Android 时光轴 -记录生活

最新推荐文章于 2021-05-25 22:32:52 发布

原创最新推荐文章于 2021-05-25 22:32:52 发布 · 621 阅读

2 ·

CC 4.0 BY-SA版权

android基础专栏收录该内容

135 篇文章

订阅专栏

/**

*
* 转载请标明出处：http://blog.youkuaiyun.com/u013598111/article/details/50519404

* @author：【JunTao_sun】
*
*

时光轴实现

public class MainActivity extends Activity {

	private ExpandableListView expandlistView;
	private MyExpandAdapter statusAdapter;
	private Context context;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_main);
		context = this;
		expandlistView = (ExpandableListView) findViewById(R.id.expandlist);
		initExpandListView();
	}

	/**
	 * 初始化
	 */
	private void initExpandListView() {
		statusAdapter = new MyExpandAdapter(context, getListData());
		expandlistView.setAdapter(statusAdapter);
		// 去掉默认带的箭头
		expandlistView.setGroupIndicator(null); 
		// 设置默认选中项
		expandlistView.setSelection(0);
	
		// 遍历所有group,将所有项设置成默认展开
		int groupCount = expandlistView.getCount();
		for (int i = 0; i < groupCount; i++) {
			expandlistView.expandGroup(i);
		}

		expandlistView.setOnGroupClickListener(new OnGroupClickListener() {

			@Override
			public boolean onGroupClick(ExpandableListView parent, View v,
					int groupPosition, long id) {
				
				return false;
			}
		});
	}

//	@Override
//	public void onBackPressed() 
//	{
//		Intent intent = new Intent(Intent.ACTION_MAIN);
//		intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//		intent.addCategory(Intent.CATEGORY_HOME);
//		startActivity(intent);
//	}
	 @Override
	 public void onBackPressed()
	 {
	    //按返回键返回桌面
	    moveTaskToBack(true);
	 }
	
	private List<ParentEntity> getListData() {
		List<ParentEntity> groupList;
		String[] strArray = new String[] { "1月5日", "1月2日","12月25日","12月22日","12月20日"};
		String[][] childTimeArray = new String[][] {
				{ "去滑雪", "吃火锅", "回到宿舍看电影", "玩微博" },
				{ "买牛奶，早早餐","吃土司和面包","吃橘子","出去跑步","看电影" },
				{ "送苹果，吃苹果","玩LOL","和朋友聊天","学英语" },
				{ "早起哦，买早餐","玩跑跑卡丁车","做午餐","吃螃蟹","睡觉啦" },
				{ "出去兜风","准备去买菜","去钓鱼","爬山","回家吃饭辣" }};
		groupList = new ArrayList<ParentEntity>();
		for (int i = 0; i < strArray.length; i++) {
			ParentEntity parentEntity = new ParentEntity();
			parentEntity.setGroupName(strArray[i]);

			List<ChildEntity> childList = new ArrayList<ChildEntity>();

			for (int j = 0; j < childTimeArray[i].length; j++) {
				ChildEntity childEntity = new ChildEntity();
				childEntity.setDoingSomThing(childTimeArray[i][j]);

				childList.add(childEntity);
			}

			parentEntity.setChildList(childList);
			groupList.add(parentEntity);
		}
		return groupList;
	}
}

package com.zihao.adapter;

import java.util.List;

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

import com.zihao.R;
import com.zihao.entity.ChildEntity;
import com.zihao.entity.ParentEntity;


public class MyExpandAdapter extends BaseExpandableListAdapter {
	private LayoutInflater inflater = null;
	private List<ParentEntity> groupList;

	/**
	 * 构造方法
	 * 
	 * @param context
	 * @param oneList
	 */
	public MyExpandAdapter(Context context,
			List<ParentEntity> group_list) {
		this.groupList = group_list;
		inflater = (LayoutInflater) context
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	}

	/**
	 * 返回一级Item总数
	 */
	@Override
	public int getGroupCount() {
		// TODO Auto-generated method stub
		return groupList.size();
	}

	/**
	 * 返回二级Item总数
	 */
	@Override
	public int getChildrenCount(int groupPosition) {
		if (groupList.get(groupPosition).getChildList() == null) {
			return 0;
		} else {
			return groupList.get(groupPosition).getChildList().size();
		}
	}

	/**
	 * 获取一级Item内容
	 */
	@Override
	public Object getGroup(int groupPosition) {
		// TODO Auto-generated method stub
		return groupList.get(groupPosition);
	}

