Jon Douglas JonDouglas

Diagnosing JIT / AOT Timings

After installing the .apk, open up an Android Device Monitor to the Logcat tab, or use adb logcat
Look for a log under ActivityManager that has the message Displayed Activity: <timing>

EX:

07-28 12:48:38.356: I/ActivityManager(769): Displayed com.myapplication.App1/md58adf3f2592a7497b73592b5e766304c2.MainActivity: +1s990ms

Code Name	Version	API Level	Release Date
None	1.0	1	2008-09-23
None	1.1	2	2009-02-09
Cupcake	1.5	3	2009-04-27
Donut	1.6	4	2009-09-15
Eclair	2.0-2.1	5-7	2009-10-26
Froyo	2.2-2.2.3	8	2010-05-20
Gingerbread	2.3-2.3.7	9-10	2010-12-06
Honeycomb	3.0-3.2.6	11-13	2011-02-22

Ideally if you took a Release .apk, anything in the lib/ABI should go into the respective /system/lib folder.

For example with a File->New Android Project

If I created a Release Aligned .apk, I should be able to extract it and view the following:

lib\armeabi-v7a

You may run into issues with downloading the m2repository when referencing a NuGet package of the Android Support Libraries / Google Play Services.

Example error:

One of the best ways to investigate a problematic Xamarin.Android Errors is to first ensure you have the proper tooling available:

One of the best ways to investigate a problematic Xamarin.Android Binding is to first ensure you have the proper tooling available:

	Thread uiThread;

	uiThread = Thread.CurrentThread; //Ensure this is called during a Main/UI thread call

	void WhatThreadAmI([CallerMemberName] string method = "", [CallerLineNumber] int line = 0)
	{
	Console.WriteLine("=========================");
	Console.WriteLine("=========================");
	Console.WriteLine("=========================");
	Console.WriteLine($"{method} - {line}" {IsMainThread}");

	<Application
	x:Class="UpgradeTest.WinPhone.App"
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
	xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone">

	<!--Application Resources-->
	<Application.Resources>
	<local:LocalizedStrings xmlns:local="clr-namespace:UpgradeTest.WinPhone" x:Key="LocalizedStrings"/>

	using System;
	using System.Collections.Generic;
	using System.IO;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Windows;
	using System.Windows.Controls;
	using UpgradeTest.Renderers;
	using UpgradeTest.WinPhone.Renderers;