Android File or Folder listing from Sd Card | Android File explorer |Android folder listing | List file from sd card android

Hello Friends,
            This sample helps you in browsing your Sd Card folder and files. List all your music folder, file and images programmatically .

Here are the code:

1.ListFolder.Java

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1. package com.android.sdcard.folder;  
2.   
3. import java.io.File;  
4. import java.sql.Date;  
5. import java.util.ArrayList;  
6. import java.util.Collections;  
7. import java.util.List;  
8. import java.text.DateFormat;  
9.   
10. import com.example.fileexplorer.R;  
11.   
12. import android.os.Bundle;  
13. import android.app.ListActivity;  
14. import android.content.Intent;  
15. import android.view.View;  
16. import android.widget.ListView;  
17.   
18. public class ListFolder extends ListActivity {  
19.   
20.  private File currentDir;  
21.  private FileArrayAdapter adapter;  
22.   
23.  @Override  
24.  public void onCreate(Bundle savedInstanceState) {  
25.   super.onCreate(savedInstanceState);  
26.   currentDir = new File("/sdcard/");  
27.   fill(currentDir);  
28.  }  
29.   
30.  private void fill(File f) {  
31.   File[] dirs = f.listFiles();  
32.   this.setTitle("Current Dir: " + f.getName());  
33.   List<albumb> dir = new ArrayList<albumb>();  
34.   List<albumb> fls = new ArrayList<albumb>();  
35.   try {  
36.    for (File ff : dirs) {  
37.     String name = ff.getName();  
38.     Date lastModDate = new Date(ff.lastModified());  
39.     DateFormat formater = DateFormat.getDateTimeInstance();  
40.     String date_modify = formater.format(lastModDate);  
41.     /* 
42.      * Note: Remove this 
43.      * name.equalsIgnoreCase("Covenant and Augment Softsol" if u 
44.      * want to list all ur sd card file and folder 
45.      */  
46.     if (ff.isDirectory()  
47.               && name.equalsIgnoreCase("Covenant and Augment Softsol")) {  
48.   
49.      File[] fbuf = ff.listFiles();  
50.      int buf = 0;  
51.      if (fbuf != null) {  
52.       buf = fbuf.length;  
53.      } else  
54.       buf = 0;  
55.      String num_item = String.valueOf(buf);  
56.      if (buf == 0)  
57.       num_item = num_item + " item";  
58.      else  
59.       num_item = num_item + " items";  
60.   
61.      // String formated = lastModDate.toString();  
62.      dir.add(new Albumb(ff.getName(), num_item, date_modify, ff  
63.        .getAbsolutePath(), "directory_icon"));  
64.     } else {  
65.      /* 
66.       * Note: Remove this 
67.       * f.getName().equalsIgnoreCase("Covenant and Augment Softsol" 
68.       * if u want to list all ur sd card file and folder 
69.       */  
70.      if (f.getName().equalsIgnoreCase(  
71.        "Covenant and Augment Softsol")) {  
72.       fls.add(new Albumb(ff.getName(), ff.length() + " Byte",  
73.         date_modify, ff.getAbsolutePath(), "file_icon"));  
74.      }  
75.     }  
76.    }  
77.   } catch (Exception e) {  
78.   
79.   }  
80.   Collections.sort(dir);  
81.   Collections.sort(fls);  
82.   dir.addAll(fls);  
83.   if (!f.getName().equalsIgnoreCase("sdcard"))  
84.    dir.add(0, new Albumb("..", "Parent Directory", "", f.getParent(),  
85.      "directory_up"));  
86.   adapter = new FileArrayAdapter(ListFolder.this, R.layout.file_view, dir);  
87.   this.setListAdapter(adapter);  
88.  }  
89.   
90.  @Override  
91.  protected void onListItemClick(ListView l, View v, int position, long id) {  
92.   // TODO Auto-generated method stub  
93.   super.onListItemClick(l, v, position, id);  
94.   Albumb o = adapter.getItem(position);  
95.   if (o.getImage().equalsIgnoreCase("directory_icon")  
96.     || o.getImage().equalsIgnoreCase("directory_up")) {  
97.    currentDir = new File(o.getPath());  
98.    fill(currentDir);  
99.   }  
100.  }  
101.   
102. }  
103.   
104. </albumb></albumb></albumb></albumb>  

package com.android.sdcard.folder;

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

import com.example.fileexplorer.R;

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

public class ListFolder extends ListActivity {

 private File currentDir;
 private FileArrayAdapter adapter;

