一个自适应内部内容的ViewPager写法，缺陷就是，过渡是闪烁的

MyViewPager.java

package com.chezanw.wz.widget;

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

import com.hangox.xlog.XLog;

/**
 * Created With Android Studio
 * User 4
 * Date 2014/12/19
 * Time 15:50
 */
public class MyViewPager extends ViewPager {
    public MyViewPager(Context context) {
        super(context);
    }

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

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
    }

    //    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        //下面遍历所有child的高度
        for (int i = 0; i < getChildCount(); i++) {
            View child = getChildAt(i);
            child.measure(widthMeasureSpec,
                    MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            XLog.i(child.getMeasuredHeight()+"");
        }
        ViewGroup.LayoutParams layoutParams = getLayoutParams();
        if (layoutParams.height == ViewGroup.LayoutParams.WRAP_CONTENT) {
            int cItemIndex = getCurrentItem();//选取当前显示的View作为现在的高度
            if (cItemIndex >= 0 || cItemIndex < getChildCount()) {
                View view = getChildAt(cItemIndex);
                if (view != null) {
                    int height = getChildAt(cItemIndex).getMeasuredHeight();
                    heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
                }
            }

        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }


//    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//        int height = 0;
//        //下面遍历所有child的高度
//        for (int i = 0; i < getChildCount(); i++) {
//            View child = getChildAt(i);
//            child.measure(widthMeasureSpec,
//                    MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
//            int h = child.getMeasuredHeight();
//            if (h > height) //采用最大的view的高度。~
//                height = h;
//        }
//        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height,
//                MeasureSpec.EXACTLY);
//        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
//    }

}