Android网格布局实现--recyclerview

接上一篇内容，使用RecyclerView实现；

<android.support.v7.widget.RecyclerView
    android:id="@+id/rvGrid"
    android:layout_width="match_parent"
    android:layout_height="0px"
    android:layout_marginRight="30px"
    android:layout_marginTop="20px"
    android:layout_weight="1"
    android:splitMotionEvents="false" />
java代码：
     mPhotoWallRecyclerView.setLayoutManager(mSGLM);
        mPhotoWallRecyclerView.setHasFixedSize(true);
        mPhotoWallRecyclerView.addOnScrollListener(mOnScrollListener);

        mPhotoWallAdapter = new PhotoWallAdapter2(mCtx, null);
        mPhotoWallAdapter.setAddrCardListener(mAddrCardListener);
        // Set the RecyclerView's Adapter
        mPhotoWallRecyclerView.setAdapter(mPhotoWallAdapter);

适配器代码
public class PhotoWallAdapter2 extends RecyclerView.Adapter<PhotoWallAdapter2.MyViewHolder> {

private ArrayList<CardAddrItem> mDataset;
private List<Integer> mHeights;
private AddrCardListener mListener;
private DisplayImageOptions options;

public PhotoWallAdapter2(Context context, ArrayList<CardAddrItem> myDataset) {
if (myDataset == null)
this.mDataset = new ArrayList<CardAddrItem>();
else
this.mDataset = myDataset;

options = new DisplayImageOptions.Builder()

.cacheInMemory(true)
.cacheOnDisk(true)
.considerExifParams(true)
.bitmapConfig(Bitmap.Config.RGB_565)
.build();
}

public void getRandomHeight() {
mHeights = new ArrayList<Integer>();
int min = 252;
for (int i = 0; i < mDataset.size(); i++) {
//随机的获取一个范围为200-600直接的高度
String name = mDataset.get(i).getName();
int w = (name.length() + 1) * 24 + 36;
int ww = Math.max(min, w);
mHeights.add(ww);
}
}

public void setAddrCardListener(AddrCardListener listener) {
mListener = listener;
}

private void setAdapterListener(MyViewHolder holder) {
if (mListener == null) return;
if (holder.tvTitle.getVisibility() == View.GONE) {
return;
}
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MyViewHolder holder = (MyViewHolder) v.getTag();
final int position = holder.getLayoutPosition();
notifyItemChanged(position);
mListener.onAddrItemClick(position);
}
});
holder.itemView.setTag(holder);

}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// Create a new view by inflating the row item xml.
final View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.photo_card_cell2, parent, false);

MyViewHolder holder = new MyViewHolder(v);
setAdapterListener(holder);

return holder;
}

public void addData(List<CardAddrItem> datalist) {
if ((datalist != null) && (datalist.size() > 0)) {
mDataset.clear();
notifyDataSetChanged();

mDataset.addAll(getItemCount(), datalist);

getRandomHeight();
notifyItemChanged(0);
notifyDataSetChanged();
}
}

public ArrayList<CardAddrItem> getData() {
return mDataset;
}

public CardAddrItem getItem(int position) {
return (mDataset != null && position >= 0 && position < mDataset.size()) ?
mDataset.get(position) : null;
}

@Override
public int getItemCount() {
return (mDataset == null) ? 0 : mDataset.size();
}

@Override
public void onBindViewHolder(final MyViewHolder holder, int position) {
CardAddrItem map = mDataset.get(position);
holder.tvTitle.setText(map.getName().trim());
holder.tvTitle.setVisibility(View.VISIBLE);
holder.tvAddress.setText(map.getAddress().trim());
holder.tvAddress.setVisibility(View.VISIBLE);

String url = map.getUrl();
holder.ivPhoto.setTag(holder.spinner);
holder.ivPhoto.setScaleType(ImageView.ScaleType.CENTER_CROP);
ImageLoader.getInstance().displayImage(url, holder.ivPhoto, options, new SimpleImageLoadingListener() {
@Override
public void onLoadingStarted(String imageUri, View view) {
holder.spinner.setVisibility(View.VISIBLE);
}

@Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
String message = null;
switch (failReason.getType()) {
case IO_ERROR:
message = "Input/Output error";
break;
case DECODING_ERROR:
message = "Image can't be decoded";
break;
case NETWORK_DENIED:
message = "Downloads are denied";
break;
case OUT_OF_MEMORY:
message = "Out Of Memory error";
break;
case UNKNOWN:
message = "Unknown error";
break;
}
Toast.makeText(view.getContext(), message, Toast.LENGTH_SHORT).show();

holder.spinner.setVisibility(View.GONE);
}

@Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
holder.spinner.setVisibility(View.GONE);
}
}, new ImageLoadingProgressListener() {
@Override
public void onProgressUpdate(String imageUri, View view, int current, int total) {
holder.spinner.setProgress(Math.round(100.0f * current / total));
}
});
}

/**
* Create a ViewHolder to represent your cell layout
* and data element structure
*/
public static class MyViewHolder extends RecyclerView.ViewHolder {
ImageView ivPhoto;
TextView tvTitle;
TextView tvAddress;
View llCardBack;
ProgressBar spinner;

public MyViewHolder(View itemView) {
super(itemView);

ivPhoto = (ImageView) itemView.findViewById(R.id.photo);
tvTitle = (TextView) itemView.findViewById(R.id.tvTitle);
tvAddress = (TextView) itemView.findViewById(R.id.tvAddress);
llCardBack = itemView.findViewById(R.id.llCardBack);
spinner = (ProgressBar) itemView.findViewById(R.id.loading);
}
}

public interface AddrCardListener {
void onAddrItemClick(int position);

void onAddrNaviClick(int position);

void onAddrCollClick(int position);
}