Android 最簡單的SD卡檔案遍曆程式

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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);                //檢測SD卡是否存在        if (Environment.getExternalStorageState().equals(                Environment.MEDIA_MOUNTED)) {            path = Environment.getExternalStorageDirectory();        }else{            Toast.makeText(this, "沒有SD卡", Toast.LENGTH_LONG).show();            finish();        }                button.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                // TODO Auto-generated method stub                                                getAllFiles(path);            }        });            }        // 遍曆接收一個檔案路徑，然後把檔案子目錄中的所有檔案遍曆並輸出來     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);                  }              }          }      }        }

 

Android 最簡單的SD卡檔案遍曆程式