//我目前正在尝试运行 android//studio 中提供的默认 map Activity 。我在 xml 文件中添加了我的 API key 并使用默认的 AVD//设备运行并收到以下错误(说我的应用程序在模拟器中停止工作)
//日志:
01-03 19:13:51.647 2399-2399/com.example.user.maptest I/art: Not late-enabling -Xcheck:jni (already on)
01-03 19:13:51.671 2399-2399/com.example.user.maptest W/System: ClassLoader referenced unknown path: /data/app/com.example.user.maptest-2/lib/x86
01-03 19:13:51.675 2399-2399/com.example.user.maptest I/GMPM: App measurement is starting up, version: 8487
01-03 19:13:51.675 2399-2399/com.example.user.maptest I/GMPM: To enable debug logging run: adb shell setprop log.tag.GMPM VERBOSE
01-03 19:13:51.758 2399-2399/com.example.user.maptest I/zzad: Making Creator dynamically
01-03 19:13:51.762 2399-2399/com.example.user.maptest W/System: ClassLoader referenced unknown path: /system/priv-app/PrebuiltGmsCore/lib/x86
01-03 19:13:51.830 2399-2399/com.example.user.maptest D/ChimeraCfgMgr: Reading stored module config
01-03 19:13:51.832 2399-2399/com.example.user.maptest D/ChimeraCfgMgr: Loading module com.google.android.gms.maps from APK /data/user/0/com.google.android.gms/app_chimera/chimera-module-root/module-a3e4fba11e705727c59ff3116ef21fa4834b9f56/MapsModule.apk
01-03 19:13:51.832 2399-2399/com.example.user.maptest D/ChimeraModuleLdr: Loading module APK /data/user/0/com.google.android.gms/app_chimera/chimera-module-root/module-a3e4fba11e705727c59ff3116ef21fa4834b9f56/MapsModule.apk
01-03 19:13:51.864 2399-2399/com.example.user.maptest D/ChimeraFileApk: Primary ABI of requesting process is x86
01-03 19:13:51.864 2399-2399/com.example.user.maptest D/ChimeraFileApk: Classloading successful. Optimized code found.
01-03 19:13:51.865 2399-2399/com.example.user.maptest W/System: ClassLoader referenced unknown path: /data/user/0/com.google.android.gms/app_chimera/chimera-module-root/module-a3e4fba11e705727c59ff3116ef21fa4834b9f56/native-libs/x86
01-03 19:13:51.953 2399-2399/com.example.user.maptest I/Google Maps Android API: Google Play services client version: 8487000
01-03 19:13:51.970 2399-2399/com.example.user.maptest I/Google Maps Android API: Google Play services package version: 8489470
01-03 19:13:52.122 2399-2399/com.example.user.maptest W/ContextImpl: Failed to ensure /sdcard/Android/data/com.example.user.maptest/cache: java.lang.SecurityException: Invalid mkdirs path: /storage/self/primary/Android/data/com.example.user.maptest/cache
01-03 19:13:52.124 2399-2399/com.example.user.maptest D/AndroidRuntime: Shutting down VM
01-03 19:13:52.124 2399-2399/com.example.user.maptest E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.user.maptest, PID: 2399
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.user.maptest/com.example.user.maptest.MapsActivity}: android.view.InflateException: Binary XML file line #1: Binary XML file line #1: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #1: Binary XML file line #1: Error inflating class fragment
at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393)
at android.app.Activity.setContentView(Activity.java:2166)
at com.example.user.maptest.MapsActivity.onCreate(MapsActivity.java:20)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:782)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393)
at android.app.Activity.setContentView(Activity.java:2166)
at com.example.user.maptest.MapsActivity.onCreate(MapsActivity.java:20)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.io.File.mkdir()' on a null object reference
at com.google.maps.api.android.lib6.gmm6.m.ad.a(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.c.h.a(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.c.ao.a(Unknown Source)
at com.google.maps.api.android.lib6.e.bd.a(Unknown Source)
at com.google.maps.api.android.lib6.e.ev.a(Unknown Source)
at com.google.maps.api.android.lib6.e.z.a(Unknown Source)
at com.google.maps.api.android.lib6.e.y.a(Unknown Source)
at com.google.android.gms.maps.internal.u.onTransact(SourceFile:107)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.maps.internal.IMapFragmentDelegate$zza$zza.onCreateView(Unknown Source)
at com.google.android.gms.maps.SupportMapFragment$zza.onCreateView(Unknown Source)
at com.google.android.gms.dynamic.zza$4.zzb(Unknown Source)
at com.google.android.gms.dynamic.zza.zza(Unknown Source)
at com.google.android.gms.dynamic.zza.onCreateView(Unknown Source)
at com.google.android.gms.maps.SupportMapFragment.onCreateView(Unknown Source)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1036)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1226)
at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1328)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2284)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:314)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:79)
at android.view.LayoutInflater.createViewFromTag(Layout
//安卓 list :
<!--
The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
Google Maps Android API v2, but you must specify either coarse or fine
location permissions for the 'MyLocation' functionality.
-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<!--
The API key for Google Maps-based APIs is defined as a string resource.
(See the file "res/values/google_maps_api.xml").
Note that the API key is linked to the encryption key used to sign the APK.
You need a different API key for each encryption key, including the release key that is used to
sign the APK for publishing.
You can define the keys for the debug and release targets in src/debug/ and src/release/.
-->
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="@string/google_maps_key" />
<activity
android:name=".MapsActivity"
android:label="@string/title_activity_maps">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
// Gradle : 应用插件:'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.example.user.maptest"
minSdkVersion 19
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.google.android.gms:play-services:8.4.0'
}
apply plugin: 'com.google.gms.google-services'
最佳答案
你的问题的底线是你的logcat中的这一行
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.io.File.mkdir()' on a null object reference
at com.google.maps.api.android.lib6.gmm6.m.ad.a(Unknown Source)
您需要一张 SD 卡才能在 play-services:8.4.0 中运行您的代码。请看this有关您当前问题的更多信息。
编辑:这个问题已经解决了。将 Google Play 服务升级到 9.0.83 将解决此问题。
关于java - 尝试在 Android Studio 中运行默认 map Activity 时出现模拟器错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34583353/
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