如何获取唯一的目录列表android

Question

我有很好的工作android列表，我只需要显示目录。 我尝试了一些方法，但它没有做事。 使用isDirectory（）方法，我想我不是那样使用它。

private String path; 

      @Override 
      protected void onCreate(Bundle savedInstanceState) { 
       super.onCreate(savedInstanceState); 
       setContentView(R.layout.menu); 

       path = Environment.getExternalStorageDirectory().toString(); 
       if (getIntent().hasExtra("path")) { 
        path = getIntent().getStringExtra("path"); 
       } 

       // Read all files sorted into the values-array 
       List<String> values = new ArrayList(); 
       File dir = new File(path); 
       if (!dir.canRead()) { 
        setTitle(getTitle() + " (inaccessible)"); 
       } 

       String[] list = {};; 
       if (new File(path).isDirectory() == true) { 
       list = dir.list(); 
       } else {return;} 
       if (list != null) { 
        for (String file : list) { 
         if (new File(path).isDirectory() == true) { // !file.startsWith(".") && 
          values.add(file); 
         } else {return;} 
        } 
       } 
       Collections.sort(values); 
       // Put the data into the list 
       ArrayAdapter adapter = new ArrayAdapter(this, 
         android.R.layout.simple_list_item_2, android.R.id.text1, values); 
       setListAdapter(adapter); 
      } 

Answer 1

尝试是这样的

File f = new File(path); 

//list files 
File[] filesList = f.listFiles(); //Returns an array of files contained in the directory represented by this file. 

//iterate list of files 
for (File inFile : files) { 
    if (inFile.isDirectory()) { 
     // Check is directory 
    } 
}