Hides screen attention when attention service is not avaliable.

If a wrong attention package is pushed to users devices, the screen
attention won't work. In this case, we should also hide the settings
as well.

Test: atest AdaptiveSleepPreferenceControllerTest
Bug: 148099790
Change-Id: Ieb4fd1008856024c23624f0eab3dfbfc3fc4ee3b

src/com/android/settings/display/AdaptiveSleepPreferenceController.java

@@ -17,8 +17,12 @@ import static android.provider.Settings.Secure.ADAPTIVE_SLEEP;
 
 import android.Manifest;
 import android.content.Context;
+import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.provider.Settings;
+import android.service.attention.AttentionService;
+import android.text.TextUtils;
 
 import com.android.settings.R;
 import com.android.settings.core.TogglePreferenceController;
@@ -62,10 +66,24 @@ public class AdaptiveSleepPreferenceController extends TogglePreferenceControlle
     public static int isControllerAvailable(Context context) {
         return context.getResources().getBoolean(
                 com.android.internal.R.bool.config_adaptive_sleep_available)
+                && isAttentionServiceAvailable(context)
                 ? AVAILABLE_UNSEARCHABLE
                 : UNSUPPORTED_ON_DEVICE;
     }
 
+    private static boolean isAttentionServiceAvailable(Context context) {
+        final PackageManager packageManager = context.getPackageManager();
+        final String resolvePackage = packageManager.getAttentionServicePackageName();
+        if (TextUtils.isEmpty(resolvePackage)) {
+            return false;
+        }
+        final Intent intent = new Intent(AttentionService.SERVICE_INTERFACE).setPackage(
+                resolvePackage);
+        final ResolveInfo resolveInfo = packageManager.resolveService(intent,
+                PackageManager.MATCH_SYSTEM_ONLY);
+        return resolveInfo != null && resolveInfo.serviceInfo != null;
+    }
+
     static boolean hasSufficientPermission(PackageManager packageManager) {
         final String attentionPackage = packageManager.getAttentionServicePackageName();
         return attentionPackage != null && packageManager.checkPermission(

tests/robotests/src/com/android/settings/display/AdaptiveSleepPreferenceControllerTest.java

@@ -16,17 +16,22 @@
 
 package com.android.settings.display;
 
-import static android.provider.Settings.System.ADAPTIVE_SLEEP;
+import static android.provider.Settings.Secure.ADAPTIVE_SLEEP;
+
+import static com.android.settings.core.BasePreferenceController.UNSUPPORTED_ON_DEVICE;
 
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.isA;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.when;
 
 import android.content.ContentResolver;
 import android.content.Context;
+import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.provider.Settings;
 
@@ -75,6 +80,14 @@ public class AdaptiveSleepPreferenceControllerTest {
         when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
     }
 
+    @Test
+    public void isControllerAvailable_ServiceUnavailable_returnUnsupported() {
+        doReturn(null).when(mPackageManager).resolveService(isA(Intent.class), anyInt());
+
+        assertThat(AdaptiveSleepPreferenceController.isControllerAvailable(mContext)).isEqualTo(
+                UNSUPPORTED_ON_DEVICE);
+    }
+
     @Test
     public void onPreferenceChange_turnOn_returnOn() {
         mController.onPreferenceChange(null, true);