谷歌地圖V2 Android

Question

我想在Android應用程序上設置谷歌地圖。 我看到了很多qusestions關於這個錯誤，但沒有人真的回答我的prolem

我的錯誤文件

03-15 22:32:56.235: D/AndroidRuntime(6713): Shutting down VM 
03-15 22:32:56.235: W/dalvikvm(6713): threadid=1: thread exiting with uncaught exception (group=0x415b22a0) 
03-15 22:32:56.235: E/AndroidRuntime(6713): FATAL EXCEPTION: main 
03-15 22:32:56.235: E/AndroidRuntime(6713): java.lang.RuntimeException: Unable to start activity ComponentInfo{ant.project.myway/ant.project.myway.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2122) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.ActivityThread.access$600(ActivityThread.java:140) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1228) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.os.Looper.loop(Looper.java:137) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.ActivityThread.main(ActivityThread.java:4895) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at java.lang.reflect.Method.invoke(Method.java:511) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at dalvik.system.NativeStart.main(Native Method) 
03-15 22:32:56.235: E/AndroidRuntime(6713): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:306) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.Activity.setContentView(Activity.java:1912) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at ant.project.myway.MainActivity.onCreate(MainActivity.java:11) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.Activity.performCreate(Activity.java:5163) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2061) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  ... 11 more 
03-15 22:32:56.235: E/AndroidRuntime(6713): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: make sure class name exists, is public, and has an empty constructor that is public 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.support.v4.app.Fragment.instantiate(Fragment.java:401) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.support.v4.app.Fragment.instantiate(Fragment.java:369) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  ... 21 more 
03-15 22:32:56.235: E/AndroidRuntime(6713): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.SupportMapFragment 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  at android.support.v4.app.Fragment.instantiate(Fragment.java:391) 
03-15 22:32:56.235: E/AndroidRuntime(6713):  ... 24 more 
03-15 22:36:00.345: I/Process(6713): Sending signal. PID: 6713 SIG: 9 

所以這是我的清單

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

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

    <permission 
     android:name="ant.project.myway.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 

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

    <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"/> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/> 
    <!-- 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"/> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 

     <activity 
      android:name="ant.project.myway.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="@string/api_key"/> 
    </application> 

</manifest> 

我的活動

package ant.project.myway; 

import android.os.Bundle; 
import android.support.v4.app.FragmentActivity; 

public class MainActivity extends FragmentActivity { 

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

} 

而佈局

<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:name="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" /> 

</RelativeLayout> 

我看到了很多帖子，以解決此問題，

我不知道我的API密鑰是正確的，我在Ubuntu。 我去〜/ .android，我跑

keytool -list -alias androiddebugkey -keystore debug.keystore -storepass android -keypass android 

我得到了我的鑰匙，我設置my_key;在谷歌控制檯API密鑰ant.project.myway

我認爲這是正確的方式

感謝您的幫助

Answer 1

問題還要添加此權限您正在經歷與您的密鑰無關的任何方式，從您logcat輸出：

引起：android.support.v4.app.Fragment $ InstantiationException：無法實例化com.google.android.gms.maps.SupportMapFragment片段：確保類名存在，是公共的，並且有一個空的構造函數是公開的

基本上意味着在佈局實例化的那一刻，找不到SupportMapFragment類。是什麼讓我覺得你在引用google-play-services庫的方式上存在問題。

您可以看看我的blog post關於如何在您的應用程序中添加Google地圖以查找更多信息。

Answer 2

如果您在「ant.project.myway」packeage naem的幫助下生成了密鑰，那麼您應該只在權限標籤中使用此包名稱。

請試試這個...

<permission 
     android:name="ant.project.myway.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 

而且採用Android：名稱，而不是階級屬性

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

在您的清單

<uses-permission android:name="ant.project.myway.permission.MAPS_RECEIVE" /> 

Answer 3

您的活動補充一點：

GoogleMap map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();