Android读取SD卡下面所有的TXT文件名，listView显示出来。
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); } } } } } }Android读取SD卡下面所有的TXT文件名 listView显示出
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