Improve "Try again in 1 seconds" behavior in lockscreen

When user fails an authentification in lockscreen many times,
"Try again in 30 seconds." is displayed and a 30 seconds
timer starts to count backwards.

This lets "Try again in 1 seconds" to be displayed for one second.

Bug: 31078006
Change-Id: I6c7de2b751582bb06a93e583b710f83201da1728

2 files changed, 13 insertions, 5 deletions

diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java b/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java
index 94286ec6a785..5aa673b40124 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java
@@ -44,6 +44,7 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout
     protected View mEcaView;
     protected boolean mEnableHaptics;
     private boolean mDismissing;
+    private CountDownTimer mCountdownTimer = null;
 
     // To avoid accidental lockout due to events while the device in in the pocket, ignore
     // any passwords with length less than or equal to this length.
@@ -215,11 +216,13 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout
     protected void handleAttemptLockout(long elapsedRealtimeDeadline) {
         setPasswordEntryEnabled(false);
         long elapsedRealtime = SystemClock.elapsedRealtime();
-        new CountDownTimer(elapsedRealtimeDeadline - elapsedRealtime, 1000) {
+        long secondsInFuture = (long) Math.ceil(
+                (elapsedRealtimeDeadline - elapsedRealtime) / 1000.0);
+        mCountdownTimer = new CountDownTimer(secondsInFuture * 1000, 1000) {
 
             @Override
             public void onTick(long millisUntilFinished) {
-                int secondsRemaining = (int) (millisUntilFinished / 1000);
+                int secondsRemaining = (int) Math.round(millisUntilFinished / 1000.0);
                 mSecurityMessageDisplay.formatMessage(
                         R.string.kg_too_many_failed_attempts_countdown, secondsRemaining);
             }
@@ -252,6 +255,10 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout
 
     @Override
     public void onPause() {
+        if (mCountdownTimer != null) {
+            mCountdownTimer.cancel();
+            mCountdownTimer = null;
+        }
         if (mPendingLockCheck != null) {
             mPendingLockCheck.cancel(false);
             mPendingLockCheck = null;
diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardPatternView.java b/packages/Keyguard/src/com/android/keyguard/KeyguardPatternView.java
index 330632b701f1..c2b57ffa6113 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardPatternView.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardPatternView.java
@@ -325,12 +325,13 @@ public class KeyguardPatternView extends LinearLayout implements KeyguardSecurit
         mLockPatternView.clearPattern();
         mLockPatternView.setEnabled(false);
         final long elapsedRealtime = SystemClock.elapsedRealtime();
-
-        mCountdownTimer = new CountDownTimer(elapsedRealtimeDeadline - elapsedRealtime, 1000) {
+        final long secondsInFuture = (long) Math.ceil(
+                (elapsedRealtimeDeadline - elapsedRealtime) / 1000.0);
+        mCountdownTimer = new CountDownTimer(secondsInFuture * 1000, 1000) {
 
             @Override
             public void onTick(long millisUntilFinished) {
-                final int secondsRemaining = (int) (millisUntilFinished / 1000);
+                final int secondsRemaining = (int) Math.round(millisUntilFinished / 1000.0);
                 mSecurityMessageDisplay.formatMessage(
                         R.string.kg_too_many_failed_attempts_countdown, secondsRemaining);
             }