Initial project with basic activity.

app/src/main/java/com/github/mondei1/offpass/MainActivity.kt

@@ -0,0 +1,46 @@
+package com.github.mondei1.offpass
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.google.zxing.integration.android.IntentIntegrator
+import com.google.zxing.integration.android.IntentResult
+import kotlinx.android.synthetic.main.activity_main.*
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        this.supportActionBar?.hide()
+
+        setContentView(R.layout.activity_main)
+
+        main_screen.setOnClickListener {
+            IntentIntegrator(this)
+                .setPrompt("Scan OffPass created QR-Code")
+                .setBeepEnabled(false)
+                .setBarcodeImageEnabled(false)
+                .initiateScan()
+            Log.i("Main", "Clicked on text")
+        }
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        var result: IntentResult =
+            IntentIntegrator.parseActivityResult(requestCode, resultCode, data)
+        if (result != null) {
+            if (result.contents == null) {
+                Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show()
+            } else {
+                Log.i("SCANNER", "Scanned: " + result.contents)
+                Toast.makeText(this, "Scanned: " + result.contents, Toast.LENGTH_LONG).show()
+            }
+        } else {
+            super.onActivityResult(requestCode, resultCode, data)
+        }
+    }
+
+}