Android的明确意图引发NoClassDefFound错误

问题描述

我试图用一个明确的意图，以显示在我的Andr​​oid应用程序一个图形页面。虽然我看不出什么毛病我的code，我不断收到一个NoClassDefFoundError的当我想开始我的活动。  基本上，从我的主要活动（SetCriteria），我创建了明确的意图，当用户presses一个按钮：

I'm trying to use an explicit intent to display a MapView in my android app. Although I don't see anything wrong with my code, I keep getting a "NoClassDefFoundError" when I try to start my activity. Basically, from my main activity (SetCriteria), I create the explicit intent when user presses a button :

 Log.i(TAG, "Showing map..");
 try{
   Intent intentMap = new Intent(view.getContext(), AddLocation.class);
   startActivity(intentMap);
}catch(Throwable ex) {
   Log.e(TAG, "Error occured while trying to display map", ex);
}

我的LogCat中显示：

My LogCat displays:

 java.lang.NoClassDefFoundError: com.adm.AddLocation
 ...
 Caused by: java.lang.IllegalAccessError: Class ref in pre-verified class resolved to unexpected implementation

我的清单看起来是这样的：

My Manifest looks like this:

<application android:label="@string/app_name" android:icon="@drawable/ic_launcher_red">
    <uses-library android:name="com.google.android.maps"/>
    <activity android:name=".SetCriteria"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".AddLocation"
          android:label="@string/add_location">
    </activity>
</application>

我只有一个包：COM.ADM。那么，什么可能是错误的？我没有问题，使用意向（Intent.ACTION_VIEW，URI）推出了地图，但我想我处理地图的具体活动。

I have only one package: com.adm. So what could be wrong? I have no problem launching a map by using Intent(Intent.ACTION_VIEW, uri) but I want my specific activity dealing with the map.

推荐答案

您应该删除。（点）之前，你的类名中第二个活动的声明，所以它看起来像：

You should remove the "." (dot) before your class name in the second activity declaration, so it would look like:

<activity android:name="AddLocation" android:label="@string/add_location">

这篇关于Android的明确意图引发NoClassDefFound错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！