Android读取SD卡下面所有的TXT文件名 listView显示出来

MainActivity.java

package com.zxl;import java.io.File;import java.util.ArrayList;import java.util.HashMap;import android.app.Activity;import android.os.Bundle;import android.os.Environment;import android.util.Log;import android.widget.ListView;import android.widget.SimpleAdapter;public class Txt_sdkaActivity extends Activity {private ListView lv;ArrayList name;/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);lv = (ListView) findViewById(R.id.lv);name = new ArrayList();if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {File path = Environment.getExternalStorageDirectory();// 获得SD卡路径// File path = new File("/mnt/sdcard/");File[] files = path.listFiles();// 读取getFileName(files);}SimpleAdapter adapter = new SimpleAdapter(this, name, R.layout.pes, new String[] { "Name" }, new int[] { R.id.txt_tv });lv.setAdapter(adapter);for (int i = 0; i < name.size(); i++) {Log.i("zeng", "list.  name:  " + name.get(i));}}private void getFileName(File[] files) {if (files != null) {// 先判断目录是否为空，否则会报空指针for (File file : files) {if (file.isDirectory()) {Log.i("zeng", "若是文件目录。继续读1" + file.getName().toString() + file.getPath().toString());getFileName(file.listFiles());Log.i("zeng", "若是文件目录。继续读2" + file.getName().toString() + file.getPath().toString());} else {String fileName = file.getName();if (fileName.endsWith(".txt")) {HashMap map = new HashMap();String s = fileName.substring(0, fileName.lastIndexOf(".")).toString();Log.i("zeng", "文件名txt：：   " + s);map.put("Name", fileName .substring(0, fileName.lastIndexOf(".")));name.add(map);}}}}}}

main.xml

<?xml version="1.0" encoding="utf-8"?>

pes.xml

<?xml version="1.0" encoding="utf-8"?>

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