Android

Android Listview Example file folder explorer
Author : Ishtek

Using Android API Level : 7 
After working on various examples on ListView element from Android API,
I have tried to demonstrate a simple (at least I think so) file/folder
explorer user interface for showing list of files/folders those are
present under a folder as specified by the text box entry.



As depicted in the screen shown above, there is a EditText view, a button
and a ListView. These Android components are laid out using combination
of frame layout and linear layout. I have used a layout as shown below:



I have used FrameLayout->LinearLayout->EditText
                                     ->Button
                       ->LinearLayout->ListView

More details of the layout is as shown below:
main.xml					   
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#449955"> <LinearLayout android:layout_gravity="top" android:layout_width="fill_parent" android:layout_height="wrap_content"> <EditText android:id="@+id/edTxt" android:layout_width="200dip" android:layout_height="wrap_content"/> <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="List"/> </LinearLayout> <LinearLayout android:layout_gravity="bottom" android:layout_width="fill_parent" android:layout_height="wrap_content"> <ListView android:id="@+id/listView" android:layout_width="fill_parent" android:background="#334433" android:layout_height="wrap_content"/> </LinearLayout> </FrameLayout>
This is the main Activity for the main screen with the Edit box and ListView component placed on the main FrameLayout instance. OnClick listener is registered with the button instance, and is over-ridden to provide onclick handler method. This method calls helper class to bet list of folders and files present under the edit box supplied text. DirLister.java
package demo.dir.list; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.ViewGroup; import android.view.View.OnClickListener; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; public class DirLister extends Activity { private DirAdapter dirAdapter = null; private ListView lstView = null; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); lstView = (ListView) findViewById(R.id.listView); Button btn = (Button) findViewById(R.id.btn); final EditText edTxt = (EditText) findViewById(R.id.edTxt); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { try { String[] listFill = DirListHelper.getLabelsList(edTxt .getText().toString()); if (dirAdapter == null) { dirAdapter = new DirAdapter(); } lstView.setAdapter(dirAdapter); dirAdapter.setFiles(listFill); dirAdapter.notifyDataSetChanged(); } catch (Exception e) { Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_SHORT); } } }); } private class DirAdapter extends BaseAdapter { private String[] files; public void setFiles(String[] argFiles) { this.files = argFiles; } @Override public int getCount() { if (files != null) return files.length; else return 0; } @Override public Object getItem(int position) { return null; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { TextView txtView = new TextView(getApplicationContext()); txtView.setText(files[position]); return txtView; } } }
Following code is that of a helper class that just helps in finding list of files and folders for a given folder path as argument to it. DirListHelper.java
package demo.dir.list; import java.io.File; import android.content.Context; public class DirListHelper { public DirListHelper(Context context) { } public static String[] getLabelsList(String path) throws Exception { String[] filesList = null; try { File file = new File(path); filesList = file.list(); } catch(Exception ex) { throw ex; } return filesList; } }
If interested in commenting related to Android ListView with File Explorer Example
Click Here

Name (To be shown on this Page:*

Email (Not to be shown):*

Website (To be shown on this Page)

Your Comments here (To be shown on this Page):*

(You can use <a> Tag in your comments)

Please enter same number as shown here 680

Name: HiepDated: 2016-01-23 20:18:53
thank you very much    
Reply
Click Here

Name (To be shown on Page):*

Email (Optional): (never shown)

Website (To be shown on this Page)

Your Comments here (To be shown on Page):*

Please enter same number as shown here 586




Android Thread Example

REST Interview Questions

JAX-WS Webservice Example

Android Overlap SurfaceView Example

Spring3 Integration of File Endpoint

JAXWS Webservice Example

Android WebView Example

Android Context Menu Example

Setting up Eclipse for Android App Development

Android SensorEvent Orientation Example

Android ImageSwitcher Example

REST API Design for Android App

Android ExpandableListView Example

Singleton Serializable on Android

Android GPS with Google MAP Example

Android Project With Example

Android Project Manageing Files

Project Ideas for App on Android Platform

Android EditText with Background

Android SQLite Database Example

Android AutoCompleteTextView Example

Android Tester

Android Interview Questions

Android ListView Example

Android Intent Notification Example

Android Intent Broadcast Example

Android TextView Link Example

Android Sensor List

Android Sensor Orientation Example

Android Intent Broadcast Receiver

Android Gallery SurfaceViews Example

Android Location Example

Android Text to Speech Example

Android Intent Example

Android Layout Example

Android Download File Example

Android Expandable ListView Example

Android Tab Example

Android RelativeLayout Example

Android Intent Example

Android Text to Speech Example

Android SQLite Example

Android CustomView Example

Android Canvas Example

Android SharedPreferences Example

Android Shape Background Example

Android ShapeButton Example

Android ViewFlipper Example

Android Gallery Example

Android TimePickerDialog Example





If interested commenting on this Page :

comments powered by Disqus
Any source code found on any of the page(s) in Techiecommunity.net is associated with following notice: 
   /*
     * TECHIECOMMUNITY.NET MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
     * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
     * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
     * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. TECHIECOMMUNITY.NET SHALL NOT BE LIABLE FOR
     * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
     * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
     *
     * THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
     * CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
     * PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
     * NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
     * SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
     * SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
     * PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). TECHIECOMMUNITY.NET
     * SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
     * HIGH RISK ACTIVITIES.
     */
   
The content provided in this page is NOT warranted and/or NOT guaranteed by techiecommunity.net .
techiecommunity.net is not liable for any negative consequences that may result/arise from 
implementing directly/indirectly any information covered in these pages/articles/tutorials.

For any of the content, if you would like to bring it to notice for removal from this web site, 
please write to this web site administrator @ EMAIL-ID (please remove space before and after @),
with appropriate concern and supporting proof(s). After thorough review and if found genuine concern,
we would take appropriate action and remove disputed content from this web site within 24 hours 
starting from the time it has brought to techiecommunity.net Administrator notice.

This website uses cookies and third party cookies to improve the user experience. 
And to provide more relevant ads. 
In case of continued use of this website implies that you accept the use of cookies on this website.
		
While using this web site, you agree to have read and accepted techiecommunity.net terms of use and privacy policy.