// This override is called only once during the activity's lifecycle, when it is created.
protected override async void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// instantiate adapter
var acquaintanceCollectionAdapter = new AcquaintanceCollectionAdapter();
// load the items
await acquaintanceCollectionAdapter.LoadAcquaintances();
// instantiate the layout manager
var layoutManager = new LinearLayoutManager(this);
// set the content view
SetContentView(Resource.Layout.Main);
// setup the action bar
SetSupportActionBar(FindViewById<Toolbar>(Resource.Id.toolbar));
// ensure that the system bar color gets drawn
Window.AddFlags(WindowManagerFlags.DrawsSystemBarBackgrounds);
// set the title of both the activity and the action bar
Title = SupportActionBar.Title = "Acquaintances";
// instantiate/inflate the RecyclerView
var recyclerView = (RecyclerView)FindViewById(Resource.Id.acquaintanceRecyclerView);
// set RecyclerView's layout manager
recyclerView.SetLayoutManager(layoutManager);
// set RecyclerView's adapter
recyclerView.SetAdapter(acquaintanceCollectionAdapter);
}
// This override is called only once during the activity's lifecycle, when it is created.
protected override async void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// instantiate adapter
_Adapter = new AcquaintanceCollectionAdapter();
// load the items
await _Adapter.LoadAcquaintances();
// instantiate the layout manager
var layoutManager = new LinearLayoutManager(this);
// set the content view
SetContentView(Resource.Layout.AcquaintanceList);
// setup the action bar
SetSupportActionBar(FindViewById <Toolbar>(Resource.Id.toolbar));
// ensure that the system bar color gets drawn
Window.AddFlags(WindowManagerFlags.DrawsSystemBarBackgrounds);
// set the title of both the activity and the action bar
Title = SupportActionBar.Title = "Acquaintances";
// instantiate/inflate the RecyclerView
var recyclerView = (RecyclerView)FindViewById(Resource.Id.acquaintanceRecyclerView);
// set RecyclerView's layout manager
recyclerView.SetLayoutManager(layoutManager);
// set RecyclerView's adapter
recyclerView.SetAdapter(_Adapter);
}
async Task LoadAcquaintances()
{
_SwipeRefreshLayout.Refreshing = true;
try
{
// load the items
await _Adapter.LoadAcquaintances();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine($"Error getting acquaintances: {ex.Message}");
//set alert for executing the task
var alert = new Android.App.AlertDialog.Builder(this);
alert.SetTitle("Error getting acquaintances");
alert.SetMessage("Ensure you have a network connection, and that a valid backend service URL is present in the app settings.");
alert.SetNegativeButton("OK", (senderAlert, args) => {
// an empty delegate body, because we just want to close the dialog and not take any other action
});
//run the alert in UI thread to display in the screen
RunOnUiThread(() => {
alert.Show();
});
}
finally
{
_SwipeRefreshLayout.Refreshing = false;
}
}
async protected override void OnRestart()
{
base.OnRestart();
await _Adapter.LoadAcquaintances();
}