Merge pull request #15 from jogrimst/master

Screen capturing

Author: literacyapp

app/build.gradle

@@ -14,8 +14,8 @@ android {
         applicationId "org.literacyapp.analytics"
         minSdkVersion 21
         targetSdkVersion 23
-        versionCode 1000000
-        versionName "1.0.0"
+        versionCode 1000001
+        versionName "1.0.1-SNAPSHOT"
     }
 
     buildTypes {

app/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.literacyapp.analytics">
 
+    <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 

app/src/main/java/org/literacyapp/analytics/service/ScreenshotJobService.java

@@ -7,6 +7,7 @@
 import android.util.Log;
 import android.view.Display;
 
+import org.literacyapp.analytics.util.CameraHelper;
 import org.literacyapp.analytics.util.DisplayHelper;
 
 import java.io.File;
@@ -25,13 +26,21 @@ public boolean onStartJob(JobParameters jobParameters) {
         for (Display display : displayManager.getDisplays()) {
             if (display.getState() != Display.STATE_OFF) {
                 Log.i(getClass().getName(), "display.getState(): " + display.getState());
+
+                // Capture screenshot
                 File screenshotFile = DisplayHelper.captureScreenshot();
                 Log.i(getClass().getName(), "screenshotFile.exists(): " + screenshotFile.exists());
                 if (screenshotFile.exists()) {
                     // Reduce image size
-                    File resizedScreenshotFile = DisplayHelper.resizeBitmap(screenshotFile, 320, false);
+                    File resizedScreenshotFile = DisplayHelper.resizeBitmap(screenshotFile, 640, false);
                     Log.i(getClass().getName(), "resizedScreenshotFile.exists(): " + resizedScreenshotFile.exists());
                 }
+
+                // Take picture with front camera
+                String picturePath = screenshotFile.getAbsolutePath().replace("_screenshot", "_picture");
+                Log.i(getClass().getName(), "picturePath: " + picturePath);
+                File pictureFile = new CameraHelper().takePicture(getApplicationContext(), picturePath);
+                Log.i(getClass().getName(), "pictureFile.exists(): " + pictureFile.exists());
             }
         }
 

app/src/main/java/org/literacyapp/analytics/util/CameraHelper.java

@@ -0,0 +1,72 @@
+package org.literacyapp.analytics.util;
+
+import android.content.Context;
+import android.hardware.Camera;
+import android.util.Log;
+import android.view.SurfaceView;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+/**
+ * See https://developer.android.com/training/camera/cameradirect.html
+ */
+public class CameraHelper {
+
+    private File pictureFile;
+
+    public File takePicture(Context context, String picturePath) {
+        Log.i(getClass().getName(), "takePicture");
+
+        pictureFile = new File(picturePath);
+        Log.i(DisplayHelper.class.getName(), "pictureFile: " + pictureFile);
+
+//        String deviceModel = DeviceInfoHelper.getDeviceModel(context);
+//        Log.i(getClass().getName(), "deviceModel: " + deviceModel);
+
+        try {
+            // http://stackoverflow.com/questions/32770723/capturing-image-from-camera-in-a-background-service
+            int cameraId = 1; // Front camera
+            Camera mCamera = Camera.open(cameraId); // Throws Exception if the camera is already in use by another application
+            Log.i(getClass().getName(), "mCamera: " + mCamera);
+            SurfaceView surfaceView = new SurfaceView(context);
+            Log.i(getClass().getName(), "surfaceView: " + surfaceView);
+            Camera.Parameters parameters = mCamera.getParameters();
+            Log.i(getClass().getName(), "parameters: " + parameters);
+            mCamera.setParameters(parameters);
+            mCamera.startPreview();
+            mCamera.takePicture(null, null, mPictureCallback);
+        } catch (Exception e) {
+            Log.e(getClass().getName(), "Failed to open camera", e);
+        }
+
+        return pictureFile;
+    }
+
+    private Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() {
+
+        @Override
+        public void onPictureTaken(byte[] bytes, Camera camera) {
+            Log.i(getClass().getName(), "onPictureTaken");
+
+            Log.i(getClass().getName(), "bytes.length: " + bytes.length);
+
+            // TODO: reduce image size
+
+            try {
+                FileOutputStream fileOutputStream = new FileOutputStream(pictureFile);
+                fileOutputStream.write(bytes);
+                fileOutputStream.close();
+            } catch (FileNotFoundException e) {
+                Log.i(getClass().getName(), null, e);
+            } catch (IOException e) {
+                Log.i(getClass().getName(), null, e);
+            } finally {
+                camera.stopPreview();
+                camera.release();
+            }
+        }
+    };
+}

app/src/main/java/org/literacyapp/analytics/util/DeviceInfoHelper.java

@@ -0,0 +1,21 @@
+package org.literacyapp.analytics.util;
+
+import android.content.Context;
+import android.os.Build;
+import android.util.Log;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+
+public class DeviceInfoHelper {
+
+    public static String getDeviceModel(Context context) {
+        String deviceModel = "";
+        try {
+            deviceModel = URLEncoder.encode(Build.MODEL, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            Log.e(DeviceInfoHelper.class.getName(), "Build.MODEL: " + Build.MODEL, e);
+        }
+        return deviceModel;
+    }
+}

app/src/main/java/org/literacyapp/analytics/util/DisplayHelper.java

@@ -20,14 +20,14 @@ public class DisplayHelper {
     public static File captureScreenshot() {
         Log.i(DisplayHelper.class.getName(), "captureScreenshot");
 
-        String screenshotsPath = Environment.getExternalStorageDirectory() + File.separator + ".literacyapp-analytics" + File.separator + "screenshots";
+        String screenshotsPath = Environment.getExternalStorageDirectory() + File.separator + ".literacyapp-analytics" + File.separator + "pictures";
         File screenshotsDir = new File(screenshotsPath);
         if (!screenshotsDir.exists()) {
             screenshotsDir.mkdirs();
         }
 
-        String dateFormatted = (String) DateFormat.format("yyyy-MM-dd_HH:mm:ss", Calendar.getInstance());
-        String fileName = "Screenshot_" + dateFormatted + ".png";
+        String dateFormatted = (String) DateFormat.format("yyyy-MM-dd_HHmmss", Calendar.getInstance());
+        String fileName = dateFormatted + "_screenshot.png";
         File screenshotFile = new File(screenshotsDir, fileName);
         Log.i(DisplayHelper.class.getName(), "screenshotFile: " + screenshotFile);
 
@@ -56,7 +56,6 @@ public static File resizeBitmap(File screenshotFile, int maxImageSize, boolean f
 
         // Save scaled bitmap as file
         String scaledScreenshotPath = screenshotFile.getAbsolutePath();
-        scaledScreenshotPath = scaledScreenshotPath.replace(".png", "_" + maxImageSize + ".png");
         Log.i(DisplayHelper.class.getName(), "scaledScreenshotPath: " + scaledScreenshotPath);
         File scaledScreenshotFile = new File(scaledScreenshotPath);
         try {