Plumb remove functionality through (950f6383) · Commits · e / os / android_packages_apps_Settings

src/com/android/settings/biometrics/face/FaceSettings.java

+8 −1

Original line number	Diff line number	Diff line
		@@ -59,6 +59,10 @@ public class FaceSettings extends DashboardFragment {
		private byte[] mToken;
		private FaceSettingsAttentionPreferenceController mAttentionController;

		private final FaceSettingsRemoveButtonPreferenceController.Listener mRemovalListener = () -> {
		getActivity().finish();
		};

		public static boolean isAvailable(Context context) {
		FaceManager manager = Utils.getFaceManagerOrNull(context);
		return manager != null && manager.isHardwareDetected();
		@@ -146,10 +150,13 @@ public class FaceSettings extends DashboardFragment {
		protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
		final List<AbstractPreferenceController> controllers =
		buildPreferenceControllers(context, getSettingsLifecycle());
		// There's no great way of doing this right now :/
		for (AbstractPreferenceController controller : controllers) {
		if (controller instanceof FaceSettingsAttentionPreferenceController) {
		mAttentionController = (FaceSettingsAttentionPreferenceController) controller;
		break;
		} else if (controller instanceof FaceSettingsRemoveButtonPreferenceController) {
		((FaceSettingsRemoveButtonPreferenceController) controller)
		.setListener(mRemovalListener);
		}
		}

src/com/android/settings/biometrics/face/FaceSettingsRemoveButtonPreferenceController.java

+63 −1

Original line number	Diff line number	Diff line
		@@ -17,8 +17,13 @@
		package com.android.settings.biometrics.face;

		import android.content.Context;
		import android.hardware.face.Face;
		import android.hardware.face.FaceManager;
		import android.os.UserHandle;
		import android.util.Log;
		import android.view.View;
		import android.widget.Button;
		import android.widget.Toast;

		import androidx.preference.Preference;

		@@ -26,18 +31,61 @@ import com.android.settings.R;
		import com.android.settings.core.BasePreferenceController;
		import com.android.settingslib.widget.LayoutPreference;

		import java.util.List;

		/**
		* Controller for the remove button.
		* Controller for the remove button. This assumes that there is only a single face enrolled. The UI
		* will likely change if multiple enrollments are allowed/supported.
		*/
		public class FaceSettingsRemoveButtonPreferenceController extends BasePreferenceController
		implements View.OnClickListener {

		private static final String TAG = "FaceSettings/Remove";
		private static final String KEY = "security_settings_face_delete_faces_container";

		interface Listener {
		void onRemoved();
		}

		private Button mButton;
		private List<Face> mFaces;
		private Listener mListener;

		private final Context mContext;
		private final int mUserId;
		private final FaceManager mFaceManager;
		private final FaceManager.RemovalCallback mRemovalCallback = new FaceManager.RemovalCallback() {
		@Override
		public void onRemovalError(Face face, int errMsgId, CharSequence errString) {
		Log.e(TAG, "Unable to remove face: " + face.getBiometricId()
		+ " error: " + errMsgId + " " + errString);
		Toast.makeText(mContext, errString, Toast.LENGTH_SHORT).show();
		}

		@Override
		public void onRemovalSucceeded(Face face, int remaining) {
		if (remaining == 0) {
		mFaces = mFaceManager.getEnrolledFaces(mUserId);
		if (!mFaces.isEmpty()) {
		mButton.setEnabled(true);
		} else {
		mListener.onRemoved();
		}
		} else {
		Log.v(TAG, "Remaining: " + remaining);
		}
		}
		};

		public FaceSettingsRemoveButtonPreferenceController(Context context, String preferenceKey) {
		super(context, preferenceKey);
		mContext = context;
		mFaceManager = context.getSystemService(FaceManager.class);
		// TODO: Use the profile-specific userId instead
		mUserId = UserHandle.myUserId();
		if (mFaceManager != null) {
		mFaces = mFaceManager.getEnrolledFaces(mUserId);
		}
		}

		public FaceSettingsRemoveButtonPreferenceController(Context context) {
		@@ -66,7 +114,21 @@ public class FaceSettingsRemoveButtonPreferenceController extends BasePreference
		@Override
		public void onClick(View v) {
		if (v == mButton) {
		mButton.setEnabled(false);
		if (mFaces.isEmpty()) {
		Log.e(TAG, "No faces");
		return;
		}
		if (mFaces.size() > 1) {
		Log.e(TAG, "Multiple enrollments: " + mFaces.size());
		}

		// Remove the first/only face
		mFaceManager.remove(mFaces.get(0), mUserId, mRemovalCallback);
		}
		}

		public void setListener(Listener listener) {
		mListener = listener;
		}
		}