android + google API v2

Question

Я создаю приложение с использованием google map v2 на реальном устройстве, но у меня возникла проблема, и сила приложения закрывается, как исправить это после того, как я прочитал много и много решений, ни одна из них не работала со мной это что-то о фрагмента

файл манифеста

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

    <uses-sdk 
     android:minSdkVersion="12" 
     android:targetSdkVersion="17" /> 

    <permission 

     android:name="com.example.permission.MAPS_RECIEVE" 
     android:protectionLevel="signature"/> 

    <uses-permission android:name="com.example.permission.MAPS_RECIEVE" /> 
    <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="android.permission.ACCESS_COARSE_LOCATION"/> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 


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

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

     <meta-data 
      android:name="com.google.android.maps.v2.API_KEY" 
      android:value="AIzaSyC6Sh22y4wF_tKlrE2MljwZ7Cd9-8V-Nks"/> 
     <activity 
      android:name="com.example.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> 
    </application> 

</manifest> 

расположение файла

<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" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".MainActivity" > 

    <TextView 
     android:id="@+id/header" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="@string/hello_world" /> 

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

</RelativeLayout> 

Java файл

package com.example; 

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

public class MainActivity extends Activity { 

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


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

} 

журнал кот файл

04-08 02:29:33.500: D/dalvikvm(25400): Late-enabling CheckJNI 
04-08 02:29:33.535: D/dalvikvm(25400): Debugger has detached; object registry had 1 entries 
04-08 02:29:33.730: D/AndroidRuntime(25400): Shutting down VM 
04-08 02:29:33.730: W/dalvikvm(25400): threadid=1: thread exiting with uncaught exception (group=0x40d4b2a0) 
04-08 02:29:33.750: E/AndroidRuntime(25400): FATAL EXCEPTION: main 
04-08 02:29:33.750: E/AndroidRuntime(25400): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example/com.example.MainActivity}: android.view.InflateException: Binary XML file line #17: Error inflating class fragment 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.ActivityThread.access$600(ActivityThread.java:140) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.os.Handler.dispatchMessage(Handler.java:99) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.os.Looper.loop(Looper.java:137) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.ActivityThread.main(ActivityThread.java:4898) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at java.lang.reflect.Method.invokeNative(Native Method) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at java.lang.reflect.Method.invoke(Method.java:511) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at dalvik.system.NativeStart.main(Native Method) 
04-08 02:29:33.750: E/AndroidRuntime(25400): Caused by: android.view.InflateException: Binary XML file line #17: Error inflating class fragment 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:308) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.Activity.setContentView(Activity.java:1924) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at com.example.MainActivity.onCreate(MainActivity.java:12) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.Activity.performCreate(Activity.java:5206) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064) 
04-08 02:29:33.750: E/AndroidRuntime(25400): ... 11 more 
04-08 02:29:33.750: E/AndroidRuntime(25400): Caused by: android.app.Fragment$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 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.Fragment.instantiate(Fragment.java:584) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.Fragment.instantiate(Fragment.java:552) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.Activity.onCreateView(Activity.java:4849) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680) 
04-08 02:29:33.750: E/AndroidRuntime(25400): ... 21 more 
04-08 02:29:33.750: E/AndroidRuntime(25400): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment 
04-08 02:29:33.750: E/AndroidRuntime(25400): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
04-08 02:29:33.750: E/AndroidRuntime(25400): at android.app.Fragment.instantiate(Fragment.java:574) 
04-08 02:29:33.750: E/AndroidRuntime(25400): ... 24 more 

Answer 1

Ваша ошибка состоит в следующем:

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 

, что означает, что в принципе MapFragment класс не может быть найден. MapFragment является частью библиотеки google-play-services. Для этого вам необходимо импортировать google-play-services в свой workspace и затем ссылаться на него из вашего проекта, вы можете камыш, как это делается в first 3 steps в этом блоге я писал:

Google Maps API V2