DEV Community: sunny prasad

List Flutter learning resources

sunny prasad — Fri, 19 Jan 2024 05:22:12 +0000

Flutter week sessions:

Flutter best practice

sunny prasad — Sun, 07 Jan 2024 06:37:51 +0000

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Theme:
When you have your own color system/ design system use ThemeExtension and then use it like Theme.of(context).brandcolor

https://x.com/michael_lazebny/status/1744332972558369087?s=46&t=GiN0cMzBayRWLMzZ_zLQHg

LocalSend is my latest fav for local File transfer

sunny prasad — Tue, 07 Nov 2023 19:59:42 +0000

Earlier I started liking snapdrop because it allowed sending files from browser.

But I feel like LocalSend is even more easier. Its similarly cross platform. Open source and built with #Flutter

Add git GPG signing computer wide

sunny prasad — Tue, 07 Nov 2023 16:14:42 +0000

https://docs.github.com/en/authentication/managing-commit-signature-verification/telling-git-about-your-signing-key

How to write a new custom lint rule in flutter or dart

sunny prasad — Fri, 03 Nov 2023 17:37:43 +0000

All the logic for analysis of linter packages live in dart lang repo.
Specifically the following directory contains logic.

For eg avoid_empty_else is stored here

https://github.com/dart-lang/sdk/blob/9fa33d8acdff743fc7265d147abe9261deb149bc/pkg/linter/lib/src/rules/avoid_empty_else.dart#L27

My first OSS PR

sunny prasad — Fri, 03 Nov 2023 14:41:36 +0000

So, Today I have raised a PR that I think is good to get reviewed in official Flutter repo.

https://github.com/flutter/flutter/pull/137681

It was pretty simple, I had to add support for color and color blend mode on FadeInImage. Additionally I had to pass these to construction of Image object which already supported color and colorBlendMode. Added some tests reffering to other widgets and done.

I will be waiting for review on this one while hunting on working on another interesing PR. This time a bit more complicated to better my flutter skills.

Life updates:
Today I met a very close friend after a very long time. It was a nice day overall.

I have left my job and I am not sure what to do everyday

sunny prasad — Mon, 30 Oct 2023 12:04:05 +0000

It became incresingly hard to work with some folks and it was not work pressure related. I quit the job to reset the my mental state and get back the motivation to do something.

I think I should...

Do things that will favour me when I want to go back into job market
Visit and talk to everyone whom I have missed because of work

Item no. 2 is straight forward, I am anyways visiting home for Diwali.

Back to career related stuff. I have figured out a lot of things that I would like to or should do in the free time that I get.

Start solving leetcode
Read and implement architecture, testing and security of mobile apps
Build a couple of apps from my "App Ideas" notion doc using Flutter. and if someday it solves something for larger audience. Create an income stream out of them
Build a scaffold Flutter project to clear take home assignments like a pro.
Learn Android native and ios native to a certain depth by building something.
plus 10 other things that I would like to do.

I am open to straight forward advice here.

And I will write often to express about interesting things.

Btw, is it ok to use "dev.to" to express like a personal blog?

Unable to install an app

sunny prasad — Wed, 25 Jan 2023 13:43:10 +0000

Run
adb shell pm uninstall in.zestmoney.android.zestlife.crew
to uninstall the pkg fully.

Find SHA1 keys quickly from jks and apk

sunny prasad — Wed, 11 Dec 2019 11:02:44 +0000

xubuntu

Specs are

xubuntu 19.04
fresh android studio
fresh flutter installation

For this command to run we need keytool.

All the guides on the internet will ask you to go to jdk/bin.
However, Now android studio includes jdk as part of the installation.

So we can edit our .zshrc file and add JDK etc to the path.

Mine has platform tools, tools,flutter and studio's jdk added.

open zshrc
nano .zshrc

Paste these and change those paths as per your installation

# If you come from bash you might have to change your $PATH.
# export PATH=$HOME/bin:/usr/local/bin:$PATH

# Path to your oh-my-zsh installation.
export ZSH="/home/prasadsunny1/.oh-my-zsh"
export ANDROID_HOME="/home/prasadsunny1/Documents/sdks/android"
export PATH="/home/prasadsunny1/Documents/sdks/flutter/bin":$PATH
export PATH="/home/prasadsunny1/Documents/android-studio/jre/bin":$PATH

path=("${ANDROID_HOME}/platform-tools:${ANDROID_HOME}/tools" $path)

# Set name of the theme to load --- if set to "random", it will
# load a random theme each time oh-my-zsh is loaded, in which case,
# to know which specific one was loaded, run: echo $RANDOM_THEME
# See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
ZSH_THEME="robbyrussell"

run this command
keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android

you should get an output like this

➜  ~ keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android
Alias name: androiddebugkey
Creation date: 10 Dec, 2019
Entry type: PrivateKeyEntry
Certificate chain length: 1
Certificate[1]:
Owner: C=US, O=Android, CN=Android Debug
Issuer: C=US, O=Android, CN=Android Debug
Serial number: 1
Valid from: Tue Dec 10 23:52:27 IST 2019 until: Thu Dec 02 23:52:27 IST 2049
Certificate fingerprints:
     MD5:  xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx
     SHA1: xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx
     SHA256: xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx
Signature algorithm name: SHA1withRSA
Subject Public Key Algorithm: 2048-bit RSA key
Version: 1

Warning:
The JKS keystore uses a proprietary format. It is recommended to migrate to PKCS12 which is an industry standard format using "keytool -importkeystore -srckeystore /home/prasadsunny1/.android/debug.keystore -destkeystore /home/prasadsunny1/.android/debug.keystore -deststoretype pkcs12".

Here in the middle, you have your SHA1 key.

Find SHA1 from your apk

extract apk and get META_INF/**.RSA
find keytool inside androidstudio installation and open powershell there
run keytool -printcert -file name.RSA

That's all, Thaks for reading

Follow me on twitter http://twitter.com/prasadsunny1