Code aptation to Android 9

app/build.gradle

@@ -68,6 +68,10 @@ android {
     lintOptions {
         abortOnError false
     }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {

app/src/main/AndroidManifest.xml

@@ -16,6 +16,7 @@
   -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.hmatalonga.greenhub">
 
     <!-- Required to start service on boot -->
@@ -39,6 +40,12 @@
     <!-- Required for gps and location providers -->
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+
+    <permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+
     <!-- Required to get running apps -->
     <!--<uses-permission android:name="android.permission.READ_CALL_LOG" />-->
 
@@ -56,7 +63,8 @@
         android:label="@string/app_name"
         android:screenOrientation="portrait"
         android:supportsRtl="true"
-        android:theme="@style/Theme.GreenHub">
+        android:theme="@style/Theme.GreenHub"
+        android:usesCleartextTraffic="true">
 
         <meta-data android:name="AA_DB_NAME" android:value="GreenHub.db" />
 

app/src/main/java/com/hmatalonga/greenhub/Config.java

@@ -54,7 +54,7 @@ public final class Config {
 
     public static final String SERVER_STATUS_URL = "https://greenhubproject.org/";
     public static final String SERVER_URL_DEFAULT = "none";
-    public static final String SERVER_URL_DEVELOPMENT = "http://192.168.1.95:8080";
+    public static final String SERVER_URL_DEVELOPMENT = "http://192.168.1.251:8000/";
 
     public static final int DATABASE_VERSION = 5;
 

app/src/main/java/com/hmatalonga/greenhub/GreenHubApp.java

@@ -19,9 +19,13 @@
 import android.app.AlarmManager;
 import android.app.Application;
 import android.app.PendingIntent;
+import android.app.job.JobInfo;
+import android.app.job.JobScheduler;
 import android.content.Context;
 import android.content.Intent;
+import android.os.Build;
 import android.os.SystemClock;
+import android.support.annotation.RequiresApi;
 
 import com.crashlytics.android.Crashlytics;
 import com.hmatalonga.greenhub.managers.sampling.BatteryService;
@@ -103,9 +107,14 @@ public void startGreenHubService() {
             new Thread() {
 
                 public void run() {
+                    Intent service = new Intent(context, BatteryService.class);
                     try {
-                        Intent service = new Intent(context, BatteryService.class);
-                        context.startService(service);
+
+                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                            context.startForegroundService(service);
+                        } else {
+                            context.startService(service);
+                        }
                     } catch (IllegalStateException e) {
                         e.printStackTrace();
                     }

app/src/main/java/com/hmatalonga/greenhub/managers/sampling/BatteryService.java

@@ -1,11 +1,16 @@
 package com.hmatalonga.greenhub.managers.sampling;
 
 
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.os.Build;
 import android.os.IBinder;
+import android.support.v4.app.NotificationCompat;
 
 import com.hmatalonga.greenhub.util.SettingsUtils;
 
@@ -50,6 +55,23 @@ public void onCreate() {
             registerReceiver(estimator, mIntentFilter);
         }
 
+        super.onCreate();
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            String CHANNEL_ID = "BatteryServiceChannel";
+
+            NotificationChannel channel = new NotificationChannel(CHANNEL_ID,
+                    "Channel human readable title",
+                    NotificationManager.IMPORTANCE_DEFAULT);
+
+            ((NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE)).createNotificationChannel(channel);
+
+            Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID)
+                    .setContentTitle("")
+                    .setContentText("").build();
+            startForeground(1, notification);
+        }
+
     }
 
     @Override

app/src/main/java/com/hmatalonga/greenhub/managers/sampling/Inspector.java

@@ -92,7 +92,6 @@
 import com.hmatalonga.greenhub.models.data.Sample;
 import com.hmatalonga.greenhub.models.data.Settings;
 import com.hmatalonga.greenhub.util.LogUtils;
-import com.hmatalonga.greenhub.util.Notifier;
 import com.hmatalonga.greenhub.util.SettingsUtils;
 
 import org.greenrobot.eventbus.EventBus;
@@ -211,7 +210,7 @@ static Sample getSample(final Context context, Intent intent) {
         newSample.database = Config.DATABASE_VERSION;
 
         // Record first data point for CPU usage
-        long[] idleAndCpu1 = Cpu.readUsagePoint();
+        long[] idleAndCpu1 = Cpu.readUsagePoint(context);
 
         // If the sampler is running because of the SCREEN_ON or SCREEN_OFF
         // event/action,
@@ -437,7 +436,7 @@ static Sample getSample(final Context context, Intent intent) {
         }
 
         // Record second data point for cpu/idle time
-        long[] idleAndCpu2 = Cpu.readUsagePoint();
+        long[] idleAndCpu2 = Cpu.readUsagePoint(context);
 
         // CPU status
         long uptime = Cpu.getUptime();

app/src/main/java/com/hmatalonga/greenhub/managers/storage/GreenHubDbMigration.java

