本文实例为大家分享了最简单的SD卡文件遍历程序，供大家参考，具体内容如下

package com.wenhao.test.sddemo;import java.io.File;import android.app.Activity;import android.os.Bundle;import android.os.Environment;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class MainDemo extends Activity { /** Called when the activity is first created. */ private Button button = null; private File path; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); button = (Button)findViewById(R.id.mybutton); //检测SD卡是否存在 if (Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)) { path = Environment.getExternalStorageDirectory(); }else{ Toast.makeText(this, "没有SD卡", Toast.LENGTH_LONG).show(); finish(); } button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub getAllFiles(path); } }); } // 遍历接收一个文件路径，然后把文件子目录中的所有文件遍历并输出来 private void getAllFiles(File root){ File files[] = root.listFiles(); if(files != null){ for (File f : files){ if(f.isDirectory()){ getAllFiles(f); }else{ System.out.println(f); } } } } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。