private async Task StartGeodatabaseGeneration()
{
// Create a task for generating a geodatabase (GeodatabaseSyncTask).
_gdbSyncTask = await GeodatabaseSyncTask.CreateAsync(_featureServiceUri);
// Get the current extent of the red preview box.
Envelope extent = MyMapView.GraphicsOverlays.First().Graphics.First().Geometry as Envelope;
// Get the default parameters for the generate geodatabase task.
GenerateGeodatabaseParameters generateParams = await _gdbSyncTask.CreateDefaultGenerateGeodatabaseParametersAsync(extent);
// Create a generate geodatabase job.
_generateGdbJob = _gdbSyncTask.GenerateGeodatabase(generateParams, _gdbPath);
// Handle the progress changed event (to show progress bar).
_generateGdbJob.ProgressChanged += (sender, e) =>
{
UpdateProgressBar();
};
// Show the progress bar.
MyProgressBar.Visibility = Visibility.Visible;
// Start the job.
_generateGdbJob.Start();
// Get the result.
Geodatabase resultGdb = await _generateGdbJob.GetResultAsync();
// Hide the progress bar.
MyProgressBar.Visibility = Visibility.Hidden;
// Do the rest of the work.
await HandleGenerationCompleted(resultGdb);
}
private async Task StartGeodatabaseGeneration()
{
// Update geodatabase path.
_gdbPath = $"{Path.GetTempFileName()}.geodatabase";
// Create a task for generating a geodatabase (GeodatabaseSyncTask).
_gdbSyncTask = await GeodatabaseSyncTask.CreateAsync(_featureServiceUri);
// Get the current extent of the red preview box.
Envelope extent = _myMapView.GraphicsOverlays.First().Graphics.First().Geometry as Envelope;
// Get the default parameters for the generate geodatabase task.
GenerateGeodatabaseParameters generateParams = await _gdbSyncTask.CreateDefaultGenerateGeodatabaseParametersAsync(extent);
// Create a generate geodatabase job.
_generateGdbJob = _gdbSyncTask.GenerateGeodatabase(generateParams, _gdbPath);
// Handle the progress changed event (to show progress bar).
_generateGdbJob.ProgressChanged += GenerateGdbJob_ProgressChanged;
// Start the job.
_generateGdbJob.Start();
// Get the result.
Geodatabase resultGdb = await _generateGdbJob.GetResultAsync();
// Do the rest of the work.
await HandleGenerationStatusChange(_generateGdbJob, resultGdb);
}
private async void HandleGenerationStatusChange(GenerateGeodatabaseJob job)
{
JobStatus status = job.Status;
// If the job completed successfully, add the geodatabase data to the map
if (status == JobStatus.Succeeded)
{
// Clear out the existing layers
myMapView.Map.OperationalLayers.Clear();
// Get the new geodatabase
Geodatabase resultGdb = await job.GetResultAsync();
// Loop through all feature tables in the geodatabase and add a new layer to the map
foreach (GeodatabaseFeatureTable table in resultGdb.GeodatabaseFeatureTables)
{
// Create a new feature layer for the table
FeatureLayer _layer = new FeatureLayer(table);
// Add the new layer to the map
myMapView.Map.OperationalLayers.Add(_layer);
}
// Best practice is to unregister the geodatabase
await _gdbSyncTask.UnregisterGeodatabaseAsync(resultGdb);
// Tell the user that the geodatabase was unregistered
ShowStatusMessage("Since no edits will be made, the local geodatabase has been unregistered per best practice.");
// Re-enable the generate button
myGenerateButton.Enabled = true;
}
// See if the job failed
if (status == JobStatus.Failed)
{
// Create a message to show the user
string message = "Generate geodatabase job failed";
// Show an error message (if there is one)
if (job.Error != null)
{
message += ": " + job.Error.Message;
}
else
{
// If no error, show messages from the job
var m = from msg in job.Messages select msg.Message;
message += ": " + string.Join <string>("\n", m);
}
// Show error message
ShowStatusMessage(message);
// Re-enable the generate button
myGenerateButton.Enabled = true;
}
}
private async void HandleGenerationStatusChange(GenerateGeodatabaseJob job)
{
JobStatus status = job.Status;
// If the job completed successfully, add the geodatabase data to the map
if (status == JobStatus.Succeeded)
{
// Clear out the existing layers
myMapView.Map.OperationalLayers.Clear();
// Get the new geodatabase
_resultGdb = await job.GetResultAsync();
// Loop through all feature tables in the geodatabase and add a new layer to the map
foreach (GeodatabaseFeatureTable table in _resultGdb.GeodatabaseFeatureTables)
