add toast to usb listener

app/src/main/java/com/example/hpostesting/domain/di/AppModule.kt

@@ -22,6 +22,8 @@ import com.example.hpostesting.domain.LogFileManager
 import com.example.hpostesting.domain.LogFileManagerImpl
 import com.example.hpostesting.domain.SaveRawData
 import com.example.hpostesting.domain.SaveRawDataTest
+import com.example.hpostesting.presentation.UsbServiceListener
+import com.example.hpostesting.presentation.UsbServiceListenerImpl
 import com.example.hpostesting.util.PropertyProviderImpl
 import dagger.Module
 import dagger.Provides
@@ -179,4 +181,10 @@ object AppModule {
     fun provideLocalFileDataSource(): LocalFileDataSource {
         return LocalFileDataSourceImpl()
     }
+
+    @Provides
+    @Singleton
+    fun provideUsbServiceListener(): UsbServiceListener {
+        return UsbServiceListenerImpl()
+    }
 }

app/src/main/java/com/example/hpostesting/presentation/UsbServiceListenerImpl.kt

@@ -0,0 +1,26 @@
+package com.example.hpostesting.presentation
+
+import android.content.Context
+import android.util.Log
+import android.widget.Toast
+
+class UsbServiceListenerImpl(private val context: Context): UsbServiceListener {
+    override fun onUsbRead(data: ByteArray?) {
+        if (data != null) {
+            val receivedData = String(data)
+            logData(receivedData)
+        }
+    }
+
+    override fun onUsbError(e: Exception?) {
+        showToast("USB Error: ${e?.message}")
+    }
+
+    private fun showToast(message: String) {
+        Toast.makeText(context, message, Toast.LENGTH_SHORT).show()
+    }
+
+    private fun logData(data: String) {
+        Log.d("UsbServiceListener", "Received data from USB: $data")
+    }
+}