How to check if current thread is not main thread

Looper.myLooper() == Looper.getMainLooper()

if this returns true, then you're on the UI thread!

you can use below code to know if current thread is UI/Main thread or not

if(Looper.myLooper() == Looper.getMainLooper()) {
   // Current Thread is Main Thread.
}

or you can also use this

if(Looper.getMainLooper().getThread() == Thread.currentThread()) {
   // Current Thread is Main Thread.
}

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