Coroutine

   GlobalScope
   coroutineScope
   runBlocking
   runBlocking 2
   Job
   Récupérer la valeur d'un Job 
   Exception
===============================
 GlobalScope
===============================
 Toast.makeText(this," before coroutine", Toast.LENGTH_LONG).show()

        GlobalScope.launch {

                delay(2000)
                runOnUiThread {
                    Toast.makeText(this@MainActivity," inside coroutine", Toast.LENGTH_LONG).show()

                }

        }
        Toast.makeText(this," after coroutine", Toast.LENGTH_LONG).show()
        
===============================
   coroutineScope
===============================
Toast.makeText(this," before coroutine", Toast.LENGTH_LONG).show()

        GlobalScope.launch {
            coroutineScope { launch {
                delay(2000)
                runOnUiThread {
                    Toast.makeText(this@MainActivity," inside coroutine", Toast.LENGTH_LONG).show()

                }
            }
        }

        }

        Toast.makeText(this," after coroutine", Toast.LENGTH_LONG).show()
  

===============================
   runBlocking
===============================

 Toast.makeText(this," before coroutine", Toast.LENGTH_LONG).show()

        runBlocking (Dispatchers.Default){

                delay(2000)
                runOnUiThread {
                    Toast.makeText(this@MainActivity," inside coroutine", Toast.LENGTH_LONG).show()

                }

        }

        Toast.makeText(this," after coroutine", Toast.LENGTH_LONG).show()
   

===============================
   runBlocking 2
===============================
 Toast.makeText(this," before coroutine", Toast.LENGTH_LONG).show()

        runBlocking {

            CoroutineScope(Dispatchers.Default).launch {
                delay(2000)
                runOnUiThread {
                    Toast.makeText(this@MainActivity," inside coroutine", Toast.LENGTH_LONG).show()

                }
            }


        }

        Toast.makeText(this," after coroutine", Toast.LENGTH_LONG).show()
  ===============================
  Job
  ===============================
  
   Toast.makeText(this," before coroutine", Toast.LENGTH_LONG).show()

        runBlocking(Dispatchers.Default) {
        val job = launch {

            delay(2000)
            runOnUiThread {
                Toast.makeText(this@MainActivity," inside coroutine", Toast.LENGTH_LONG).show()

            }

            }
            job.invokeOnCompletion {
                runOnUiThread {
                Toast.makeText(this@MainActivity," job completed", Toast.LENGTH_LONG).show()
                }
            }
            delay(1000)
            runOnUiThread {
                Toast.makeText(this@MainActivity," job will be canceled", Toast.LENGTH_LONG).show()
            }
            job.cancel()

        }

        Toast.makeText(this," after coroutine", Toast.LENGTH_LONG).show()
   
   ==================================
   Récupérer la valeur d'un Job 
   ==================================
   class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        Toast.makeText(this," before coroutine", Toast.LENGTH_LONG).show()

        runBlocking(Dispatchers.Default) {
       launch {

                val value1 = async { getFirstValue() }
                val value2 = async { getSecondeValue() }

           val firstValue = value1.await()
           val secondeValue = value2.await()

           runOnUiThread()
           {
               Toast.makeText(this@MainActivity," first value  " +firstValue +" seconde value "+secondeValue, Toast.LENGTH_LONG).show()

           }

         }
        }

        Toast.makeText(this," after coroutine", Toast.LENGTH_LONG).show()
    }

    suspend fun getFirstValue() : Int
    {
        return 2*3
    }
    suspend fun getSecondeValue() : Int
    {
        return 2*5
    }
}
===============================
 Exception
===============================
 runBlocking {

            try {

                delay(2000)

            } catch (e : Exception)
            {
                Toast.makeText(this@MainActivity,"test",Toast.LENGTH_LONG).show()
            }

        }
=============================
SupervisorJob
=============================
  runBlocking { 
            launch(SupervisorJob()) { 
                delay(1000)
            }
        }

        GlobalScope.launch() {

           CoroutineScope(SupervisorJob()).launch {
                 delay(1000)
              }
            
            }

        }
=============================
Flow
=============================       

class MainActivity : AppCompatActivity() {


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        runBlocking {
            sendPrimes().collect{
                Toast.makeText(this@MainActivity, " number $it", Toast.LENGTH_LONG).show()
            }
        }
    }

    fun sendPrimes(): Flow<Int> = flow {
        val primeList = listOf(2,7,8,9,1)

        primeList.forEach{
            delay(1000)
            emit(it)
        }
    }



}