Android Application
Kotlin 브로드캐스트 리시버 : BroadCast 이벤트 송신, 수신하기
작성자 임베디드코리아
작성일 23-10-23 23:07
조회1,350회
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Kotlin 브로드캐스트 리시버(Broadcast Receiver,BR) : BroadCast 이벤트 송신, 수신하기
발신자와 동일한 앱에 있는 수신자에 브로드캐스트를 전송한다.
동일한 앱에서 BroadCast를 송신하고 수신을 하고 싶다면 LocalBroadcastManager를 사용한다.
앱 간에 브로드캐스트를 전송할 필요가 없을 때 LocalBroadcastManager 를 사용한다.
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activity_main.xml
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<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/send_broadcast"
android:layout_width="200dp"
android:layout_height="70dp"
android:background="@drawable/confirm_button"
android:text="BROADCAST 전송"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
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botton_true.xml
-- res/drawable
-- New --> Drawable Resource File
-- File Name : button_true , Root Element : shape
------------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:padding="10dp"
android:shape="rectangle" >
<solid android:color="#8EC7F4" />
<stroke android:color="#ff0000ff" android:width="4dp" />
<padding android:left="7dp" android:top="7dp"
android:right="7dp" android:bottom="7dp" />
<corners
android:radius="30dp"
android:bottomLeftRadius="30dp"
android:bottomRightRadius="30dp"
android:topLeftRadius="30dp"
android:topRightRadius="30dp" />
</shape>
------------------------------------------------------------------------------------
botton_false.xml
-- res/drawable
-- New --> Drawable Resource File
-- File Name : button_farse , Root Element : shape
------------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:padding="10dp"
android:shape="rectangle" >
<solid android:color="#FFC107" />
<stroke android:color="#ff0000ff" android:width="4dp" />
<padding android:left="7dp" android:top="7dp"
android:right="7dp" android:bottom="7dp" />
<corners
android:radius="30dp"
android:bottomLeftRadius="30dp"
android:bottomRightRadius="30dp"
android:topLeftRadius="30dp"
android:topRightRadius="30dp" />
</shape>
------------------------------------------------------------------------------------
confirm_botton.xml
-- res/drawable
-- New --> Drawable Resource File
-- File Name : confirm_botton , Root Element : selector
------------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@drawable/button_false"></item>
<item android:state_pressed="false" android:drawable="@drawable/button_true"></item>
</selector>
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MainActivity.kt
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class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val broadcaster = LocalBroadcastManager.getInstance(this)
val send = findViewById<View>(R.id.send_broadcast) as Button
send.setOnClickListener {
Log.d("Tag", "클릭 실행 브로드캐스트 실행")
val intent = Intent("MyData")
intent.putExtra("phone", "010-1234-1111")
broadcaster.sendBroadcast(intent)
}
}
var br: BroadcastReceiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
if (intent.action == Intent.ACTION_BATTERY_CHANGED) {
val toast = Toast.makeText(context, "Battery status is changed.", Toast.LENGTH_LONG)
toast.show()
} else if (intent.action == Intent.ACTION_SCREEN_ON) {
val toast = Toast.makeText(context, "Screen on.", Toast.LENGTH_LONG)
toast.show()
} else if (intent.action == "example.test.broadcast") {
val toast = Toast.makeText(context, "Customize broadcast!", Toast.LENGTH_LONG)
toast.show()
}
}
}
private val mMessageReceiver: BroadcastReceiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
Log.d("Tag", "커스텀 브로드캐스트 실행 받음")
Toast.makeText(context, intent.getStringExtra("phone"), Toast.LENGTH_LONG).show()
}
}
override fun onStart() {
super.onStart()
LocalBroadcastManager.getInstance(this).registerReceiver((mMessageReceiver),IntentFilter("MyData"))
}
override fun onStop() {
super.onStop()
LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver)
}
override fun onPause() {
super.onPause()
unregisterReceiver(br)
}
override fun onResume() {
super.onResume()
var iFilter = IntentFilter()
iFilter.addAction(Intent.ACTION_BATTERY_CHANGED)
iFilter.addAction(Intent.ACTION_SCREEN_ON)
registerReceiver(br, iFilter)
}
}
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themes.xml
------------------------------------------------------------------------------------
<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Base.Theme.BroadcastSendReceive" parent="Theme.AppCompat.Light">
<item name="colorPrimary">#8BC34A</item>
<item name="colorPrimaryDark">#4B5481</item>
</style>
<style name="Theme.BroadcastSendReceive" parent="Base.Theme.BroadcastSendReceive" />
</resources>
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