Android读取SD卡下面所有的TXT文件名 listView显示出来

来源：http://www.linuxidc.com/Linux/2011-12/49966.htm

package your.txtsdka;  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.sd_list,                  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);                      }                  }              }          }      }  }