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  currentDir = new File("/sdcard/");
  fill(currentDir);
 }

 private void fill(File f) {
  File[] dirs = f.listFiles();
  this.setTitle("Current Dir: " + f.getName());
  List dir = new ArrayList();
  List fls = new ArrayList();
  try {
   for (File ff : dirs) {
    String name = ff.getName();
    Date lastModDate = new Date(ff.lastModified());
    DateFormat formater = DateFormat.getDateTimeInstance();
    String date_modify = formater.format(lastModDate);
    /*
     * Note: Remove this
     * name.equalsIgnoreCase("Covenant and Augment Softsol" if u
     * want to list all ur sd card file and folder
     */
    if (ff.isDirectory()
              && name.equalsIgnoreCase("Covenant and Augment Softsol")) {

     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 Albumb(ff.getName(), num_item, date_modify, ff
       .getAbsolutePath(), "directory_icon"));
    } else {
     /*
      * Note: Remove this
      * f.getName().equalsIgnoreCase("Covenant and Augment Softsol"
      * if u want to list all ur sd card file and folder
      */
     if (f.getName().equalsIgnoreCase(
       "Covenant and Augment Softsol")) {
      fls.add(new Albumb(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("sdcard"))
   dir.add(0, new Albumb("..", "Parent Directory", "", f.getParent(),
     "directory_up"));
  adapter = new FileArrayAdapter(ListFolder.this, R.layout.file_view, 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);
  Albumb o = adapter.getItem(position);
  if (o.getImage().equalsIgnoreCase("directory_icon")
    || o.getImage().equalsIgnoreCase("directory_up")) {
   currentDir = new File(o.getPath());
   fill(currentDir);
  }
 }

}

2. Albumb.java

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1. package com.android.sdcard.folder;  
2.   
3.  public class Albumb implements Comparable<albumb>{  
4.  private String name;  
5.  private String data;  
6.  private String date;  
7.  private String path;  
8.  private String image;  
9.    
10.  public Albumb(String name,String date, String dt, String path, String image)  
11.  {  
12.   this.name = name;  
13.   this.data = date;  
14.   this.path = path;   
15.   this.image = image;  
16.     
17.  }  
18.  public String getName()  
19.  {  
20.   return name;  
21.  }  
22.  public String getData()  
23.  {  
24.   return data;  
25.  }  
26.  public String getDate()  
27.  {  
28.   return date;  
29.  }  
30.  public String getPath()  
31.  {  
32.   return path;  
33.  }  
34.  public String getImage() {  
35.   return image;  
36.  }  
37.    
38.  public int compareTo(Albumb o) {  
39.   if(this.name != null)  
40.    return this.name.toLowerCase().compareTo(o.getName().toLowerCase());   
41.   else   
42.    throw new IllegalArgumentException();  
43.  }  
44. }  
45.   
46. </albumb>  

package com.android.sdcard.folder;

 public class Albumb implements Comparable{
 private String name;
 private String data;
 private String date;
 private String path;
 private String image;
 
 public Albumb(String name,String date, String dt, String path, String image)
 {
  this.name = name;
  this.data = date;
  this.path = path; 
  this.image = image;
  
 }
 public String getName()
 {
  return name;
 }
 public String getData()
 {
  return data;
 }
 public String getDate()
 {
  return date;
 }
 public String getPath()
 {
  return path;
 }
 public String getImage() {
  return image;
 }
 
 public int compareTo(Albumb o) {
  if(this.name != null)
   return this.name.toLowerCase().compareTo(o.getName().toLowerCase()); 
  else 
   throw new IllegalArgumentException();
 }
}

