Question

我想使用MapView，所以我得到了SHA1指纹，而且我得到了我的apikey但是在我的MainActivity.java文件中，当我导入com.google.android.maps.MapView时，它显示这个包不可用所以我不＃ 39;不知道我犯了什么错误

这是我的清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.mapviewexample"
    android:versionCode="1"
    android:versionName="1.0" >

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

    <permission
        android:name="com.example.mapdemo.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />

    <uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.mapviewexample.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="my apikey" />
    </application>

</manifest>

这是我的activity_main.xml文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <fragment
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.google.android.gms.maps.MapFragment" />

</RelativeLayout>

这是我的MainActivity.java文件

package com.example.mapviewexample;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
public class MainActivity extends Activity {

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

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

正如您在导入此内容时所见

import com.google.android.gms.maps.CameraUpdateFactory;

和其他人显示这些包不可用。我该怎么办？

Answer 1

更改项目构建目标，它可能是标准的android平台相反，您应该选择Google-API项目。

Answer 2

你需要使用 uses-library android：name =“com.google.android.maps” 在你的清单和sdk应该是google-api，转到你的项目属性然后android并从那里选择任何谷歌API 并使用Mapactivity扩展您的课程。

Answer 3

MapView始终显示在MapActivity中。您正在使用Activity。尝试使用MapActivity和谷歌API模拟器。 <uses-library android:name="com.google.android.maps" />将其放入您的应用标记

Answer 4

First of all **GET THE GOOGLE MAPS API KEY**

To allow you to show maps on your application, Google Maps API needs to identify you and your application (even if you are simply developing). For this you need the API Key for the Android platform.
You can get this by creating an md5 checksum of the debug certificate for you map application (in this case the tutorial).
Find your debug.keystore at
* Windows Vista: C:\Users\<user>\.android\debug.keystore
* Windows XP: C:\Documents and Settings\<user>\.android\debug.keystore
Then use the Keytool (found at C:\Program Files\Java\jdk1.6.0_20\bin) and get the md5 checksum by executing this:
keytool -list -alias androiddebugkey -keystore “C:\Documents and Settings\<user>\.android\debug.keystore” -storepass android -keypass android


after that start coding and be sure **you select the relevant version of Google APIs (in case there’s a newer version by the time you are working on this).**

**strings.xml**

    <?xml version="1.0" encoding="utf-8"?>
<resources>
 <string name="hello">Hello World, HelloGoogleMaps!</string>
 <string name="app_name">Hello,GoogleMaps</string>
 <string name="mapskey">YOUR API KEY</string>
</resources>

**main.xml**

    <?xml version="1.0" encoding="utf-8"?>
<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="YOUR API KEY"
/>

**AndroidManifest.xml**

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.HelloGoogleMaps2"
 android:versionCode="1"
 android:versionName="1.0">
 <application android:icon="@drawable/icon" android:label="@string/app_name">
 <activity android:name=".HelloGoogleMaps2" android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar">
 <intent-filter>
 <action android:name="android.intent.action.MAIN" />
 <category android:name="android.intent.category.LAUNCHER" />
 </intent-filter>
 </activity>
 <uses-library android:name="com.google.android.maps" />
 </application>
 <uses-permission android:name="android.permission.INTERNET" />
</manifest>


**HelloGoogleMaps2.java**

    public class HelloGoogleMaps 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;
 }
}

    **HelloItemizedOverlay.java**

    public class HelloItemizedOverlay extends ItemizedOverlay<OverlayItem>
{
 private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
 private Context mContext;

 public HelloItemizedOverlay(Drawable defaultMarker, Context context)
 {
 super(boundCenterBottom(defaultMarker));
 mContext = context;
 }

 public void addOverlay(OverlayItem overlay)
 {
 mOverlays.add(overlay);
 populate();
 }
 @Override
 protected OverlayItem createItem(int i)
 {
 return mOverlays.get(i);
 }
 @Override
 public int size()
 {
 return mOverlays.size();
 }
 @Override
 protected boolean onTap(int index)
 {
 OverlayItem item = mOverlays.get(index);
 AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
 dialog.setTitle(item.getTitle());
 dialog.setMessage(item.getSnippet());
 dialog.show();
 return true;
 }
}

Answer 5

确保你的关键工作。先用谷歌示例试试
您必须转发所有Activity life cycle methods。

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    mapView.onCreate(savedInstanceState);
    try {
       MapsInitializer.initialize(mContext);
    } catch (GooglePlayServicesNotAvailableException e) {
       e.printStackTrace();
    }
 }

@Override
public void onPause() {
    super.onPause();
    mapView.onPause();
}

@Override
public void onResume() {
   super.onResume();
   mapView.onResume();
}

@Override
public void onDestroy() {
    super.onDestroy();
    mapView.onDestroy();
}

Answer 6

我不知道的是将包含com.google.android.gms.maps的库和其他类放在类路径上。

Answer 7

要扩展@ gaurav-jain Android项目给出的答案，请不要自动包含Google地图。您需要定位适当版本的Google API，而不是适当的Android版本。

project properties

在这里，您可以在Eclipse中看到一个Android项目。我右键单击了项目并选择了属性，然后点击了Android部分。您可以看到目标版本是Android 4.2。

在此项目中，Google地图将无法使用。如果我想使用地图，我需要将目标更改为Google API 4.2。

如果您未在列表中看到Google API，则需要使用SDK管理器下载并安装所需的版本

为什么我不能使用MapView？

7 个答案: