我收到有关我的应用程序行为异常的报告。我显示了一个同步成功对话框，让用户知道他们的数据已同步。一些用户曾说他们未获得同步成功对话框，并且进度栏仅停留在100％/ 100％，因此需要按回退以退出。
这个问题不容易重现，实际上，我无法真正做到，但是我们创建的日志记录了例外情况，显示了问题所在。
using System;
using System.Collections.Generic;
using Android.App;
using Android.OS;
using Android.Views;
using Android.Widget;
using Classes;
using Microsoft.AppCenter.Crashes;
using Services;
using System.Threading;
using Helpers;
namespace Dialogs
{
public class ProgressBarDialog : DialogFragment
{
private ProgressBar progressBar;
private OnProgressFinished onProgressFinished;
int _countSeconds;
object _lock = new object();
private TextView progressText;
private LinearLayout titleBackground;
private Button yes, no;
private static string title, description;
private OnItemClick callback;
public interface OnItemClick
{
void OnItemClick(int id);
}
public interface OnProgressFinished
{
void OnProgressFinished(int id);
}
public static ProgressBarDialog NewInstance(Bundle bundle, string passedTitle, string passedDesc)
{
var fragment = new ProgressBarDialog();
title = passedTitle;
description = passedDesc;
return fragment;
}
public override void OnAttach(Android.Content.Context context)
{
base.OnAttach(context);
try
{
callback = (OnItemClick)context;
}
catch (Exception e)
{
Crashes.TrackError(e);
}
try
{
onProgressFinished = (OnProgressFinished)context;
}
catch (Exception e)
{
Crashes.TrackError(e);
}
}
public override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
//return customview for the fragment
View view = inflater.Inflate(Resource.Layout.ProgressDialog, container, false);
progressBar = view.FindViewById<ProgressBar>(Resource.Id.progressBar1);
progressText = view.FindViewById<TextView>(Resource.Id.progressText);
progressBar.Max = 100;
SampleDatabase db = new SampleDatabase();
SampleRESTFulService save = new SampleRESTFulService(Activity);
List<Sample> samples = db.Get();
int sampleCount = samples.Count;
if (sampleCount > 0)
{
Activity.RunOnUiThread(async () =>
{
using (var cancellationTokenSource = new CancellationTokenSource())
{
cancellationTokenSource.CancelAfter(TimeSpan.FromMinutes(5));
try
{
int successfullySynced = 0;
foreach (Sample sample in samples.ToArray())
{
cancellationTokenSource.Token.ThrowIfCancellationRequested();
if (sample.Tag.Equals("NR"))
{
db.Delete(sample);
}
bool isSuccess = await save.SaveAsync(sample, cancellationTokenSource.Token);
if (isSuccess)
{
++successfullySynced;
db.Delete(sample);
samples.Remove(sample);
progressBar.Progress = successfullySynced * 100 / sampleCount;
progressText.Text = progressBar.Progress.ToString() + "%";
}
else if (isSuccess == false && cancellationTokenSource.IsCancellationRequested)
{
onProgressFinished.OnProgressFinished(1);
Dismiss();
}
CheckProgress(progressBar.Progress);
}
}
catch (Exception ex)
{
LoggerHelper.LogUser("ProgressBarDialog OnCreateView Error", ex.ToString());
Console.WriteLine(ex);
}
if (cancellationTokenSource.IsCancellationRequested)
{
Dismiss();
onProgressFinished.OnProgressFinished(1);
}
else if (progressBar != null && progressBar.Progress < 100)
{
Dismiss();
onProgressFinished.OnProgressFinished(1);
}
}
});
}
return view;
}
// This is the function where the exception is kicking off.
public void CheckProgress(int progress)
{
try
{
lock (_lock)
{
if (progress >= 100)
{
Dismiss();
onProgressFinished.OnProgressFinished(0);
}
}
}
catch (Exception ex)
{
LoggerHelper.LogUser("ProgressBarDialog CheckProgress Error", ex.ToString());
}
}
}
}
我得到的例外是：
4/10/2020 1:15:58 PM]-System.ArgumentException：句柄必须有效。参数名称：实例在<8cb56b2f65354c9f9f9fbb25da78a6cf09>：0在Android.Runtime.JNIEnv.CallObjectMethod（System.IntPtr jobject，System.IntPtr jmethod，Android.Runtime.JValue * parms）中的[0x0000e]，在：0中在Android.Content.ISharedPreferencesEditorInvoker.PutString（System.String键，System.String值）中的[0x0006c] ：: 0在：0中的Activities.SampleListActivity.OnProgressFinished（System.Int32 id）[0x00154]中在Dialogs.ProgressBarDialog.CheckProgress（System.Int32进度）中的[0x00022]：0中，>
我的回调函数如下：
public void OnProgressFinished(int id) { if (id == 1) { if (!IsFinishing && informDialog != null && IsForeground) { editor.PutString("Name", ""); editor.Commit(); updateAdapter(); informDialog.Dismiss(); SampleDatabase sDb = new SampleDatabase(); if(sDb.Get().ToArray().Count() > 0) { TrySyncAgain(); } else { if (!IsFinishing && informDialog != null && IsForeground) { editor.PutString("PASSEDHERD", ""); editor.Commit(); AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.SetTitle("Sync Successful"); alert.SetMessage("You're samples have been synced successfully."); alert.SetPositiveButton("Yes", (senderAlert, args) => { LoggerHelper.LogUser(passedHerd.Tech_ID, string.Format("{0} clicked OK on sync successful.", passedHerd.Tech_ID)); LoggerHelper.Log(passedHerd.Herd_Test_ID, String.Format("User: {0}, pressed Yes on sync successful", passedHerd.Tech_ID)); End(true); }); Dialog dialog = alert.Create(); dialog.Show(); } } } } else if (id == 0) { if (!IsFinishing && informDialog != null && IsForeground) { editor.PutString("PASSEDHERD", ""); editor.Commit(); AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.SetTitle("Sync Successful"); alert.SetMessage("You're samples have been synced successfully."); alert.SetPositiveButton("Yes", (senderAlert, args) => { LoggerHelper.LogUser(passedHerd.Tech_ID, string.Format("{0} clicked OK on sync successful.", passedHerd.Tech_ID)); LoggerHelper.Log(passedHerd.Herd_Test_ID, String.Format("User: {0}, pressed Yes on sync successful", passedHerd.Tech_ID)); End(true); }); Dialog dialog = alert.Create(); dialog.Show(); } } }我尝试将Null传递到回调中，但由于需要Int值，因此无法接收。
任何帮助将不胜感激。谢谢
我收到有关我的应用程序行为异常的报告。我显示了一个同步成功对话框，让用户知道他们的数据已同步。一些用户说他们没有获得同步...
尝试使用Firebase Testlab并安装Crashlytics。当用户应用崩溃时，这将帮助您实时查看。这对我有很大帮助