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kotlinlang

Hi :wave: I was trying to run a new coroutine on a new thread context on Android by calling:
```newSingleThreadContext("MyName").use {
  runBlocking(it) {
    // some suspend calls, including `delay`
  }
}```
but it always ended up with the ANR error. Is that expected? I thought that `runBlocking` blocked the current thread, which in this case should be a new background thread, not the main thread. If that’s the case, then why this code would result in ANR?
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`runBlocking` always blocks the _current_ thread, while it waits for its child coroutines to complete. The context you pass in can change which thread the coroutines are running on, but it doesn't change which thread is waiting for them. If you don't want the current thread to wait for the coroutines to complete, maybe you want to make a coroutine scope with your new context and use `launch` instead of `runBlocking`.

Ah, I see! For some reason I was fixed on the idea that `runBlocking` also runs on the new thread, but now it all makes sense :sweat_smile: thanks!