androiddevnotes

// Reference/Credit: https://stackoverflow.com/a/1385868
/**
 * Adapted from The Java Tutorial
 * Second Edition by Campione, M. and
 * Walrath, K.Addison-Wesley 1998
 */

/**
 * This is a demonstration of how NOT to write multi-threaded programs.
 * It is a program that purposely causes deadlock between two threads that

androiddevnotes

# You must first install apktool (https://github.com/iBotPeaches/Apktool) and android SDK
# and decompile apk using it 
# apktool d -rf my-app.apk

# then generate a key for sign in:
# keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000
rm signed-app.apk
apktool b -f -d com.myapp
jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore my-release-key.keystore com.myapp/dist/com.myapp.apk alias_name
zipalign -v 4 com.myapp/dist/com.myapp.apk signed-app.apk

androiddevnotes

1. Download latest apktool version.
2. Download the batch file and aapt.exe.
3. Create a folder anywhere in the PC and put all the apktool.jar, aapt.exe and the batch script in that folder.

4. Open command prompt.
5. Navigate to the folder where you placed apktool.jar, batch script and the aapt.exe.
6. Now, you need to install the file using the " IF " command.
7. Type the following command.

	apktool if name-of-the-app.apk

androiddevnotes

wget -c --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie"  https://download.oracle.com/otn-pub/java/jdk/12.0.2+10/e482c34c86bd4bf8b56c0b35558996b9/jdk-12.0.2_linux-x64_bin.tar.gz

androiddevnotes

import timber.log.Timber
import kotlin.properties.ReadOnlyProperty
import kotlin.reflect.KProperty

class MyClass {
    // This will automatically have the TAG "MyClass"
    private val log by timber()
    
    fun logSomething() {
        log.i("Hello")

androiddevnotes

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.regex.*;
import java.util.Arrays;
import java.util.Collection;

androiddevnotes

Install Android SDK CLI Ubuntu 20.04 WSL2 (Work in Progress)

Install Java 8

sudo apt install openjdk-8-jdk-headless

Android SDK

androiddevnotes

cd /home/<user>/
sudo apt-get install unzip
wget https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip
unzip sdk-tools-linux-4333796.zip -d Android
rm sdk-tools-linux-4333796.zip
sudo apt-get install -y lib32z1 openjdk-8-jdk
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export PATH=$PATH:$JAVA_HOME/bin
printf "\n\nexport JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64\nexport PATH=\$PATH:\$JAVA_HOME/bin" >> ~/.bashrc
cd Android/tools/bin

androiddevnotes

Install Android SDK CLI Ubuntu 20.04 WSL2 (Work in Progress)

Install Java 8

sudo apt install openjdk-8-jdk-headless

Android SDK

androiddevnotes

Building a react native app in WSL2

Install, build and debug a react native app in WSL2 (Windows Subsystem for Linux) and Ubuntu.

• Install tools in Windows
• Install tools in WSL2
• Create android virtual device in Windows
• Start android virtual device in Windows
• Start adb server in Windows
• Enable access to adb server from WSL2