自定义ViewPager 解决PullToRefresh 添加Head不显示

package com.bawei.demo.view;


import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;


/**
 * 自定义ViewPager 解决PullToRefresh 添加Head不显示
 *
 * @author zhaoliang
 * @version 1.0
 * @create 2018/6/23
 */
public class BannerViewPager extends ViewPager {


    public BannerViewPager(@NonNull Context context) {
        super(context);
    }


    public BannerViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }


    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(600, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
}