Update to android things sdk 0.7 and new drivers

Updated to use Android Things SDK 0.7-devpreview
Updated to the API changes in DP7

Bug: 71717279
Change-Id: I24d457647a5a4aa91c50f0550ff45f42a78e9f8a

Author: mangini

app/build.gradle

@@ -37,7 +37,8 @@ repositories {
 }
 
 dependencies {
-    implementation 'com.google.android.things.contrib:driver-button:0.4'
+    implementation 'com.android.support:support-annotations:27.1.0'
+    implementation 'com.google.android.things.contrib:driver-button:0.6'
     implementation 'org.tensorflow:tensorflow-lite:0.1.1'
-    compileOnly 'com.google.android.things:androidthings:0.6.1-devpreview'
+    compileOnly 'com.google.android.things:androidthings:0.7-devpreview'
 }

app/src/main/java/com/example/androidthings/imageclassifier/ImageClassifierActivity.java

@@ -40,7 +40,7 @@
 import com.google.android.things.contrib.driver.button.Button;
 import com.google.android.things.contrib.driver.button.ButtonInputDriver;
 import com.google.android.things.pio.Gpio;
-import com.google.android.things.pio.PeripheralManagerService;
+import com.google.android.things.pio.PeripheralManager;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -105,9 +105,9 @@ private void init() {
      * This method should only be called when running on an Android Things device.
      */
     private void initPIO() {
-        PeripheralManagerService pioService = new PeripheralManagerService();
+        PeripheralManager pioManager = PeripheralManager.getInstance();
         try {
-            mReadyLED = pioService.openGpio(BoardDefaults.getGPIOForLED());
+            mReadyLED = pioManager.openGpio(BoardDefaults.getGPIOForLED());
             mReadyLED.setDirection(Gpio.DIRECTION_OUT_INITIALLY_LOW);
             mButtonDriver = new ButtonInputDriver(
                     BoardDefaults.getGPIOForButton(),

build.gradle

@@ -14,6 +14,7 @@ buildscript {
 
 allprojects {
     repositories {
+        google()
         jcenter()
     }
 }