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map: background loading

precision_debug
Georg Lukas 2011-04-12 20:14:19 +02:00
rodzic ea4a9e8b5b
commit 0d7919abdb
1 zmienionych plików z 47 dodań i 34 usunięć
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81
src/MapAct.scala
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@ -29,9 +29,6 @@ class MapAct extends MapActivity {
Benchmark("loadDb") {
staoverlay.loadDb(showObjects)
}
mapview.invalidate()
animateToCall()
//postlist.setSelection(0)
})
override def onCreate(savedInstanceState: Bundle) {
@ -40,7 +37,6 @@ class MapAct extends MapActivity {
mapview.setBuiltInZoomControls(true)
staoverlay.loadDb(showObjects)
animateToCall()
mapview.getOverlays().add(staoverlay)
// listen for new positions
@ -104,7 +100,11 @@ class StationOverlay(icons : Drawable, context : MapAct, db : StorageDatabase) e
val TAG = "StationOverlay"
//lazy val calls = new scala.collection.mutable.HashMap[String, Boolean]()
lazy val stations = new java.util.ArrayList[Station]()
var stations = new java.util.ArrayList[Station]()
// prevent android bug #11666
populate()
lazy val symbolSize = (context.getResources().getDisplayMetrics().density * 16).toInt
override def size() = stations.size()
@ -208,36 +208,9 @@ class StationOverlay(icons : Drawable, context : MapAct, db : StorageDatabase) e
}
def loadDb(showObjects : Boolean) {
stations.clear()
val filter = if (showObjects) null else "ORIGIN IS NULL"
val c = db.getPositions(filter, null, null)
c.moveToFirst()
var m = new ArrayBuffer[GeoPoint]()
while (!c.isAfterLast()) {
val call = c.getString(StorageDatabase.Position.COLUMN_CALL)
val lat = c.getInt(StorageDatabase.Position.COLUMN_LAT)
val lon = c.getInt(StorageDatabase.Position.COLUMN_LON)
val symbol = c.getString(StorageDatabase.Position.COLUMN_SYMBOL)
val comment = c.getString(StorageDatabase.Position.COLUMN_COMMENT)
val p = new GeoPoint(lat, lon)
m.add(p)
// peek at the next row
c.moveToNext()
val next_call = if (!c.isAfterLast()) c.getString(StorageDatabase.Position.COLUMN_CALL) else null
c.moveToPrevious()
if (next_call != call) {
//Log.d(TAG, "end of call: " + call + " " + next_call + " " + m.size())
addStation(new Station(m, p, call, comment, symbol))
m = new ArrayBuffer[GeoPoint]()
}
c.moveToNext()
}
c.close()
Log.d(TAG, "total %d items".format(size()))
setLastFocusedIndex(-1)
Benchmark("populate") { populate() }
context.mapview.invalidate()
context.animateToCall()
val qh = new QueryHandler()
qh.execute(filter)
}
def addStation(sta : Station) {
@ -253,4 +226,44 @@ class StationOverlay(icons : Drawable, context : MapAct, db : StorageDatabase) e
context.startActivity(new Intent(context, classOf[StationActivity]).putExtra("call", s.call));
true
}
class QueryHandler extends MyAsyncTask[Unit, ArrayList[Station]] {
override def doInBackground1(params : Array[String]) : ArrayList[Station] = {
val s = new ArrayList[Station]()
val c = db.getPositions(params(0), null, null)
Benchmark("getCount") { c.getCount() }
c.moveToFirst()
var m = new ArrayBuffer[GeoPoint]()
while (!c.isAfterLast()) {
val call = c.getString(StorageDatabase.Position.COLUMN_CALL)
val lat = c.getInt(StorageDatabase.Position.COLUMN_LAT)
val lon = c.getInt(StorageDatabase.Position.COLUMN_LON)
val symbol = c.getString(StorageDatabase.Position.COLUMN_SYMBOL)
val comment = c.getString(StorageDatabase.Position.COLUMN_COMMENT)
val p = new GeoPoint(lat, lon)
m.add(p)
// peek at the next row
c.moveToNext()
val next_call = if (!c.isAfterLast()) c.getString(StorageDatabase.Position.COLUMN_CALL) else null
c.moveToPrevious()
if (next_call != call) {
//Log.d(TAG, "end of call: " + call + " " + next_call + " " + m.size())
s.add(new Station(m, p, call, comment, symbol))
m = new ArrayBuffer[GeoPoint]()
}
c.moveToNext()
}
c.close()
Log.d(TAG, "total %d items".format(s.size()))
s
}
override def onPostExecute(s : ArrayList[Station]) {
stations = s
setLastFocusedIndex(-1)
Benchmark("populate") { populate() }
context.mapview.invalidate()
context.animateToCall()
}
}
}