Android应用程序会在AsyncTask中丢弃VM Aborting

时间:2011-12-10 14:39:46

标签: android android-asynctask

我正在使用Eclipse + SDK 8编写Android应用程序,在Android 2.2模拟器上运行。

我创建了一个AsyncTask来处理后台冗长的任务。以下是代码:

    public class taskSavingFavourite extends AsyncTask<Void, Void, Integer> 
{       
    @Override
    protected Integer doInBackground(Void... arg0) 
    {
        List<MainListClass> mList = new ArrayList<MainListClass>();
        String s = null;
        int addedCount= 0;

        if (mainListSubTabSelectedTab == 0) mList = buildingList;
        else mList = storeList;
        if (mList == null) return 0;
        try
        {
            for (int i = 0; i < mList.size(); i ++)
            {
                if (mList.get(i).checked == 1) 
                {
                    s = htFavourite.get(mList.get(i).id+"-"+mList.get(i).type);
                    if (s == null) 
                    {
                        addedCount ++;
                        if (!favouriteList.equals(""))
                            favouriteList = favouriteList + ";";
                        favouriteList = favouriteList +
                                        mList.get(i).id + "-" + mList.get(i).type + ":" +
                                        mList.get(i).name;
                        htFavourite.put(mList.get(i).id + "-" + mList.get(i).type, 
                                        mList.get(i).name);
                        mList.get(i).favourite = 1;
                    }
                }
                publishProgress();
            }
            if (addedCount != 0)
            {
                SharedPreferences settings = getSharedPreferences("MGS_PRIVATE_DATA", 0);
                SharedPreferences.Editor editor = settings.edit();
                editor.putString("favouriteList", favouriteList);
                //Commit the edits!
                editor.commit();
            }
        }
        catch (Exception e) {};
        return addedCount;
    }
}

问题是:当mList很大(1000件以上)时,当前的Activity将被强制关闭并返回启动器Activity。我确信它没有崩溃,因为恼人的“不幸的......”对话框没有出来。

我检查了logcat,当它发生时,它总是有这样的消息:

12-10 14:10:28.772: D/dalvikvm(976): threadid=9: sending two SIGSTKFLTs to threadid=2 (tid=977) to cause debuggerd dump 
12-10 14:10:30.842: D/dalvikvm(976): Sent, pausing to let debuggerd run 
12-10 14:10:38.903: D/dalvikvm(976): Continuing 12-10 14:10:38.903: E/dalvikvm(976): **VM aborting***

我不确定这是否是android bug或者我错过了什么。

1 个答案:

答案 0 :(得分:0)

好吧,我想我找到了原因:永远不要在AsyncTask:DoinBackground 中使用紧密循环。

所以我只是把Thread.Sleep(1)放在循环中,然后一切都像魅力一样。也许这只会发生在模拟器中,而不是真正的设备(我只是猜测)。