流式布局 ChipsLayoutManager

ChipsLayoutManager
ChipsLayoutManager github地址

android:layoutDirection=“ltr” 从左到右

public static void initFlowLayout(Context context, RecyclerView recyclerView, ChipsAdapter adapter){        adapter.setOnRemoveListener(new MyRemoveListener(adapter));        ChipsLayoutManager chipsLayoutManager = ChipsLayoutManager.newBuilder(context)                //set vertical gravity for all items in a row. Default = Gravity.CENTER_VERTICAL                .setChildGravity(Gravity.TOP)                //whether RecyclerView can scroll. TRUE by default                .setScrollingEnabled(true)                //set maximum views count in a particular row//                .setMaxViewsInRow(2)                //set gravity resolver where you can determine gravity for item in position.                //This method have priority over previous one                .setGravityResolver(new IChildGravityResolver() {                    @Override                    public int getItemGravity(int position) {                        return Gravity.CENTER;                    }                })                //a layoutOrientation of layout manager, could be VERTICAL OR HORIZONTAL. HORIZONTAL by default                .setOrientation(ChipsLayoutManager.HORIZONTAL)                // row strategy for views in completed row, could be STRATEGY_DEFAULT, STRATEGY_FILL_VIEW,                //STRATEGY_FILL_SPACE or STRATEGY_CENTER                .setRowStrategy(ChipsLayoutManager.STRATEGY_DEFAULT)                // whether strategy is applied to last row. FALSE by default                .withLastRow(true)                .build();        recyclerView.setLayoutManager(chipsLayoutManager);        recyclerView.setAdapter(adapter);    }    private static class MyRemoveListener implements OnRemoveListener {        private ChipsAdapter adapter;        public MyRemoveListener(ChipsAdapter adapter){            this.adapter = adapter;        }        @Override        public void onItemRemoved(int position) {            adapter.getChipsEntitys().remove(position);            adapter.notifyItemRemoved(position);        }    }

ChipsLayoutManager.STRATEGY_DEFAULT，默认左对齐或右对齐
ChipsLayoutManager.STRATEGY_FILL_SPACE， item左右两边分布，中间空格

setGravityResolver(new IChildGravityResolver() ) 可能报错，看实际选择
java.lang.IllegalArgumentException: bottom point of input rect can’t be bigger than maxTop

.setRowBreaker(new IRowBreaker() { @Override      public boolean isItemBreakRow(@IntRange(from = 0) int position) {          return position == 6 || position == 11 || position == 2;      }  })

//对应position的item，如果右边可再放置一个item，可放置的item必须放下一行，对应position不受影响，不用单独放上一行。

import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ImageButton;import android.widget.TextView;import com.lianyucn.szfjzxy.R;import com.lianyucn.szfjzxy.bean.ChipsEntity;import com.lianyucn.szfjzxy.tool.listener.OnRemoveListener;import java.util.List;public class ChipsAdapter extends  RecyclerView.Adapter {    private List chipsEntities;    private OnRemoveListener onRemoveListener;    public ChipsAdapter(List chipsEntities) {        this.chipsEntities = chipsEntities;    }    public ChipsAdapter(List chipsEntities, OnRemoveListener onRemoveListener) {        this.chipsEntities = chipsEntities;        this.onRemoveListener = onRemoveListener;    }    public ChipsAdapter(List chipsEntities, OnRemoveListener onRemoveListener, boolean isShowingPosition) {        this.chipsEntities = chipsEntities;        this.onRemoveListener = onRemoveListener;    }    public void setOnRemoveListener(OnRemoveListener onRemoveListener){        this.onRemoveListener = onRemoveListener;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_chip, parent, false);        return new ViewHolder(itemView);    }    @Override    public void onBindViewHolder(ViewHolder holder, int position) {        holder.bindItem(chipsEntities.get(position));    }    @Override    public int getItemCount() {        return chipsEntities.size();    }    public List getChipsEntitys(){        return chipsEntities;    }    class ViewHolder extends RecyclerView.ViewHolder {        private TextView tvName;        private ImageButton ibClose;        ViewHolder(View itemView) {            super(itemView);            tvName = (TextView) itemView.findViewById(R.id.tvName);            ibClose = (ImageButton) itemView.findViewById(R.id.ibClose);        }        void bindItem(ChipsEntity entity) {            itemView.setTag(entity.getName());            tvName.setText(entity.getName());            ibClose.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    if (onRemoveListener != null && getAdapterPosition() != -1) {                        onRemoveListener.onItemRemoved(getAdapterPosition());                    }                }            });        }    }}

自定义布局

<?xml version="1.0" encoding="utf-8"?>

布局：

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