{
// Create a new feature layer for the table
FeatureLayer layer = new FeatureLayer(table);
// Add the new layer to the map
myMapView.Map.OperationalLayers.Add(layer);
}
// Enable editing features
_readyForEdits = EditState.Ready;
// Update the help label
myHelpLabel.Text = "2. Tap a point feature to select";
}
// See if the job failed
if (status == JobStatus.Failed)
{
// Create a message to show the user
string message = "Generate geodatabase job failed";
// Show an error message (if there is one)
if (job.Error != null)
{
message += ": " + job.Error.Message;
}
else
{
// If no error, show messages from the job
foreach (JobMessage m in job.Messages)
{
// Get the text from the JobMessage and add it to the output string
message += "\n" + m.Message;
}
}
// Show the message
ShowStatusMessage(message);
}
}
private async void HandleGenerationStatusChange(GenerateGeodatabaseJob job)
{
JobStatus status = job.Status;
// Job が成功したら作成した ローカル ジオデータベース をマップに追加する
if (status == JobStatus.Succeeded)
{
// 既存のレイヤーをクリア
//myMapView.Map.OperationalLayers.Clear();
myMapView.Map.OperationalLayers.RemoveAt(0);
// 新しいローカル ジオデータベース を取得
_resultGdb = await job.GetResultAsync();
mGdbFeatureTable = _resultGdb.GeodatabaseFeatureTables.FirstOrDefault();
// テーブから新しいフィーチャ レイヤを作成する
FeatureLayer layer = new FeatureLayer(mGdbFeatureTable);
// 新しいレイヤーをマップに追加する
myMapView.Map.OperationalLayers.Add(layer);
// 編集機能を有効にする
_readyForEdits = EditState.Ready;
}
// ジオデータベースの作成ジョブに失敗した時
if (status == JobStatus.Failed)
{
// エラーメッセージの作成
string message = "ジオデータベースの作成に失敗";
// エラーメッセージを表示する（存在する場合）
if (job.Error != null)
{
message += ": " + job.Error.Message;
}
else
{
// エラーがなければ、ジョブからのメッセージを表示する
foreach (JobMessage m in job.Messages)
{
// JobMessage からテキストを取得し、出力文字列に追加します
message += "\n" + m.Message;
}
}
// メッセージを表示する
ShowStatusMessage(message);
}
}
private async Task StartGeodatabaseGeneration()
{
// Update the geodatabase path.
_gdbPath = $"{Path.GetTempFileName()}.geodatabase";
// Create a task for generating a geodatabase (GeodatabaseSyncTask).
_gdbSyncTask = await GeodatabaseSyncTask.CreateAsync(_featureServiceUri);
// Get the (only) graphic in the map view.
Graphic redPreviewBox = myMapView.GraphicsOverlays.First().Graphics.First();
// Get the current extent of the red preview box.
Envelope extent = redPreviewBox.Geometry as Envelope;
// Get the default parameters for the generate geodatabase task.
GenerateGeodatabaseParameters generateParams = await _gdbSyncTask.CreateDefaultGenerateGeodatabaseParametersAsync(extent);
// Create a generate geodatabase job.
GenerateGeodatabaseJob generateGdbJob = _gdbSyncTask.GenerateGeodatabase(generateParams, _gdbPath);
// Show the progress bar.
myProgressBar.IsVisible = true;
// Handle the progress changed event with an inline (lambda) function to show the progress bar.
generateGdbJob.ProgressChanged += (sender, e) =>
{
// Get the job.
GenerateGeodatabaseJob job = (GenerateGeodatabaseJob)sender;
// Update the progress bar.
UpdateProgressBar(job.Progress);
};
// Start the job.
generateGdbJob.Start();
// Get the result.
_resultGdb = await generateGdbJob.GetResultAsync();
// Hide the progress bar.
myProgressBar.IsVisible = false;
// Handle the job completion.
HandleGenerationStatusChange(generateGdbJob);
}
private async Task StartGeodatabaseGeneration()
{
// Create a task for generating a geodatabase (GeodatabaseSyncTask).
_gdbSyncTask = await GeodatabaseSyncTask.CreateAsync(_featureServiceUri);
// Get the (only) graphic in the map view.
Graphic redPreviewBox = MyMapView.GraphicsOverlays.First().Graphics.First();
// Get the current extent of the red preview box.
Envelope extent = redPreviewBox.Geometry as Envelope;
// Get the default parameters for the generate geodatabase task.
GenerateGeodatabaseParameters generateParams = await _gdbSyncTask.CreateDefaultGenerateGeodatabaseParametersAsync(extent);
// Create a generate geodatabase job.
GenerateGeodatabaseJob generateGdbJob = _gdbSyncTask.GenerateGeodatabase(generateParams, _gdbPath);
// Handle the progress changed event with an inline (lambda) function to show the progress bar.
generateGdbJob.ProgressChanged += (sender, e) =>
{
// Update the progress bar.
UpdateProgressBar(generateGdbJob.Progress);
};
// Show the progress bar.
