[英]Error while running Google maps API V2 example
我正在嘗試在這里做例子https://developers.google.com/maps/documentation/android/start
我正在Eclipse中工作,代碼中沒有顯示錯誤。 我已鏈接google-play-services-lib並將項目構建目標設置為Google API的最新版本。 我輸入了我的API密鑰,並在控制台的“服務”菜單中打開了Google Maps android api v2。 有任何想法為什么我會收到此錯誤嗎? 我正在真實設備上測試,運行nexus 5的棒棒糖(5.0.1)
我的logcat在下面
FATAL EXCEPTION: main
02-23 17:47:48.927: E/AndroidRuntime(8735): Process: com.juliette.basicgooglemap, PID: 8735
02-23 17:47:48.927: E/AndroidRuntime(8735): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.juliette.basicgooglemap/com.juliette.basicgooglemap.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.ActivityThread.access$800(ActivityThread.java:144)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.os.Handler.dispatchMessage(Handler.java:102)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.os.Looper.loop(Looper.java:135)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.ActivityThread.main(ActivityThread.java:5221)
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.reflect.Method.invoke(Native Method)
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.reflect.Method.invoke(Method.java:372)
02-23 17:47:48.927: E/AndroidRuntime(8735): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
02-23 17:47:48.927: E/AndroidRuntime(8735): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
02-23 17:47:48.927: E/AndroidRuntime(8735): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.view.LayoutInflater.inflate(LayoutInflater.java:482)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
02-23 17:47:48.927: E/AndroidRuntime(8735): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:377)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.Activity.setContentView(Activity.java:2144)
02-23 17:47:48.927: E/AndroidRuntime(8735): at com.juliette.basicgooglemap.MainActivity.onCreate(MainActivity.java:11)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.Activity.performCreate(Activity.java:5933)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
02-23 17:47:48.927: E/AndroidRuntime(8735): ... 10 more
02-23 17:47:48.927: E/AndroidRuntime(8735): Caused by: android.app.Fragment$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
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.Fragment.instantiate(Fragment.java:618)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.Fragment.instantiate(Fragment.java:582)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2108)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.Activity.onCreateView(Activity.java:5282)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)
02-23 17:47:48.927: E/AndroidRuntime(8735): ... 19 more
02-23 17:47:48.927: E/AndroidRuntime(8735): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.maps.MapFragment" on path: DexPathList[[zip file "/data/app/com.juliette.basicgooglemap-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
02-23 17:47:48.927: E/AndroidRuntime(8735): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
02-23 17:47:48.927: E/AndroidRuntime(8735): at android.app.Fragment.instantiate(Fragment.java:604)
02-23 17:47:48.927: E/AndroidRuntime(8735): ... 23 more
02-23 17:47:48.927: E/AndroidRuntime(8735): Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.Class.classForName(Native Method)
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
02-23 17:47:48.927: E/AndroidRuntime(8735): at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
02-23 17:47:48.927: E/AndroidRuntime(8735): ... 25 more
02-23 17:47:48.927: E/AndroidRuntime(8735): Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
這是清單
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.juliette.basicgooglemap"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<!-- The following two permissions are not required to use
Google Maps Android API v2, but are recommended. -->
<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"/>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".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.gms.version"
android:value="@integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="API_KEY"/>
<uses-library android:name="com.google.android.maps" />
</application>
</manifest>
這是我的主要活動
package com.juliette.basicgooglemap;
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);
}
}
和布局
<?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.SupportMapFragment"/>
任何建議都將不勝感激,我很困惑。
可能是由於未正確導入庫引起的,請按照此鏈接中的步驟進行操作
如果仍無法解決,並且您已正確設置了庫,則可能是因為proguard可能剝離了播放服務。 為了避免這種情況,請在proguard-project.txt中添加以下內容
-keep class * extends java.util.ListResourceBundle { protected Object[][] getContents(); } -keep public class com.google.android.gms.common.internal.safeparcel.SafeParcelable { public static final *** NULL; } -keepnames @com.google.android.gms.common.annotation.KeepName class * -keepclassmembernames class * { @com.google.android.gms.common.annotation.KeepName *; } -keepnames class * implements android.os.Parcelable { public static final ** CREATOR; }
您可能沒有添加密鑰,我看到的是“ API_KEY”字符串而不是密鑰,它應該是這樣的(顯然密鑰會有所不同)
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AZzaSyDhkhNotUseFullKey49ylKD2bw1HM" />
您在AndroidManifest.xml中丟失了這些信息,
<permission
android:name="com.juliette.basicgooglemap.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.juliette.basicgooglemap.permission.MAPS_RECEIVE" />
也添加此:
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
接下來設置你的布局和代碼像這樣的帖子,你沒有使用正確的片段。
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