android - 无法显示谷歌地图

Question

我正在编写一个可以显示简单 Google map 的 android。一切似乎都很好。当我运行它时，它只显示带有 Google Logo 的灰色网格，但不显示 map 。

这是代码

       package com.example.myroute;

      import com.google.android.maps.MapView.LayoutParams;  
      import android.view.View;
      import android.widget.LinearLayout;
      import com.google.android.maps.MapActivity;
      import com.google.android.maps.MapView;
      import android.os.Bundle;
      import com.google.android.maps.GeoPoint;
      import com.google.android.maps.MapController;




   public class MapsActivity extends MapActivity 
     {    

MapView mapView;
MapController mc;
GeoPoint p;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    mapView = (MapView) findViewById(R.id.mapView);
    LinearLayout zoomLayout = (LinearLayout)findViewById(R.id.zoom);  
    View zoomView = mapView.getZoomControls(); 

    zoomLayout.addView(zoomView, 
        new LinearLayout.LayoutParams(
            LayoutParams.WRAP_CONTENT, 
            LayoutParams.WRAP_CONTENT)); 
    mapView.displayZoomControls(true);


    mc = mapView.getController();
    String coordinates[] = {"1.352566007", "103.78921587"};
    double lat = Double.parseDouble(coordinates[0]);
    double lng = Double.parseDouble(coordinates[1]);

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

    mc.animateTo(p);
    mc.setZoom(17); 
    mapView.invalidate();
    mapView.setStreetView(true);
}

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

这是 list 文件

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example.myroute"
  android:versionCode="1"
  android:versionName="1.0.0">

<uses-sdk
    android:minSdkVersion="7"
    android:targetSdkVersion="19" />

 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
 <permission
      android:name="com.example.myroute.permission.MAPS_RECEIVE"
      android:protectionLevel="signature"/>
    <uses-permission android:name="com.example.myroute.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"/>

    <uses-feature
          android:glEsVersion="0x00020000"
          android:required="true"/>
<application 
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name">

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

    <activity android:name="com.example.myroute.MapsActivity"
              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Main.xml文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
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:apiKey="AIzaSyABftaHTCmU-ooh7XH4LMBxLLcFEj5mY_8"
    android:clickable="true"

    />
<LinearLayout android:id="@+id/zoom"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentBottom="true" 
    android:layout_centerHorizontal="true" 
    /> 

</RelativeLayout>

Answer 1

通常灰色网格表示您的 API key 有问题。当您使用调试证书生成 API key 时，我建议您使用 sdk 中的 Keytool 创建一个新的签名 key 。

Original source