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Android自定义指示器时间轴效果实例代码详解

2019-10-22 18:21:28
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android/56985.html">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。

android,自定义指示器,指示器,时间轴

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/275063.html">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><br><br><br>

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/n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

总结

以上所述是小编给大家介绍的Android自定义指示器时间轴效果实例代码详解,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对VEVB武林网网站的支持!


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