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Como listar arquivos da pasta raiz em Java ME

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[[Category:Java ME (Português)]][[Category:Lang-PT]][[Category: Exemplos de código Java ME (Português)]]
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{{ArticleMetaData
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|sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] -->
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|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
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|devices= <!-- Devices tested against - e.g. ''devices=Nokia 6131 NFC, Nokia C7-00'') -->
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|sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) -->
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|platform= <!-- Compatible platforms - e.g. Symbian^1 and later, Qt 4.6 and later -->
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|devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) -->
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|capabilities=<!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. -->
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|translated-by=[[User:Maiconherverton]]
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|translated-from-title=How to list root file systems in Java ME
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|translated-from-id=50976
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|review-by=<!-- After re-review: [[User:username]] -->
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}}[[Category:Java ME]][[Category:Lang-Portuguese]][[Category:Code Examples]]
  
Original: [[How to list root file systems in Java ME]] (Inglês)
 
  
 
==Resumo==
 
==Resumo==
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==Veja também==
 
==Veja também==
* [http://wiki.forum.nokia.com/index.php/How_to_write_data_to_a_file_in_Java_ME How to write data to a file in Java ME]
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* [[How to write data to a file in Java ME]]
* [http://wiki.forum.nokia.com/index.php/How_to_read_an_image_from_Gallery_in_Java_ME How to read an image from Gallery in Java ME]
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* [[How to read an image from Gallery in Java ME]]
* [http://wiki.forum.nokia.com/index.php/How_to_list_files_and_folders_in_Java_ME How to list files and folders in Java ME]
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* [[How to list files and folders in Java ME]]
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<!-- Translation --> [[en:How to list root file systems in Java ME]]

Revision as of 11:33, 8 December 2011

Article Metadata

Artigo
Tradução:
Por maiconherverton
Última alteração feita por hamishwillee em 08 Dec 2011


Resumo

Como listar arquivos da pasta raiz em Java ME. A API FileConnection(JSR-75) e seu método FileSystemRegistry.listRoots() existem para este fim.

O código para teste do MIDlet:

Código fonte: RootMIDlet.java

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.Enumeration;
import javax.microedition.io.file.*;
 
public class RootMIDlet extends MIDlet implements CommandListener {
private Form form;
private Command exitCommand;
 
public void startApp() {
form = new Form("Root list");
exitCommand = new Command("Exit", Command.EXIT, 1);
form.addCommand(exitCommand);
form.setCommandListener(this);
Display.getDisplay(this).setCurrent(form);
createRootList();
}
 
public void pauseApp() {
}
 
public void destroyApp(boolean unconditional) {
}
 
protected void createRootList() {
form.append("Roots:\n");
Enumeration drives = FileSystemRegistry.listRoots();
while (drives.hasMoreElements()) {
String driveString = drives.nextElement().toString();
form.append(driveString + "\n");
}
}
 
public void commandAction(Command c, Displayable d) {
if (c == exitCommand) this.notifyDestroyed();
}
}

Veja também

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