Fix NPE due to the lack of null-check

The case that was not coverted well is that
CursorAnchorInfoCompatWrapper could be instantiated
with null object. In such situations, we should
do nothing.

BUG: 17682582
Change-Id: I6625a2f0ed8c5580ed9edfe4728f342da77a8e40

2 files changed, 4 insertions, 4 deletions

diff --git a/java/src/com/android/inputmethod/compat/CursorAnchorInfoCompatWrapper.java b/java/src/com/android/inputmethod/compat/CursorAnchorInfoCompatWrapper.java
index c937eeeaa..5af31795c 100644
--- a/java/src/com/android/inputmethod/compat/CursorAnchorInfoCompatWrapper.java
+++ b/java/src/com/android/inputmethod/compat/CursorAnchorInfoCompatWrapper.java
@@ -84,8 +84,8 @@ public final class CursorAnchorInfoCompatWrapper {
     }
 
     @UsedForTesting
-    public static boolean isAvailable() {
-        return sCursorAnchorInfoClass.exists();
+    public boolean isAvailable() {
+        return sCursorAnchorInfoClass.exists() && mInstance != null;
     }
 
     private Object mInstance;
@@ -96,7 +96,7 @@ public final class CursorAnchorInfoCompatWrapper {
 
     @UsedForTesting
     public static CursorAnchorInfoCompatWrapper fromObject(final Object instance) {
-        if (!isAvailable()) {
+        if (!sCursorAnchorInfoClass.exists()) {
             return new CursorAnchorInfoCompatWrapper(null);
         }
         return new CursorAnchorInfoCompatWrapper(instance);
diff --git a/java/src/com/android/inputmethod/keyboard/TextDecorator.java b/java/src/com/android/inputmethod/keyboard/TextDecorator.java
index 6e4e3281e..c22717f95 100644
--- a/java/src/com/android/inputmethod/keyboard/TextDecorator.java
+++ b/java/src/com/android/inputmethod/keyboard/TextDecorator.java
@@ -182,7 +182,7 @@ public class TextDecorator {
     private void layoutMain() {
         final CursorAnchorInfoCompatWrapper info = mCursorAnchorInfoWrapper;
 
-        if (info == null) {
+        if (info == null || !info.isAvailable()) {
             cancelLayoutInternalExpectedly("CursorAnchorInfo isn't available.");
             return;
         }