Android自定义指示器时间轴

指示器时间轴在外卖、购物类的APP里会经常用到，效果大概就像下面这样，看了网上很多文章，大都是自己绘制，太麻烦，其实通过ListView就可以实现。

 

在Activity关联的布局文件activity_main.xml中放置一个ListView，代码如下。由于这个列表只是用于展示信息，并不需要用户去点击，所以将其clickable属性置为false；为了消除ListView点击产生的波纹效果，我们设置其listSelector属性的值为透明；我们不需要列表项之间的分割线，所以设置其divider属性的值为null。

activity_main

    <ListView
        android:id="@+id/lvTrace"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:divider="@null"
        android:dividerHeight="0dp"
        android:listSelector="@android:color/transparent" />

每个列表项的布局stepview_adapter.xml，代码如下。由于时间轴的点和线都位于item布局中，为了使线是连续的，所以设置上面ListView的dividerHeight属性值为0dp，即垂直方向每个列表项都是紧挨着的。在item的布局中，我们先使用LinearLayout将布局分成左右两个部分，左边就是时间轴的布局，右边是内容的布局。

内容的布局，物流信息是一个RelativeLayout，为了不使两个列表项的文本靠得太近，在RelativeLayout中设置其paddingBottom和paddingTop属性。

时间轴的布局，时间轴的布局也是一个RelativeLayout，为了使时间轴的圆点和显示时间的文本对齐，我们需要在圆点之上再放置一条竖线，所以整体的布局就是 线 - 点 - 线。为了让线可以正好对准圆点的中心，我们让线和点都水平居中，即android:layout_centerHorizontal="true"

stepview_adapter

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="horizontal">

    <RelativeLayout
        android:id="@+id/rlTimeline"
        android:layout_width="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/tvTopLine"
            android:layout_width="1.2dp"
            android:layout_height="12dp"
            android:layout_centerHorizontal="true"
            android:background="#999" />

        <TextView
            android:id="@+id/tvDot"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/tvTopLine"
            android:layout_centerHorizontal="true"
            android:background="@drawable/state_get_huankuan" />

        <TextView
            android:layout_width="1.2dp"
            android:id="@+id/tvLine"
            android:layout_height="match_parent"
            android:layout_below="@id/tvDot"
            android:layout_centerHorizontal="true"
            android:background="#999" />
    </RelativeLayout>

    <RelativeLayout
        android:id="@+id/rlCenter"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="6dp"
        android:paddingRight="10dp"
        android:layout_marginLeft="20dp"
        android:paddingTop="12dp">

        <TextView
            android:id="@+id/step_tv_time"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_marginRight="6dp"
            android:text="10-20 22:22"
            android:textColor="#cccccc"
            android:textSize="12sp" />

        <TextView
            android:id="@+id/step_tv_des"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_marginRight="15dp"
            android:textStyle="bold"
            android:layout_toLeftOf="@+id/step_tv_time"
            android:text="fffffff" />

        <TextView
            android:id="@+id/step_tv_des_below"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_below="@+id/step_tv_des"
            android:layout_marginTop="5dp"
            android:text=""
            android:textColor="#999999" />
    </RelativeLayout>
</LinearLayout>

定义一个Adapter，代码如下。由于第一行的物流信息的显示形式和其他的不一样，所以要注意第一行的item的时间轴布局中最上面的线不显示

public class StepViewAdapter extends BaseAdapter {
    private Context context;
    private List<StepViewBean> traceList = new ArrayList<>();
    private static final int TYPE_FINISH = 101;
    private static final int TYPE_UNFINISH = 102;
    private static final int TYPE_ERROR = 103;

    public StepViewAdapter(Context context, List<StepViewBean> traceList) {
        this.context = context;
        this.traceList = traceList;
    }

    @Override
    public int getCount() {
        return traceList.size();
    }

    @Override
    public StepViewBean getItem(int position) {
        return traceList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        final StepViewBean trace = getItem(position);
        if (convertView != null) {
            holder = (ViewHolder) convertView.getTag();
        } else {
            holder = new ViewHolder();
            convertView = LayoutInflater.from(context).inflate(R.layout.stepview_adapter, parent, false);
            holder.tvTopLine = (TextView) convertView.findViewById(R.id.tvTopLine);
            holder.tvDot = (TextView) convertView.findViewById(R.id.tvDot);
            holder.tvLine = (TextView) convertView.findViewById(R.id.tvLine);
            holder.tvAcceptStation = (TextView) convertView.findViewById(R.id.step_tv_des);
            holder.tvAcceptTime = (TextView) convertView.findViewById(R.id.step_tv_time);
            holder.tvAcceptStationBelow = (TextView) convertView.findViewById(R.id.step_tv_des_below);
            holder.rlTimeline = (RelativeLayout) convertView.findViewById(rlTimeline);

