Android基础控件——ListView实现时间轴效果
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;
}
}
<?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>
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);
}
}
源码下载：建议使用Import Module导入