解決 HorizontalScrollView 和 ViewPager 的滑動衝突

在上篇 仿qq5.0側滑實現後 我在這個佈局里加了一個空間 ViewPager 發現 ，主界面可以側滑，但viewPager不能手動滑動。

發現是側滑事件和viewPager的滑動事件有衝突：

解決辦法就是重寫ViewPager控件：

這個是側滑的控件

package com.itau.yamadv.community.view;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;

import com.itau.yamadv.R;
import com.nineoldandroids.view.ViewHelper;

public class SlidingMenu extends HorizontalScrollView
{
    private LinearLayout mWapper;
    private ViewGroup mMenu;
    private ViewGroup mContent;
    private int mScreenWidth;

    private int mMenuWidth;
    // dp
    private int mMenuRightPadding = 50;

    private boolean once;

    private boolean isOpen;

    public static boolean isMove = true ;

    /**
     * 未使用自定義屬性時，調用
     * 
     * @param context
     * @param attrs
     */
    public SlidingMenu(Context context, AttributeSet attrs)
    {
        this(context, attrs, 0);
    }

    /**
     * 當使用了自定義屬性時，會調用此構造方法
     * 
     * @param context
     * @param attrs
     * @param defStyle
     */
    public SlidingMenu(Context context, AttributeSet attrs, int defStyle)
    {
        super(context, attrs, defStyle);

        // 獲取我們定義的屬性
        TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
                R.styleable.SlidingMenu, defStyle, 0);

        int n = a.getIndexCount();
        for (int i = 0; i < n; i++)
        {
            int attr = a.getIndex(i);
            switch (attr)
            {
            case R.styleable.SlidingMenu_rightPadding:
                mMenuRightPadding = a.getDimensionPixelSize(attr,
                        (int) TypedValue.applyDimension(
                                TypedValue.COMPLEX_UNIT_DIP, 50, context
                                        .getResources().getDisplayMetrics()));
                break;
            }
        }
        a.recycle();

        WindowManager wm = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics outMetrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(outMetrics);
        mScreenWidth = outMetrics.widthPixels;

    }

    public SlidingMenu(Context context)
    {
        this(context, null);
    }

    /**
     * 設置子View的寬和高 設置自己的寬和高
     */
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        if (!once)
        {
            mWapper = (LinearLayout) getChildAt(0);
            mMenu = (ViewGroup) mWapper.getChildAt(0);
            mContent = (ViewGroup) mWapper.getChildAt(1);
            mMenuWidth = mMenu.getLayoutParams().width = mScreenWidth
                    - mMenuRightPadding;
            mContent.getLayoutParams().width = mScreenWidth;
            once = true;
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    /**
     * 通過設置偏移量，將menu隱藏
     */
    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b)
    {
        super.onLayout(changed, l, t, r, b);
        if (changed)
        {
            this.scrollTo(mMenuWidth, 0);
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev)
    {
        if(isMove){
            int action = ev.getAction();
            switch (action)
            {
            case MotionEvent.ACTION_UP:
                // 隱藏在左邊的寬度
                int scrollX = getScrollX();
                if (scrollX >= mMenuWidth / 2)
                {
                    this.smoothScrollTo(mMenuWidth, 0);
                    isOpen = false;
                } else
                {
                    this.smoothScrollTo(0, 0);
                    isOpen = true;
                }
                return true;
            }
            return super.onTouchEvent(ev);
        }

        else{
            return true;
        }
    }

    /**
     * 打開菜單
     */
    public void openMenu()
    {
        if (isOpen)
            return;
        this.smoothScrollTo(0, 0);
        isOpen = true;
    }

    public void closeMenu()
    {
        if (!isOpen)
            return;
        this.smoothScrollTo(mMenuWidth, 0);
        isOpen = false;
    }

    /**
     * 切換菜單
     */
    public void toggle()
    {
        if (isOpen)
        {
            closeMenu();
        } else
        {
            openMenu();
        }
    }

    /**
     * 滾動發生時
     */
    @Override
    protected void onScrollChanged(int l, int t, int oldl, int oldt)
    {
        super.onScrollChanged(l, t, oldl, oldt);
        float scale = l * 1.0f / mMenuWidth; // 1 ~ 0

        /**
         * 區別1：內容區域1.0~0.7 縮放的效果 scale : 1.0~0.0 0.7 + 0.3 * scale
         * 
         * 區別2：菜單的偏移量需要修改
         * 
         * 區別3：菜單的顯示時有縮放以及透明度變化 縮放：0.7 ~1.0 1.0 - scale * 0.3 透明度 0.6 ~ 1.0 
         * 0.6+ 0.4 * (1- scale) ;
         * 
         */
        float rightScale = 0.7f + 0.3f * scale;
        float leftScale = 1.0f - scale * 0.3f;
        float leftAlpha = 0.6f + 0.4f * (1 - scale);

        // 調用屬性動畫，設置TranslationX
        ViewHelper.setTranslationX(mMenu, mMenuWidth * scale * 0.8f);

        ViewHelper.setScaleX(mMenu, leftScale);
        ViewHelper.setScaleY(mMenu, leftScale);
        ViewHelper.setAlpha(mMenu, leftAlpha);
        // 設置content的縮放的中心點
        ViewHelper.setPivotX(mContent, 0);
        ViewHelper.setPivotY(mContent, mContent.getHeight() / 2);
        ViewHelper.setScaleX(mContent, rightScale);
        ViewHelper.setScaleY(mContent, rightScale);

    }

}

重寫的ViewPager:

package com.itau.yamadv.community.view;

import android.content.Context;
import android.graphics.PointF;
import android.hardware.Camera.Size;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;

public class MyViewpager extends ViewPager {

    MyViewpager viewpager;
    private int size = -1;

    public MyViewpager(Context context, AttributeSet attrs) {  
        super(context, attrs);  
        // TODO Auto-generated constructor stub  
    }  

    @Override  
    public boolean onInterceptTouchEvent(MotionEvent p_event)  
    {  
        return true;  
    }  

    private PointF sp = new PointF(); 
    @Override
    public boolean onTouchEvent(MotionEvent arg0) {
        // TODO Auto-generated method stub
        int action = arg0.getAction();
        switch (action){
        case MotionEvent.ACTION_DOWN:
            sp = new PointF(arg0.getX(), arg0.getY());
            break;
        case MotionEvent.ACTION_MOVE:
            PointF ep = new PointF(arg0.getX(), arg0.getY());
            float move_x = sp.x - ep.x;
            if(!(move_x < 0 && getCurrentItem() == 0) && getParent() != null
                    && !(move_x > 0 && getCurrentItem() == getAdapter().getCount() - 1) 
                    && sp.x > 50){
                Log.i("DEBUG", "intercept move event");  
                getParent().requestDisallowInterceptTouchEvent(true);
            }

        }

        return super.onTouchEvent(arg0);
    }

}

然後問題就解決了