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The source code is released under:
GNU Lesser General Public License
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package net.dojangdev.SamplePad; //w w w . jav a 2 s . c o m import net.dojangdev.SamplePad.NotePad; import net.dojangdev.SamplePad.R; import android.app.Activity; import android.content.Intent; import android.content.Intent.ShortcutIconResource; import android.os.Bundle; import android.provider.LiveFolders; /** * This Activity creates a live folder Intent and * sends it back to HOME. From the data in the Intent, HOME creates a live folder and displays * its icon in the Home view. * When the user clicks the icon, Home uses the data it got from the Intent to retrieve information * from a content provider and display it in a View. * * The intent filter for this Activity is set to ACTION_CREATE_LIVE_FOLDER, which * HOME sends in response to a long press and selection of Live Folder. */ public class NotesLiveFolder extends Activity { /** * All of the work is done in onCreate(). The Activity doesn't actually display a UI. * Instead, it sets up an Intent and returns it to its caller (the HOME activity). */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); /* * Gets the incoming Intent and its action. If the incoming Intent was * ACTION_CREATE_LIVE_FOLDER, then create an outgoing Intent with the * necessary data and send back OK. Otherwise, send back CANCEL. */ final Intent intent = getIntent(); final String action = intent.getAction(); if (LiveFolders.ACTION_CREATE_LIVE_FOLDER.equals(action)) { // Creates a new Intent. final Intent liveFolderIntent = new Intent(); /* * The following statements put data into the outgoing Intent. Please see * {@link android.provider.LiveFolders for a detailed description of these * data values. From this data, HOME sets up a live folder. */ // Sets the URI pattern for the content provider backing the folder. liveFolderIntent.setData(NotePad.Notes.LIVE_FOLDER_URI); // Adds the display name of the live folder as an Extra string. String foldername = getString(R.string.live_folder_name); liveFolderIntent.putExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME, foldername); // Adds the display icon of the live folder as an Extra resource. ShortcutIconResource foldericon = Intent.ShortcutIconResource.fromContext(this, R.drawable.live_folder_notes); liveFolderIntent.putExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON, foldericon); // Add the display mode of the live folder as an integer. The specified // mode causes the live folder to display as a list. liveFolderIntent.putExtra( LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE, LiveFolders.DISPLAY_MODE_LIST); /* * Adds a base action for items in the live folder list, as an Intent. When the * user clicks an individual note in the list, the live folder fires this Intent. * * Its action is ACTION_EDIT, so it triggers the Note Editor activity. Its * data is the URI pattern for a single note identified by its ID. The live folder * automatically adds the ID value of the selected item to the URI pattern. * * As a result, Note Editor is triggered and gets a single note to retrieve by ID. */ Intent returnIntent = new Intent(Intent.ACTION_EDIT, NotePad.Notes.CONTENT_ID_URI_PATTERN); liveFolderIntent.putExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT, returnIntent); /* Creates an ActivityResult object to propagate back to HOME. Set its result indicator * to OK, and sets the returned Intent to the live folder Intent that was just * constructed. */ setResult(RESULT_OK, liveFolderIntent); } else { // If the original action was not ACTION_CREATE_LIVE_FOLDER, creates an // ActivityResult with the indicator set to CANCELED, but do not return an Intent setResult(RESULT_CANCELED); } // Closes the Activity. The ActivityObject is propagated back to the caller. finish(); } }