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Ionic getting to know what was the recently run apps on android

I'm writing a simple android app detection using Ionic (fairly new too as well with mobile apps dev using Ionic). Using this plugin App Availaibility I was able to get a list of installed apps, however is there a way or plugin or is it possible to know what was the recent app that was used in the foreground? Like if a com.android.appname was run, it may be able to detect it? Thanks.

No there is not, I'd assume that there won't be a plugin for this either. In order for the device to know what app has ran in the past, it must hold this data somewhere. I doubt google or apple does anything like this.
or
you can always try and build a plugin yourself and see if its possible.

Communicate between two apps

I am developing a unity android app and an android studio app to work. I want to open and close them using each other and to pass messages between them. How can I achieve this? Both apps are in one phone.
How to create a intent of the unity app in android studio?
How to invoke a method of unity app inside android studio app?
How to invoke a method of android studio app inside unity app?
I am completely new to android development. Even though there are similar questions, couldn't find a solution that worked for me. Thank you.

If both apps are installed on one phone and should interact you can use Broadcasts

Android Wear project - with an existing Android project

I have an existing Android app (for 4.2) written using Eclipse.
I'm exploring the possibility of adding an Android Wear component - there's part of the app which I think could work on a watch.
Reading through the docs at https://developer.android.com/training/building-wearables.html I'm unsure of what I'd need to do in order to integrate Wear into my existing project.
For example, under prerequisites it says Android Studio. Does that mean I'd need to migrate my Eclipse solution into Android Studio? Or can I build the Wear component independently?
Essentially, I'm just hoping to hear from someone who has added a Wear component to their existing Android solution so I can understand the basics of what's involved.

Android Wear is essentially very light application. The basic processing happens on the handheld device. Only user interaction functionalities such as accept, reject etc. is deplyed to the wear. Here also the processing is carried on by the handheld device.
So yes, you can include Wear to your project if it adds any value.

How to develop watch face with wearable app in android?

I am new in Android wearable app development and recently I came to know that Watch Face API is also now available for Android. So I want to develop wearable app of my mobile app and also I want to develop watch face of that same app.
Can anyone suggest me is this possible or not? As I know that the layout file of wearable app and watch face are same (activity_main.xml). So how can I develop design of watch and wearable app?
I am stuck with this confusion. Please let me know the feasibility.
Thanks in advance.

For creating a watchface you need to create a service using CanvasWatchFaceService class
Watch faces in Android Wear are implemented as services. When a watch
face is active, the system invokes the methods in its service when the
time changes or when an important event occurs (like switching to
ambient mode or receiving a new notification). The service
implementation then draws the watch face on the screen using the
updated time and any other relevant data.
You may follow this https://developer.android.com/training/wearables/watch-faces/designing.html step by step to create your watchface

For wear development, refer to the following:
Creating and running a wearable app
You can run a debug wearable app over bluetooth by following this reference:
Debugging over bluetooth
If you want to test your app on the android wear handheld application, you will need to build a signed release apk and upload it to your mobile device.
For this procedure, read the following:
Assuming you use android studio:
Your mobile build.gradle file should have the following dependency:
dependencies {
...
wearApp project(':wear')
}
Go to Build > Generate signed apk. In the first window, select mobile as your module.
Now when the build is complete, the wear module will automatically be embedded into the mobile module. The mobile apk is the one you distribute. Wear can be used for testing.

How do you run an Android Wearable app?

This may be a silly question.
I've followed the instructions to create and Android Wearable app. I can compile and run it in a Wearable emulator. Everything is great.
What I can't figure out is: how do I run my app? I can run it fine from Android Studio, but there doesn't seem to be any sort of interface on the Wearable emulator to find and launch apps.
Is there an equivalent to the Android phone Launcher but for Wearables? And if not, how do I run a wearable app from the wearable emulator?

Hopefully I don't get your question wrong, but here's how you can start any app installed on the wearable:
1 - Click anywhere on your WatchFace screen
2 - Scroll all the way down and tap on "Start..."
3 - There you see all of the apps
Note: You have to consider that Google "hid" this, let's call it, "Launcher-Menu" for good reasons. (At least Google thinks so). That's because you can start nearly any app via a Voice-Command like "Ok Google, Start XYZ". (Which won't work on an emulator of course)
And for everyone who's not cool with that there're also Third-Party apps which let you start an "App Drawer" right from the WatchFace (click).

Below is a link with instructions on how to get an emulator up and running for testing purposes. I'm pretty sure this answers your question.
https://developer.android.com/training/wearables/apps/creating.html
Let me know if this helps you or not