Activity之间传递列表

activtiy之间通过Intent传递数据，但是一般只能传递基本类型的，下面给出传递列表的方法：

1.要传递的类，需要实现Parcelable接口

package com.yyu.utils; 

import android.os.Parcel;
import android.os.Parcelable;


public class MyFileInfor implements Parcelable
{
	
	/*文件名字*/
	private String fileName = null;
	/*文件绝对路径*/
	private String fileUrl = null;
	/*文件大小*/
	private long fileSize = 0;

	public void setFileName(String fileName)
	{
		this.fileName = fileName;
	}
	
	public void setFileUrl(String fileUrl)
	{
		this.fileUrl = fileUrl;
	}
	
	public void setFileSize(long fileSize)
	{
		this.fileSize = fileSize;
	}
	
	
	
	public String getFileName()
	{
		return fileName;
	}
	
	public String getFileUrl()
	{
		return fileUrl;
	}
	
	public long getFileSize()
	{
		return fileSize;
	}

	public static final Parcelable.Creator<MyFileInfor> CREATOR = new Creator<MyFileInfor>()
	{

		@Override
		public MyFileInfor createFromParcel(Parcel source)
		{
			// TODO Auto-generated method stub
			MyFileInfor fileInfor = new MyFileInfor();
			fileInfor.setFileName(source.readString());
			fileInfor.setFileUrl(source.readString());
			fileInfor.setFileSize(source.readLong());
			return fileInfor;
		}

		@Override
		public MyFileInfor[] newArray(int size)
		{
			// TODO Auto-generated method stub
			return new MyFileInfor[size];
		}
	};
	
	/**
	*callbacks
	*/
	@Override
	public int describeContents()
	{
		// TODO Auto-generated method stub
		return 0;
	}

	/**
	*callbacks
	*/
	@Override
	public void writeToParcel(Parcel dest, int flags)
	{
		// TODO Auto-generated method stub
		dest.writeString(fileName);
		dest.writeString(fileUrl);
		dest.writeLong(fileSize);
	}
}
 

ArrayList<MyFileInfor> fileList = new ArrayList<MyFileInfor>();//列表必须用ArrayList定义
for(int i=0;i<2000;i++)
{
     MyFileInfor infor = new MyFileInfor();
     Parcel parcel = Parcel.obtain();
     infor = MyFileInfor.CREATOR.createFromParcel(parcel);
     infor.setFileName("" + i);
     fileList.add(infor);
     //parcel.recycle();//不能回收，否则接收出错
}

3.发送

Intent intent = new Intent();
intent.putParcelableArrayListExtra("list", fileList);
intent.setClass(MainActivity.this, SecondTest.class);
startActivity(intent);

List<MyFileInfor> tempList = getIntent().getParcelableArrayListExtra("list");

可以将for循环中i的上限设置高点，或者将setFileName中的字符串设置常些测试看看

Activity之间传递列表

原文：http://blog.csdn.net/fireworkburn/article/details/19402303