Android--取出SDcard卡上指定后缀名的文件

1.

import java.io.File;import java.io.FilenameFilter;/** * 后缀名过滤器 * @author ZLQ * */public class FileNameSelector implements FilenameFilter{ String extension = "."; public FileNameSelector(String fileExtensionNoDot) {  extension += fileExtensionNoDot; }  public boolean accept(File dir, String name) {  return name.endsWith(extension); }}

2.

public class AndroidSdCardActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.main);  getName(); }  /**  * 得到以mp3结尾的文件  */ public void getName(){  File file = Environment.getExternalStorageDirectory();  if(file != null){   File[] files = file.listFiles(new FileNameSelector("mp3"));   for(int i = 0; i < files.length; ++i){    Log.i("System.out", files[i].getName());   }  } }}