怎么在RecylerView中使用StaggeredGridLayoutManager实现流布局
怎么在RecylerView中使用StaggeredGridLayoutManager实现流布局?相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
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具体内容如下
第一步:添加依赖
compile 'com.android.support:appcompat-v7:25.3.1' compile 'com.android.support:design:25.3.1' compile 'com.android.support:recyclerview-v7:25.3.1' compile 'com.android.support:cardview-v7:25.3.1' compile 'com.github.bumptech.glide:glide:3.7.0'
因为加载的是网络图片,所以采用的是Glide图片加载框架。
第二步:recylerview布局 (刷新需要添加SwipeRefreshLayout)
第三步:RecylerView初始化
recyclerView = (RecyclerView) findViewById(R.id.recylerview); recyclerView.setHasFixedSize(true); recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)); recyclerView.setAdapter(adapter = new DemoAdapter()); adapter.replaceAll(getData());
Demo中:
final StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL); mRecyclerView.setLayoutManager(layoutManager); mMeizhiListAdapter = new MeizhiListAdapter(getContext(), mMeizhiList); mRecyclerView.setAdapter(mMeizhiListAdapter); mRecyclerView.addOnScrollListener(getOnBottomListener(layoutManager));//滚动预先加载数据 mMeizhiListAdapter.setOnMeizhiTouchListener(getOnMeizhiTouchListener());//点击事件
这里主要是 recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)); 设置StaggeredGridLayoutManager布局管理器,参数分别是列数,方向。
第四步:适配器的实现
package com.hsy.utils.utilsdemo.adapter; import android.content.Context; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import com.hsy.utils.utilsdemo.R; import com.hsy.utils.utilsdemo.module.home.Daily; import com.hsy.utils.utilslibrary.utils.GlideUtils; import java.util.List; /** * Created by drakeet on 6/20/15. */ public class MeizhiListAdapter extends RecyclerView.Adapter{ public static final String TAG = "MeizhiListAdapter"; private List mList; private Context mContext; private OnMeizhiTouchListener mOnMeizhiTouchListener; public MeizhiListAdapter(Context context, List meizhiList) { mList = meizhiList; mContext = context; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int i) { View v = LayoutInflater.from(parent.getContext()) .inflate(R.layout.item_meizhi, parent, false); return new ViewHolder(v); } @Override public void onBindViewHolder(final ViewHolder viewHolder, final int position) { Daily meizhi = mList.get(position); int limit = 48; String text = ""; if (meizhi != null && meizhi.getTitle() != null) { text = meizhi.getTitle().length() > limit ? meizhi.getTitle().substring(0, limit) + "..." : meizhi.getTitle(); } viewHolder.meizhi = meizhi; viewHolder.titleView.setText(text); viewHolder.card.setTag(meizhi.getDesc()); //加载图片 GlideUtils.displayImage(mContext, meizhi.getImgUrl(), viewHolder.meizhiView); } @Override public void onViewRecycled(ViewHolder holder) { super.onViewRecycled(holder); } @Override public int getItemCount() { return mList != null ? mList.size() : 0; } public void setOnMeizhiTouchListener(OnMeizhiTouchListener onMeizhiTouchListener) { this.mOnMeizhiTouchListener = onMeizhiTouchListener; } class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { ImageView meizhiView; TextView titleView; View card; Daily meizhi; public ViewHolder(View itemView) { super(itemView); card = itemView; meizhiView = (ImageView) itemView.findViewById(R.id.meizhi); titleView = (TextView) itemView.findViewById(R.id.title); meizhiView.setOnClickListener(this); card.setOnClickListener(this); itemView.setOnClickListener(this); } @Override public void onClick(View v) { mOnMeizhiTouchListener.onTouch(v, meizhiView, card, meizhi); } } }
每个布局的样式item_layout
下面来说实现动态设置图片大小方式
ivImage.getContext()).getWindowManager().getDefaultDisplay().getWidth(); ViewGroup.LayoutParams params = ivImage.getLayoutParams(); //设置图片的相对于屏幕的宽高比 params.width = width/3; params.height = (int) (200 + Math.random() * 400) ; ivImage.setLayoutParams(params);
看完上述内容,你们掌握怎么在RecylerView中使用StaggeredGridLayoutManager实现流布局的方法了吗?如果还想学到更多技能或想了解更多相关内容,欢迎关注创新互联行业资讯频道,感谢各位的阅读!
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