MyProgressBar.Visibility = Visibility.Visible;
// Start the job.
generateGdbJob.Start();
// Get the result of the job.
_resultGdb = await generateGdbJob.GetResultAsync();
// Hide the progress bar.
MyProgressBar.Visibility = Visibility.Collapsed;
// Do the rest of the work.
HandleGenerationCompleted(generateGdbJob);
}
private async Task StartGeodatabaseGeneration()
{
_generateButton.Enabled = false;
// Update geodatabase path.
_gdbPath = $"{Path.GetTempFileName()}.geodatabase";
// Create a task for generating a geodatabase (GeodatabaseSyncTask).
_gdbSyncTask = await GeodatabaseSyncTask.CreateAsync(_featureServiceUri);
// Get the (only) graphic in the map view.
Graphic redPreviewBox = _myMapView.GraphicsOverlays.First().Graphics.First();
// Get the current extent of the red preview box.
Envelope extent = redPreviewBox.Geometry as Envelope;
// Get the default parameters for the generate geodatabase task.
GenerateGeodatabaseParameters generateParams = await _gdbSyncTask.CreateDefaultGenerateGeodatabaseParametersAsync(extent);
// Create a generate geodatabase job.
_gdbGenJob = _gdbSyncTask.GenerateGeodatabase(generateParams, _gdbPath);
// Handle the progress changed event.
_gdbGenJob.ProgressChanged += GenerateGdbJob_ProgressChanged;
// Show the progress bar.
_progressBar.Hidden = false;
// Start the job.
_gdbGenJob.Start();
// Get the result.
_resultGdb = await _gdbGenJob.GetResultAsync();
// Do the rest of the work.
HandleGenerationCompleted(_gdbGenJob);
}
private async Task GetLocalGeodatabase()
{
// Get the path to the local geodatabase for this platform (temp directory, for example)
string localGeodatabasePath = GetGdbPath();
try
{
// See if the geodatabase file is already present
if (File.Exists(localGeodatabasePath))
{
// If the geodatabase is already available, open it, hide the progress control, and update the message
_localGeodatabase = await Geodatabase.OpenAsync(localGeodatabasePath);
_progressBar.Visibility = Android.Views.ViewStates.Gone;
_messageTextBlock.Text = "Using local geodatabase from '" + _localGeodatabase.Path + "'";
}
else
{
// Create a new GeodatabaseSyncTask with the uri of the feature server to pull from
GeodatabaseSyncTask gdbTask = await GeodatabaseSyncTask.CreateAsync(new Uri(SyncServiceUrl));
// Create parameters for the task: layers and extent to include, out spatial reference, and sync model
GenerateGeodatabaseParameters gdbParams = await gdbTask.CreateDefaultGenerateGeodatabaseParametersAsync(_extent);
gdbParams.OutSpatialReference = _mapView.SpatialReference;
gdbParams.SyncModel = SyncModel.Layer;
gdbParams.LayerOptions.Clear();
gdbParams.LayerOptions.Add(new GenerateLayerOption(0));
gdbParams.LayerOptions.Add(new GenerateLayerOption(1));
// Create a geodatabase job that generates the geodatabase
GenerateGeodatabaseJob generateGdbJob = gdbTask.GenerateGeodatabase(gdbParams, localGeodatabasePath);
// Handle the job changed event and check the status of the job; store the geodatabase when it's ready
generateGdbJob.JobChanged += (s, e) =>
{
// Call a function to update the progress bar
RunOnUiThread(() => UpdateProgressBar(generateGdbJob.Progress));
// See if the job succeeded
if (generateGdbJob.Status == JobStatus.Succeeded)
{
RunOnUiThread(() =>
{
// Hide the progress control and update the message
_progressBar.Visibility = Android.Views.ViewStates.Gone;
_messageTextBlock.Text = "Created local geodatabase";
});
}
else if (generateGdbJob.Status == JobStatus.Failed)
{
RunOnUiThread(() =>
{
// Hide the progress control and report the exception
_progressBar.Visibility = Android.Views.ViewStates.Gone;
_messageTextBlock.Text = "Unable to create local geodatabase: " + generateGdbJob.Error.Message;
});
}
};
// Start the generate geodatabase job
_localGeodatabase = await generateGdbJob.GetResultAsync();
}
}
catch (Exception ex)
{
// Show a message for the exception encountered
RunOnUiThread(() =>
{
ShowStatusMessage("Generate Geodatabase", "Unable to create offline database: " + ex.Message);
});
}
}
private async Task GetLocalGeodatabase()
{
// Get the path to the local geodatabase for this platform (temp directory, for example)
var localGeodatabasePath = GetGdbPath();
try
{
// See if the geodatabase file is already present
if (File.Exists(localGeodatabasePath))
{
// If the geodatabase is already available, open it, hide the progress control, and update the message
_localGeodatabase = await Geodatabase.OpenAsync(localGeodatabasePath);