            convertView.setTag(holder);
        }
        if (position == 0) {
            holder.tvTopLine.setVisibility(View.INVISIBLE);
        }
        if (position == traceList.size() - 1) {
            holder.tvLine.setVisibility(View.GONE);
        } else {
            holder.tvLine.setVisibility(View.VISIBLE);
        }
        switch (getItemViewType(position)) {
            case TYPE_FINISH:
                holder.tvAcceptStation.setTextColor(context.getResources().getColor(R.color.crt_completed));
                holder.tvDot.setBackgroundResource(R.drawable.state_get_huankuan);
                holder.tvLine.setBackgroundColor(context.getResources().getColor(R.color.crt_completed));
                holder.tvTopLine.setBackgroundColor(context.getResources().getColor(R.color.crt_completed));
                break;
            case TYPE_UNFINISH:
                holder.tvAcceptStation.setTextColor(context.getResources().getColor(R.color.crt_uncompleted_text));
                holder.tvDot.setBackgroundResource(R.drawable.state_normal_huankuan);
                holder.tvLine.setBackgroundColor(context.getResources().getColor(R.color.crt_text_hint_color));
                break;
            case TYPE_ERROR:
                holder.tvTopLine.setVisibility(View.VISIBLE);
                holder.tvAcceptStation.setTextColor(context.getResources().getColor(R.color.crt_error_text));
                holder.tvDot.setBackgroundResource(R.drawable.state_lose_huankuan);
                break;
        }

        holder.tvAcceptTime.setText(trace.getAcceptTime());
        holder.tvAcceptStation.setText(trace.getAcceptStation());
        if (!TextUtils.isEmpty(trace.getAcceptStation())) {
            holder.tvAcceptStationBelow.setText(trace.getAcceptStationBelow());
        }
        return convertView;
    }

    @Override
    public int getItemViewType(int id) {
          if(id==(traceList.size()-2)){
              return TYPE_ERROR;
          }
          if(id==(traceList.size()-1)){
              return TYPE_UNFINISH;
          }
          return TYPE_FINISH;
    }


    static class ViewHolder {
        public TextView tvAcceptTime, tvAcceptStation, tvLine, tvAcceptStationBelow;
        public TextView tvTopLine, tvDot;
        public RelativeLayout rlTimeline;

    }
}

 

为了可以看到布局的效果，在Activity中模拟一些假数据。需要定义一个实体类Trace，它有两个属性，acceptTime和acceptStation，代码如下：

StepViewBean

public class StepViewBean {
    /** 时间 */
    private String acceptTime;
    /** 描述 */
    private String acceptStation;
    /** 描述下方*/
    private String acceptStationBelow;

    public String getAcceptStationBelow() {
        return acceptStationBelow;
    }

    public void setAcceptStationBelow(String acceptStationBelow) {
        this.acceptStationBelow = acceptStationBelow;
    }



    public StepViewBean() {
    }

    public StepViewBean(String acceptTime, String acceptStation) {
        this.acceptTime = acceptTime;
        this.acceptStation = acceptStation;
    }

    public StepViewBean(String acceptTime, String acceptStation, String acceptStationBelow) {
        this.acceptTime = acceptTime;
        this.acceptStation = acceptStation;
        this.acceptStationBelow = acceptStationBelow;

    }

    public String getAcceptTime() {
        return acceptTime;
    }

    public void setAcceptTime(String acceptTime) {
        this.acceptTime = acceptTime;
    }

    public String getAcceptStation() {
        return acceptStation;
    }

    public void setAcceptStation(String acceptStation) {
        this.acceptStation = acceptStation;
    }
}

　　

MainActivity

public class MainActivity extends AppCompatActivity {
    private List<StepViewBean> traceList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView lvTrace= (ListView) findViewById(R.id.lvTrace);
        traceList.add(new StepViewBean("10-20 22: 22", "您的订单已打印完毕", "招商银行（9979） 小明
支付金额   100000"));
        traceList.add(new StepViewBean("10-20 22:22", "您已提交定单，等待系统确认"));
        traceList.add(new StepViewBean("10-20 22:24", "您的订单已拣货完成"));
        traceList.add(new StepViewBean("10-20 22:24", "扫描员已经扫描"));
        traceList.add(new StepViewBean("10-20 22:24", "您的订单已拣货完成"));
        traceList.add(new StepViewBean("10-20 22:24", "感谢你在京东购物，欢迎你下次光临！"));
        StepViewAdapter adapter = new StepViewAdapter(this, traceList);
        lvTrace.setAdapter(adapter);
    }
}

　　 

GitHub地址：https://github.com/peiniwan/StepView