Scanner now passes result correctly to MainActivity

app/src/main/java/me/impy/aegis/MainActivity.java

@@ -5,22 +5,48 @@ import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.io.Serializable;
+
+import me.impy.aegis.crypto.KeyInfo;
+import me.impy.aegis.crypto.TOTP;
 
 public class MainActivity extends AppCompatActivity {
 
+    static final int GET_KEYINFO = 1;
     Button btnScan;
+    TextView tvTotp;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
         btnScan = (Button) findViewById(R.id.button);
+        tvTotp = (TextView) findViewById(R.id.textView2);
         btnScan.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 Intent scannerActivity = new Intent(getApplicationContext(), ScannerActivity.class);
-                startActivity(scannerActivity);
+                startActivityForResult(scannerActivity, GET_KEYINFO);
             }
         });
     }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        // Check which request we're responding to
+        if (requestCode == GET_KEYINFO) {
+            // Make sure the request was successful
+            if (resultCode == RESULT_OK) {
+                KeyInfo info = (KeyInfo)data.getSerializableExtra("Keyinfo");
+
+                String nowTimeString = (Long.toHexString(System.currentTimeMillis() / 1000 / info.getPeriod()));
+                String totp = TOTP.generateTOTP(info.getSecret(), nowTimeString, info.getDigits(), info.getAlgo());
+
+                tvTotp.setText(totp);
+            }
+        }
+    }
 }

app/src/main/java/me/impy/aegis/ScannerActivity.java

@@ -2,6 +2,7 @@ package me.impy.aegis;
 
 import android.Manifest;
 import android.app.Activity;
+import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.util.TimeUtils;
@@ -13,6 +14,7 @@ import android.widget.Toast;
 import com.google.zxing.BarcodeFormat;
 import com.google.zxing.Result;
 
+import java.io.Serializable;
 import java.sql.Time;
 import java.util.ArrayList;
 import java.util.List;
@@ -53,14 +55,19 @@ public class ScannerActivity extends Activity implements ZXingScannerView.Result
         try {
             KeyInfo info = KeyInfo.FromURL(rawResult.getText());
 
-            String nowTimeString = (Long.toHexString(System.currentTimeMillis() / 1000 / info.getPeriod()));
-            Toast.makeText(this, TOTP.generateTOTP(info.getSecret(), nowTimeString, info.getDigits(), info.getAlgo()), Toast.LENGTH_LONG).show();
+            //String nowTimeString = (Long.toHexString(System.currentTimeMillis() / 1000 / info.getPeriod()));
+            //Toast.makeText(this, TOTP.generateTOTP(info.getSecret(), nowTimeString, info.getDigits(), info.getAlgo()), Toast.LENGTH_LONG).show();
+
+            Intent resultIntent = new Intent();
+            resultIntent.putExtra("Keyinfo", info);
+            setResult(Activity.RESULT_OK, resultIntent);
+            finish();
         } catch (Exception e) {
             e.printStackTrace();
         }
 
         // If you would like to resume scanning, call this method below:
-        mScannerView.resumeCameraPreview(this);
+        //mScannerView.resumeCameraPreview(this);
     }
 
     @Override

app/src/main/java/me/impy/aegis/crypto/KeyInfo.java

@@ -2,9 +2,11 @@ package me.impy.aegis.crypto;
 
 import android.net.Uri;
 
+import java.io.Serializable;
+
 import me.impy.aegis.encoding.Base32;
 
-public class KeyInfo {
+public class KeyInfo implements Serializable {
     private String type;
     private String label;
     private byte[] secret;

app/src/main/res/layout/activity_main.xml

@@ -17,4 +17,13 @@
         android:layout_alignParentTop="true"
         android:layout_alignParentLeft="true"
         android:layout_alignParentStart="true"/>
+
+    <TextView
+        android:text="TextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/textView2"
+        android:textSize="24sp"
+        android:layout_centerVertical="true"
+        android:layout_centerHorizontal="true"/>
 </RelativeLayout>