问题描述

安卓开发：怎样向list里面连续不断地存值，并读取出来？

目前需要不断从GPS那获取经纬度值，然后存储到list里面，再然后读取出来，绘制折线。
怎样才能实现不断存入经纬度，然后再读取出来？
如下：
private List mList;
mList=new ArrayList();//实例化list
GeoPoint pt = new GeoPoint((int)(location.getLatitude()*1e6),
(int)(location.getLongitude()*1e6));
我每隔5秒接收一次经纬度数据，然后我对存值那里有些疑问，请各位帮帮忙吧，多谢大家了！

解决方案

是要这个吗？

 mList.add(pt);//添加
 for(int i=0;i<mList.size();i++){//取值
    GeoPoint pt =(GeoPoint)mList.get(i);
 }

解决方案二：

序列化，反序列化

     public static void serialize(Object obj, String fileName) {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        try {
            ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
            objectOutputStream.writeObject(obj);
            FileOutputStream fileOutputStream = new FileOutputStream(fileName);
            fileOutputStream.write(byteArrayOutputStream.toByteArray());
            fileOutputStream.flush();
            objectOutputStream.close();
            fileOutputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static Object deserialize(String fileName) {
        Object obj = null;
        try {
            FileInputStream fileInputStream = new FileInputStream(fileName);
            ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
            try {
                obj = objectInputStream.readObject();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }
            fileInputStream.close();
            objectInputStream.close();
        } catch (IOException e) {
            obj = null;
            e.printStackTrace();
        }
        return obj;
    }