Add workaround to prevent ViewPager from crashing
Bug: 11721001
Change-Id: I0824f82c30a288a3c1f0ea69e07f10bdeb744bbc
diff --git a/java/res/layout/emoji_palettes_view.xml b/java/res/layout/emoji_palettes_view.xml
index 2ce8932..b252859 100644
--- a/java/res/layout/emoji_palettes_view.xml
+++ b/java/res/layout/emoji_palettes_view.xml
@@ -73,7 +73,7 @@
android:background="@color/emoji_key_background_color"
android:src="@drawable/sym_keyboard_delete_holo_dark" />
</LinearLayout>
- <android.support.v4.view.ViewPager
+ <com.android.inputmethod.keyboard.internal.CustomViewPager
android:id="@+id/emoji_keyboard_pager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
diff --git a/java/src/com/android/inputmethod/keyboard/internal/CustomViewPager.java b/java/src/com/android/inputmethod/keyboard/internal/CustomViewPager.java
new file mode 100644
index 0000000..f5cc45c
--- /dev/null
+++ b/java/src/com/android/inputmethod/keyboard/internal/CustomViewPager.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.inputmethod.keyboard.internal;
+
+import android.content.Context;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.MotionEvent;
+
+/**
+ * Custom view pager to prevent {@link ViewPager} from crashing while handling multi-touch
+ * event.
+ */
+public class CustomViewPager extends ViewPager {
+ private static final String TAG = CustomViewPager.class.getSimpleName();
+
+ public CustomViewPager(final Context context, final AttributeSet attrs) {
+ super(context, attrs);
+ }
+
+ @Override
+ public boolean onInterceptTouchEvent(final MotionEvent event) {
+ // This only happens when you multi-touch, take the first finger off and move.
+ // Unfortunately this causes {@link ViewPager} to crash, so we will ignore such events.
+ if (event.getAction() == MotionEvent.ACTION_MOVE && event.getPointerId(0) != 0) {
+ Log.w(TAG, "Ignored multi-touch move event to prevent ViewPager from crashing");
+ return false;
+ }
+
+ return super.onInterceptTouchEvent(event);
+ }
+}