Question

我正在尝试从http://www.vogella.com/articles/AndroidGoogleMaps/article.html运行Google maps API v2的基本示例，但它会因错误而崩溃：

02-10 14:51:38.292: E/AndroidRuntime(898): FATAL EXCEPTION: main
02-10 14:51:38.292: E/AndroidRuntime(898): java.lang.NoClassDefFoundError: com.google.android.gms.R$styleable
02-10 14:51:38.292: E/AndroidRuntime(898):  at com.google.android.gms.maps.GoogleMapOptions.createFromAttributes(Unknown Source)
02-10 14:51:38.292: E/AndroidRuntime(898):  at com.google.android.gms.maps.MapFragment.onInflate(Unknown Source)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.Activity.onCreateView(Activity.java:4716)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
02-10 14:51:38.292: E/AndroidRuntime(898):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.Activity.setContentView(Activity.java:1881)
02-10 14:51:38.292: E/AndroidRuntime(898):  at com.vogella.android.locationapi.maps.MainActivity.onCreate(MainActivity.java:23)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.Activity.performCreate(Activity.java:5104)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.os.Handler.dispatchMessage(Handler.java:99)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.os.Looper.loop(Looper.java:137)
02-10 14:51:38.292: E/AndroidRuntime(898):  at android.app.ActivityThread.main(ActivityThread.java:5039)
02-10 14:51:38.292: E/AndroidRuntime(898):  at java.lang.reflect.Method.invokeNative(Native Method)
02-10 14:51:38.292: E/AndroidRuntime(898):  at java.lang.reflect.Method.invoke(Method.java:511)
02-10 14:51:38.292: E/AndroidRuntime(898):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-10 14:51:38.292: E/AndroidRuntime(898):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-10 14:51:38.292: E/AndroidRuntime(898):  at dalvik.system.NativeStart.main(Native Method)

我的代码......

清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.vogella.android.locationapi.maps"
    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.vogella.android.locationapi.maps.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="{tried both browser api key and android api keys here}" />
    </application>

</manifest>

布局：

<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>

的活动：

package com.vogella.android.locationapi.maps;

import android.app.Activity;
import android.os.Bundle;
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 {
    static final LatLng HAMBURG = new LatLng(53.558, 9.927);
    static final LatLng KIEL = new LatLng(53.551, 9.993);
    private GoogleMap map;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
    Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG).title("Hamburg"));
    Marker kiel =
        map.addMarker(new MarkerOptions()
            .position(KIEL)
            .title("Kiel")
            .snippet("Kiel is cool")
            .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));

    // Move the camera instantly to hamburg with a zoom of 15.
    map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));

    // Zoom in, animating the camera.
    map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
    }

}

在目标Google API 17的AVD上运行它，它立即崩溃。

Answer 1

我注意到您没有为Google Play服务添加保护功能，Google Maps V2 api要求此功能运行。

问题可能是由于AVD不支持Google Play服务。尝试在设备上运行。

也许这些可以帮助

Missing Google Play Services from AVD

https://stackoverflow.com/a/14282347/1788333

Answer 2

你应该扩展 FragmentActivity 而不是Activity。

在您的活动中使用此功能： map =（（SupportMapFragment）getSupportFragmentManager（）。findFragmentById（R.id.map））。getMap（）;

在片段标记中的xml中写下：

类= “com.google.android.gms.maps。的 SupportMapFragment ”

谷歌地图api v2

2 个答案: