Hinding系統文件夾選擇器

Question

問題： - 「」此代碼工作良好的拿起文件，但我想隱藏的系統文件夾，當我運行此代碼，還告訴我所有的Android文件夾開始我嘗試了一些東西，你可以在我的代碼中的註釋已經看到..

FileChooser.java

package com.sarita.scheduler; 

import java.io.File; 
import java.sql.Date; 
import java.text.DateFormat; 
import java.util.ArrayList; 
import java.util.Collections; 
import java.util.List; 

import android.app.ListActivity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.os.Environment; 
import android.view.View; 
import android.widget.ListView; 

public class FileChooser extends ListActivity { 

    private File currentDir; 
    private FileArrayAdapter adapter; 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     currentDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath()); 
     fill(currentDir); 
    } 
    private void fill(File f) 
    { 
     String rootDriectory = Environment.getExternalStorageDirectory().getName(); ; 

/*  String chkFileName = f.getName().toString(); 
     String chkSystemFolder =String.valueOf(chkFileName.charAt(0)); 
     */ 
     File[]dirs = f.listFiles(); 
     /*if (chkSystemFolder != "."){*/ 
     this.setTitle("Current Dir: "+f.getName()); 
     List<Item>dir = new ArrayList<Item>(); 
     List<Item>fls = new ArrayList<Item>(); 
     try{ 



      for(File ff: dirs) 
      { 
       Date lastModDate = new Date(ff.lastModified()); 
       DateFormat formater = DateFormat.getDateTimeInstance(); 
       String date_modify = formater.format(lastModDate); 
       if(ff.isDirectory()){ 


        File[] fbuf = ff.listFiles(); 
        int buf = 0; 
        if(fbuf != null){ 
         buf = fbuf.length; 
        } 
        else buf = 0; 
        String num_item = String.valueOf(buf); 
        if(buf == 0) num_item = num_item + " item"; 
        else num_item = num_item + " items"; 

        //String formated = lastModDate.toString(); 
        dir.add(new Item(ff.getName(),num_item,date_modify,ff.getAbsolutePath(),"directory_icon")); 
       } 
       else 
       { 

        fls.add(new Item(ff.getName(),ff.length() + " Byte", date_modify, ff.getAbsolutePath(),"file_icon")); 
       } 
      } 

     }catch(Exception e) 
     {  

     } 

     Collections.sort(dir); 
     Collections.sort(fls); 
     dir.addAll(fls); 
     if(!f.getName().equalsIgnoreCase(rootDriectory)) 
      dir.add(0,new Item("..","Parent Directory","",f.getParent(),"directory_up")); 
     adapter = new FileArrayAdapter(FileChooser.this,R.layout.file_explorer,dir); 
     this.setListAdapter(adapter); 
     /*}*/ 
    } 
    @Override 
    protected void onListItemClick(ListView l, View v, int position, long id) { 
     // TODO Auto-generated method stub 
     super.onListItemClick(l, v, position, id); 
     Item o = adapter.getItem(position); 
     if(o.getImage().equalsIgnoreCase("directory_icon")||o.getImage().equalsIgnoreCase("directory_up")){ 
       currentDir = new File(o.getPath()); 
       fill(currentDir); 
     } 
     else 
     { 
      onFileClick(o); 
     } 
    } 
    private void onFileClick(Item o) 
    { 
     //Toast.makeText(this, "Folder Clicked: "+ currentDir, Toast.LENGTH_SHORT).show(); 
     Intent intent = new Intent(); 
     intent.putExtra("GetPath",currentDir.toString()); 
     intent.putExtra("GetFileName",o.getName()); 
     setResult(RESULT_OK, intent); 
     finish(); 
    } 
} 

FileArrayAdapter.java

package com.sarita.scheduler; 

import java.util.List; 

import android.content.Context; 
import android.graphics.drawable.Drawable; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.ImageView; 
import android.widget.TextView; 


public class FileArrayAdapter extends ArrayAdapter<Item>{ 

    private Context c; 
    private int id; 
    private List<Item>items; 

    public FileArrayAdapter(Context context, int textViewResourceId, 
      List<Item> objects) { 
     super(context, textViewResourceId, objects); 
     c = context; 
     id = textViewResourceId; 
     items = objects; 
    } 
    public Item getItem(int i) 
    { 
     return items.get(i); 
    } 
    @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
     final Item o = items.get(position); 
     String chkFileName = o.getName().toString(); 
     String chkSystemFolder =String.valueOf(chkFileName.charAt(0)); 


       View v = convertView; 
       if (v == null) 
       { 
        LayoutInflater vi = (LayoutInflater)c.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
        v = vi.inflate(id, null); 
       } 

      /* create a new view of my layout and inflate it in the row */ 
      //convertView = (RelativeLayout) inflater.inflate(resource, null); 

       if (chkSystemFolder != ".") 
       {   
       if (o != null) 
       { 
         TextView t1 = (TextView) v.findViewById(R.id.TextView01); 
         TextView t2 = (TextView) v.findViewById(R.id.TextView02); 
         TextView t3 = (TextView) v.findViewById(R.id.TextViewDate); 
         /* Take the ImageView from layout and set the city's image */ 
         ImageView imageCity = (ImageView) v.findViewById(R.id.fd_Icon1); 
         String uri = "drawable/" + o.getImage(); 
         int imageResource = c.getResources().getIdentifier(uri, null, c.getPackageName()); 
         Drawable image = c.getResources().getDrawable(imageResource); 
         imageCity.setImageDrawable(image); 
        if (chkSystemFolder != "."){ 
         if(t1!=null) 
         t1.setText(o.getName()); 
         if(t2!=null) 
          t2.setText(o.getData()); 
         if(t3!=null) 
          t3.setText(o.getDate()); 
        } 
        } 

     } 

     return v; 
     } 

} 

Answer 1

添加以下作爲for第一線您的fill()方法循環：

if(ff.isHidden()) continue; 

File#isHidden()返回true如果它所表示的文件或文件夾被隱藏;即其文件名以'.'開頭。循環內的continue語句會導致循環的當前迭代被跳過。所以，這段代碼基本上是這樣說的：「如果這個文件/文件夾是隱藏的，那就去下一個。」