Feat : added flash light while scanning QRcode

gradle.properties

@@ -10,4 +10,5 @@
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 android.useAndroidX=true
-android.enableJetifier=true
+android.enableJetifier=true
+android.enableUnitTestBinaryResources=true

skunkworks_crow/src/main/AndroidManifest.xml

@@ -61,7 +61,7 @@
         <service android:name=".services.HotspotService" />
 
         <activity
-            android:name="com.journeyapps.barcodescanner.CaptureActivity"
+            android:name=".views.ui.receive.ScannerActivity"
             android:screenOrientation="portrait"
             android:stateNotNeeded="true"
             tools:replace="android:screenOrientation" />

skunkworks_crow/src/main/java/org/odk/share/views/ui/hotspot/HpReceiverActivity.java

@@ -31,7 +31,6 @@
 
 import com.google.zxing.integration.android.IntentIntegrator;
 import com.google.zxing.integration.android.IntentResult;
-import com.journeyapps.barcodescanner.CaptureActivity;
 
 import org.json.JSONException;
 import org.json.JSONObject;
@@ -49,6 +48,7 @@
 import org.odk.share.views.listeners.OnItemClickListener;
 import org.odk.share.views.ui.bluetooth.BtReceiverActivity;
 import org.odk.share.views.ui.common.injectable.InjectableActivity;
+import org.odk.share.views.ui.receive.ScannerActivity;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -356,7 +356,7 @@ public void scanQRCode() {
                 .setDesiredBarcodeFormats(QR_CODE_TYPES)
                 .setCameraId(0)
                 .setOrientationLocked(false)
-                .setCaptureActivity(CaptureActivity.class)
+                .setCaptureActivity(ScannerActivity.class)
                 .setBeepEnabled(true)
                 .initiateScan();
     }

skunkworks_crow/src/main/java/org/odk/share/views/ui/receive/ScannerActivity.java

@@ -0,0 +1,116 @@
+package org.odk.share.views.ui.receive;
+
+/*
+ * created by Chromicle
+ */
+
+// I got resource from one of stackoverflow project https://stackoverflow.com/questions/32731869/turn-on-off-flashlight-in-zxing-fragment-lib/43886809l
+
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.view.KeyEvent;
+import android.view.View;
+import android.view.WindowManager;
+import android.widget.Button;
+
+import com.journeyapps.barcodescanner.CaptureManager;
+import com.journeyapps.barcodescanner.DecoratedBarcodeView;
+
+import org.odk.share.R;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import butterknife.OnClick;
+
+
+public class ScannerActivity extends AppCompatActivity implements
+        DecoratedBarcodeView.TorchListener {
+
+    @BindView(R.id.switch_flashlight)
+    Button toggleFlashlightButton;
+    @BindView(R.id.zxing_barcode_scanner)
+    DecoratedBarcodeView decoratedScannerView;
+    private CaptureManager capture;
+    private boolean isFlashLightOn;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_scanner);
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+
+        ButterKnife.bind(this);
+        decoratedScannerView.setTorchListener(this);
+
+
+        if (!isFlashlightSupported()) {
+            toggleFlashlightButton.setVisibility(View.GONE);
+        }
+
+        capture = new CaptureManager(this, decoratedScannerView);
+        capture.initializeFromIntent(getIntent(), savedInstanceState);
+        capture.decode();
+    }
+
+    private boolean isFlashlightSupported() {
+        return getApplicationContext().getPackageManager()
+                .hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
+    }
+
+    public void toggleFlashlight() {
+        if (isFlashLightOn) {
+            decoratedScannerView.setTorchOff();
+            isFlashLightOn = false;
+        } else {
+            decoratedScannerView.setTorchOn();
+            isFlashLightOn = true;
+        }
+    }
+
+    @Override
+    public void onTorchOn() {
+        toggleFlashlightButton.setBackgroundResource(R.drawable.ic_flash_white_on);
+    }
+
+    @Override
+    public void onTorchOff() {
+        toggleFlashlightButton.setBackgroundResource(R.drawable.ic_flash_white_off);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        capture.onResume();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        capture.onPause();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        capture.onDestroy();
+    }
+
+    @Override
+    protected void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        capture.onSaveInstanceState(outState);
+    }
+
+    @OnClick(R.id.switch_flashlight)
+    public void toggleButton() {
+        toggleFlashlight();
+    }
+
+    @Override
+    public boolean onKeyDown(int keyCode, KeyEvent event) {
+        return decoratedScannerView.onKeyDown(keyCode, event) || super.onKeyDown(keyCode, event);
+    }
+
+}

skunkworks_crow/src/main/res/drawable/ic_flash_white_off.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="18dp"
+    android:height="24dp"
+    android:viewportWidth="45.0"
+    android:viewportHeight="20.0">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M3.27,3L2,4.27l5,5V13h3v9l3.58,-6.14L17.73,20 19,18.73 3.27,3zM17,10h-4l4,-8H7v2.18l8.46,8.46L17,10z" />
+</vector>

skunkworks_crow/src/main/res/drawable/ic_flash_white_on.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="18dp"
+    android:height="24dp"
+    android:viewportWidth="45.0"
+    android:viewportHeight="20.0">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M7,2v11h3v9l7,-12h-4l4,-8z" />
+</vector>

skunkworks_crow/src/main/res/layout/activity_scanner.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:showIn="@layout/activity_scanner">
+
+    <!--  set custom layout for scanner-->
+    <com.journeyapps.barcodescanner.DecoratedBarcodeView
+        android:id="@+id/zxing_barcode_scanner"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+    <!--  FlashLight Button-->
+    <Button
+        android:id="@+id/switch_flashlight"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentTop="true"
+        android:layout_margin="20dp"
+        android:background="@drawable/ic_flash_white_off" />
+
+
+</RelativeLayout>

skunkworks_crow/src/test/java/org/odk/share/activities/ScannerActivtyTest.java

@@ -0,0 +1,63 @@
+package org.odk.share.activities;
+
+import android.widget.Button;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.odk.share.R;
+import org.odk.share.views.ui.receive.ScannerActivity;
+import org.robolectric.Robolectric;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.Shadows;
+import org.robolectric.shadows.ShadowLog;
+
+import static junit.framework.TestCase.assertTrue;
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertNotNull;
+
+/**
+ * Created by Chromicle on 21/8/19.
+ */
+@RunWith(RobolectricTestRunner.class)
+public class ScannerActivtyTest {
+
+    // for debugging unit tests.
+    static {
+        ShadowLog.stream = System.out;
+    }
+
+    private ScannerActivity scannerActivity;
+
+    @Before
+    public void setUp() throws Exception {
+        scannerActivity = Robolectric.setupActivity(ScannerActivity.class);
+    }
+
+
+    /**
+     * {@link Test} to assert {@link ScannerActivity} for not null.
+     */
+    @Test
+    public void shouldNotBeNull() {
+        assertNotNull(scannerActivity);
+    }
+
+
+    /**
+     * {@link Test} to assert flashButton's functioning.
+     */
+    @Test
+    public void flashLightButtonTest() throws Exception {
+        Button flashButton = scannerActivity.findViewById(R.id.switch_flashlight);
+        int flashOff = Shadows.shadowOf(flashButton.getBackground()).getCreatedFromResId();
+        assertThat("flash light button", R.drawable.ic_flash_white_off, is(equalTo(flashOff)));
+        assertTrue(flashButton.performClick());
+        int flashOn = Shadows.shadowOf(flashButton.getBackground()).getCreatedFromResId();
+        assertThat("flash button on", R.drawable.ic_flash_white_on, is(equalTo(flashOn)));
+    }
+
+
+}