使用谷歌地图 API 使我在 Android 工作室中的应用程序崩溃

Question

我有一个使用 Google 地图 API 的应用程序。我非常努力地想弄清楚为什么我的应用程序在它开始运行的那一刻就崩溃并显示一个弹出窗口，“不幸的是，myApplicaiton 已停止。”我花了很多时间试图看看我应该在哪里查看代码。

这是我项目的 Gradle：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

这是我的模块应用程序的 Gradle：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.example.myApplication"
        minSdkVersion 15
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    sourceSets { main { assets.srcDirs = ['src/main/assets', 'src/main/assets/'] } }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.3'
    compile files('libs/google-play-services.jar')
    compile files('libs/android-support-4.0.jar')
}

这里是代码（MainActivity.java:89-95）：

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        setContentView(R.layout.activity_main);         //(MainActivity.java:93)
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
                .permitAll().build();

这是错误日志：

12-13 15:26:35.724    7875-7875/com.example.myApplication E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.NoClassDefFoundError: com.google.android.gms.R$styleable
            at com.google.android.gms.maps.GoogleMapOptions.createFromAttributes(Unknown Source)
            at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
            at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2158)
            at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:297)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
            at android.app.Activity.setContentView(Activity.java:1881)
            at com.example.selflocation.MainActivity.onCreate(MainActivity.java:93)
            at android.app.Activity.performCreate(Activity.java:5104)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
            at android.app.ActivityThread.access$600(ActivityThread.java:141)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5039)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
            at dalvik.system.NativeStart.main(Native Method)

这是我的 android 清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.selflocation"
    android:versionCode="2"
    android:versionName="1.0.1" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <permission
        android:name="in.wptrafficanalyzer.locationingooglemapv2.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-permission android:name="in.wptrafficanalyzer.locationingooglemapv2.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-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.WAKE_LOCK"/>
    <uses-permission android:name="android.permission.GET_TASKS" />
    <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/logo"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.myApplication.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>
        <activity android:name="com.example.myApplication.SetHomeLocation" >
        </activity>

        <receiver android:name="com.example.myApplication.BootUpReceiver" >
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />

                <category android:name="android.intent.category.HOME" />
            </intent-filter>
        </receiver>

        <receiver
            android:name="com.example.myApplication.MyAdminReceiver"
            android:permission="android.permission.BIND_DEVICE_ADMIN" >
            <meta-data
                android:name="android.app.device_admin"
                android:resource="@xml/admin" />

            <intent-filter>
                <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
            </intent-filter>
        </receiver>

    <meta-data
            android:name="com.google.android.gms.version"
            android:value="4242000" >
        </meta-data>
        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="xxxxxxxxxxxx" />
    </application>

</manifest>

Answer 1

Google Play Services 必须作为一个 Android 库包含在内，而不仅仅是一个 jar 文件。

你可以替换

compile files('libs/google-play-services.jar')

有

compile 'com.google.android.gms:play-services:6.5.+'

或者从 $SDK_HOME/extras/google/google_play_services/libproject/google-play-services_lib 导入作为 android 项目，尽管您可能必须创建 gradle 构建文件，因为不包括在内。