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我认为我的问题可能与this stack post(Android远程方法数据限制)有关-仅返回的数据大小为661KB,并且文章说binder可以支持1MB。

情况如下:我有一个异步任务,它接受一个参数并调用一个 Web 服务,该服务返回一个由管道分隔的字符串和整数值组成的数组列表。然后我将这些值插入到 JAVA 数组列表中。在较小的数据集中,这很好用。在较大的数据集(即,这个 661KB 的数据集)中,我收到以下错误。

日志猫:

12-12 15:33:46.118: D/ProgressBar(14998): setProgress = 0
12-12 15:33:46.118: D/ProgressBar(14998): setProgress = 0, fromUser = false
12-12 15:33:46.118: D/ProgressBar(14998): mProgress = 0mIndeterminate = false, mMin = 0, mMax = 10000
12-12 15:33:46.168: I/Async_GetAllTechSched(14998): create soap object
12-12 15:33:46.168: I/Async_GetAllTechSched(14998): create envelope
12-12 15:33:46.168: I/Async_GetAllTechSched(14998): create transport
12-12 15:33:46.208: D/ProgressBar(14998): updateDrawableBounds: left = 0
12-12 15:33:46.208: D/ProgressBar(14998): updateDrawableBounds: top = 0
12-12 15:33:46.208: D/ProgressBar(14998): updateDrawableBounds: right = 144
12-12 15:33:46.208: D/ProgressBar(14998): updateDrawableBounds: bottom = 144
12-12 15:33:51.613: D/dalvikvm(14998): GC_FOR_ALLOC freed 6262K, 37% free 18436K/29244K, paused 24ms, total 24ms
12-12 15:33:51.944: D/dalvikvm(14998): GC_FOR_ALLOC freed 594K, 36% free 18880K/29244K, paused 29ms, total 30ms
12-12 15:33:51.974: D/dalvikvm(14998): GC_FOR_ALLOC freed <1K, 34% free 19556K/29244K, paused 29ms, total 29ms
12-12 15:33:52.084: D/dalvikvm(14998): GC_FOR_ALLOC freed 2307K, 27% free 21387K/29244K, paused 20ms, total 20ms
12-12 15:33:52.204: D/dalvikvm(14998): GC_FOR_ALLOC freed 1597K, 25% free 22117K/29244K, paused 22ms, total 22ms
12-12 15:33:52.244: I/Async_GetAllTechSched(14998): pre SOAP response
12-12 15:33:52.244: I/Async_GetAllTechSched(14998): post SOAP response
12-12 15:33:52.244: I/Async_GetAllTechSched(14998): PRE - add response to array
12-12 15:33:52.244: I/Async_GetAllTechSched(14998): POST - add response to array
12-12 15:33:52.244: I/Async_GetAllTechSched(14998): pre-intent setting
12-12 15:33:52.244: I/Async_GetAllTechSched(14998): post-intent setting
12-12 15:33:52.254: I/Async_GetAllTechSched(14998): dismiss progress
12-12 15:33:52.264: E/JavaBinder(14998): !!! FAILED BINDER TRANSACTION !!!
12-12 15:33:52.274: E/ViewRootImpl(14998): sendUserActionEvent() mView == null

这是正在执行的代码:

Log.i("Async_GetAllTechSched", "create soap object");
SoapObject request = new SoapObject(svc_NAMESPACE, svc_METHOD_NAME);

Log.i("Async_GetAllTechSched", "create envelope");
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
        SoapEnvelope.VER11);

envelope.dotNet = true;
envelope.setOutputSoapObject(request);

Log.i("Async_GetAllTechSched", "create transport");
HttpTransportSE androidHttpTransport = new HttpTransportSE(svc_URL);
androidHttpTransport.debug = true;

try {

    androidHttpTransport.call(svc_SOAP_ACTION, envelope);

    Log.i("Async_GetAllTechSched", "pre SOAP response");

    // use SoapObject instead of SoapPrimitave
    SoapObject response = (SoapObject) envelope.getResponse();

    Log.i("Async_GetAllTechSched", "post SOAP response");

    // get the count of the objects returned
    int cnt = response.getPropertyCount();

    Log.i("Async_GetAllTechSched", "PRE - add response to array");

    // loop through returned object and pull out the strings
    for (int i = 0; i < cnt; i++) {

        // there should always be at least one return value
        sResponse.add(response.getProperty(i).toString());
    }

    Log.i("Async_GetAllTechSched", "POST - add response to array");

} catch (Exception e) {

    e.printStackTrace();

    Log.e("!!ERROR!!", e.getMessage());

    }

    // Log.i("return in async", "*********");
    return sResponse;
}

@Override
protected void onPostExecute(ArrayList<String> result) {



ArrayList<String> arrAllTechSchedule = new ArrayList<String>();

    // get the count prior to the for loop
    int iCnt = result.size();

    //add the result of the web service call to the main scheduling page
    for (int i = 0; i < iCnt; i++) {
        //Log.i("i = ", Integer.toString(i));

        //add the data to a ArrayList so we can add that to the adapter 
        arrAllTechSchedule.add(result.get(i).toString());   
    }       

    // lets launch the main schedule windows

    Log.i("Async_GetAllTechSched", "pre-intent setting");

    Intent intent = new Intent(_Context, ScheduleSelectTech.class);
    intent.putStringArrayListExtra("arrAllTechSchedule", arrAllTechSchedule);
    intent.putExtra("mode", "READ-ONLY");

    Log.i("Async_GetAllTechSched", "post-intent setting");

    // terminate the progress bar
    progress.dismiss();

    Log.i("Async_GetAllTechSched", "dismiss progress");

    //launch the new form
    _Context.startActivity(intent);
}

一旦意图开始,它就不会到达新的活动。我在 onCreate 中有一个 LOG.i,它永远不会被击中。过程调用没有超时。当我尝试返回较少数据的相同代码时,我没有收到错误消息。即,当我在将数据返回到异步任务的语句上放置一个 SELECT TOP 100 时,它完全没问题。

我想我的问题是——如果返回的数据小于 1MB,为什么会出错?如果是因为 1MB 的限制,我还能做些什么来绕过这个限制或以某种方式压缩返回的数据?

预期的设计是这个初始调用带回名称和与这些名称相关的约会(管道分隔)。我显示了一个仅包含微调器中名称的不同列表(取自数组列表)。当用户单击微调器中的名称时,它将启动一个新活动,该活动将显示与该名称关联的所有约会(同样,所有数据都来自初始数组列表)。所有数据都在第一个异步任务中收集并进行操作。这样做是为了减少网络调用的数量。这个任务在 2 个 Web 服务调用中是可行的,所以如果这是一个很好的答案 - 我只是希望有一种不同/更好的方法来做到这一点,这样我就可以限制 Web 服务调用并减少用户等待时间。

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1 回答 1

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我还能做些什么来绕过这个限制吗

当然。不要使用Intent额外的数据来传递数据。任何一个:

  • 将其重组为具有多个片段的一个活动,因此数据永远不会离开活动,或者

  • 让需要数据的活动完成下载,或者

  • 非常非常小心地使用静态数据成员将数据从一个活动获取到下一个活动,不遗余力地避免内存泄漏

于 2013-12-12T21:41:25.720 回答