Ordered Broadcast in Android

OrderedBroadcast.kt

// Send ordered broadcast

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

        // Create the intent for the ordered broadcast
        val orderedBroadcastIntent = Intent("com.example.ORDERED_BROADCAST")
        orderedBroadcastIntent.putExtra("message", "Hello from MainActivity!")

        // Send the ordered broadcast
        sendOrderedBroadcast(orderedBroadcastIntent, null)
    }
}

// abort broadcast
class MyOrderedBroadcastReceiver : BroadcastReceiver() {
    override fun onReceive(context: Context, intent: Intent) {
        // Receive the broadcast
        val action = intent.action
        if ("com.example.ORDERED_BROADCAST" == action) {
            // Log that the receiver has received the broadcast
            val message = intent.getStringExtra("message")
            println("Ordered Receiver Received: $message")

            // Do some processing or action here
            
            // Example of aborting the broadcast
            abortBroadcast() // This will prevent further receivers from receiving the broadcast
            // Log that the broadcast has been aborted
            println("Ordered Receiver Aborted Broadcast")
        }
    }
}


// Sending an Ordered Broadcast with initial data
val initialMessage = "Hello from the sender!"
val intent = Intent("com.example.ORDERED_BROADCAST").apply {
    putExtra("message", initialMessage)
}
sendOrderedBroadcast(intent, null)


// Manipulating data
class OrderedBroadcastReceiver : BroadcastReceiver() {
    override fun onReceive(context: Context, intent: Intent) {
        val action = intent.action
        if ("com.example.ORDERED_BROADCAST" == action) {
            // Retrieve the initial message from the broadcast
            val initialMessage = intent.getStringExtra("message")

            // Log.d initialMessage : Hello from the sender!
            println("initialMessage: $initialMessage")

            // Modify the message
            val modifiedMessage = initialMessage?.toUpperCase() + "-Modified" // Example modification

            // Pass the modified message to the next receiver
            setResultData(modifiedMessage)
        }
    }
}

// Getting updated data and aborting broadcast
class OrderedBroadcastReceiver : BroadcastReceiver() {
    override fun onReceive(context: Context, intent: Intent) {
        val action = intent.action
        if ("com.example.ORDERED_BROADCAST" == action) {
            // Retrieve the modified message from the broadcast
            val modifiedMessage = intent.getStringExtra("message")

            // Log.d modifiedMessage : HELLO FROM THE SENDER!-Modified
            println("modifiedMessage: $modifiedMessage")

            // This receiver can also abort further deliveries
            abortBroadcast()
        }
    }
}