am 70bded0a: Merge "Fix 5636798: clear PIN/PUK fields when device sleeps or user cancels" into ics-mr1

* commit '70bded0ab8390cb53342f1fb1f1ff9ee56f60e5f':
  Fix 5636798: clear PIN/PUK fields when device sleeps or user cancels

policy/src/com/android/internal/policy/impl/LockPatternKeyguardView.java

@@ -558,9 +558,12 @@ public class LockPatternKeyguardView extends KeyguardViewBase implements Handler
         mScreenOn = false;
         mForgotPattern = false;
         mHasOverlay = mUpdateMonitor.getPhoneState() != TelephonyManager.CALL_STATE_IDLE;
-        if (mMode == Mode.LockScreen) {
+
+        // Emulate activity life-cycle for both lock and unlock screen.
+        if (mLockScreen != null) {
             ((KeyguardScreen) mLockScreen).onPause();
-        } else {
+        }
+        if (mUnlockScreen != null) {
             ((KeyguardScreen) mUnlockScreen).onPause();
         }
 
@@ -651,9 +654,11 @@ public class LockPatternKeyguardView extends KeyguardViewBase implements Handler
 
     @Override
     public void show() {
-        if (mMode == Mode.LockScreen) {
+        // Emulate activity life-cycle for both lock and unlock screen.
+        if (mLockScreen != null) {
             ((KeyguardScreen) mLockScreen).onResume();
-        } else {
+        }
+        if (mUnlockScreen != null) {
             ((KeyguardScreen) mUnlockScreen).onResume();
         }
 

policy/src/com/android/internal/policy/impl/SimPukUnlockScreen.java

@@ -383,6 +383,9 @@ public class SimPukUnlockScreen extends LinearLayout implements KeyguardScreen,
 
         public void onClick(View v) {
             if (v == mCancelButton) {
+                // clear the PIN/PUK entry fields if the user cancels
+                mPinText.setText("");
+                mPukText.setText("");
                 mCallback.goToLockScreen();
                 return;
             }

policy/src/com/android/internal/policy/impl/SimUnlockScreen.java

@@ -359,6 +359,7 @@ public class SimUnlockScreen extends LinearLayout implements KeyguardScreen, Vie
 
         public void onClick(View v) {
             if (v == mCancelButton) {
+                mPinText.setText(""); // clear the PIN entry field if the user cancels
                 mCallback.goToLockScreen();
                 return;
             }