/**
* Set tiles to use. Set to null at finish.
*
* @param xtiles
* @param ytiles
*/
public void setTiles(TileMap tiles) {
if (null == tiles) {
if (null != mTileDrawTask) {
if (!mTileDrawTask.getStatus().equals(AsyncTask.Status.FINISHED)) {
/*
* Always honor the latest query
*/
mTileDrawTask.cancel(true);
}
}
} else {
tiles.setOrientation();
}
mTiles = tiles;
}
/** @param force */
private void dbquery(boolean force) {
if (mService == null) {
return;
}
if (mImageDataSource == null) {
return;
}
if (!mImageDataSource.isOpen()) {
return;
}
if (null == mTiles) {
return;
}
if (!force) {
double offsets[] = new double[2];
double p[] = new double[2];
if (mImageDataSource.isWithin(
mGpsParams.getLongitude(), mGpsParams.getLatitude(), offsets, p)) {
/*
* We are within same tile no need for query.
*/
mMovement = new Movement(offsets, p);
postInvalidate();
return;
}
}
/*
* Do not overwhelm.
*/
if (null != mTileDrawTask) {
if (!mTileDrawTask.getStatus().equals(AsyncTask.Status.FINISHED)) {
/*
* Always honor the latest query
*/
mTileDrawTask.cancel(true);
}
}
mTileDrawTask = new TileDrawTask();
mTileDrawTask.execute(mGpsParams.getLongitude(), mGpsParams.getLatitude());
}
