Sto cercando di tracciare un marcatore sulla metodo alfanumerico singolo in Android. quando disegno il marcatore, si disegna ma ci vorrà più tempo per disegnare i 30-40 millisecondi, a volte ci vogliono 2-3 secondi. Ecco il mio codice per la classe in cui ho il metodo draw.Come disegnare bitmap velocemente in OnDraw() metodo in tela Android
public class MyItemizedOverlay extends ItemizedOverlay<OverlayItem> {
private ArrayList<OverlayItem> overlayItemList = new ArrayList<OverlayItem>();
public MyItemizedOverlay(Drawable pDefaultMarker,
ResourceProxy pResourceProxy) {
super(pDefaultMarker, pResourceProxy);
}
@Override
public void draw(Canvas canvas, MapView mapView, boolean arg2) {
super.draw(canvas, mapView, arg2);
// ---translate the GeoPoint to screen pixels---
Point screenPts = new Point();
mapView.getProjection().toPixels(p, screenPts);
// ---add the marker---
Bitmap bmp = BitmapFactory.decodeResource(getResources(),
R.drawable.pin_annotation_darkblue);
Bitmap bmp1 = BitmapFactory.decodeResource(getResources(),
R.drawable.pin_annotation_green);
Bitmap bmp2 = BitmapFactory.decodeResource(getResources(),
R.drawable.pin_annotation_bue);
Bitmap bmp3 = BitmapFactory.decodeResource(getResources(),
R.drawable.pin_annotation_light);
Bitmap bmp4 = BitmapFactory.decodeResource(getResources(),
R.drawable.pin_annotation_light);
Bitmap bmp5 = BitmapFactory.decodeResource(getResources(),
R.drawable.pin_annotation_light);
Bitmap bmp6 = BitmapFactory.decodeResource(getResources(),
R.drawable.pin_annotation_light);
if (count == 1) {
int caller = getIntent().getIntExtra("button", 0);
switch (caller) {
case R.id.btMap:
canvas.drawBitmap(bmp, screenPts.x, screenPts.y - 50, null);
bmp.recycle();
break;
case R.id.imageButton1:
canvas.drawBitmap(bmp1, screenPts.x, screenPts.y - 50, null);
bmp1.recycle();
break;
case R.id.imageButton2:
canvas.drawBitmap(bmp2, screenPts.x, screenPts.y - 50, null);
bmp2.recycle();
break;
case R.id.imageButton3:
canvas.drawBitmap(bmp3, screenPts.x, screenPts.y - 50, null);
bmp3.recycle();
break;
case R.id.imageButton4:
canvas.drawBitmap(bmp4, screenPts.x, screenPts.y - 50, null);
bmp4.recycle();
break;
case R.id.imageButton5:
canvas.drawBitmap(bmp5, screenPts.x, screenPts.y - 50, null);
bmp5.recycle();
break;
case R.id.imageButton6:
canvas.drawBitmap(bmp6, screenPts.x, screenPts.y - 50, null);
bmp6.recycle();
break;
}
}
// Bitmap bmp = BitmapFactory.decodeResource(getResources(),
// R.drawable.pin_annotation_green);
// if (count == 1) {
// canvas.drawBitmap(bmp, screenPts.x, screenPts.y - 50, null);
// }
}
ci permetta [continua questa discussione in chat] (http://chat.stackoverflow.com/rooms/40102/discussion-between-gaurav-kumar-and-yushulx) –
Grazie per aver condiviso il codice. Ma non penso che tu abbia bisogno dell'interruttore nel primo esempio. Basta fare questo: 'int caller = getIntent(). GetIntExtra (" button ", 0); Bitmap bmp = mStore.get (chiamante); canvas.drawBitmap (bmp, screenPts.x, screenPts.y - 50, null); bmp.recycle(); bmp = null; interruzione; } ' –