bugfix: fix DebugPanelBroadcastReceiver memory leak

Author: EmogurovAnton

panel-core/src/main/kotlin/com/redmadrobot/debug/core/DebugPanelInstance.kt

@@ -11,7 +11,7 @@ import kotlinx.coroutines.channels.BufferOverflow
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableSharedFlow
 
-internal class DebugPanelInstance constructor(
+internal class DebugPanelInstance(
     application: Application,
     plugins: List<Plugin> = emptyList()
 ) {

panel-core/src/main/kotlin/com/redmadrobot/debug/core/util/DebugPanelBroadcastReceiver.kt

@@ -5,18 +5,18 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import com.redmadrobot.debug.core.DebugPanel
+import java.lang.ref.WeakReference
 
-internal class DebugPanelBroadcastReceiver(
-    private val activity: Activity
-) : BroadcastReceiver() {
+internal class DebugPanelBroadcastReceiver(activity: Activity) : BroadcastReceiver() {
+    private val activityReference = WeakReference(activity)
 
     companion object {
         const val ACTION_OPEN_DEBUG_PANEL = "com.redmadrobot.debug.core.ACTION_OPEN_DEBUG_PANEL"
     }
 
     override fun onReceive(context: Context, intent: Intent) {
         if (intent.action == ACTION_OPEN_DEBUG_PANEL) {
-            DebugPanel.showPanel(activity)
+            activityReference.get()?.let { DebugPanel.showPanel(it) }
         }
     }
 }

sample/src/main/kotlin/com/redmadrobot/debug_sample/MainActivity.kt

@@ -14,9 +14,6 @@ import com.redmadrobot.debug_sample.network.ApiFactory
 import com.redmadrobot.debugpanel.databinding.ActivityMainBinding
 import com.redmadrobot.flipper.config.FlipperValue
 import kotlinx.coroutines.DelicateCoroutinesApi
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import okhttp3.ResponseBody
@@ -146,8 +143,7 @@ class MainActivity : AppCompatActivity() {
             .onEach { changedToggles ->
                 onFlipperTogglesChanged(changedToggles)
             }
-            .flowOn(Dispatchers.Main)
-            .launchIn(GlobalScope)
+            .launchIn(lifecycleScope)
     }
 
     private fun onFlipperTogglesChanged(changedToggles: Map<String, FlipperValue>) {