commit 96e9cc5700c63c872f29f488129daf34f95292d2
author Anthony Hugh <ahugh@google.com> Tue Jul 12 15:17:24 2016 -0700
committer Anthony Hugh <ahugh@google.com> Wed Aug 03 15:24:58 2016 -0700
tree cde58a70366c0bfa31fcc05bb0a0815e3350cdc7
parent f3c613335a7bb9303211857185df3ed0bcbb6a7f

Add panic detection to back button

Adds "panic" detection to the back button.  Implemented solution
uses 4x button presses in a short duration to detect for "panic".
The value used to determine the duration between key up and key down
that still count as a multi-button press is configurable via the
Settings Provider.

BUG: 28027764

Change-Id: Ibf1370ff3cb539a9a54002a8704922744a3ca5d7

packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java

diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
index d27f1f8..31c5b36 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
@@ -2090,7 +2090,7 @@
         }
 
         private final class UpgradeController {
-            private static final int SETTINGS_VERSION = 130;
+            private static final int SETTINGS_VERSION = 131;
 
             private final int mUserId;
 
@@ -2398,6 +2398,22 @@
                     currentVersion = 130;
                 }
 
+                if (currentVersion == 130) {
+                    // Initialize new multi-press timeout to default value
+                    final SettingsState systemSecureSettings = getSecureSettingsLocked(userId);
+                    final String oldValue = systemSecureSettings.getSettingLocked(
+                            Settings.Secure.MULTI_PRESS_TIMEOUT).getValue();
+                    if (TextUtils.equals(null, oldValue)) {
+                        systemSecureSettings.insertSettingLocked(
+                                Settings.Secure.MULTI_PRESS_TIMEOUT,
+                                String.valueOf(getContext().getResources().getInteger(
+                                        R.integer.def_multi_press_timeout_millis)),
+                                SettingsState.SYSTEM_PACKAGE_NAME);
+                    }
+
+                    currentVersion = 131;
+                }
+
                 if (currentVersion != newVersion) {
                     Slog.w("SettingsProvider", "warning: upgrading settings database to version "
                             + newVersion + " left it at "