java - GoogleMap 未显示

Question

我尝试了大约 4 个小时，但没有发生。尝试开发一个应用程序来显示谷歌地图中的特定位置。

执行以下代码:

GooglemapsActivity.java

package com.example.gps2;

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 android.os.Bundle;

public class GooglemapsActivity extends MapActivity {

private MapView mapView;
private MapController mc;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    mapView = (MapView) findViewById(R.id.mapView);
    mc = mapView.getController();

    String coordinates[] = {"30", "71"};
    double lat = Double.parseDouble(coordinates[0]);
    double lng = Double.parseDouble(coordinates[1]);

    GeoPoint p = new GeoPoint(
            (int) (lat * 1E6),
            (int) (lng * 1E6));

    mc.animateTo(p);
    mc.setZoom(7);
    mapView.invalidate();
}

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

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"
>
<com.google.android.maps.MapView 
    android:id="@+id/mapView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:enabled="true"
    android:clickable="true"
    android:apiKey="AIzaSyBbGgoanloghVHc_rSHmS_yBG1Y7Ho7rsM"
    />
</LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.gps2"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="18" />

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

<permission
    android:name="com.example.gps2.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />

<uses-feature
    android:name="android.hardware.location"
    android:required="false" />
<uses-feature
    android:name="android.hardware.location.network"
    android:required="false" />
<uses-feature android:name="android.hardware.location.gps" />
<uses-feature
    android:name="android.hardware.wifi"
    android:required="false" />
<uses-feature
    android:glEsVersion="0x00020000"
    android:required="true" />

<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.example.gps2.GooglemapsActivity"
        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>

我正在使用 Google API 18(平台 4.3)

我使用 SHA1 代码“B5:EE:A3:80:7C:11:16:21:D7:EC:95:D1:FE:03:79:3D:4F:92: 生成了 android key : 2D:73;com.example.gps2"

我正在将 AVD 与目标 Google API 18 一起使用。

毕竟，谷歌地图没有显示。只是得到带有网格的屏幕。请建议我需要修复哪些地方才能使其正常工作。

日志猫:

