File	Doc	Category	Size	Date	Package
TrackerDataHelper.java	API Doc	Android 5.1 API	4986	Thu Mar 12 22:22:44 GMT 2015	com.android.locationtracker.data

TrackerDataHelper

• java.lang.Object

Fields Summary
private android.content.Context	mContext
protected IFormatter	mFormatter formats data output
public static final IFormatter	CSV_FORMATTER formats output as Comma separated value CSV file
public static final IFormatter	KML_FORMATTER formats output as KML file
public static final IFormatter	NO_FORMATTER provides no formatting

Constructors Summary
public TrackerDataHelper(android.content.Context context, IFormatter formatter) Creates instance param context - content context param formatter - formats the output from the get*Output* methods mContext = context; mFormatter = formatter;
public TrackerDataHelper(android.content.Context context) Creates a instance with no output formatting capabilities. Useful for clients that require write-only access this(context, NO_FORMATTER);

Methods Summary
public void	deleteAll() Deletes all tracker entries mContext.getContentResolver().delete(TrackerProvider.CONTENT_URI, null, null);
public java.lang.String	getNextOutput(android.database.Cursor cursor) Helper method which converts row referenced by given cursor to a string output param cursor return CharSequence output, null if given cursor is invalid or no more data if (cursor == null || cursor.isAfterLast()) { return null; } String output = mFormatter.getOutput(TrackerEntry.createEntry(cursor)); cursor.moveToNext(); return output;
public java.lang.String	getOutputFooter() Returns the output footer particular to the associated formatter return mFormatter.getFooter();
public java.lang.String	getOutputHeader() Returns the output header particular to the associated formatter return mFormatter.getHeader();
public android.database.Cursor	query(java.lang.String tag, int limit) Query tracker data, filtering by given tag param tag return Cursor to data String selection = (tag == null ? null : TrackerEntry.TAG + "=?"); String[] selectionArgs = (tag == null ? null : new String[] {tag}); Cursor cursor = mContext.getContentResolver().query( TrackerProvider.CONTENT_URI, TrackerEntry.ATTRIBUTES, selection, selectionArgs, null); if (cursor == null) { return cursor; } int pos = (cursor.getCount() < limit ? 0 : cursor.getCount() - limit); cursor.moveToPosition(pos); return cursor;
public android.database.Cursor	query(int limit) Retrieves a cursor that starts at the last limit rows param limit return a cursor, null if bad things happened return query(null, limit);
public android.database.Cursor	query(java.lang.String tag) Query tracker data, filtering by given tag. mo limit to number of rows returned param tag return Cursor to data return query(tag, Integer.MAX_VALUE);
void	writeEntry(TrackerEntry entry) insert given TrackerEntry into content provider mContext.getContentResolver().insert(TrackerProvider.CONTENT_URI, entry.getAsContentValues());
public void	writeEntry(android.location.Location loc, float distFromNetLoc) insert given location into tracker data writeEntry(TrackerEntry.createEntry(loc, distFromNetLoc));
public void	writeEntry(java.lang.String tag, java.lang.String logMsg) insert given log message into tracker data writeEntry(TrackerEntry.createEntry(tag, logMsg));