Android -- 时间轴(ListView)

1. 实现效果

　　如果判断当前的属性和上一个属性相同时，不显示编号信息 ，否则就显示

2.  主要是在适配器上面做判断

　　bean  --> Tip

package com.example.timetest;

/**
 * 封装要显示数据的bean ---> Tip
 *
 * @author Administrator
 *
 */
public class Tip {

	private String name;

	private String time;

	private String day;

	private String number;

	public Tip ( ) {

		super ( );
	}

	public Tip ( String name , String time , String day ,
	               String number ) {

		super ( );
		this.name = name;
		this.time = time;
		this.day = day;
		this.number = number;
	}

	public String getName ( ) {

		return name;
	}

	public void setName ( String name ) {

		this.name = name;
	}

	public String getTime ( ) {

		return time;
	}

	public void setTime ( String time ) {

		this.time = time;
	}

	public String getDay ( ) {

		return day;
	}

	public void setDay ( String day ) {

		this.day = day;
	}

	public String getNumber ( ) {

		return number;
	}

	public void setNumber ( String number ) {

		this.number = number;
	}

}

Java

listView = ( ListView ) findViewById ( R.id.listView );

		List < Tip > list = new ArrayList < Tip > ( );
		list.add ( new Tip ( "1111" , "11:11" , "1" ,
		                              "111111" ) );
		list.add ( new Tip ( "2222" , "22:22" , "1" ,
		                              "2222" ) );
		list.add ( new Tip ( "3333" , "33:33" , "2" ,
		                              "3333" ) );
		list.add ( new Tip ( "4444" , "44:44" , "3" ,
		                              "4444" ) );
		list.add ( new Tip ( "5555" , "55:55" , "3" ,
		                              "5555" ) );
		list.add ( new Tip ( "6666" , "66:66" , "6" ,
		                              "6666" ) );

		adapter = new ListAdapter ( this , list );

		listView.setAdapter ( adapter );

3. 适配器

package com.example.timetest;

import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class ListAdapter extends BaseAdapter {

	public Context context;

	private List < Tip > list;

	public ListAdapter (
	               Context context , List < Tip > list ) {

		this.context = context;
		this.list = list;
	}

	@ Override
	public int getCount ( ) {

		// TODO Auto-generated method stub
		return list.size ( );
	}

	@ Override
	public Tip getItem ( int position ) {

		// TODO Auto-generated method stub
		return list.get ( position );
	}

	@ Override
	public long getItemId ( int position ) {

		// TODO Auto-generated method stub
		return position;
	}

	@ Override
	public View getView ( int position , View convertView ,
	                              ViewGroup parent ) {

		// TODO Auto-generated method stub

		ViewHolder holder = null;
		if (convertView == null) {

			convertView = LayoutInflater.from (
			                              context )
			                              .inflate ( R.layout.list_item ,
			                                                            null );
			holder = new ViewHolder ( );
			holder.name = ( TextView ) convertView
			                              .findViewById ( R.id.name );
			holder.time = ( TextView ) convertView
			                              .findViewById ( R.id.time );
			holder.day = ( TextView ) convertView
			                              .findViewById ( R.id.day );
			holder.number = ( TextView ) convertView
			                              .findViewById ( R.id.number );
			convertView.setTag ( holder );
		}
		else {

			holder = ( ViewHolder ) convertView
			                              .getTag ( );

		}

		Tip tip = list.get ( position );

		holder.name.setText ( tip.getName ( ) );
		holder.time.setText ( tip.getTime ( ) );
		holder.day.setText ( tip.getDay ( ) );
		holder.number.setText ( tip.getNumber ( ) );

		if (position == 0) {

		}
		else {

			if (tip.getDay ( )
			                              .equals ( list.get ( position - 1 )
			                                                            .getDay ( ) )) {
				holder.day.setVisibility ( View.GONE );
			}
			else {
				holder.day.setVisibility ( View.VISIBLE );
			}

		}

		return convertView;
	}

	private class ViewHolder {

		public TextView name;

		public TextView time;

		public TextView day;

		public TextView number;

	}

}

4. layout

<?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="wrap_content"
    android:orientation="horizontal" >

    <!-- day和time 的显示 -->

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="70dp"
        android:layout_marginLeft="10dp"
        android:orientation="vertical" >

        <View
            android:layout_width="1dp"
            android:layout_height="15dp"
            android:layout_marginLeft="15dp"
            android:background="#c7c7c7" />

        <TextView
            android:id="@+id/day"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:background="#c7c7c7"
            android:text="今天" />

        <View
            android:layout_width="1dp"
            android:layout_height="5dp"
            android:layout_marginLeft="15dp"
            android:background="#c7c7c7" />

        <TextView
            android:id="@+id/time"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="12:00" />

        <View
            android:layout_weight="1"
            android:layout_width="1dp"
            android:layout_height="15dp"
            android:layout_marginLeft="15dp"
            android:background="#c7c7c7" />
    </LinearLayout>

    <!-- 中间部分信息的显示 -->

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_marginLeft="10dp"
        android:layout_weight="1"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/test"
            android:textSize="20dp" />

        <TextView
            android:id="@+id/number"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/test"
            android:textSize="16dp" />
    </LinearLayout>

    <!-- 图片的显示 -->

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_marginRight="10dp"
        android:src="@drawable/ic_launcher" />

</LinearLayout>

5.  每天进步一点点  嘿嘿  加油