@@ -72,12 +72,12 @@ public void migrate(@NonNull DynamicRealm realm, long oldVersion, long newVersio
                         .addField("isDynamicSensor", boolean.class)
                         .addField("isWakeUpSensor", boolean.class)
                         .addField("maxDelay", int.class)
-                        .addField("maximumRange", float.class)
+                        .addField("maximumRange", double.class)
                         .addField("minDelay", int.class)
                         .addField("name", String.class)
-                        .addField("power", float.class)
+                        .addField("power", double.class)
                         .addField("reportingMode", int.class)
-                        .addField("resolution", float.class)
+                        .addField("resolution", double.class)
                         .addField("stringType", String.class)
                         .addField("codeType", int.class)
                         .addField("vendor", String.class)

app/src/main/java/com/hmatalonga/greenhub/models/Cpu.java

@@ -16,7 +16,10 @@
 
 package com.hmatalonga.greenhub.models;
 
+import android.content.Context;
+import android.os.HardwarePropertiesManager;
 import android.os.SystemClock;
+import android.util.Log;
 
 import java.io.IOException;
 import java.io.RandomAccessFile;
@@ -55,22 +58,32 @@ public class Cpu {
      * splitting.:)
      */
 
-    public static synchronized long[] readUsagePoint() {
+    public static synchronized long[] readUsagePoint(Context context) {
         long idle = 0;
         long cpu = 0;
 
         try {
-            RandomAccessFile reader = new RandomAccessFile("/proc/stat", "r");
+            HardwarePropertiesManager propertiesManager = null;
+            RandomAccessFile reader = null;
+            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
+                reader = new RandomAccessFile("/proc/self/stat", "r");
+            } else {
+                reader = new RandomAccessFile("/proc/stat", "r");
+            }
 
             String load = reader.readLine();
             String[] tokens = load.split(" ");
             for (int i = 2; i <= 8; i++) {
-                // 5 index has idle value
-                if (i == 5) {
-                    idle = Long.parseLong(tokens[i]);
-                    continue;
+                try {
+                    // 5 index has idle value
+                    if (i == 5) {
+                        idle = Long.parseLong(tokens[i]);
+                        continue;
+                    }
+                    cpu += Long.parseLong(tokens[i]);
+                } catch (NumberFormatException ex) {
+                    Log.i(TAG, "Parser: " + ex.getMessage() + " - " + tokens[i]);
                 }
-                cpu += Long.parseLong(tokens[i]);
             }
             reader.close();
         } catch (IOException e) {

app/src/main/java/com/hmatalonga/greenhub/models/Sensors.java

@@ -108,7 +108,6 @@ public static void clearSensorsMap() {
         sensorsMap = new HashMap<>();
     }
 
-    @TargetApi(23)
     private static void getAttributesNewVersion(Sensor sensor, SensorDetails details) {
         if (SDK_VERSION > 23) {
             details.id = sensor.getId();

app/src/main/java/com/hmatalonga/greenhub/models/data/SensorDetails.java

@@ -34,19 +34,19 @@ public class SensorDetails extends RealmObject {
     //This value is defined only for continuous and on-change sensors.
     public int maxDelay;
 
-    public float maximumRange;
+    public double maximumRange;
 
     public int minDelay;
 
     public String name;
 
     //the power in mA used by this sensor while in use
-    public float power;
+    public double power;
 
     //Each sensor has exactly one reporting mode associated with it.
     public int reportingMode;
 
-    public float resolution;
+    public double resolution;
 
     public String stringType;
 

app/src/main/java/com/hmatalonga/greenhub/network/CommunicationManager.java

@@ -19,6 +19,7 @@
 import android.content.Context;
 import android.os.Handler;
 
+import com.google.gson.GsonBuilder;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import com.hmatalonga.greenhub.BuildConfig;
@@ -43,6 +44,7 @@
 import org.greenrobot.eventbus.EventBus;
 
 import java.util.Iterator;
+import java.util.Optional;
 
 import io.realm.Realm;
 import retrofit2.Call;
@@ -320,7 +322,19 @@ private JsonObject bundleSample(final Sample sample) {
 
         // CpuStatus
         child = new JsonObject();
-        child.addProperty("cpuUsage", sample.cpuStatus.cpuUsage);
+        String s = sample.cpuStatus.cpuUsage + "";
+        Double cpuUsage = null;
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
+            cpuUsage = Optional.ofNullable(s).filter(v -> !"NaN".equalsIgnoreCase(v))
+                    .map(v -> sample.cpuStatus.cpuUsage).orElse(0.0);
+        } else {
+            try {
+                cpuUsage = new Double(s);
+            } catch (Exception e) {
+                LogUtils.logE(TAG, "cpuUsage error", e);
+            }
+        }
+        child.addProperty("cpuUsage", cpuUsage);
         child.addProperty("upTime", sample.cpuStatus.upTime);
         child.addProperty("sleepTime", sample.cpuStatus.sleepTime);
         root.add("cpuStatus", child);

app/src/main/java/com/hmatalonga/greenhub/ui/MainActivity.java

@@ -29,7 +29,9 @@
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.os.CpuUsageInfo;
 import android.os.Handler;
+import android.os.PowerManager;
 import android.support.annotation.NonNull;
 import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.Snackbar;