ContentScrollView.java

/*
 *
 *  * sufly0001@gmail.com Modify the code to enhance the ease of use.
 *  *
 *  * Copyright (C) 2015 Ted xiong-wei@hotmail.com
 *  * 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.hpw.myapp.widget.scrolllayout.content;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewParent;
import android.widget.ScrollView;

import com.hpw.myapp.widget.scrolllayout.ScrollLayout;

public class ContentScrollView extends ScrollView {

    public interface OnScrollChangedListener {
        void onScrollChanged(int l, int t, int oldl, int oldt);
    }

    private OnScrollChangedListener listener;

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

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

    public ContentScrollView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public void setOnScrollChangeListener(OnScrollChangedListener listener) {
        this.listener = listener;
    }

    @Override
    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
        super.onScrollChanged(l, t, oldl, oldt);
        listener.onScrollChanged(l, t, oldl, oldt);
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        ViewParent parent = this.getParent();
        while (parent != null) {
            if (parent instanceof ScrollLayout) {
                ((ScrollLayout) parent).setAssociatedScrollView(this);
                break;
            }
            parent = parent.getParent();
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        ViewParent parent = this.getParent();
        if (parent instanceof ScrollLayout) {
            if (((ScrollLayout) parent).getCurrentStatus() == ScrollLayout.Status.OPENED)
                return false;
        }
        return super.onTouchEvent(ev);
    }
}