编译和运行应用程序时的异常 - Android电子 [英] Android - exception when compiling and running the application

问题描述

我运行Eclipse和模拟器调试Android应用程序，并在应用程序的重新启动，我得到这个例外，

I am running a debug android application with eclipse and the simulator, and on a restarting of the app, I get this exception,

03-23 02:19:51.384: E/AndroidRuntime(605): FATAL EXCEPTION: main
03-23 02:19:51.384: E/AndroidRuntime(605): java.lang.RuntimeException: Unable to instantiate application android.app.Application: java.lang.NullPointerException
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.LoadedApk.makeApplication(LoadedApk.java:482)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3938)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.ActivityThread.access$1300(ActivityThread.java:123)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1185)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.os.Handler.dispatchMessage(Handler.java:99)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.os.Looper.loop(Looper.java:137)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.ActivityThread.main(ActivityThread.java:4424)
03-23 02:19:51.384: E/AndroidRuntime(605):  at java.lang.reflect.Method.invokeNative(Native Method)
03-23 02:19:51.384: E/AndroidRuntime(605):  at java.lang.reflect.Method.invoke(Method.java:511)
03-23 02:19:51.384: E/AndroidRuntime(605):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
03-23 02:19:51.384: E/AndroidRuntime(605):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
03-23 02:19:51.384: E/AndroidRuntime(605):  at dalvik.system.NativeStart.main(Native Method)
03-23 02:19:51.384: E/AndroidRuntime(605): Caused by: java.lang.NullPointerException
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:362)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.LoadedApk.getClassLoader(LoadedApk.java:305)
03-23 02:19:51.384: E/AndroidRuntime(605):  at android.app.LoadedApk.makeApplication(LoadedApk.java:474)
03-23 02:19:51.384: E/AndroidRuntime(605):  ... 11 more

但是，这并没有真正说得清在我的code发生的错误。任何想法，为什么这可能发生，以及如何prevent呢？

But this doesn't really say where the error happened in my code. Any idea why this might be happening and how to prevent it?

这是小应用程序的整个清单：

and this is the entire manifest of the small application:

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

    <uses-sdk android:minSdkVersion="15" />

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".ProblemioActivity"
            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=".AddProblemActivity"
            android:label="@string/add_problem" />

        <activity
            android:name=".LoginActivity"
            android:label="@string/login" />        

        <activity
            android:name=".MyProblemsActivity"
            android:label="@string/your_problems" /> 

        <activity
            android:name=".LogoutActivity"
            android:label="@string/app_name" /> 

        <activity
            android:name=".CreateProfileActivity"
            android:label="@string/create_account" />         

        <activity
            android:name=".ProblemActivity"
            android:label="@string/problem_page_header" />   

        <activity
            android:name=".SuggestSolutionActivity"
            android:label="@string/suggest_solution_header" />  

        <activity
            android:name=".SuggestedSolutionActivity"
            android:label="@string/suggested_solution_header" />          

        <activity
            android:name=".ViewSolutionsActivity"
            android:label="@string/view_solutions_header" />        

        <activity
            android:name=".TopicActivity"
            android:label="@string/topic_header" /> 

    </application>

</manifest>

谢谢！

推荐答案

我也得到这个excepiton。
我使用的Nexus S，并更新到4.0.3
我只是忽略此异常。

I also get this excepiton. I am using Nexus S, and update to 4.0.3 I just ignore this exception.

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