how to access downloads folder in android?

Question

I am new android, i'm making an app in which one can download files to downloads folder (using Download Manager). I can see pictures if i go to downloads folder in emulator. So if i want to show a slideshow of downloaded files how can i get the access to that folder? Secondly how to add progress bar to this code:--

import java.util.Arrays;  import android.app.Activity; import android.app.DownloadManager; import android.app.DownloadManager.Query; import android.app.DownloadManager.Request; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.view.View; import android.widget.ImageView;  public class Download_managerActivity extends Activity {      private long quueue_for_url;       private DownloadManager dm;          /** Called when the activity is first created. */         @Override         public void onCreate(Bundle savedInstanceState) {             super.onCreate(savedInstanceState);             setContentView(R.layout.main);              BroadcastReceiver receiver = new BroadcastReceiver() {                 @Override                 public void onReceive(Context context, Intent intent) {                     String action = intent.getAction();                      if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {                         long downloadId = intent.getLongExtra(                                 DownloadManager.EXTRA_DOWNLOAD_ID, 0);                         Query query = new Query();                         query.setFilterById(quueue_for_url);                         Cursor c = dm.query(query);                         if (c.moveToFirst()) {                             int columnIndex = c                                     .getColumnIndex(DownloadManager.COLUMN_STATUS);                             if (DownloadManager.STATUS_SUCCESSFUL == c                                     .getInt(columnIndex)) {                                  ImageView view = (ImageView) findViewById(R.id.imageView1);                                 String uri_String_abcd = c                                         .getString(c                                                 .getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));                                 view.setImageURI(Uri.parse(uri_String_abcd));                              }                         }                     }                 }             };              registerReceiver(receiver, new IntentFilter(                     DownloadManager.ACTION_DOWNLOAD_COMPLETE));         }          public void onClick(View view) {             dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);              Request request_for_url = new Request(                     Uri.parse("http://fc03.deviantart.net/fs14/i/2007/086/9/1/Steve_Jobs_portrait_by_tumb.jpg"));              Request request_for_url1 = new Request(                     Uri.parse("http://2.bp.blogspot.com/_q7Rxg4wqDyc/S5ZRVLxVYuI/AAAAAAAAAvU/fQAUZ2XFcp8/s400/katrina-kaif.jpg"));             Request request_for_url2 = new Request(                     Uri.parse("http://www.buzzreactor.com/sites/default/files/Bill-Gates1.jpg"));              quueue_for_url = dm.enqueue(request_for_url);             quueue_for_url = dm.enqueue(request_for_url1);             quueue_for_url = dm.enqueue(request_for_url2);          }          public void showDownload(View view) {             Intent i = new Intent();             //try more options to show downloading , retrieving and complete             i.setAction(DownloadManager.ACTION_VIEW_DOWNLOADS);             startActivity(i);         }     } 

I want to add a button which performs the function of taking the pictures from downloads folder and then display like a slideshow.

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"       package="cmpe235.lab1"       android:versionCode="1"       android:versionName="1.0">     <uses-sdk android:minSdkVersion="9" />  <uses-permission android:name="android.permission.INTERNET"></uses-permission>      <application android:icon="@drawable/icon" android:label="@string/app_name">         <activity android:name=".Download_managerActivity"                   android:label="@string/app_name">             <intent-filter>                 <action android:name="android.intent.action.MAIN" />                 <category android:name="android.intent.category.LAUNCHER" />             </intent-filter>         </activity>      </application> </manifest> 

main.xml:-

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical" android:layout_width="fill_parent"     android:layout_height="fill_parent">       <Button android:text="Start Download" android:id="@+id/button1"         android:layout_width="wrap_content" android:layout_height="wrap_content"          android:layout_gravity="center_vertical|center_horizontal|center" android:textColor="#0000A0"           android:typeface="serif" android:onClick="onClick"></Button>      <Button android:text="View Downloads" android:id="@+id/button2"         android:layout_width="wrap_content" android:layout_height="wrap_content"          android:layout_gravity="center_vertical|center_horizontal|center" android:textColor="#0000A0"           android:typeface="serif" android:onClick="showDownload"></Button>      <ImageView android:layout_height="wrap_content" android:id="@+id/imageView1"         android:src="@drawable/icon" android:layout_width="wrap_content"></ImageView>  </LinearLayout> 

Answer 1

For your first question try

Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);  

(available since API 8)

To access individual files in this directory use either File.list() or File.listFiles(). Seems that reporting download progress is only possible in notification, see here.