Do not create a handler thread for each session

Bug: 13710224
Bug: 12821388
Bug: 12667742
Change-Id: I6188e0240193d2bca789110e7660a0f31bbafc62

2 files changed, 9 insertions, 7 deletions

diff --git a/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java b/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java
index e2cdbb39c..10b4cada3 100644
--- a/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java
+++ b/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java
@@ -130,8 +130,11 @@ public final class InputLogic {
         // so we try using some heuristics to find out about these and fix them.
         mConnection.tryFixLyingCursorPosition();
         cancelDoubleSpacePeriodCountdown();
-        mInputLogicHandler.destroy();
-        mInputLogicHandler = new InputLogicHandler(mLatinIME, this);
+        if (InputLogicHandler.NULL_HANDLER == mInputLogicHandler) {
+            mInputLogicHandler = new InputLogicHandler(mLatinIME, this);
+        } else {
+            mInputLogicHandler.reset();
+        }
     }
 
     /**
@@ -142,8 +145,7 @@ public final class InputLogic {
             mConnection.finishComposingText();
         }
         resetComposingState(true /* alsoResetLastComposedWord */);
-        mInputLogicHandler.destroy();
-        mInputLogicHandler = InputLogicHandler.NULL_HANDLER;
+        mInputLogicHandler.reset();
     }
 
     /**
diff --git a/java/src/com/android/inputmethod/latin/inputlogic/InputLogicHandler.java b/java/src/com/android/inputmethod/latin/inputlogic/InputLogicHandler.java
index db96de305..42f0d7c00 100644
--- a/java/src/com/android/inputmethod/latin/inputlogic/InputLogicHandler.java
+++ b/java/src/com/android/inputmethod/latin/inputlogic/InputLogicHandler.java
@@ -43,7 +43,7 @@ class InputLogicHandler implements Handler.Callback {
     // is initialized, though probably only the monkey can actually do this.
     public static final InputLogicHandler NULL_HANDLER = new InputLogicHandler() {
         @Override
-        public void destroy() {}
+        public void reset() {}
         @Override
         public boolean handleMessage(final Message msg) { return true; }
         @Override
@@ -75,8 +75,8 @@ class InputLogicHandler implements Handler.Callback {
         mInputLogic = inputLogic;
     }
 
-    public void destroy() {
-        mNonUIThreadHandler.getLooper().quit();
+    public void reset() {
+        mNonUIThreadHandler.removeCallbacksAndMessages(null);
     }
 
     /**