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ionic cordova run android fails at invalid adb location?

I'm trying to get a brand new set up in place to run the example Ionic 4 app on an android device. I'm running on a brand new iMac and have installed all the needed prerequisites (ionic cli, npm, JDK8, Gradle, Android SDK, set up environmental variables, etc.) All latest version, fresh install.
I'm able to create the example app, add android platform, and build fine. But when I try to run to a device I get this error:
cordova build android
native-run android --app platforms/android/app/build/outputs/apk/debug/app-debug.apk --forward 8100:8100
[native-run] Error: spawn /Users/mike/Library/Android/sdk/platform-tools/adb ENOENT
[native-run] at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
[native-run] at onErrorNT (internal/child_process.js:469:16)
[native-run] at processTicksAndRejections (internal/process/task_queues.js:84:21)
[ERROR] An error occurred while running subprocess native-run.
What concerns me is the file path shown (.../sdk/platform-tools/adb) is different from where I see the location when navigating there myself (i.e. the fresh install of Android Studio has this at the location .../sdk/platform-tools/platform-tools/adb .... (note the extra "platform-tools" folder.
When I run "adb devices" it works, but only when I have the environmental variable (PATH) set to .../platform-tools/platform-tools/adb but when I try the ionic run command its obviously trying the other location. How? Why? What did I install wrong???

After much toiling... final step was to completely uninstall and remove all components of Android Studio, then reinstall again. This solved it and removed the duplicate folders. No idea how it would have happened on a standard install but if anyone else experiences it, this would be my recommendation.

Cmd/React Native can't detect my JAVA_HOME environment variables

I'm trying to create a React Native app for Android. I use bash from the command line in Windows 10. I browse to the location of my React Native project and then run "react-native run-android". But then I get an error like this:
$ react-native run-android
info Running jetifier to migrate libraries to AndroidX. You can disable it using "--no-jetifier" flag.
Jetifier found 864 file(s) to forward-jetify. Using 4 workers...
info Starting JS server...
/bin/sh: 1: adb: not found
info Launching emulator...
error Failed to launch emulator. Reason: No emulators found as an output of `emulator -list-avds`.
warn Please launch an emulator manually or connect a device. Otherwise app may fail to launch.
info Installing the app...
ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.
error Failed to install the app. Make sure you have the Android development environment set up: https://facebook.github.io/react-native/docs/getting-started.html#android-development-environment. Run CLI with --verbose flag for more details.
Error: Command failed: ./gradlew app:installDebug -PreactNativeDevServerPort=8081
at checkExecSyncError (child_process.js:601:13)
at execFileSync (child_process.js:621:13)
at runOnAllDevices (/mnt/c/users/lenovo/documents/repositories/upself rn/upself/node_modules/#react-native-community/cli-platform-android/build/commands/runAndroid/runOnAllDevices.js:94:39)
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:188:7)
TL;DR it tells me to set the environment variable for JAVA_HOME. AFAIK.
The problem is I've already set the JAVA_HOME since I installed the Windows 10 in my laptop which was months ago. I use JDK 12 and have developed few native Android app using Android Studio using this same laptop and never have I encountered any missing JAVA_HOME issue.
This is what I've tried to try to solve this issue:
Run the cmd as administrator
Set the JAVA_HOME to c:\Program Files\Java\jdk-12.0.2\ and the one in Android Studio default SDK location C:\Users\lenovo\AppData\Local\Android\Sdk. Both dont work.
Restart my laptop and cmd (done it multiple times but it still doesnt work).
Put a quotation mark between the path (found this in a stack overflow question).
I've read many questions in stack overflow but none of those works.
So, could anyone help me to solve this problem? Why is it unable to detect the environment path?

