private static void SetExitAction()
{
App.ExitApplication = () =>
{
Process.KillProcess(Process.MyPid());
};
}
/**
* 当UncaughtException发生时会转入该函数来处理
*/
public void UncaughtException(Thread thread, Throwable ex)
{
if (!handleException(ex) && mDefaultHandler != null)
{
//如果用户没有处理则让系统默认的异常处理器来处理
mDefaultHandler.UncaughtException(thread, ex);
}
else
{
DownloadBookService.cancel(); // 取消任务
LogUtils.i("取消下载任务");
new Thread(() => {
Looper.Prepare();
ToastUtils.showSingleToast("哎呀，程序发生异常啦...");
Looper.Loop();
}).Start();
try {
Thread.Sleep(3000);
} catch (InterruptedException e) {
LogUtils.e("CrashHandler.InterruptedException--->" + e.ToString());
}
//退出程序
Process.KillProcess(Process.MyPid());
JavaSystem.Exit(1);
}
}
void Run()
{
Process.SetThreadPriority(ThreadPriority.Background);
if (_context._adapter == null)
{
_context.SendMessage(ConstantsCustomGallery.FETCH_STARTED);
}
File file;
var selectedImages = new List <long>();
if (_context._images != null)
{
for (int i = 0, l = _context._images.Count; i < l; i++)
{
var image = _context._images[i];
file = new File(image.Path);
if (file.Exists() && image.IsSelected)
{
selectedImages.Add(image.Id);
}
}
}
var cursor = _context.Application.ApplicationContext.ContentResolver.Query(
MediaStore.Images.Media.ExternalContentUri, _context._projection,
MediaStore.Images.Media.InterfaceConsts.BucketDisplayName + " =?", new string[] { _context._album },
MediaStore.Images.Media.InterfaceConsts.DateAdded);
if (cursor == null)
{
_context.SendMessage(ConstantsCustomGallery.ERROR);
return;
}
/*
* In case this runnable is executed to onChange calling loadImages,
* using countSelected variable can result in a race condition. To avoid that,
* tempCountSelected keeps track of number of selected images. On handling
* FETCH_COMPLETED message, countSelected is assigned value of tempCountSelected.
*/
int tempCountSelected = 0;
var temp = new List <Image>(cursor.Count);
if (cursor.MoveToLast())
{
do
{
if (Thread.Interrupted())
{
return;
}
var id = cursor.GetLong(cursor.GetColumnIndex(_context._projection[0]));
var name = cursor.GetString(cursor.GetColumnIndex(_context._projection[1]));
var path = cursor.GetString(cursor.GetColumnIndex(_context._projection[2]));
var isSelected = selectedImages.Contains(id);
if (isSelected)
{
tempCountSelected++;
}
file = null;
try
{
file = new File(path);
}
catch (Exception e)
{
Log.Debug("Exception : ", e.ToString());
}
if (file.Exists())
{
temp.Add(new Image(id, name, path, isSelected));
}
} while (cursor.MoveToPrevious());
}
cursor.Close();
if (_context._images == null)
{
_context._images = new List <Image>();
}
_context._images.Clear();
_context._images.AddRange(temp);
_context.SendMessage(ConstantsCustomGallery.FETCH_COMPLETED, tempCountSelected);
}
public override void Run()
{
Process.SetThreadPriority(ThreadPriority.Background);
base.Run();
}
/// <summary>
/// Executes the download in a separate thread
/// </summary>
internal void Run()
{
Process.SetThreadPriority(ThreadPriority.Background);
var state = new State(this.downloadInfo, this.downloaderService);
PowerManager.WakeLock wakeLock = null;
var finalStatus = ExpansionDownloadStatus.UnknownError;
try
{
var pm = this.context.GetSystemService(Context.PowerService).JavaCast <PowerManager>();
wakeLock = pm.NewWakeLock(WakeLockFlags.Partial, this.GetType().Name);
wakeLock.Acquire();
bool finished = false;
do
{
Log.Debug(Tag, "DownloadThread : initiating download for " + this.downloadInfo.FileName + " at " + this.downloadInfo.Uri);
var requestUri = new Uri(state.RequestUri);
var minute = (int)TimeSpan.FromMinutes(1).TotalMilliseconds;
var request = new HttpWebRequest(requestUri)
{
Proxy = WebRequest.DefaultWebProxy,
UserAgent = this.UserAgent,
Timeout = minute,
ReadWriteTimeout = minute,
AllowAutoRedirect = false
};
try
{
this.ExecuteDownload(state, request);
finished = true;
}
catch (RetryDownloadException)
{
// fall through
}
catch (Exception ex)
{
Debug.WriteLine("An exception in the download thread...");
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace);
throw;
}
finally
{
request.Abort();
}
}while (!finished);
Log.Debug(Tag, "DownloadThread : download completed for " + this.downloadInfo.FileName);
Log.Debug(Tag, "DownloadThread : at " + this.downloadInfo.Uri);
this.FinalizeDestinationFile(state);
finalStatus = ExpansionDownloadStatus.Success;
}
catch (StopRequestException error)
{
// remove the cause before printing, in case it contains PII
Debug.WriteLine(
"LVLDL Aborting request for download {0}: {1}", this.downloadInfo.FileName, error.Message);
Debug.WriteLine(error.StackTrace);
finalStatus = error.FinalStatus;
}
catch (Exception ex)
{
// sometimes the socket code throws unchecked exceptions
Debug.WriteLine("LVLDL Exception for {0}: {1}", this.downloadInfo.FileName, ex.Message);
finalStatus = ExpansionDownloadStatus.UnknownError;
}
finally
{
if (wakeLock != null)
{
wakeLock.Release();
}
CleanupDestination(state, finalStatus);
this.NotifyDownloadCompleted(
finalStatus, state.CountRetry, state.RetryAfter, state.RedirectCount, state.GotData);
}
}
/// <summary>
/// 退出APP
/// </summary>
public void ExitApp()
{
RemoveAllActivity();
Android.OS.Process.KillProcess(Process.MyPid());
Xamarin.Forms.Application.Current.Quit();
}