錯誤誇大類片段Android Map v2

Question

我知道這是一個重復的問題，但是上一篇文章的解決方案對我不起作用。 那就是為什么要問這個問題。

我正在嘗試在Android App中實現Google Map V2，但出現以下錯誤

06-26 19:24:51.035: E/AndroidRuntime(7679): FATAL EXCEPTION: main
06-26 19:24:51.035: E/AndroidRuntime(7679): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.titutorial.mapdemo/com.titutorial.mapdemo.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.ActivityThread.access$600(ActivityThread.java:140)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.os.Looper.loop(Looper.java:137)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.ActivityThread.main(ActivityThread.java:4898)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at java.lang.reflect.Method.invokeNative(Native Method)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at java.lang.reflect.Method.invoke(Method.java:511)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at dalvik.system.NativeStart.main(Native Method)
06-26 19:24:51.035: E/AndroidRuntime(7679): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.view.LayoutInflater.inflate(LayoutInflater.java:466)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:308)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.Activity.setContentView(Activity.java:1924)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at com.titutorial.mapdemo.MainActivity.onCreate(MainActivity.java:12)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.Activity.performCreate(Activity.java:5206)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
06-26 19:24:51.035: E/AndroidRuntime(7679):     ... 11 more
06-26 19:24:51.035: E/AndroidRuntime(7679): Caused by: android.app.Fragment$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
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.Fragment.instantiate(Fragment.java:584)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.Fragment.instantiate(Fragment.java:552)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.Activity.onCreateView(Activity.java:4849)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
06-26 19:24:51.035: E/AndroidRuntime(7679):     ... 20 more
06-26 19:24:51.035: E/AndroidRuntime(7679): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment
06-26 19:24:51.035: E/AndroidRuntime(7679):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-26 19:24:51.035: E/AndroidRuntime(7679):     at android.app.Fragment.instantiate(Fragment.java:574)
06-26 19:24:51.035: E/AndroidRuntime(7679):     ... 23 more

我遵循以下教程，

https://developers.google.com/maps/documentation/android/start#installing_the_google_maps_android_v2_api

我做了下面的事情

1. 安裝Google Play服務
2. 在Google控制台中創建了一個新應用，並獲得了Google Map API密鑰
3. 在eclipse中創建了新應用，並在AndroidManifest.xml中添加了權限和Google Map API密鑰
4. 已將Google Play服務庫添加到App
5. 將地圖添加到應用程序（main.xml）
6. 設置目標API級別17

在我的main.xml中

<?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.MapFragment"/>

這是我完整的源代碼https://github.com/railskarthi/MapDemo

Answer 1

在API 11+之后，我認為您現在必須用SupportMapFragment替換MapFragment 。 就像這樣：

<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"/>

在這里查看更多信息。 讓我知道你最近怎么樣。

Answer 2

我已經從git下載了您的項目，並檢查后發現您錯過了顯示地圖片段所需的行。

將您的主要活動代碼替換為以下代碼：-

public class MainActivity extends FragmentActivity {
private GoogleMap map;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
            .getMap();
}

Answer 3

如果您未在清單文件中為Google地圖定義API_KEY，也可能會發生這種情況。

看起來像這樣：

`....
<meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="<your key>" />
....`

在Google Developer Console中創建密鑰

Answer 4

請在清單文件中添加這些行

     <meta-data
        android:name="com.google.android.gms.version"
        android:value="@integer/google_play_services_version" />

    <!-- Goolge API Key -->
     <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="your Goolge API key" />