#1 Capture screenshot

.gitignore

@@ -1,40 +1,7 @@
-# Built application files
-*.apk
-*.ap_
-
-# Files for the ART/Dalvik VM
-*.dex
-
-# Java class files
-*.class
-
-# Generated files
-bin/
-gen/
-out/
-
-# Gradle files
-.gradle/
-build/
-
-# Local configuration file (sdk path, etc)
-local.properties
-
-# Proguard folder generated by Eclipse
-proguard/
-
-# Log Files
-*.log
-
-# Android Studio Navigation editor temp files
-.navigation/
-
-# Android Studio captures folder
-captures/
-
-# Intellij
 *.iml
-.idea/workspace.xml
-
-# Keystore files
-*.jks
+.gradle
+/local.properties
+/.idea
+.DS_Store
+/build
+/captures

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,24 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "23.0.1"
+
+    defaultConfig {
+        applicationId "org.literacyapp.analytics"
+        minSdkVersion 21
+        targetSdkVersion 23
+        versionCode 1000000
+        versionName "1.0.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    testCompile 'junit:junit:4.12'
+}

app/src/androidTest/java/org/literacyapp/analytics/ApplicationTest.java

@@ -0,0 +1,13 @@
+package org.literacyapp.analytics;
+
+import android.app.Application;
+import android.test.ApplicationTestCase;
+
+/**
+ * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ */
+public class ApplicationTest extends ApplicationTestCase<Application> {
+    public ApplicationTest() {
+        super(Application.class);
+    }
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="org.literacyapp.analytics">
+
+    <application
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name">
+
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <service
+            android:name=".service.ScreenshotJobService"
+            android:permission="android.permission.BIND_JOB_SERVICE"
+            android:enabled="true"
+            android:exported="true"></service>
+    </application>
+</manifest>

app/src/main/java/org/literacyapp/analytics/MainActivity.java

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+package org.literacyapp.analytics;
+
+import android.app.Activity;
+import android.app.job.JobInfo;
+import android.app.job.JobScheduler;
+import android.content.ComponentName;
+import android.content.Context;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.Toast;
+
+import org.literacyapp.analytics.service.ScreenshotJobService;
+import org.literacyapp.analytics.util.RootHelper;
+
+public class MainActivity extends Activity {
+
+    private Button mMainButton;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        Log.i(getClass().getName(), "onCreate");
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.activity_main);
+
+        mMainButton = (Button) findViewById(R.id.main_button);
+    }
+
+    @Override
+    protected void onStart() {
+        Log.i(getClass().getName(), "onStart");
+        super.onStart();
+
+        mMainButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Log.i(getClass().getName(), "mMainButton onClick");
+
+                // Request root access
+                boolean isRootPermissionGranted = RootHelper.runAsRoot(new String[] {
+                        "echo \"Do I have root?\" >/system/sd/temporary.txt\n",
+                        "exit\n"
+                });
+                Log.i(getClass().getName(), "isRootPermissionGranted: " + isRootPermissionGranted);
+                if (!isRootPermissionGranted) {
+                    Toast.makeText(getApplicationContext(), "Root permission was not granted. Please restart application.", Toast.LENGTH_LONG).show();
+                } else {
+                    Toast.makeText(getApplicationContext(), "Root permission was granted. Starting background job...", Toast.LENGTH_LONG).show();
+
+                    // Initiate background job for recording screenshots
+                    ComponentName componentName = new ComponentName(getApplicationContext(), ScreenshotJobService.class);
+                    JobInfo.Builder builder = new JobInfo.Builder(0, componentName);
+                    builder.setPeriodic(5 * 60 * 1000); // Every 5 minutes
+                    JobInfo screenshotJobInfo = builder.build();
+
+                    JobScheduler jobScheduler = (JobScheduler) getSystemService(Context.JOB_SCHEDULER_SERVICE);
+                    jobScheduler.schedule(screenshotJobInfo);
+                }
+
+                finish();
+            }
+        });
+    }
+}

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

@@ -0,0 +1,41 @@
+package org.literacyapp.analytics.service;
+
+import android.app.job.JobParameters;
+import android.app.job.JobService;
+import android.content.Context;
+import android.hardware.display.DisplayManager;
+import android.util.Log;
+import android.view.Display;
+
+import org.literacyapp.analytics.util.DisplayHelper;
+
+/**
+ * Service responsible for recording screenshots when the screen in switched on.
+ */
+public class ScreenshotJobService extends JobService {
+
+    @Override
+    public boolean onStartJob(JobParameters jobParameters) {
+        Log.i(getClass().getName(), "onStartJob");
+
+        // Detect if screen is active
+        DisplayManager displayManager = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
+        for (Display display : displayManager.getDisplays()) {
+            if (display.getState() != Display.STATE_OFF) {
+                Log.i(getClass().getName(), "display.getState(): " + display.getState());
+                DisplayHelper.captureScreenshot(this);
+            }
+        }
+
+        boolean asynchronousProcessing = false;
+        return asynchronousProcessing;
+    }
+
+    @Override
+    public boolean onStopJob(JobParameters jobParameters) {
+        Log.i(getClass().getName(), "onStopJob");
+
+        boolean restartJob = false;
+        return restartJob;
+    }
+}

