Question

我很确定我只是在问一个愚蠢的问题，但是，他说有一个txt文件，上面有这个数据

UniPub; 112 Binara St; ACT
MooseHeads; 54 Cohen St; ACT
Cube; 24 Mawson St; ACT

我使用以下代码在我的应用程序中阅读：

package au.edu.canberra.g30813706;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;

import android.app.Activity;
import android.os.Environment;


public class FileReader extends Activity{{

    ArrayList<String> sInfo = new ArrayList<String>();

    String txtName = "AccomodationTxt.txt";
    File root = Environment.getExternalStorageDirectory();
    File path = new File(root, "CanberraTourism/" + txtName);

    try {

        BufferedReader br = new BufferedReader (
                            new InputStreamReader(
                            new FileInputStream(path)));
        String line;
        String[] saLineElements;
        while ((line = br.readLine()) != null)
        {
            //The information is split into segments and stored into the array
            saLineElements = line.split(";");
            for (int i = 0; i < saLineElements.length; i++) 
                  sInfo.add(saLineElements[i]);
            //sInfo.addAll(Arrays.asList(saLineElements[0], saLineElements[1], saLineElements[3]));     
        }
         br.close();


    } 
    catch (FileNotFoundException e) {

        System.err.println("FileNotFoundException: " + e.getMessage());
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }}
}

我如何区分数组中的行？

例如

我想在一个页面上显示名称的文字，所以只有

UniPub
MooseHeads
立方体

Answer 1

如何将String数组添加到ArrayList而不是单个元素像这样：

ArrayList<String[]> sInfo = new ArrayList<String[]>();
String line;
String[] saLineElements;
while ((line = br.readLine()) != null)
{
    //The information is split into segments and stored into the array
    saLineElements = line.split(";");
        sInfo.add(saLineElements);
}

然后你可以遍历sInfo并使用sInfo中每个数组中的第一个元素。

读取文本文件并填充数组中的数据。

1 个答案: