    private void updateWithNewLocation(Location location){
        String latLongString;
        TextView myLocationText;
        myLocationText = (TextView)findViewById(R.id.myLocationText);

        String addressString = "No address found";

        if (location != null) {
        double lat = location.getLatitude();
        double lng = location.getLongitude();
        latLongString = "Lat:" + lat + "\nLong:" + lng;

        //double latitude = 73.147536;
        //double longitude = 0.510638;
        Geocoder gc = new Geocoder(this, Locale.getDefault());

        try {
            List<Address> addresses = gc.getFromLocation(lat, lng, 1);
            Log.v("TRY_BODY", "All addresses are: " + addresses);
            StringBuilder sb = new StringBuilder();
            if (addresses.size() > 0) {
                Log.v("IF_BODY", "All addresses are: " + addresses);
                Address address = addresses.get(0);
                for (int i = 0; i < address.getMaxAddressLineIndex(); i++){
                    sb.append(address.getAddressLine(i)).append("\n");
                    sb.append(address.getLocality()).append("\n");
                    sb.append(address.getPostalCode()).append("\n");
                    sb.append(address.getCountryName());
                }
                addressString = sb.toString();
            }
        } catch (IOException e) {}
        } 
        else {
        latLongString = "No location found";
        }

        myLocationText.setText("Current Pos:\n"+latLongString+"\n"+addressString);
    }

}

//////////// main.xml /////////////////

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
  <TextView  
    android:id="@+id/myLocationText"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
  />

  <com.google.android.maps.MapView
android:id="@+id/myMapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:enabled="true"
android:clickable="true"
android:apiKey="@string/myMapKey"
/>

</LinearLayout>

////////////// Manifest.xml ////////////////

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

    <uses-sdk
        android:minSdkVersion="4"
        android:targetSdkVersion="15" />

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

        <application
            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=".MainActivity"
                android:label="@string/title_activity_main" >
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

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

</manifest>

提前致谢。

Answer 1

右键点击您的项目---＆gt;属性---＆gt; android - ＆gt;选择目标名称Google ApIs。并清理项目并构建项目。

Answer 2

在您的eclipse项目中，检查您使用的是google-15而不是平台的android-15，地图支持仅作为google插件包中的额外lib。

无法解析com.google.android.maps包

2 个答案: