48 lines
1.7 KiB
Java
48 lines
1.7 KiB
Java
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.keyboard.internal;
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import android.content.Context;
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import android.support.v4.view.ViewPager;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.MotionEvent;
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/**
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* Custom view pager to prevent {@link ViewPager} from crashing while handling multi-touch
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* event.
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*/
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public class CustomViewPager extends ViewPager {
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private static final String TAG = CustomViewPager.class.getSimpleName();
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public CustomViewPager(final Context context, final AttributeSet attrs) {
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super(context, attrs);
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}
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@Override
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public boolean onInterceptTouchEvent(final MotionEvent event) {
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// This only happens when you multi-touch, take the first finger off and move.
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// Unfortunately this causes {@link ViewPager} to crash, so we will ignore such events.
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if (event.getAction() == MotionEvent.ACTION_MOVE && event.getPointerId(0) != 0) {
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Log.w(TAG, "Ignored multi-touch move event to prevent ViewPager from crashing");
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return false;
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}
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return super.onInterceptTouchEvent(event);
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}
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}
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