Android的应用程序崩溃与NullPointerException异常的编舞 [英] Android app crashes with NullPointerException in ChoreoGrapher

问题描述

我有以下的code，试图在ListView创建一个简单的ListAdapter（我有这个code工作之前，这是我已经改变了的时候，唯一的地方）：

I have the following code, trying to create a simple ListAdapter in a ListView (I had this code working before and this is the only place I have changed something):

public BuddyListAdapter(Context context, HashMap<String, Buddy> hashMap) {
    buddyList = new ArrayList<Buddy>(hashMap.values());
    mInflater = LayoutInflater.from(context);
    ctx = context;
}

当单步调试，什么都不会发生，但在运行的时候，我收到了 NullPointerException异常在 ChoreoGrapher.doCallbacks ，当我创建一个空的的ArrayList ，它不会崩溃：

When stepping through, nothing happens, but when running, I get a NullPointerException in ChoreoGrapher.doCallbacks, when I create an empty ArrayList, it doesn't crash:

public BuddyListAdapter(Context context, HashMap<String, Buddy> hashMap) {
    buddyList = new ArrayList<Buddy>();
    mInflater = LayoutInflater.from(context);
    ctx = context;
}

什么是编舞和为什么它崩溃我的应用程序？

What is the ChoreoGrapher and why is it crashing my app?

我完全被卡住的可能是什么问题，或如何弄清楚什么是错的。 Eclipse调试器或崩溃的信息是不是真的帮助。

I am completely stuck on what could be the problem, or how to figure out what is wrong. The Eclipse debugger or crash information is not really helping.

整个堆栈跟踪如下：

Thread [<1> main] (Suspended (exception NullPointerException))  
    Choreographer.doCallbacks(int, long) line: 558  
    Choreographer.doFrame(long, int) line: 525  
    Choreographer$FrameDisplayEventReceiver.run() line: 711 
    Handler.handleCallback(Message) line: 615   
    Choreographer$FrameHandler(Handler).dispatchMessage(Message) line: 92   
    Looper.loop() line: 137 
    ActivityThread.main(String[]) line: 4745    
    Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]  
    Method.invoke(Object, Object...) line: 511  
    ZygoteInit$MethodAndArgsCaller.run() line: 786  
    ZygoteInit.main(String[]) line: 553 
    NativeStart.main(String[]) line: not available [native method]  

我也有一个处理程序中的主要活动。当它没有做任何事情，列表视图不会崩溃。不过，我删除它所有的回调，开扩的列表视图之前。

I also have a Handler in the main activity. When it is not doing anything, the listview doesn't crash. However, I remove all callbacks from it before openning the listview.

推荐答案

我又在另外的应用程序一样的东西。这似乎是由未处理的异常 getView 列表中的适配器造成的。

I am having the same thing again in another application. It seems to be caused by an unhandled exception in getView in the list adapter.

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