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-rw-r--r--core/java/android/content/Intent.java39
-rw-r--r--services/java/com/android/server/DockObserver.java115
-rw-r--r--services/java/com/android/server/SystemServer.java9
3 files changed, 163 insertions, 0 deletions
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index f9b082fecadf..a3517f859859 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -1838,6 +1838,14 @@ public class Intent implements Parcelable {
*/
public static final String CATEGORY_FRAMEWORK_INSTRUMENTATION_TEST =
"android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST";
+
+ /**
+ * Broadcast Action: The phone was docked or undocked. Includes the extra
+ * field {@link #EXTRA_DOCK_STATE}, containing the current dock state.
+ * @hide
+ */
+ public static final String ACTION_DOCK_EVENT = "android.intent.action.DOCK_EVENT";
+
// ---------------------------------------------------------------------
// ---------------------------------------------------------------------
// Standard extra data keys.
@@ -1960,6 +1968,37 @@ public class Intent implements Parcelable {
public static final String EXTRA_ALARM_COUNT = "android.intent.extra.ALARM_COUNT";
/**
+ * Used as an int extra field in {@link android.content.Intent#ACTION_DOCK_EVENT}
+ * intents to request the dock state. Possible values are
+ * {@link android.content.Intent#ACTION_DOCK_STATE_UNDOCKED},
+ * {@link android.content.Intent#ACTION_DOCK_STATE_DESK}, or
+ * {@link android.content.Intent#ACTION_DOCK_STATE_CAR}.
+ * @hide
+ */
+ public static final String EXTRA_DOCK_STATE = "android.intent.extra.DOCK_STATE";
+
+ /**
+ * Used as an int value for {@link android.content.Intent#EXTRA_DOCK_STATE}
+ * to represent that the phone is not in any dock.
+ * @hide
+ */
+ public static final int EXTRA_DOCK_STATE_UNDOCKED = 0;
+
+ /**
+ * Used as an int value for {@link android.content.Intent#EXTRA_DOCK_STATE}
+ * to represent that the phone is in a desk dock.
+ * @hide
+ */
+ public static final int EXTRA_DOCK_STATE_DESK = 1;
+
+ /**
+ * Used as an int value for {@link android.content.Intent#EXTRA_DOCK_STATE}
+ * to represent that the phone is in a car dock.
+ * @hide
+ */
+ public static final int EXTRA_DOCK_STATE_CAR = 2;
+
+ /**
* Used as a parcelable extra field in {@link #ACTION_APP_ERROR}, containing
* the bug report.
*
diff --git a/services/java/com/android/server/DockObserver.java b/services/java/com/android/server/DockObserver.java
new file mode 100644
index 000000000000..68ff416a8791
--- /dev/null
+++ b/services/java/com/android/server/DockObserver.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2008 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 com.android.server;
+
+import android.app.ActivityManagerNative;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.Message;
+import android.os.UEventObserver;
+import android.util.Log;
+
+import java.io.FileReader;
+import java.io.FileNotFoundException;
+
+/**
+ * <p>DockObserver monitors for a docking station.
+ */
+class DockObserver extends UEventObserver {
+ private static final String TAG = DockObserver.class.getSimpleName();
+ private static final boolean LOG = false;
+
+ private static final String DOCK_UEVENT_MATCH = "DEVPATH=/devices/virtual/switch/dock";
+ private static final String DOCK_STATE_PATH = "/sys/class/switch/dock/state";
+
+ private int mDockState;
+ private boolean mPendingIntent;
+
+ private final Context mContext;
+
+ public DockObserver(Context context) {
+ mContext = context;
+
+ startObserving(DOCK_UEVENT_MATCH);
+
+ init(); // set initial status
+ }
+
+ @Override
+ public void onUEvent(UEventObserver.UEvent event) {
+ if (Log.isLoggable(TAG, Log.VERBOSE)) {
+ Log.v(TAG, "Dock UEVENT: " + event.toString());
+ }
+
+ try {
+ update(Integer.parseInt(event.get("SWITCH_STATE")));
+ } catch (NumberFormatException e) {
+ Log.e(TAG, "Could not parse switch state from event " + event);
+ }
+ }
+
+ private synchronized final void init() {
+ char[] buffer = new char[1024];
+
+ int newState = mDockState;
+ try {
+ FileReader file = new FileReader(DOCK_STATE_PATH);
+ int len = file.read(buffer, 0, 1024);
+ newState = Integer.valueOf((new String(buffer, 0, len)).trim());
+
+ } catch (FileNotFoundException e) {
+ Log.w(TAG, "This kernel does not have dock station support");
+ } catch (Exception e) {
+ Log.e(TAG, "" , e);
+ }
+
+ update(newState);
+ }
+
+ private synchronized final void update(int newState) {
+ if (newState != mDockState) {
+ mDockState = newState;
+
+ mPendingIntent = true;
+ mHandler.sendEmptyMessage(0);
+ }
+ }
+
+ private synchronized final void sendIntent() {
+ // Pack up the values and broadcast them to everyone
+ Intent intent = new Intent(Intent.ACTION_DOCK_EVENT);
+ intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+ intent.putExtra(Intent.EXTRA_DOCK_STATE, mDockState);
+
+ // TODO: Should we require a permission?
+ if (Log.isLoggable(TAG, Log.VERBOSE)) {
+ Log.v(TAG, "Broadcasting dock state " + mDockState);
+ }
+ ActivityManagerNative.broadcastStickyIntent(intent, null);
+ }
+
+ private final Handler mHandler = new Handler() {
+ @Override
+ public void handleMessage(Message msg) {
+ if (mPendingIntent) {
+ sendIntent();
+ mPendingIntent = false;
+ }
+ }
+ };
+}
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 38bf63affaca..ce476ebc4e33 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -92,6 +92,7 @@ class ServerThread extends Thread {
BluetoothDeviceService bluetooth = null;
BluetoothA2dpService bluetoothA2dp = null;
HeadsetObserver headset = null;
+ DockObserver dock = null;
// Critical services...
try {
@@ -326,6 +327,14 @@ class ServerThread extends Thread {
}
try {
+ Log.i(TAG, "Starting DockObserver");
+ // Listen for dock station changes
+ dock = new DockObserver(context);
+ } catch (Throwable e) {
+ Log.e(TAG, "Failure starting DockObserver", e);
+ }
+
+ try {
Log.i(TAG, "Starting Backup Service");
ServiceManager.addService(Context.BACKUP_SERVICE, new BackupManagerService(context));
} catch (Throwable e) {
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-11-03 04:49:40 +0000