modified example accordingto latest version of irext-core

pi3-smart-remote/app/build.gradle

@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 26
-    buildToolsVersion "26.0.0"
+    buildToolsVersion '26.0.2'
     defaultConfig {
         applicationId "net.irext.pi3sr"
         minSdkVersion 25
@@ -21,6 +21,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
+    provided 'com.google.android.things:androidthings:0.5.1-devpreview'
     compile 'com.android.support:appcompat-v7:26.+'
     compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
 }

pi3-smart-remote/app/src/main/AndroidManifest.xml

@@ -12,7 +12,7 @@
 
         <uses-library android:name="com.google.android.things" />
 
-        <activity android:name=".MainActivity">
+        <activity android:name=".ui.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />

pi3-smart-remote/app/src/main/java/net/irext/pi3sr/Pi3SRApplication.java

@@ -0,0 +1,13 @@
+package net.irext.pi3sr;
+
+import android.app.Application;
+
+/**
+ *
+ * Pi3SRApplication
+ *
+ * created by strawmanbobi 2017-06-25
+ */
+public class Pi3SRApplication extends Application {
+
+}

pi3-smart-remote/app/src/main/java/net/irext/pi3sr/driver/HCSR501.java

@@ -0,0 +1,63 @@
+package net.irext.pi3sr.driver;
+
+import android.util.Log;
+
+import com.google.android.things.pio.Gpio;
+import com.google.android.things.pio.GpioCallback;
+
+import java.io.IOException;
+
+/**
+ *
+ * HC-SR501 driver
+ *
+ * created by strawmanbobi 2017-06-25
+ */
+public class HCSR501 implements MotionSensor {
+
+    private static final String TAG = HCSR501.class.getSimpleName();
+
+    private final Gpio bus;
+
+    private final MotionSensor.Listener listener;
+
+    public HCSR501(Gpio bus, Listener listener) {
+        this.bus = bus;
+        this.listener = listener;
+    }
+
+    @Override
+    public void startup() {
+        try {
+            bus.setDirection(Gpio.DIRECTION_IN);
+            bus.setActiveType(Gpio.ACTIVE_HIGH);
+            bus.setEdgeTriggerType(Gpio.EDGE_RISING);
+        } catch (IOException e) {
+            throw new IllegalStateException("Sensor can't start - App is foobar'd", e);
+        }
+        try {
+            bus.registerGpioCallback(callback);
+        } catch (IOException e) {
+            throw new IllegalStateException("Sensor can't register callback", e);
+        }
+    }
+
+    private final GpioCallback callback = new GpioCallback() {
+        @Override
+        public boolean onGpioEdge(Gpio gpio) {
+            listener.onMovement();
+            return true;
+        }
+    };
+
+    @Override
+    public void shutdown() {
+        bus.unregisterGpioCallback(callback);
+        try {
+            bus.close();
+        } catch (IOException e) {
+            Log.e(TAG, "Failed to shut down. You might get errors next time you try to start.", e);
+        }
+    }
+
+}

pi3-smart-remote/app/src/main/java/net/irext/pi3sr/driver/MotionSensor.java

@@ -0,0 +1,19 @@
+package net.irext.pi3sr.driver;
+
+/**
+ *
+ * motion sensor interface
+ *
+ * created by strawmanbobi 2017-06-25
+ */
+public interface MotionSensor {
+
+    void startup();
+
+    void shutdown();
+
+    public interface Listener {
+        void onMovement();
+    }
+
+}

pi3-smart-remote/app/src/main/java/net/irext/pi3sr/ui/MainActivity.java

@@ -1,8 +1,16 @@
-package net.irext.pi3sr;
+package net.irext.pi3sr.ui;
 
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 
+import net.irext.pi3sr.R;
+
+/**
+ *
+ * MainActivity
+ *
+ * created by strawmanbobi 2017-06-25
+ */
 public class MainActivity extends AppCompatActivity {
 
     @Override

pi3-smart-remote/app/src/main/res/layout/activity_main.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="net.irext.pi3sr.MainActivity">
+    tools:context="net.irext.pi3sr.ui.MainActivity">
 
     <TextView
         android:layout_width="wrap_content"