Expose UwbManager through Context.getSystemService am: 3163bf0d35

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1504101

Change-Id: I14aa423224f37447024ddb4cc67cabe06d60a30a

core/java/android/app/SystemServiceRegistry.java

@@ -189,6 +189,7 @@ import android.telephony.TelephonyRegistryManager;
 import android.util.ArrayMap;
 import android.util.Log;
 import android.util.Slog;
+import android.uwb.UwbManager;
 import android.view.ContextThemeWrapper;
 import android.view.LayoutInflater;
 import android.view.WindowManager;
@@ -719,6 +720,14 @@ public final class SystemServiceRegistry {
                 return new SerialManager(ctx, ISerialManager.Stub.asInterface(b));
             }});
 
+        registerService(Context.UWB_SERVICE, UwbManager.class,
+                new CachedServiceFetcher<UwbManager>() {
+                    @Override
+                    public UwbManager createService(ContextImpl ctx) {
+                        return UwbManager.getInstance();
+                    }
+                });
+
         registerService(Context.VIBRATOR_SERVICE, Vibrator.class,
                 new CachedServiceFetcher<Vibrator>() {
             @Override

core/java/android/content/Context.java

@@ -3513,6 +3513,7 @@ public abstract class Context {
             //@hide: TIME_ZONE_DETECTOR_SERVICE,
             PERMISSION_SERVICE,
             LIGHTS_SERVICE,
+            UWB_SERVICE,
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface ServiceName {}
@@ -5177,6 +5178,15 @@ public abstract class Context {
      */
     public static final String LIGHTS_SERVICE = "lights";
 
+    /**
+     * Use with {@link #getSystemService(String)} to retrieve a
+     * {@link android.uwb.UwbManager}.
+     *
+     * @see #getSystemService(String)
+     * @hide
+     */
+    public static final String UWB_SERVICE = "uwb";
+
     /**
      * Use with {@link #getSystemService(String)} to retrieve a
      * {@link android.app.DreamManager} for controlling Dream states.

core/java/android/content/pm/PackageManager.java

@@ -2498,6 +2498,15 @@ public abstract class PackageManager {
     @SdkConstant(SdkConstantType.FEATURE)
     public static final String FEATURE_TELEPHONY_IMS = "android.hardware.telephony.ims";
 
+    /**
+     * Feature for {@link #getSystemAvailableFeatures} and
+     * {@link #hasSystemFeature}: The device is capable of communicating with
+     * other devices via ultra wideband.
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.FEATURE)
+    public static final String FEATURE_UWB = "android.hardware.uwb";
+
     /**
      * Feature for {@link #getSystemAvailableFeatures} and
      * {@link #hasSystemFeature}: The device supports connecting to USB devices

core/java/android/uwb/UwbManager.java

@@ -19,7 +19,11 @@ package android.uwb;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.SuppressLint;
+import android.annotation.SystemService;
+import android.content.Context;
+import android.os.IBinder;
 import android.os.PersistableBundle;
+import android.os.ServiceManager;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -36,7 +40,11 @@ import java.util.concurrent.Executor;
  *
  * @hide
  */
+@SystemService(Context.UWB_SERVICE)
 public final class UwbManager {
+    private IUwbAdapter mUwbAdapter;
+    private static final String SERVICE_NAME = "uwb";
+
     /**
      * Interface for receiving UWB adapter state changes
      */
@@ -96,10 +104,30 @@ public final class UwbManager {
 
     /**
      * Use <code>Context.getSystemService(UwbManager.class)</code> to get an instance.
+     *
+     * @param adapter an instance of an {@link android.uwb.IUwbAdapter}
      */
-    private UwbManager() {
+    private UwbManager(IUwbAdapter adapter) {
-        throw new UnsupportedOperationException();
+        mUwbAdapter = adapter;
     }
+
+    /**
+     * @hide
+     */
+    public static UwbManager getInstance() {
+        IBinder b = ServiceManager.getService(SERVICE_NAME);
+        if (b == null) {
+            return null;
+        }
+
+        IUwbAdapter adapter = IUwbAdapter.Stub.asInterface(b);
+        if (adapter == null) {
+            return null;
+        }
+
+        return new UwbManager(adapter);
+    }
+
     /**
      * Register an {@link AdapterStateCallback} to listen for UWB adapter state changes
      * <p>The provided callback will be invoked by the given {@link Executor}.

core/tests/uwbtests/src/android/uwb/UwbManagerTest.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.uwb;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import android.content.Context;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/**
+ * Test of {@link UwbManager}.
+ */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class UwbManagerTest {
+
+    public final Context mContext = InstrumentationRegistry.getContext();
+
+    @Test
+    public void testServiceAvailable() {
+        UwbManager manager = mContext.getSystemService(UwbManager.class);
+        if (UwbTestUtils.isUwbSupported(mContext)) {
+            assertNotNull(manager);
+        } else {
+            assertNull(manager);
+        }
+    }
+}

core/tests/uwbtests/src/android/uwb/UwbTestUtils.java

@@ -16,6 +16,8 @@
 
 package android.uwb;
 
+import android.content.Context;
+import android.content.pm.PackageManager;
 import android.os.SystemClock;
 
 import java.util.ArrayList;
@@ -24,6 +26,11 @@ import java.util.List;
 public class UwbTestUtils {
     private UwbTestUtils() {}
 
+    public static boolean isUwbSupported(Context context) {
+        PackageManager packageManager = context.getPackageManager();
+        return packageManager.hasSystemFeature(PackageManager.FEATURE_UWB);
+    }
+
     public static AngleMeasurement getAngleMeasurement() {
         return new AngleMeasurement.Builder()
                 .setRadians(getDoubleInRange(-Math.PI, Math.PI))