android/56985.html">指示器時間軸在外賣、購物類的APP里會經常用到,效果大概就像下面這樣,看了網上很多文章,大都是自己繪制,太麻煩,其實通過ListView就可以實現。
	
在Activity關聯的布局文件activity_main.xml中放置一個ListView,代碼如下。由于這個列表只是用于展示信息,并不需要用戶去點擊,所以將其clickable屬性置為false;為了消除ListView點擊產生的波紋效果,我們設置其listSelector屬性的值為透明;我們不需要列表項之間的分割線,所以設置其divider屬性的值為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" />
每個列表項的布局stepview_adapter.xml,代碼如下。由于時間軸的點和線都位于item布局中,為了使線是連續的,所以設置上面ListView的dividerHeight屬性值為0dp,即垂直方向每個列表項都是緊挨著的。在item的布局中,我們先使用LinearLayout將布局分成左右兩個部分,左邊就是時間軸的布局,右邊是內容的布局。
內容的布局,物流信息是一個RelativeLayout,為了不使兩個列表項的文本靠得太近,在RelativeLayout中設置其paddingBottom和paddingTop屬性。
時間軸的布局,時間軸的布局也是一個RelativeLayout,為了使時間軸的圓點和顯示時間的文本對齊,我們需要在圓點之上再放置一條豎線,所以整體的布局就是 線 - 點 - 線。為了讓線可以正好對準圓點的中心,我們讓線和點都水平居中,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>
定義一個Adapter,代碼如下。由于第一行的物流信息的顯示形式和其他的不一樣,所以要注意第一行的item的時間軸布局中最上面的線不顯示
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;  }}為了可以看到布局的效果,在Activity中模擬一些假數據。需要定義一個實體類Trace,它有兩個屬性,acceptTime和acceptStation,代碼如下:
StepViewBean
public class StepViewBean {  /** 時間 */  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", "您的訂單已打印完畢", "招商銀行(9979) 小明/n支付金額  100000"));    traceList.add(new StepViewBean("10-20 22:22", "您已提交定單,等待系統確認"));    traceList.add(new StepViewBean("10-20 22:24", "您的訂單已揀貨完成"));    traceList.add(new StepViewBean("10-20 22:24", "掃描員已經掃描"));    traceList.add(new StepViewBean("10-20 22:24", "您的訂單已揀貨完成"));    traceList.add(new StepViewBean("10-20 22:24", "感謝你在京東購物,歡迎你下次光臨!"));    StepViewAdapter adapter = new StepViewAdapter(this, traceList);    lvTrace.setAdapter(adapter);  }}GitHub地址:https://github.com/peiniwan/StepView
總結
以上所述是小編給大家介紹的Android自定義指示器時間軸效果實例代碼詳解,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回復大家的。在此也非常感謝大家對VEVB武林網網站的支持!
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