Optimizations & refactoring

Small additions (Stop server button in notification)
Show notification on Android Oreo
Rewrite source code app from Java to Kotlin

app/build.gradle

@@ -1,13 +1,16 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
 
 android {
     compileSdkVersion 27
     defaultConfig {
         applicationId "io.scer.pocketmine"
         minSdkVersion 15
         targetSdkVersion 27
-        versionCode 4
-        versionName "1.0.1"
+        versionCode 6
+        versionName "1.1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
@@ -21,8 +24,12 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'com.android.support:appcompat-v7:27.1.1'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
+    implementation 'com.android.support:design:27.1.1'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
 }
+repositories {
+    mavenCentral()
+}

app/src/main/AndroidManifest.xml

@@ -7,7 +7,8 @@
 
 
     <application
-        android:allowBackup="true"
+        android:name=".App"
+        android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
@@ -24,7 +25,8 @@
         <service
             android:name="io.scer.pocketmine.ServerService"
             android:icon="@mipmap/ic_launcher"
-            android:label="@string/app_name" />
+            android:label="@string/app_name"
+            android:exported="false"/>
 
         <activity
             android:name="io.scer.pocketmine.ConsoleActivity"

app/src/main/java/io/scer/pocketmine/Application.kt

@@ -0,0 +1,32 @@
+package io.scer.pocketmine
+
+import android.app.NotificationManager
+import android.app.NotificationChannel
+import android.os.Build
+import android.app.Application
+import android.support.annotation.RequiresApi
+
+const val CHANNEL_ID = "pocketmine_service_channel"
+
+class App : Application() {
+
+    override fun onCreate() {
+        super.onCreate()
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            createNotificationChannel()
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun createNotificationChannel() {
+        val serviceChannel = NotificationChannel(
+                CHANNEL_ID,
+                "Pocketmine Service Channel",
+                NotificationManager.IMPORTANCE_DEFAULT
+        )
+
+        val manager = getSystemService(NotificationManager::class.java)
+        manager!!.createNotificationChannel(serviceChannel)
+    }
+}

app/src/main/java/io/scer/pocketmine/ConsoleActivity.kt

@@ -0,0 +1,65 @@
+package io.scer.pocketmine
+
+import android.annotation.SuppressLint
+import android.os.Bundle
+import android.os.Handler
+import android.os.Message
+import android.support.v7.app.AppCompatActivity
+import android.view.Menu
+import android.view.MenuItem
+import android.widget.ScrollView
+import io.scer.pocketmine.server.Server
+import kotlinx.android.synthetic.main.activity_console.*
+
+class ConsoleActivity : AppCompatActivity(), Handler.Callback {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_console)
+
+        instance = this
+
+        labelLog.textSize = MainActivity.fontSize.toFloat()
+
+        send.setOnClickListener {
+            Server.getInstance().sendCommand(editCommand.text.toString())
+            editCommand.setText("")
+        }
+
+        labelLog.text = currentLog
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.console, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            R.id.clear -> {
+                labelLog.text = ""
+                currentLog = ""
+            }
+        }
+        return super.onOptionsItemSelected(item)
+    }
+
+    override fun handleMessage(message: Message): Boolean {
+        return false
+    }
+
+    companion object {
+        @SuppressLint("StaticFieldLeak")
+        var instance: ConsoleActivity? = null
+        var currentLog = ""
+
+        fun log(text: String) {
+            currentLog += text
+            if (instance != null) {
+                instance!!.runOnUiThread {
+                    instance!!.labelLog.append(text)
+                    instance!!.scroll.fullScroll(ScrollView.FOCUS_DOWN)
+                }
+            }
+        }
+    }
+}