According to react native document, you should install just JDK 8 for running react native app
https://facebook.github.io/react-native/docs/getting-started
after installing java and set the environment variable, you must reboot your system.
https://www.thewindowsclub.com/set-java_home-in-windows-10

React-native does not find Genymotion

I installed android studio, I configured the environment variables and everything, I installed genymotion and created a device, but running the react-native run-android in the project folder occurs the following error:
error Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/getting-started.html
error Command failed: gradlew.bat app:installDebug. Run CLI with --verbose flag for more details.
please help me in this problem. React-native does not find Genymotion disositivo, in this link has more details: https://pt.stackoverflow.com/questions/382115/react-native-n%C3%A3o-reconhece-genymotion

It tries to connect the emulator to the ADB, by the IP of the device. To check the IP of the device, simply click on an emulator window, the IP address is in the title of the window.
No terminal will run the command:
$ adb connect ip_of_your_emulator:5555
Soon after, run:
$ adb devices
If the name of your file appears in the list, your emulator has been connected successfully!
With the emulator open, simply run the native run-android in the folder of your project.

I've had the same problem earlier this month. As far as I can tell the newer versions of Genymotion don't register on adb devices, a user in the Expo forums speculates it's because they have a paywall now.
I recommend switching to Android Studio, that's what I did to solve my problem.

I ran react-native with the --verbose flag, and got the following error:
...
error Failed to install the app. Make sure you have the Android development
environment set up: https://reactnative.dev/docs/environment-setup.
Error: spawn ./gradlew EACCES
...
So, I gave permissions to the android/gradlew folder as follows:
chmod 755 android/gradlew
But then, I got an error regarding Google Play Licenses:
error Failed to install the app. Please accept all necessary Android SDK
licenses using Android SDK Manager: "$ANDROID_HOME/tools/bin/sdkmanager --licenses".
Error: Command failed: ./gradlew app:installDebug -PreactNativeDevServerPort=8081
So yeah, pretty the solution was:
Downloading Android Studio with its own SDK
Change the env variabe ANDROID_HOME to the one installed with Android Studio
Installing Google Play Licensing Library (In Android Studio, go to Settings>SDK Manager>SDK Tools, select Google Play License Library and then install)

Android SDK installed but not found

I'm installing an environment for an Ionic project on Windows 10. I downloaded Android studio and installed SDK in
C:\Users\user\AppData\Local\Android\sdk
My system variable ANDROID_HOME=C:\Users\user\AppData\Local\Android\sdk
Executed OK:
ionic platform add android
But :
$ ionic run android
Running command: "C:\Program Files\nodejs\node.exe" C:\Users\KGE\SVN\trunk\sagaMobile\hooks\after_prepare\010_add_platform_class.js C:/Users/KGE/SVN/trunk/sagaMobile
add to body class: platform-android
Error: Android SDK not found. Make sure that it is installed. If it is not at the default location, set the ANDROID_HOME environment variable.
I tried to find a solution for 2 days but nothing works. If you have any ideas ...
EDIT:
I use Git bash for input. I have the same with CMD, even as admin.
EDIT 2:
Solved by removing and reinstall of the whole project

Command failed with exit code ENOENT

I am new to Ionic and created a simple application. I have installed Android Sdk. And added these Environment Variable
I am trying to build my app using cordova build commandcommand but getting this error :-
Error: cmd: Command failed with exit code ENOENT
I am been searching whole day for the solution and finally ended up here.

For linux, you'll also need to add these lines in ~/.bashrc file
export ANDROID_HOME='/home/your_username/Android/Sdk'
export ANDROID_SDK_ROOT='/home/your_username/Android/Sdk'
export PATH=$PATH:$ANDROID_SDK_ROOT/platform-tools:$ANDROID_SDK_ROOT/cmdline-tools/latest/bin
Then check if android target is read with cordova requirements first.
Reference for Mac OS:
https://gist.github.com/kristopherjohnson/7568583

Command should be ionic platform add android and not cordova platform add android

I was getting the same error ...
In my case, it was occurring because of the changes in ionic CLI...
Now you need to run 'ionic cordova platform add android' (or ios) but the extension dont run this command yet...
I just insert 'cordova' in the source code of plugin (try to search the funcions that run the commands that start with 'ionic' and have to run 'cordova' together'
In the macOS, you find the source code at:
~/.vscode/extensions/vsmobile.cordova-tools-1.2.7/out/src/debugger/cordovaDebugAdapter.js
In the Windows, the path is:
C:\Users\yourusername\.vscode\extensions\vsmobile.cordova-tools-1.2.7\out\src\debugger\cordovaDebugAdapter.js
It worked for me...