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

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+package org.literacyapp.analytics.util;
+
+import android.content.Context;
+import android.text.format.DateFormat;
+import android.util.Log;
+
+import java.io.File;
+import java.util.Calendar;
+
+public class DisplayHelper {
+
+    public static void captureScreenshot(Context context) {
+        Log.i(DisplayHelper.class.getName(), "captureScreenshot");
+        String screenshotsPath = context.getFilesDir() + File.separator + "screenshots";
+        File screenshotsDir = new File(screenshotsPath);
+        if (!screenshotsDir.exists()) {
+            screenshotsDir.mkdir();
+        }
+
+        String dateFormatted = (String) DateFormat.format("yyyy-MM-dd_hh:mm:ss", Calendar.getInstance());
+        String fileName = "Screenshot_" + dateFormatted + ".png";
+        File screenshotFile = new File(screenshotsDir, fileName);
+        Log.i(DisplayHelper.class.getName(), "screenshotFile: " + screenshotFile);
+
+        boolean isScreencapSuccess = RootHelper.runAsRoot(new String[] {
+                "screencap " + screenshotFile.getAbsolutePath() + "\n"
+        });
+        Log.i(DisplayHelper.class.getName(), "isScreencapSuccess: " + isScreencapSuccess);
+        Log.i(DisplayHelper.class.getName(), "screenshotFile.exists(): " + screenshotFile.exists());
+
+        // Reduce image size
+        // TODO
+    }
+}

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

@@ -0,0 +1,56 @@
+package org.literacyapp.analytics.util;
+
+import android.text.TextUtils;
+import android.util.Log;
+
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+public class RootHelper {
+
+    public static boolean runAsRoot(String[] commands) {
+        Log.i(RootHelper.class.getName(), "runAsRoot");
+
+        boolean isSuccess = false;
+
+        try {
+            Process process = Runtime.getRuntime().exec("su");
+
+            DataOutputStream dataOutputStream = new DataOutputStream(process.getOutputStream());
+            for (String command : commands) {
+                Log.i(RootHelper.class.getName(), "command: " + command);
+                dataOutputStream.writeBytes(command + "\n");
+            }
+            dataOutputStream.writeBytes("exit\n");
+            dataOutputStream.flush();
+
+            process.waitFor();
+            int exitValue = process.exitValue();
+            Log.i(RootHelper.class.getName(), "exitValue: " + exitValue);
+            if (exitValue == 0) {
+                isSuccess = true;
+            }
+
+            InputStream inputStreamSuccess = process.getInputStream();
+            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStreamSuccess));
+            String successMessage = bufferedReader.readLine();
+            Log.i(RootHelper.class.getName(), "successMessage: " + successMessage);
+
+            InputStream inputStreamError = process.getErrorStream();
+            bufferedReader = new BufferedReader(new InputStreamReader(inputStreamError));
+            String errorMessage = bufferedReader.readLine();
+            if (TextUtils.isEmpty(errorMessage)) {
+                Log.i(RootHelper.class.getName(), "errorMessage: " + errorMessage);
+            } else {
+                Log.e(RootHelper.class.getName(), "errorMessage: " + errorMessage);
+            }
+        } catch (IOException | InterruptedException e) {
+            Log.e(RootHelper.class.getName(), null, e);
+        }
+
+        return isSuccess;
+    }
+}

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

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+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:orientation="vertical"
+    tools:context="org.literacyapp.analytics.MainActivity">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="This application requires root access. Press 'Continue' and then 'Remember my choice'." />
+    <Button
+        android:id="@+id/main_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Continue" />
+</LinearLayout>

app/src/main/res/values-w820dp/dimens.xml

@@ -0,0 +1,6 @@
+<resources>
+    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>

app/src/main/res/values/dimens.xml

@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>

app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Analytics (LiteracyApp)</string>
+</resources>

app/src/test/java/org/literacyapp/analytics/ExampleUnitTest.java

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+package org.literacyapp.analytics;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * To work on unit tests, switch the Test Artifact in the Build Variants view.
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() throws Exception {
+        assertEquals(4, 2 + 2);
+    }
+}

build.gradle

@@ -0,0 +1,28 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.1.2'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        mavenLocal()
+        jcenter()
+        mavenCentral()
+        maven {
+            url "http://archiva.educativo.eu:8081/repository/internal/"
+        }
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}