Change APP_SWITCH key event to open Android 4.0 recent apps switcher

Without this patch it opens the old Gingerbread-style recent apps.

Thanks to XDA forum member evilisto for demonstrating how to make this change:
http://forum.xda-developers.com/showthread.php?t=1450138

Patch Set 2: Fixed commit dependencies
Patch Set 3: Open app switcher when key is released rather than when it is
             first pressed, to conform with the behaviour of other keys.

Change-Id: Iea04c3015b773b5f375a01a9ee30c5130de13dff

1 files changed, 14 insertions, 1 deletions

diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index ff7ccf6..61c6fce 100755
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -434,6 +434,7 @@ public class PhoneWindowManager implements WindowManagerPolicy {
     boolean mHideLockScreen;
     boolean mDismissKeyguard;
     boolean mHomePressed;
+    boolean mAppSwitchPressed;
     Intent mHomeIntent;
     Intent mCarDockIntent;
     Intent mDeskDockIntent;
@@ -1760,8 +1761,20 @@ public class PhoneWindowManager implements WindowManagerPolicy {
             }
             return 0;
         } else if (keyCode == KeyEvent.KEYCODE_APP_SWITCH) {
+            if (mAppSwitchPressed && !down) {
+                mAppSwitchPressed = false;
+                if (!canceled && !keyguardOn) {
+                    sendCloseSystemWindows(SYSTEM_DIALOG_REASON_RECENT_APPS);
+                    try {
+                        mStatusBarService.toggleRecentApps();
+                    } catch (RemoteException e) {
+                    }
+                }
+                return -1;
+            }
+
             if (down && repeatCount == 0) {
-                showOrHideRecentAppsDialog(RECENT_APPS_BEHAVIOR_SHOW_OR_DISMISS);
+                mAppSwitchPressed = true;
             }
             return -1;
         } else if (keyCode == KeyEvent.KEYCODE_BACK) {