关于ViewPager高度自适应（随着pager页的高度改变Viewpager的高度）

该博客借鉴的是某位大神的博客 我只是写一下用后感和总结 博客链接地址 http://blog.csdn.net/qq_34972666/article/details/52386999?locationNum=11

首先当然是重写ViewPager啦 直接粘代码：

public class CustomViewpager extends ViewPager {
    private int current;
    private int height = 0;
    /**
     * 保存position与对于的View
     */
    private HashMap<Integer, View> mChildrenViews = new LinkedHashMap<Integer, View>();  

    private boolean scrollble = true;  

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

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

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (mChildrenViews.size() > current) {
            View child = mChildrenViews.get(current);
            child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            height = child.getMeasuredHeight();
        }  

        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);  

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }  

    public void resetHeight(int current) {
        this.current = current;
        if (mChildrenViews.size() > current) {  

            LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) getLayoutParams();
            if (layoutParams == null) {
                layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, height);
            } else {
                layoutParams.height = height;
            }
            setLayoutParams(layoutParams);
        }
    }
    /**
     * 保存position与对于的View
     */
    public void setObjectForPosition(View view, int position)
    {
        mChildrenViews.put(position, view);
    }  

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        if (!scrollble) {
            return true;
        }
        return super.onTouchEvent(ev);
    }  

    public boolean isScrollble() {
        return scrollble;
    }  

    public void setScrollble(boolean scrollble) {
        this.scrollble = scrollble;
    }  

} 

这里应该注意的是

resetHeight()的方法要根据自己实际项目的父布局来写LinearLayout还是RelativeLayout

setObjectForPosition（）方法中是为了调用存放你的view和他对应的position

然后就是我们的的Fragment的代码 我们创建的Fragment的时候需要在构造方法中传入我们自定义的ViewPager对象  然后在onCreateView的方法中调用

setObjectForPosition（） 下面吧Fragment的代码粘出来

public class NewPersonDataAssetPage extends BaseFragment {

    private CustomPersonViewPager vp;
    private Activity activity;

    public NewPersonDataAssetPage(Activity activity, CustomPersonViewPager vp) {
        this.activity = activity;
        this.vp = vp;
    }

    @Override
    protected View initView(LayoutInflater inflater, ViewGroup container) {
        View view = View.inflate(activity, R.layout.fragment_new_person_asset_page, null);
        vp.setObjectForPosition(view, 1);
        return view;
    }

    @Override
    protected void initData() {

    }

    @Override
    public void onClick(View v) {

    }
}

最后就是要在ViewPager滑动的监听里面去写

activityScdetailsBottomVp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {  

            }  

            @Override
            public void onPageSelected(int position) {
                activityScdetailsBottomVp.resetHeight(position);  

                if (position == 0) {  

                    activityScdetailsBottomLinear.setBackgroundResource(R.drawable.fishbone_diagram_list_btn_1);
                    activityScdetailsBottomTaskTv.setTextColor(Color.parseColor("#ffffff"));
                    activityScdetailsBottomInfoTv.setTextColor(Color.parseColor("#c1c1c1"));
                    activityScdetailsBottomTimeTv.setTextColor(Color.parseColor("#c1c1c1"));  

                } else if (position == 1) {
//                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {
//                        activityScdetailsBottomVp.resetHeight(2);
//                    } else {
//                        activityScdetailsBottomVp.resetHeight(1);
//                    }
                    activityScdetailsBottomLinear.setBackgroundResource(R.drawable.fishbone_diagram_list_btn_2);
                    activityScdetailsBottomTaskTv.setTextColor(Color.parseColor("#c1c1c1"));
                    activityScdetailsBottomInfoTv.setTextColor(Color.parseColor("#ffffff"));
                    activityScdetailsBottomTimeTv.setTextColor(Color.parseColor("#c1c1c1"));
                } else {  

                    activityScdetailsBottomLinear.setBackgroundResource(R.drawable.fishbone_diagram_list_btn_3);
                    activityScdetailsBottomTaskTv.setTextColor(Color.parseColor("#c1c1c1"));
                    activityScdetailsBottomInfoTv.setTextColor(Color.parseColor("#c1c1c1"));
                    activityScdetailsBottomTimeTv.setTextColor(Color.parseColor("#ffffff"));
                }
            }
            @Override
            public void onPageScrollStateChanged(int state) {  

            }
        });
        activityScdetailsBottomVp.resetHeight(0);