3. FileArrayAdapter.java

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1. package com.android.sdcard.folder;  
2.   
3. import java.util.List;  
4.   
5. import com.example.fileexplorer.R;  
6.   
7. import android.content.Context;  
8. import android.graphics.Bitmap;  
9. import android.graphics.BitmapFactory;  
10. import android.graphics.drawable.Drawable;  
11. import android.view.LayoutInflater;  
12. import android.view.View;  
13. import android.view.ViewGroup;  
14. import android.widget.ArrayAdapter;  
15. import android.widget.Gallery;  
16. import android.widget.ImageView;  
17. import android.widget.TextView;  
18.   
19. public class FileArrayAdapter extends ArrayAdapter<albumb> {  
20.   
21.  private Context c;  
22.  private int id;  
23.  private List<albumb> items;  
24.   
25.  public FileArrayAdapter(Context context, int textViewResourceId,  
26.    List<albumb> objects) {  
27.   super(context, textViewResourceId, objects);  
28.   c = context;  
29.   id = textViewResourceId;  
30.   items = objects;  
31.  }  
32.   
33.  public Albumb getItem(int i) {  
34.   return items.get(i);  
35.  }  
36.   
37.  @Override  
38.  public View getView(int position, View convertView, ViewGroup parent) {  
39.   View v = convertView;  
40.   if (v == null) {  
41.    LayoutInflater vi = (LayoutInflater) c  
42.      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);  
43.    v = vi.inflate(id, null);  
44.   }  
45.   
46.   /* create a new view of my layout and inflate it in the row */  
47.   // convertView = ( RelativeLayout ) inflater.inflate( resource, null );  
48.   
49.   final Albumb item = items.get(position);  
50.   if (item != null) {  
51.    TextView t1 = (TextView) v.findViewById(R.id.TextView01);  
52.    TextView t2 = (TextView) v.findViewById(R.id.TextView02);  
53.    TextView t3 = (TextView) v.findViewById(R.id.TextViewDate);  
54.    /* Take the ImageView from layout and set the city's image */  
55.    ImageView imageCity = (ImageView) v.findViewById(R.id.fd_Icon1);  
56.   
57.    String type = item.getImage();  
58.    if (type.equalsIgnoreCase("directory_icon")) {  
59.     String uri = "drawable/" + item.getImage();  
60.     int imageResource = c.getResources().getIdentifier(uri, null,  
61.       c.getPackageName());  
62.     Drawable image = c.getResources().getDrawable(imageResource);  
63.     imageCity.setImageDrawable(image);  
64.    } else {  
65.     Bitmap bmp = BitmapFactory.decodeFile(item.getPath());  
66.     imageCity.setImageBitmap(bmp);  
67.    }  
68.    if (t1 != null)  
69.     t1.setText(item.getName());  
70.    if (t2 != null)  
71.     t2.setText(item.getData());  
72.    if (t3 != null)  
73.     t3.setText(item.getDate());  
74.   
75.   }  
76.   return v;  
77.  }  
78.   
79. }  
80. </albumb></albumb></albumb>  

package com.android.sdcard.folder;

import java.util.List;

import com.example.fileexplorer.R;

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

public class FileArrayAdapter extends ArrayAdapter {

 private Context c;
 private int id;
 private List items;

 public FileArrayAdapter(Context context, int textViewResourceId,
   List objects) {
  super(context, textViewResourceId, objects);
  c = context;
  id = textViewResourceId;
  items = objects;
 }

 public Albumb getItem(int i) {
  return items.get(i);
 }

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  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 );

  final Albumb item = items.get(position);
  if (item != 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 type = item.getImage();
   if (type.equalsIgnoreCase("directory_icon")) {
    String uri = "drawable/" + item.getImage();
    int imageResource = c.getResources().getIdentifier(uri, null,
      c.getPackageName());
    Drawable image = c.getResources().getDrawable(imageResource);
    imageCity.setImageDrawable(image);
   } else {
    Bitmap bmp = BitmapFactory.decodeFile(item.getPath());
    imageCity.setImageBitmap(bmp);
   }
   if (t1 != null)
    t1.setText(item.getName());
   if (t2 != null)
    t2.setText(item.getData());
   if (t3 != null)
    t3.setText(item.getDate());

  }
  return v;
 }

}

4. AndroidManifest,xml

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1. <manifest xmlns:android="http://schemas.android.com/apk/res/android"  
2.     package="com.example.fileexplorer"  
3.     android:versionCode="1"  
4.     android:versionName="1.0" >  
5.   
6.     <uses-sdk  
7.         android:minSdkVersion="8"  
8.         android:targetSdkVersion="15" />  
9.   
10.     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  
11.     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />  
12.     <application  
13.         android:icon="@drawable/ic_launcher"  
14.         android:label="@string/app_name"  
15.         android:theme="@style/AppTheme" >  
16.         <activity  
17.             android:name="com.android.sdcard.folder.ListFolder"  
18.             android:label="@string/title_activity_fileexplorer"  
19.             android:theme="@android:style/Theme.Holo" >  
20.             <intent-filter>  
21.                 <action android:name="android.intent.action.MAIN" />  
22.   
23.                 <category android:name="android.intent.category.LAUNCHER" />  
24.             </intent-filter>  
25.         </activity>  
26.     </application>  
27. </manifest>  

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.fileexplorer"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.android.sdcard.folder.ListFolder"
            android:label="@string/title_activity_fileexplorer"
            android:theme="@android:style/Theme.Holo" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

Download complete code here



Hope this will helps some one.
Enjoy Coidng :)