本文实例讲述了Android实现读取SD卡下所有TXT文件名并用listView显示出来的方法。分享给大家供大家参考，具体如下：

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. */ @Override public 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"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <ListView android:id="@+id/lv" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/textView1" android:layout_marginTop="62dp" > </ListView></RelativeLayout>

pes.xml

<?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:orientation="vertical" > <TextView android:id="@+id/txt_tv" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="20pt" android:layout_weight="1" /></LinearLayout>

更多关于Android相关内容感兴趣的读者可查看本站专题：《Android编程开发之SD卡操作方法汇总》、《Android文件操作技巧汇总》、《Android数据库操作技巧总结》、《Android编程之activity操作技巧总结》、《Android开发入门与进阶教程》、《Android资源操作技巧汇总》、《Android视图View技巧总结》及《Android控件用法总结》

希望本文所述对大家Android程序设计有所帮助。