import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext())
            .inflate(mCardLayout, parent, false);
    ViewHolder holder = new ViewHolder(view);
    holder.imagePager.setRefreshLayout(mRefreshLayout);
    holder.imagePager.setAdapter(new ImageAdapter());
    holder.imageIndicator.setViewPager(holder.imagePager);
    holder.imagePager.getAdapter().registerDataSetObserver(holder.imageIndicator.getDataSetObserver());
    if (mHeaderCard) {
        holder.imagePager.enableSwipe(true);
        PercentRelativeLayout.LayoutParams footerParams = (PercentRelativeLayout.LayoutParams) holder.cardFooter.getLayoutParams();
        if (footerParams != null) {
            PercentLayoutHelper.PercentLayoutInfo info = footerParams.getPercentLayoutInfo();
            info.heightPercent = parent.getContext().getResources().getFraction(R.fraction.heightPercentPlaceFooterInHeader, 1, 1);
            holder.cardFooter.requestLayout();
        }
    }
    if (mNearbyCard) {
        holder.cardView.getLayoutParams().height = mNearbyCardHeight;
    }
    return holder;
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
@Override
public PercentLayoutHelper.PercentLayoutInfo getPercentLayoutInfo() {
    if (mPercentLayoutInfo == null) {
        mPercentLayoutInfo = new PercentLayoutHelper.PercentLayoutInfo();
    }

    return mPercentLayoutInfo;
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
PercentChangeListener(View view) {
    super(view);
    ViewGroup.LayoutParams params = view.getLayoutParams();
    if (params == null) {
        throw new IllegalStateException("View does not have layout params yet.");
    }
    try {
        if (!(params instanceof PercentLayoutHelper.PercentLayoutParams)) {
            throw new IllegalStateException("Animating percent parameters (aspectRatio is also a \"percent parameter\") is available only for children of PercentRelativeLayout or PercentFrameLayout (part of the Percent Support Library).");
        }
    } catch (NoClassDefFoundError error) {
        throw new IllegalStateException("Animating percent parameters (aspectRatio is also a \"percent parameter\") is available only for children of PercentRelativeLayout or PercentFrameLayout (part of the Percent Support Library).");
    }
    mPercentLayoutInfo = ((PercentLayoutHelper.PercentLayoutParams) params).getPercentLayoutInfo();
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
public PercentLinearLayout(Context context, AttributeSet attrs) {
	super(context, attrs);

	mPercentLayoutHelper = new PercentLayoutHelper(this);
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
public LayoutParams(Context c, AttributeSet attrs) {
	super(c, attrs);
	mPercentLayoutInfo = PercentLayoutHelper.getPercentLayoutInfo(c, attrs);
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
@Override
public PercentLayoutHelper.PercentLayoutInfo getPercentLayoutInfo() {
	return mPercentLayoutInfo;
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
@Override
protected void setBaseAttributes(TypedArray a, int widthAttr, int heightAttr) {
	PercentLayoutHelper.fetchWidthAndHeight(this, a, widthAttr, heightAttr);
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
public LayoutParams(Context c, AttributeSet attrs) {
    super(c, attrs);
    mPercentLayoutInfo = PercentLayoutHelper.getPercentLayoutInfo(c, attrs);
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
@Override
protected void setBaseAttributes(TypedArray a, int widthAttr, int heightAttr) {
    PercentLayoutHelper.fetchWidthAndHeight(this, a, widthAttr, heightAttr);
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
public PercentLinearLayout(Context context, AttributeSet attrs)
{
    super(context, attrs);

    mPercentLayoutHelper = new PercentLayoutHelper(this);
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
public LayoutParams(Context c, AttributeSet attrs)
{
    super(c, attrs);
    mPercentLayoutInfo = PercentLayoutHelper.getPercentLayoutInfo(c, attrs);
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
@Override
public PercentLayoutHelper.PercentLayoutInfo getPercentLayoutInfo()
{
    return mPercentLayoutInfo;
}
 

import android.support.percent.PercentLayoutHelper; //导入依赖的package包/类
@Override
protected void setBaseAttributes(TypedArray a, int widthAttr, int heightAttr)
{
    PercentLayoutHelper.fetchWidthAndHeight(this, a, widthAttr, heightAttr);
}