LoadingProgressBar.Visibility = Visibility.Collapsed;
MessageTextBlock.Text = "Using local geodatabase from '" + _localGeodatabase.Path + "'";
}
else
{
// Create a new GeodatabaseSyncTask with the uri of the feature server to pull from
var uri = new Uri(SyncServiceUrl);
var gdbTask = await GeodatabaseSyncTask.CreateAsync(uri);
// Create parameters for the task: layers and extent to include, out spatial reference, and sync model
var gdbParams = await gdbTask.CreateDefaultGenerateGeodatabaseParametersAsync(_extent);
gdbParams.OutSpatialReference = MyMapView.SpatialReference;
gdbParams.SyncModel = SyncModel.Layer;
gdbParams.LayerOptions.Clear();
gdbParams.LayerOptions.Add(new GenerateLayerOption(0));
gdbParams.LayerOptions.Add(new GenerateLayerOption(1));
// Create a geodatabase job that generates the geodatabase
GenerateGeodatabaseJob generateGdbJob = gdbTask.GenerateGeodatabase(gdbParams, localGeodatabasePath);
// Handle the job changed event and check the status of the job; store the geodatabase when it's ready
generateGdbJob.JobChanged += (s, e) =>
{
// See if the job succeeded
if (generateGdbJob.Status == JobStatus.Succeeded)
{
this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
// Hide the progress control and update the message
LoadingProgressBar.Visibility = Visibility.Collapsed;
MessageTextBlock.Text = "Created local geodatabase";
});
}
else if (generateGdbJob.Status == JobStatus.Failed)
{
this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
// Hide the progress control and report the exception
LoadingProgressBar.Visibility = Visibility.Collapsed;
MessageTextBlock.Text = "Unable to create local geodatabase: " + generateGdbJob.Error.Message;
});
}
};
// Start the generate geodatabase job
_localGeodatabase = await generateGdbJob.GetResultAsync();
}
}
catch (Exception ex)
{
// Show a message for the exception encountered
this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
MessageDialog dialog = new MessageDialog("Unable to create offline database: " + ex.Message);
dialog.ShowAsync();
});
}
}
private async Task GetLocalGeodatabase()
{
string localGeodatabasePath = GetGdbPath();
try
{
// See if the geodatabase file is already present.
if (File.Exists(localGeodatabasePath))
{
// If the geodatabase is already available, open it, hide the progress control, and update the message.
_localGeodatabase = await Geodatabase.OpenAsync(localGeodatabasePath);
_progressBar.Hidden = true;
_statusLabel.Text = "Using local geodatabase.";
}
else
{
// Create a new GeodatabaseSyncTask with the URI of the feature server to pull from.
Uri uri = new Uri(SyncServiceUrl);
GeodatabaseSyncTask gdbTask = await GeodatabaseSyncTask.CreateAsync(uri);
// Create parameters for the task: layers and extent to include, out spatial reference, and sync model.
GenerateGeodatabaseParameters gdbParams = await gdbTask.CreateDefaultGenerateGeodatabaseParametersAsync(_extent);
gdbParams.OutSpatialReference = _mapView.SpatialReference;
gdbParams.SyncModel = SyncModel.Layer;
gdbParams.LayerOptions.Clear();
gdbParams.LayerOptions.Add(new GenerateLayerOption(0));
gdbParams.LayerOptions.Add(new GenerateLayerOption(1));
// Create a geodatabase job that generates the geodatabase.
GenerateGeodatabaseJob generateGdbJob = gdbTask.GenerateGeodatabase(gdbParams, localGeodatabasePath);
// Handle the job changed event and check the status of the job; store the geodatabase when it's ready.
generateGdbJob.JobChanged += (s, e) =>
{
// Call a function to update the progress bar.
InvokeOnMainThread(() => UpdateProgressBar(generateGdbJob.Progress));
switch (generateGdbJob.Status)
{
// See if the job succeeded.
case JobStatus.Succeeded:
InvokeOnMainThread(() =>
{
// Hide the progress control and update the message.
_progressBar.Hidden = true;
_statusLabel.Text = "Created local geodatabase";
});
break;
case JobStatus.Failed:
InvokeOnMainThread(() =>
{
// Hide the progress control and report the exception.
_progressBar.Hidden = true;
_statusLabel.Text = "Unable to create local geodatabase: " + generateGdbJob.Error.Message;
});
break;
}
};
// Start the generate geodatabase job.
_localGeodatabase = await generateGdbJob.GetResultAsync();
}
}
catch (Exception ex)
{
// Show a message for the exception encountered.
InvokeOnMainThread(() => { ShowMessage("Generate Geodatabase", "Unable to create offline database: " + ex.Message, "OK"); });
}
}