Android(安卓)TimeLine 时间节点轴的实现

效果图

具体实现 (RecyclerView)

1.Adapter

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;    //时间节点数    private int nodeNum = 0;    //当前到达节点    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) {            //当前节点之前的全部设为已经经过            holder.point.setImageResource(R.mipmap.point_select);            holder.lineLeft.setBackgroundResource(R.color.colorPrimary);            holder.lineRight.setBackgroundResource(R.color.colorPrimary);        }        // 去掉左右两头的分支        if (position == 0) {            holder.lineLeft.setVisibility(View.INVISIBLE);        }        if (position == nodeNum - 1) {            holder.lineRight.setVisibility(View.INVISIBLE);        }    }    @Override    public int getItemCount() {        return nodeNum;    }    /**     * 设置当前节点     * @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);        }    }}

item.xml

<?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>

MainActivity

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);    }}

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