	/**
	 * 获取二级Item内容
	 */
	@Override
	public Object getChild(int groupPosition, int childPosition) {
		return groupList.get(groupPosition).getChildList().get(childPosition);
	}

	@Override
	public long getGroupId(int groupPosition) {
		// TODO Auto-generated method stub
		return groupPosition;
	}

	@Override
	public long getChildId(int groupPosition, int childPosition) {
		// TODO Auto-generated method stub
		return childPosition;
	}

	@Override
	public boolean hasStableIds() {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public View getGroupView(int groupPosition, boolean isExpanded,
			View convertView, ViewGroup parent) {

		GroupViewHolder holder = new GroupViewHolder();

		if (convertView == null) {
			convertView = inflater.inflate(R.layout.parent_status_item, null);
		}
		holder.groupName = (TextView) convertView
				.findViewById(R.id.one_status_name);

		holder.groupName.setText(groupList.get(groupPosition).getGroupName());

		return convertView;
	}

	@Override
	public View getChildView(int groupPosition, int childPosition,
			boolean isLastChild, View convertView, ViewGroup parent) {
		ChildViewHolder viewHolder = null;
		ChildEntity entity = (ChildEntity) getChild(groupPosition,
				childPosition);
		if (convertView != null) {
			viewHolder = (ChildViewHolder) convertView.getTag();
		} else {
			viewHolder = new ChildViewHolder();
			convertView = inflater.inflate(R.layout.child_status_item, null);
			viewHolder.dosome = (TextView) convertView
					.findViewById(R.id.dosome);
		}
		viewHolder.dosome.setText(entity.getDoingSomThing());

		convertView.setTag(viewHolder);
		return convertView;
	}

	@Override
	public boolean isChildSelectable(int groupPosition, int childPosition) {
		// TODO Auto-generated method stub
		return false;
	}

	private class GroupViewHolder {
		TextView groupName;
	}

	private class ChildViewHolder {
		public TextView dosome;
	}

}

两个实体类：

package com.zihao.entity;

/**
 * 二级Item实体类
 * 
 * @author zihao
 * 
 */
public class ChildEntity {

	private String dosomething;
	

	public String getDoingSomThing() {
		return dosomething;
	}

	public void setDoingSomThing(String dosomething) {
		this.dosomething = dosomething;
	}

	

}

package com.zihao.entity;

import java.util.List;

/**
 * 一级Item实体类
 * 
 * @author zihao
 * 
 */
public class ParentEntity {
	private String groupName;
	/** 二级Item数据列表 **/
	private List<ChildEntity> childList;

	public String getGroupName() {
		return groupName;
	}

	public void setGroupName(String groupName) {
		this.groupName = groupName;
	}

	public List<ChildEntity> getChildList() {
		return childList;
	}

	public void setChildList(List<ChildEntity> childList) {
		this.childList = childList;
	}

}

<?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"
    android:background="#ededed" >


        <TextView
            android:id="@+id/title_text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:padding="16dp"
            android:background="#ff00ff00"
             android:text="2016年1月4日"
            android:textColor="@android:color/black" />
   

    <View
        android:id="@+id/top_line"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_below="@id/title_text"
        android:background="@color/head_line_bg" />

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@id/top_line" >

        <View
            android:id="@+id/group_tiao"
            android:layout_width="1dp"
            android:layout_height="fill_parent"
            android:layout_marginLeft="55dp"
            android:background="@color/time_line_bg" />

        <TextView
            android:id="@+id/time_axis"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
           android:paddingLeft="70dp"
            android:background="#aa00ff00"
            android:text="time axis"
            android:textColor="@android:color/white"
            android:textSize="20dp" />

        <ExpandableListView
            android:id="@+id/expandlist"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_below="@+id/time_axis"
            android:cacheColorHint="#00000000"
            android:divider="@null" />
    </RelativeLayout>

</RelativeLayout>

<?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_vertical" >

    <TextView
        android:id="@+id/dosome"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="6dp"
        android:layout_marginLeft="70dp"
        android:layout_marginTop="6dp"
        android:textColor="#999999" />

</LinearLayout>

<?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_vertical" >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="20dp"
        android:layout_height="20dp"
       android:layout_marginLeft="45dp"
        android:layout_marginRight="5dp"
        android:background="@drawable/blue"
        android:contentDescription="@string/app_name" />

    <TextView
        android:id="@+id/one_status_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/app_name"
        android:textColor="#000000"
        android:textSize="18sp" />

</LinearLayout>