Solved: You need to use a Theme.AppCompat theme (or descendant) with this activity

One of those types of annoying errors that'll have you do a lot of work for something that's actually a 2 second job and no real effort.

If you find yourself with an app that crashes with no output, open logcat from visual studio and you'll notice that around the time of our app crash, there's a lot that states 'You need to use a Theme.AppCompat theme (or descendant) with this activity'. At first you'll start to look into the application and where you might change the theme, but in reality, if we go down that route, it could end up changing your entire app look and feel, something which will take a long time to put back to normal.

It turns out that the fix for this issue is actually to clean the Android solution and run again as normal, this will solve the crash and your error will disappear from logcat.

If you run into any issues after cleaning and running where this error is still present, comment below.

My particular setup when I got this error was as follows:

Minimum Android Version: 4.2 (API 17 - Jelly Bean)

Target Android Version: 7.0 (API 24 - Nougat)


Published at

Tags: Android,Xamarin

Luke Alderton

Comments

JM
Thanks Bro, this helped. Glad you posted this because I was stranded.
10/10/2018
Post a comment
Sit tight...
We're adding your comment.
Thank you.
Your comment has been added.
There's been a problem.
Please try again later.
Share with
Tags
Latest Comments
By Ecake68 on MVC forms in Umbraco
16 Dec 2018, 16:11 PM
By Wowob43 on Restrict Umbraco Back Office by IP
16 Dec 2018, 10:21 AM
By Rosax69 on How does DNS work? For dummies!
15 Dec 2018, 16:44 PM
By Aroli61 on Using SQL DataTables to speed up database performance
15 Dec 2018, 09:02 AM
By Xasus39 on MVC forms in Umbraco
14 Dec 2018, 20:04 PM
By Shane on Xamarin Forms multiple instances of same app open
14 Dec 2018, 05:33 AM
By Apabu19 on Displaying text on a 16x2 LCD screen with a Raspberry Pi
13 Dec 2018, 18:26 PM
By Anuri66 on Using SQL DataTables to speed up database performance
13 Dec 2018, 13:52 PM
Categories
App Development
Event
Game Development
Mapping
Modelling
Programming
Review
Robotics
Tutorial
Web Development