package com.mylhyl.circledialog.view;

import android.content.Context;
import android.view.View;

import androidx.annotation.NonNull;
import androidx.viewpager.widget.ViewPager;

/**
 * Created by hupei on 2019/1/16 10:42.
 */
class WrapViewPage extends ViewPager {

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

    @Override
    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;
        }
        if (height > 0) {
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}