Question

我制作了一个使用谷歌Android Maps API V2的应用程序，我已经按照Google提供的指南中的每一步进行操作，但它不能正常工作，每次尝试启动它时都会崩溃。所以我想知道这是什么问题？

MainActivity.java

package com.android.maptest;

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

public class MainActivity extends Activity {

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

activity_main.xml中

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
          android:id="@+id/map"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:name="com.google.android.gms.maps.MapFragment"/>

Maptest Manifest.xml

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

    <uses-sdk
        android:minSdkVersion="16"
        android:targetSdkVersion="16" />
    <permission
        android:name="com.android.maptest.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

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

    <uses-permission android:name="com.android.maptest.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" 
        android:debuggable="true" >
        <activity
            android:name="com.android.maptest.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="api_key" />
    </application>

</manifest>

logcat的

03-12 09:46:13.150: D/AndroidRuntime(1547): Shutting down VM

03-12 09:46:13.150: W/dalvikvm(1547): threadid=1: thread exiting with uncaught exception (group=0x410e22a0)

03-12 09:46:13.155: E/AndroidRuntime(1547): FATAL EXCEPTION: main

03-12 09:46:13.155: E/AndroidRuntime(1547): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.maptest/com.android.maptest.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at

android.app.ActivityThread.access $ 600（ActivityThread.java:140）

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.os.Handler.dispatchMessage(Handler.java:99)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.os.Looper.loop(Looper.java:137)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.ActivityThread.main(ActivityThread.java:4898)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at java.lang.reflect.Method.invokeNative(Native Method)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at java.lang.reflect.Method.invoke(Method.java:511)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at dalvik.system.NativeStart.main(Native Method)

03-12 09:46:13.155: E/AndroidRuntime(1547): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.view.LayoutInflater.inflate(LayoutInflater.java:466)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:308)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.Activity.setContentView(Activity.java:1924)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at com.android.maptest.MainActivity.onCreate(MainActivity.java:11)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.Activity.performCreate(Activity.java:5206)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)

03-12 09:46:13.155: E/AndroidRuntime(1547):     ... 11 more

03-12 09:46:13.155: E/AndroidRuntime(1547): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.Fragment.instantiate(Fragment.java:584)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.Fragment.instantiate(Fragment.java:552)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.Activity.onCreateView(Activity.java:4849)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)

03-12 09:46:13.155: E/AndroidRuntime(1547):     ... 20 more

03-12 09:46:13.155: E/AndroidRuntime(1547): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment

03-12 09:46:13.155: E/AndroidRuntime(1547):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)

03-12 09:46:13.155: E/AndroidRuntime(1547):     at android.app.Fragment.instantiate(Fragment.java:574)

03-12 09:46:13.155: E/AndroidRuntime(1547):     ... 23 more

03-12 09:51:21.560: I/Process(1547): Sending signal. PID: 1547 SIG: 9

Answer 1

您似乎未将Google Play服务库添加到项目中。

它位于{Android SDK}\extras\google\google_play_services

将其作为Android Library Project添加到Eclipse，然后将其添加到您的项目中。

Answer 2

我写了一篇关于如何将Google地图集成到您的应用程序中的博客文章：

Creating Google Map Application

从您的错误中看起来您没有正确执行博客指南的步骤2-3，将Google Play服务库添加到您的应用程序中。

如果您仔细按照指南中的步骤操作，最终会得到您在帖子末尾可以看到的最终结果。

Answer 3

我认为您已获得Google Maps Android API v2密钥并拥有Google Play services。如果您尚未安装它，请按照以下步骤解决此问题_

步骤1.您可以在Android SDK Manager下的Extras下方找到它 - Google Play服务的勾选复选框安装它，完成安装后，重启Eclipse。
步骤2.将Android SDK安装文件夹的google-play-services_lib文件夹下的named_ extras库添加到您的Android项目_

google service lib的路径_

{Your_Android_SDK_direct}\extras\google\google_play_services\libproject\google-play-services_lib 

Ex. Location of this lib on My system_ 
C:\Program Files\Android\android-sdk\extras\google\google_play_services\libproject\google-play-services_lib

我希望这能解决你的问题。

Answer 4

我添加：

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

将xml更改为

    <fragment
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/header"  />

解决了这个问题。我希望你也解决它！

Android Maps V2 App崩溃

4 个答案: