Fix implicit DPadUtil dependency for longevity

UiDevice instance that DPadUtil depends on needs to
be explictly set ahead in case that test runner is not
from android-support-library

Bug: 31801739
Change-Id: Iaef8d4dabafedeed4a472246abd2cefd2ee9f24b
diff --git a/libraries/launcher-helper/src/android/support/test/launcherhelper/LeanbackLauncherStrategy.java b/libraries/launcher-helper/src/android/support/test/launcherhelper/LeanbackLauncherStrategy.java
index 59084ae..cac78a1 100644
--- a/libraries/launcher-helper/src/android/support/test/launcherhelper/LeanbackLauncherStrategy.java
+++ b/libraries/launcher-helper/src/android/support/test/launcherhelper/LeanbackLauncherStrategy.java
@@ -20,7 +20,12 @@
 import android.os.RemoteException;
 import android.os.SystemClock;
 import android.platform.test.utils.DPadUtil;
-import android.support.test.uiautomator.*;
+import android.support.test.uiautomator.By;
+import android.support.test.uiautomator.BySelector;
+import android.support.test.uiautomator.Direction;
+import android.support.test.uiautomator.UiDevice;
+import android.support.test.uiautomator.UiObject2;
+import android.support.test.uiautomator.Until;
 import android.util.Log;
 
 import java.io.ByteArrayOutputStream;
@@ -38,7 +43,7 @@
     private static final int NOTIFICATION_WAIT_TIME = 30000;
 
     protected UiDevice mDevice;
-    protected DPadUtil mDPadUtil = new DPadUtil();
+    protected DPadUtil mDPadUtil;
 
 
     /**
@@ -55,6 +60,7 @@
     @Override
     public void setUiDevice(UiDevice uiDevice) {
         mDevice = uiDevice;
+        mDPadUtil = new DPadUtil(mDevice);
     }
 
     /**
diff --git a/utils/dpad/src/android/platform/test/utils/DPadUtil.java b/utils/dpad/src/android/platform/test/utils/DPadUtil.java
index dfd7fdf..3e7f1d6 100644
--- a/utils/dpad/src/android/platform/test/utils/DPadUtil.java
+++ b/utils/dpad/src/android/platform/test/utils/DPadUtil.java
@@ -18,7 +18,6 @@
 
 import android.app.Instrumentation;
 import android.os.SystemClock;
-import android.support.test.InstrumentationRegistry;
 import android.support.test.uiautomator.Direction;
 import android.support.test.uiautomator.EventCondition;
 import android.support.test.uiautomator.UiDevice;
@@ -35,14 +34,18 @@
     private UiDevice mDevice;
 
 
-    public DPadUtil() {
-        mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
-    }
-
     public DPadUtil(Instrumentation instrumentation) {
         mDevice = UiDevice.getInstance(instrumentation);
     }
 
+    public DPadUtil(UiDevice uiDevice) {
+        mDevice = uiDevice;
+    }
+
+    public void setUiDevice(UiDevice uiDevice) {
+        mDevice = uiDevice;
+    }
+
     public boolean pressDPad(Direction direction) {
         return pressDPad(direction, 1, DPAD_DEFAULT_WAIT_TIME_MS);
     }