package com.haoren.timeline;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;/** * Created by Hh on 2017/3/8. */public class TimeLineAdapter extends RecyclerView.Adapter<TimeLineAdapter.HorizontalVh> {  private Context context;  //時間節(jié)點數(shù)  private int nodeNum = 0;  //當前到達節(jié)點  private int currentNode = 1;  public TimeLineAdapter(Context context, int nodeNum) {    this.context = context;    this.nodeNum = nodeNum;  }  @Override  public HorizontalVh onCreateViewHolder(ViewGroup parent, int viewType) {    View view = LayoutInflater.from(context).inflate(R.layout.time_line, null, false);    HorizontalVh vh = new HorizontalVh(view);    return vh;  }  @Override  public void onBindViewHolder(HorizontalVh holder, int position) {    if (position < currentNode) {      //當前節(jié)點之前的全部設為已經(jīng)經(jīng)過      holder.point.setImageResource(R.mipmap.point_select);      holder.lineLeft.setBackgroundResource(R.color.colorPrimary);      holder.lineRight.setBackgroundResource(R.color.colorPrimary);    }    // 去掉左右兩頭的分支    if (position == 0) {      holder.lineLeft.setVisibility(View.INVISIBLE);    }    if (position == nodeNum - 1) {      holder.lineRight.setVisibility(View.INVISIBLE);    }  }  @Override  public int getItemCount() {    return nodeNum;  }  /**   * 設置當前節(jié)點   * @param currentNode   */  public void setCurrentNode(int currentNode) {    this.currentNode = currentNode;    this.notifyDataSetChanged();  }  class HorizontalVh extends RecyclerView.ViewHolder {    private ImageView point;    private View lineLeft, lineRight;    public HorizontalVh(View itemView) {      super(itemView);      this.point = (ImageView) itemView.findViewById(R.id.point);      this.lineLeft = itemView.findViewById(R.id.line_left);      this.lineRight = itemView.findViewById(R.id.line_right);    }  }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="0dp"  android:layout_weight="1"  android:layout_height="50dp"  android:gravity="center_horizontal"  android:orientation="vertical">  <RelativeLayout    android:layout_marginTop="20dp"    android:layout_width="40dp"    android:layout_height="wrap_content">    <View      android:id="@+id/line_left"      android:layout_width="20dp"      android:layout_height="1dp"      android:layout_centerVertical="true"      android:background="#A6A6A6" />    <View      android:id="@+id/line_right"      android:layout_width="20dp"      android:layout_height="1dp"      android:layout_centerVertical="true"      android:layout_toRightOf="@+id/line_left"      android:background="#A6A6A6" />    <ImageView      android:id="@+id/point"      android:layout_width="15dp"      android:layout_height="15dp"      android:layout_centerHorizontal="true"      android:scaleType="center"      android:src="@mipmap/point_normal" />  </RelativeLayout>  <TextView    android:id="@+id/show_time"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="node"    android:textSize="11sp" /></LinearLayout>

package com.haoren.timeline;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;public class MainActivity extends AppCompatActivity {  private RecyclerView mRecyclerView;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    mRecyclerView = (RecyclerView) findViewById(R.id.mRecyclerView);    initAdapter();  }  private void initAdapter() {    TimeLineAdapter adapter = new TimeLineAdapter(this, 8);    mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));    mRecyclerView.setAdapter(adapter);    adapter.setCurrentNode(5);  }}