Add setting to disable camera gesture (5a5e7d64) · Commits · e / os / android_frameworks_base

core/java/android/provider/Settings.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -5666,6 +5666,13 @@ public final class Settings {
		*/
		public static final String ASSISTANT = "assistant";

		/**
		* Whether the camera launch gesture should be disabled.
		*
		* @hide
		*/
		public static final String CAMERA_GESTURE_DISABLED = "camera_gesture_disabled";

		/**
		* This are the settings to be backed up.
		*
		@@ -5722,6 +5729,7 @@ public final class Settings {
		MOUNT_UMS_NOTIFY_ENABLED,
		SLEEP_TIMEOUT,
		DOUBLE_TAP_TO_WAKE,
		CAMERA_GESTURE_DISABLED,
		};

		/**

services/core/java/com/android/server/GestureLauncherService.java

+69 −7

Original line number	Diff line number	Diff line
		@@ -16,21 +16,26 @@

		package com.android.server;

		import android.app.ActivityManager;
		import android.app.KeyguardManager;
		import android.content.BroadcastReceiver;
		import android.content.ComponentName;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.content.pm.PackageManager;
		import android.content.pm.ResolveInfo;
		import android.content.res.Resources;
		import android.database.ContentObserver;
		import android.hardware.Sensor;
		import android.hardware.SensorEvent;
		import android.hardware.SensorEventListener;
		import android.hardware.SensorManager;
		import android.os.Handler;
		import android.os.PowerManager;
		import android.os.Vibrator;
		import android.os.PowerManager.WakeLock;
		import android.os.SystemProperties;
		import android.os.Vibrator;
		import android.provider.MediaStore;
		import android.provider.Settings;
		import android.util.Slog;
		@@ -56,6 +61,8 @@ class GestureLauncherService extends SystemService {

		/** The wake lock held when a gesture is detected. */
		private WakeLock mWakeLock;
		private boolean mRegistered;
		private int mUserId;

		public GestureLauncherService(Context context) {
		super(context);
		@@ -81,22 +88,51 @@ class GestureLauncherService extends SystemService {
		mWakeLock = powerManager.newWakeLock(
		PowerManager.SCREEN_BRIGHT_WAKE_LOCK \| PowerManager.ACQUIRE_CAUSES_WAKEUP,
		"GestureLauncherService");
		if (isCameraLaunchEnabled(resources)) {
		updateCameraRegistered();

		mUserId = ActivityManager.getCurrentUser();
		mContext.registerReceiver(mUserReceiver, new IntentFilter(Intent.ACTION_USER_SWITCHED));
		registerContentObserver();
		}
		}

		private void registerContentObserver() {
		mContext.getContentResolver().registerContentObserver(
		Settings.Secure.getUriFor(Settings.Secure.CAMERA_GESTURE_DISABLED),
		false, mSettingObserver, mUserId);
		}

		private void updateCameraRegistered() {
		Resources resources = mContext.getResources();
		if (isCameraLaunchSettingEnabled(mContext, mUserId)) {
		registerCameraLaunchGesture(resources);
		} else {
		unregisterCameraLaunchGesture();
		}
		}

		private void unregisterCameraLaunchGesture() {
		if (mRegistered) {
		mRegistered = false;
		SensorManager sensorManager = (SensorManager) mContext.getSystemService(
		Context.SENSOR_SERVICE);
		sensorManager.unregisterListener(mGestureListener);
		}
		}

		/**
		* Registers for the camera launch gesture.
		*/
		private void registerCameraLaunchGesture(Resources resources) {
		if (mRegistered) {
		return;
		}
		SensorManager sensorManager = (SensorManager) mContext.getSystemService(
		Context.SENSOR_SERVICE);
		int cameraLaunchGestureId = resources.getInteger(
		com.android.internal.R.integer.config_cameraLaunchGestureSensorType);
		if (cameraLaunchGestureId != -1) {
		boolean registered = false;
		mRegistered = false;
		String sensorName = resources.getString(
		com.android.internal.R.string.config_cameraLaunchGestureSensorStringType);
		mCameraLaunchSensor = sensorManager.getDefaultSensor(
		@@ -108,7 +144,7 @@ class GestureLauncherService extends SystemService {
		// makes the code more robust.
		if (mCameraLaunchSensor != null) {
		if (sensorName.equals(mCameraLaunchSensor.getStringType())) {
		registered = sensorManager.registerListener(mGestureListener,
		mRegistered = sensorManager.registerListener(mGestureListener,
		mCameraLaunchSensor, 0);
		} else {
		String message = String.format("Wrong configuration. Sensor type and sensor "
		@@ -117,12 +153,18 @@ class GestureLauncherService extends SystemService {
		throw new RuntimeException(message);
		}
		}
		if (DBG) Slog.d(TAG, "Camera launch sensor registered: " + registered);
		if (DBG) Slog.d(TAG, "Camera launch sensor registered: " + mRegistered);
		} else {
		if (DBG) Slog.d(TAG, "Camera launch sensor is not specified.");
		}
		}

		public static boolean isCameraLaunchSettingEnabled(Context context, int userId) {
		return isCameraLaunchEnabled(context.getResources())
		&& (Settings.Secure.getIntForUser(context.getContentResolver(),
		Settings.Secure.CAMERA_GESTURE_DISABLED, 0, userId) == 0);
		}

		/**
		* Whether to enable the camera launch gesture.
		*/
		@@ -142,6 +184,26 @@ class GestureLauncherService extends SystemService {
		return isCameraLaunchEnabled(resources);
		}

		private final BroadcastReceiver mUserReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
		if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) {
		mUserId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0);
		mContext.getContentResolver().unregisterContentObserver(mSettingObserver);
		registerContentObserver();
		updateCameraRegistered();
		}
		}
		};

		private final ContentObserver mSettingObserver = new ContentObserver(new Handler()) {
		public void onChange(boolean selfChange, android.net.Uri uri, int userId) {
		if (userId == mUserId) {
		updateCameraRegistered();
		}
		}
		};

		private final class GestureEventListener implements SensorEventListener {
		@Override
		public void onSensorChanged(SensorEvent event) {