Android控件之使用ListView实现时间轴效果

 实现思路：

该view是通过listview实现的，通过实体两个字段内容content和时间time来展示每个listitem

时间轴是使用上面一条线（20dp）和中间一个圆（15dp）和下面一条线（40dp）组装成的

在listview中，设置其分割线为空，并且没有点击效果

效果图：

步骤一：使用xml画出一个灰色的圆点（time_cycle.xml）

<?xml version="1.0" encoding="utf-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
android:shape="oval"> 
<solid android:color="#cbcbcb" /> 
<size 
android:width="15dp" 
android:height="15dp" /> 
</shape> 

步骤二：javabean的编写

public class kuaidi { 
private string content; 
private string time; 
public kuaidi(string time, string content) { 
this.content = content; 
this.time = time; 
} 
public string getcontent() { 
return content; 
} 
public void setcontent(string content) { 
this.content = content; 
} 
public string gettime() { 
return time; 
} 
public void settime(string time) { 
this.time = time; 
} 
}

步骤三：编写子布局（time_item.xml）

<?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="75dp" 
android:orientation="horizontal"> 
<!--线条部分--> 
<linearlayout 
android:layout_width="wrap_content" 
android:layout_height="match_parent" 
android:gravity="center_horizontal" 
android:orientation="vertical" 
android:paddingleft="30dp"> 
<view 
android:layout_width="3dp" 
android:layout_height="20dp" 
android:background="#cbcbcb" /> 
<imageview 
android:layout_width="15dp" 
android:layout_height="15dp" 
android:background="@drawable/time_cycle" /> 
<view 
android:layout_width="3dp" 
android:layout_height="40dp" 
android:background="#cbcbcb" /> 
</linearlayout> 
<!--文字部分--> 
<linearlayout 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
android:paddingleft="30dp" 
android:paddingright="30dp" 
android:paddingtop="20dp"> 
<textview 
android:id="@+id/tv_content" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:text="【广东省中国邮政集团公司深圳市龙华函件中心】已收寄" 
android:textcolor="#ababab" /> 
<textview 
android:id="@+id/tv_time" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:layout_below="@id/tv_content" 
android:text="2016-05-03 00:22:36" 
android:textcolor="#ababab" /> 
</linearlayout> 
</linearlayout> 

其效果如图：

步骤四：编写父布局（activity_main.xml）

<?xml version="1.0" encoding="utf-8"?> 
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent"> 
<listview 
android:id="@+id/lv" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:divider="@null" 
android:listselector="@android:color/transparent" /> 
</relativelayout> 

步骤五：编写子布局的适配器（kuaidiadapter.java）

public class kuaidiadapter extends baseadapter { 
//印章数据 
private list<kuaidi> list; 
private layoutinflater minflater; 
public kuaidiadapter(context context, list<kuaidi> list) { 
this.list = list; 
minflater = layoutinflater.from(context); 
} 
@override 
public int getcount() { 
return list.size(); 
} 
@override 
public object getitem(int position) { 
return list.get(position); 
} 
@override 
public long getitemid(int position) { 
return position; 
} 
@override 
public view getview(int position, view convertview, viewgroup parent) { 
if (convertview == null) { 
convertview = minflater.inflate(r.layout.time_item, null); 
} 
viewholder holder = getviewholder(convertview); 
kuaidi kd = list.get(position); 
holder.tv_content.settext(kd.getcontent()); 
holder.tv_time.settext(kd.gettime()); 
return convertview; 
} 
/** 
* 获得控件管理对象 
* 
* @param view 
* @return 
*/ 
private viewholder getviewholder(view view) { 
viewholder holder = (viewholder) view.gettag(); 
if (holder == null) { 
holder = new viewholder(view); 
view.settag(holder); 
} 
return holder; 
} 
/** 
* 控件管理类 
*/ 
private class viewholder { 
private textview tv_content, tv_time; 
viewholder(view view) { 
tv_content = (textview) view.findviewbyid(r.id.tv_content); 
tv_time = (textview) view.findviewbyid(r.id.tv_time); 
} 
} 
}

步骤六：在父布局中设置适配器

public class mainactivity extends appcompatactivity { 
private listview lv; 
private kuaidiadapter adapter; 
private list<kuaidi> list; 
@override 
protected void oncreate(bundle savedinstancestate) { 
super.oncreate(savedinstancestate); 
setcontentview(r.layout.activity_main); 
lv = (listview) findviewbyid(r.id.lv); 
list =new arraylist<>(); 
list.add(new kuaidi("2016-09-18 08:33:50","您的订单开始处理")); 
list.add(new kuaidi("2016-09-18 08:40:23","您的订单待配货")); 
list.add(new kuaidi("2016-09-18 08:51:33","您的包裹已出库")); 
list.add(new kuaidi("2016-09-18 21:12:53","【深圳市龙华函件中心】已收寄")); 
list.add(new kuaidi("2016-09-18 17:44:20","到达【深圳】")); 
list.add(new kuaidi("2016-09-18 21:26:51","离开【深圳市龙华函件中心】，下一站【深圳市】")); 
list.add(new kuaidi("2016-09-18 23:18:21","到达【深圳市处理中心】")); 
list.add(new kuaidi("2016-09-19 01:14:30","离开【深圳市处理中心】，下一站【广州市】")); 
list.add(new kuaidi("2016-09-19 04:42:11","到达【广东省广州邮件处理中心】")); 
adapter = new kuaidiadapter(this,list); 
lv.setadapter(adapter); 
} 
}

以上所述是小编给大家介绍的android控件之使用listview实现时间轴效果，希望对大家有所帮助