Android Open Source - campus Zoom View Pager

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*******************************************************************************
 * Copyright 2013 Tomasz Zawada/*from  ww w .  j av a2  s .  c om*/
 * 
 * Based on the excellent PhotoView by Chris Banes:
 * https://github.com/chrisbanes/PhotoView
 *
 * 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 lecho.app.campus.view;

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.MotionEvent;

/**
 * Hacky fix for Issue #4 and
 * http://code.google.com/p/android/issues/detail?id=18990
 * 
 * ScaleGestureDetector seems to mess up the touch events, which means that
 * ViewGroups which make use of onInterceptTouchEvent throw a lot of
 * IllegalArgumentException: pointerIndex out of range.
 * 
 * Also the android.support.v4.view.MotionEventCompatEclair.getX() throws some
 * java.lang.ArrayIndexOutOfBoundsException exceptions which seems like a bug.
 */
public class ZoomViewPager extends ViewPager {

    public ZoomViewPager(Context context) {
        super(context);
    }

    public ZoomViewPager(final Context context, final AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {
        try {
            return super.onInterceptTouchEvent(event);
        } catch (Exception e) {
            return false;
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        try {
            return super.onTouchEvent(event);
        } catch (Exception e) {
            return false;
        }
    }
}

Java Source Code List