01-12 07:01:20.958: D/dalvikvm(993): GC_FOR_ALLOC freed 533K, 18% free 3207K/3864K, paused 51ms, total 56ms
01-12 07:01:20.968: W/System.err(993): java.lang.IllegalStateException: Connection pool shut down.
01-12 07:01:20.968: W/System.err(993):  at org.apache.http.impl.conn.tsccm.ConnPoolByRoute.getEntryBlocking(ConnPoolByRoute.java:284)
01-12 07:01:20.968: W/System.err(993):  at org.apache.http.impl.conn.tsccm.ConnPoolByRoute$1.getPoolEntry(ConnPoolByRoute.java:238)
01-12 07:01:20.968: W/System.err(993):  at org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager$1.getConnection(ThreadSafeClientConnManager.java:176)
01-12 07:01:20.968: W/System.err(993):  at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:326)
01-12 07:01:20.968: W/System.err(993):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
01-12 07:01:20.968: W/System.err(993):  at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
01-12 07:01:20.968: W/System.err(993):  at android_maps_conflict_avoidance.com.google.common.io.android.AndroidHttpClient.execute(AndroidHttpClient.java:246)
01-12 07:01:20.978: W/System.err(993):  at android_maps_conflict_avoidance.com.google.common.io.android.GoogleHttpClient.executeWithoutRewriting(GoogleHttpClient.java:129)
01-12 07:01:20.978: W/System.err(993):  at android_maps_conflict_avoidance.com.google.common.io.android.GoogleHttpClient.execute(GoogleHttpClient.java:189)
01-12 07:01:20.978: W/System.err(993):  at android_maps_conflict_avoidance.com.google.common.io.android.GoogleHttpClient.execute(GoogleHttpClient.java:242)
01-12 07:01:20.978: W/System.err(993):  at android_maps_conflict_avoidance.com.google.common.io.android.AndroidHttpConnectionFactory$AndroidGoogleHttpConnection.getResponse(AndroidHttpConnectionFactory.java:132)
01-12 07:01:20.978: W/System.err(993):  at android_maps_conflict_avoidance.com.google.common.io.android.AndroidHttpConnectionFactory$AndroidGoogleHttpConnection.openDataInputStream(AndroidHttpConnectionFactory.java:153)
01-12 07:01:20.978: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.serviceRequests(DataRequestDispatcher.java:922)
01-12 07:01:20.978: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher$DispatcherServer.run(DataRequestDispatcher.java:1702)
01-12 07:01:20.988: W/System.err(993):  at java.lang.Thread.run(Thread.java:841)
01-12 07:01:31.467: W/MapActivity(993): Recycling dispatcher android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher@41702a70
01-12 07:01:31.507: V/MapActivity(993): Recycling map object.
01-12 07:01:32.387: I/MapActivity(993): Handling network change notification:CONNECTED
01-12 07:01:32.387: E/MapActivity(993): Couldn't get connection factory client
01-12 07:01:51.737: W/System.err(993): IOException processing: 26
01-12 07:01:51.737: W/System.err(993): java.io.IOException: Server returned: 3
01-12 07:01:51.748: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.map.BaseTileRequest.readResponseData(BaseTileRequest.java:115)
01-12 07:01:51.758: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.map.MapService$MapTileRequest.readResponseData(MapService.java:1473)
01-12 07:01:51.758: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.processDataRequest(DataRequestDispatcher.java:1117)
01-12 07:01:51.758: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.serviceRequests(DataRequestDispatcher.java:994)
01-12 07:01:51.758: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher$DispatcherServer.run(DataRequestDispatcher.java:1702)
01-12 07:01:51.758: W/System.err(993):  at java.lang.Thread.run(Thread.java:841)
01-12 07:02:15.378: W/System.err(993): IOException processing: 26
01-12 07:02:15.378: W/System.err(993): java.io.IOException: Server returned: 3
01-12 07:02:15.378: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.map.BaseTileRequest.readResponseData(BaseTileRequest.java:115)
01-12 07:02:15.389: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.map.MapService$MapTileRequest.readResponseData(MapService.java:1473)
01-12 07:02:15.389: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.processDataRequest(DataRequestDispatcher.java:1117)
01-12 07:02:15.389: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.serviceRequests(DataRequestDispatcher.java:994)
01-12 07:02:15.398: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher$DispatcherServer.run(DataRequestDispatcher.java:1702)
01-12 07:02:15.398: W/System.err(993):  at java.lang.Thread.run(Thread.java:841)
01-12 07:02:44.837: W/System.err(993): IOException processing: 26
01-12 07:02:44.837: W/System.err(993): java.io.IOException: Server returned: 3
01-12 07:02:44.837: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.map.BaseTileRequest.readResponseData(BaseTileRequest.java:115)
01-12 07:02:44.847: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.map.MapService$MapTileRequest.readResponseData(MapService.java:1473)
01-12 07:02:44.857: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.processDataRequest(DataRequestDispatcher.java:1117)
01-12 07:02:44.857: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.serviceRequests(DataRequestDispatcher.java:994)
01-12 07:02:44.857: W/System.err(993):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher$DispatcherServer.run(DataRequestDispatcher.java:1702)
01-12 07:02:44.867: W/System.err(993):  at java.lang.Thread.run(Thread.java:841)

谢谢...

Answer 1

您将如何在应用程序中实现 Google Maps API V2 搞得一团糟，并且将很多内容与 API V1 实现混淆了。

首先，要在 Activity 中显示谷歌地图，您通常会使用 MapFragment或SupportMapFragment在你的情况下( API < 11 )，所以你应该将其添加到 Activity 的 xml 布局中:

 <fragment
    android:name="com.google.android.gms.maps.SupportMapFragment"
    xmlns:map="http://schemas.android.com/apk/res-auto"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

接下来，您应该inherit来自FramgnetActivity在API V2与 MapActivity 相反来自API V1 ，所以你应该这样做:

public class MapActivity extends FragmentActivity {
 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.map_layout);
    }
}

最后，正如已经提到的，您应该在 list 文件中提供 API key ，而不是在 xml 文件中。因此，请将其放在 application 下的 list 中标签范围:

<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />

还有这个:

<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="Your Google Maps API V2 Key" />

您可以在我就此主题撰写的这篇博文中找到详细说明:

Google Maps API V2 Guide