如何在Android中以編程方式打開目錄

Question

在我的應用程序我有ListActivity中顯示的文件列表現在我想添加額外的選項，如Windows：（打開文件夾位置）打開目錄關閉此文件我測試一些代碼但不工作拋出異常：

File file=new File(path); 
     Uri url = Uri.fromFile(file); 
     Intent intent = new Intent(Intent.ACTION_VIEW); 
     intent.setData(url); 
     startActivity(intent); 

exeption：

03-08 21:14:55.451: E/AndroidRuntime(15708): 
android.content.ActivityNotFoundException: No Activity found to handle Intent { 
act=android.intent.action.VIEW dat=file:///storage/extSdCard/Bluetooth } 

我可以做什麼？

Answer 1

public void openFolder() 
{ 
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
    Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath() 
+ "/Bluetooth /"); 
    intent.setDataAndType(uri); 
    startActivity(Intent.createChooser(intent, "Open folder")); 
    } 

Answer 2

Uri path= Uri.parse(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Bluetooth/"); 
Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
intent.setDataAndType(path, "resource/folder");   **//or "text/csv" for Other Types** 
startActivity(Intent.createChooser(intent, "Open folder"));