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Android Lifecycle

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Luke Malpass
2018-08-24 17:09:38 +01:00
parent 5d8f44e2ae
commit 076d0e94d4
33 changed files with 6699 additions and 0 deletions
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206
Xamarin Android/Android Lifecycle/AndroidLifecycle/MainActivity.cs Normal file
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using Android.App;
using Android.OS;
using Android.Support.Design.Widget;
using Android.Support.V7.App;
using Android.Views;
using System;
namespace AndroidLifecycle
{
[Activity(Label = "@string/app_name", Theme = "@style/AppTheme.NoActionBar", MainLauncher = true)]
public class MainActivity : AppCompatActivity
{
//
// A good reference starting point for the actibity life cycle is here
// https://developer.android.com/reference/android/app/Activity
//
// Events on application creation
// =========================================
// ~~~~~~~~~~~~~~~~ OnCreate
// ~~~~~~~~~~~~~~~~ OnStart
// ~~~~~~~~~~~~~~~~ OnPostCreate
// ~~~~~~~~~~~~~~~~ OnStateNotSaved
// ~~~~~~~~~~~~~~~~ OnResume
// ~~~~~~~~~~~~~~~~ OnPostResume
//
//
// Events on back button press
// =========================================
// ~~~~~~~~~~~~~~~~ Finish
// ~~~~~~~~~~~~~~~~ OnPause
// ~~~~~~~~~~~~~~~~ OnStop
// ~~~~~~~~~~~~~~~~ OnDestroy
//
//
// Events on re-open after back button
// =========================================
// ~~~~~~~~~~~~~~~~ OnCreate
// ~~~~~~~~~~~~~~~~ OnStart
// ~~~~~~~~~~~~~~~~ OnPostCreate
// ~~~~~~~~~~~~~~~~ OnStateNotSaved
// ~~~~~~~~~~~~~~~~ OnResume
// ~~~~~~~~~~~~~~~~ OnPostResume
//
//
// Events on Home / Menu button press
// =========================================
// ~~~~~~~~~~~~~~~~ OnUserLeaveHint
// ~~~~~~~~~~~~~~~~ OnPause
// ~~~~~~~~~~~~~~~~ OnSaveInstanceState
// ~~~~~~~~~~~~~~~~ OnStop
//
//
// Events on re-open after Home / Menu
// =========================================
// ~~~~~~~~~~~~~~~~ OnStateNotSaved
// ~~~~~~~~~~~~~~~~ OnRestart
// ~~~~~~~~~~~~~~~~ OnStart
// ~~~~~~~~~~~~~~~~ OnResume
// ~~~~~~~~~~~~~~~~ OnPostResume
//
//
// Instant Kill
// =========================================
// No guaranteed calls
//
//
// DONT USE DISPOSE or JavaFinalize (Slide 44 onwards)
// Use OnDestroy instead
// https://www.slideshare.net/Xamarin/advanced-memory-management-on-ios-and-android-mark-probst-and-rodrigo-kumpera
//
protected override void OnCreate(Bundle savedInstanceState)
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnCreate");
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_main);
Android.Support.V7.Widget.Toolbar toolbar = FindViewById<Android.Support.V7.Widget.Toolbar>(Resource.Id.toolbar);
SetSupportActionBar(toolbar);
FloatingActionButton fab = FindViewById<FloatingActionButton>(Resource.Id.fab);
fab.Click += FabOnClick;
}
public override void OnCreate(Bundle savedInstanceState, PersistableBundle persistentState)
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnCreate 2");
base.OnCreate(savedInstanceState, persistentState);
}
protected override void OnStart()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnStart");
base.OnStart();
}
protected override void OnPostCreate(Bundle savedInstanceState)
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnPostCreate");
base.OnPostCreate(savedInstanceState);
}
public override void OnPostCreate(Bundle savedInstanceState, PersistableBundle persistentState)
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnPostCreate 2");
base.OnPostCreate(savedInstanceState, persistentState);
}
public override void OnStateNotSaved()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnStateNotSaved");
base.OnStateNotSaved();
}
protected override void OnResume()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnResume");
base.OnResume();
}
protected override void OnPostResume()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnPostResume");
base.OnPostResume();
}
protected override void OnUserLeaveHint()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnUserLeaveHint");
base.OnUserLeaveHint();
}
protected override void OnPause()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnPause");
base.OnPause();
}
protected override void OnSaveInstanceState(Bundle outState)
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnSaveInstanceState");
base.OnSaveInstanceState(outState);
}
public override void OnSaveInstanceState(Bundle outState, PersistableBundle outPersistentState)
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnSaveInstanceState 2");
base.OnSaveInstanceState(outState, outPersistentState);
}
protected override void OnStop()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnStop");
base.OnStop();
}
protected override void OnRestart()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnRestart");
base.OnRestart();
}
protected override void OnDestroy()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ OnDestroy");
base.OnDestroy();
}
public override void Finish()
{
Console.WriteLine("~~~~~~~~~~~~~~~~ Finish");
base.Finish();
}
#region App Specific Code
public override bool OnCreateOptionsMenu(IMenu menu)
{
MenuInflater.Inflate(Resource.Menu.menu_main, menu);
return true;
}
public override bool OnOptionsItemSelected(IMenuItem item)
{
int id = item.ItemId;
if (id == Resource.Id.action_settings)
{
return true;
}
return base.OnOptionsItemSelected(item);
}
private void FabOnClick(object sender, EventArgs eventArgs)
{
View view = (View) sender;
Snackbar.Make(view, "Replace with your own action", Snackbar.LengthLong)
.SetAction("Action", (Android.Views.View.IOnClickListener)null).Show();
}
#endregion
}
}