stop amplitude updates when app is in background

app/src/main/AndroidManifest.xml

@@ -69,6 +69,7 @@
             android:exported="false">
             <intent-filter>
                 <action android:name="com.simplemobiletools.voicerecorder.action.GET_RECORDER_INFO" />
+                <action android:name="com.simplemobiletools.voicerecorder.action.STOP_AMPLITUDE_UPDATE" />
             </intent-filter>
         </service>
 

app/src/main/kotlin/com/simplemobiletools/voicerecorder/activities/MainActivity.kt

@@ -13,6 +13,7 @@ import com.simplemobiletools.commons.models.FAQItem
 import com.simplemobiletools.voicerecorder.BuildConfig
 import com.simplemobiletools.voicerecorder.R
 import com.simplemobiletools.voicerecorder.helpers.GET_RECORDER_INFO
+import com.simplemobiletools.voicerecorder.helpers.STOP_AMPLITUDE_UPDATE
 import com.simplemobiletools.voicerecorder.models.Events
 import com.simplemobiletools.voicerecorder.services.RecorderService
 import kotlinx.android.synthetic.main.activity_main.*
@@ -56,6 +57,11 @@ class MainActivity : SimpleActivity() {
     override fun onDestroy() {
         super.onDestroy()
         bus?.unregister(this)
+
+        Intent(this@MainActivity, RecorderService::class.java).apply {
+            action = STOP_AMPLITUDE_UPDATE
+            startService(this)
+        }
     }
 
     override fun onCreateOptionsMenu(menu: Menu): Boolean {

app/src/main/kotlin/com/simplemobiletools/voicerecorder/helpers/Constants.kt

@@ -4,3 +4,4 @@ const val RECORDER_RUNNING_NOTIF_ID = 10000
 
 private const val PATH = "com.simplemobiletools.voicerecorder.action."
 const val GET_RECORDER_INFO = PATH + "GET_RECORDER_INFO"
+const val STOP_AMPLITUDE_UPDATE = PATH + "STOP_AMPLITUDE_UPDATE"

app/src/main/kotlin/com/simplemobiletools/voicerecorder/services/RecorderService.kt

@@ -21,6 +21,7 @@ import com.simplemobiletools.voicerecorder.R
 import com.simplemobiletools.voicerecorder.activities.SplashActivity
 import com.simplemobiletools.voicerecorder.helpers.GET_RECORDER_INFO
 import com.simplemobiletools.voicerecorder.helpers.RECORDER_RUNNING_NOTIF_ID
+import com.simplemobiletools.voicerecorder.helpers.STOP_AMPLITUDE_UPDATE
 import com.simplemobiletools.voicerecorder.models.Events
 import org.greenrobot.eventbus.EventBus
 import java.io.File
@@ -44,6 +45,7 @@ class RecorderService : Service() {
 
         when (intent.action) {
             GET_RECORDER_INFO -> broadcastRecorderInfo()
+            STOP_AMPLITUDE_UPDATE -> amplitudeTimer.cancel()
             else -> startRecording()
         }
 
@@ -85,8 +87,7 @@ class RecorderService : Service() {
                 durationTimer = Timer()
                 durationTimer.scheduleAtFixedRate(getDurationUpdateTask(), 1000, 1000)
 
-                amplitudeTimer = Timer()
+                startAmplitudeUpdates()
-                amplitudeTimer.scheduleAtFixedRate(getAmplitudeUpdateTask(), 0, AMPLITUDE_UPDATE_MS)
             } catch (e: IOException) {
                 showErrorToast(e)
                 stopRecording()
@@ -117,6 +118,16 @@ class RecorderService : Service() {
     private fun broadcastRecorderInfo() {
         broadcastDuration()
         broadcastStatus()
+
+        if (isRecording) {
+            startAmplitudeUpdates()
+        }
+    }
+
+    private fun startAmplitudeUpdates() {
+        amplitudeTimer.cancel()
+        amplitudeTimer = Timer()
+        amplitudeTimer.scheduleAtFixedRate(getAmplitudeUpdateTask(), 0, AMPLITUDE_UPDATE_MS)
     }
 
     @SuppressLint("InlinedApi")