[android-developers] Re: Slow scrolling in Date/TimePicker using Holo theme
Hi Dirk,
I had the same problem (noticed it yesterday, too, coincidentally!).
The issue is that the ScrollView is intercepting and stealing the
touch events once your finger moves outside of the Date/Time Picker
controls.
To work around this, I created sub classes of Date/TimePicker which
prevent the parent from stealing events after the initial touch down
(see below). If you use those in your layout XML instead, you should
find the problem goes away.
Hope that is useful!
Matt.
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewParent;
import android.widget.DatePicker;
public class CustomDatePicker extends DatePicker
{
public CustomDatePicker(Context context, AttributeSet attrs, int
defStyle)
{
super(context, attrs, defStyle);
}
public CustomDatePicker(Context context, AttributeSet attrs)
{
super(context, attrs);
}
public CustomDatePicker(Context context)
{
super(context);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev)
{
/* Prevent parent controls from stealing our events once we've
gotten a touch down */
if (ev.getActionMasked() == MotionEvent.ACTION_DOWN)
{
ViewParent p = getParent();
if (p != null)
p.requestDisallowInterceptTouchEvent(true);
}
return false;
}
}
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[android-developers] Partial invalidation in custom Android view with hardware acceleration
Hi, I've got a custom View in my application which fills the entire activity. In most cases, when I want to refresh the control I call invalidate() without any parameters. However, in certain circumstances, where I'm only changing a small area of the control, I call invalidate(Rect) to avoid redrawing the entire screen. This is important because in these situations I need the update to be as fast as possible. This seems to work fine, however, when I enable hardware acceleration in Honeycomb (i.e. set android:hardwareAccelerated=truein AndroidManifest.xml), the partial redraw does not seem to work. This can be seen if I do Log.d(FOO, canvas.getClipBounds()) in my onDraw() method; the output simply shows that the whole control is being updated, whereas with hardware acceleration disabled, I get the correct region being output. Is there any way to make partial invalidation work when using hardware acceleraton? Many thanks, Matt -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Trying to load a list of overlay positions from file
**facepalm** yeh i had my lat and longitude mixed up, thanks On Fri, Apr 15, 2011 at 8:16 PM, TreKing treking...@gmail.com wrote: On Thu, Apr 14, 2011 at 2:49 PM, matt h matt...@gmail.com wrote: Hi, I am trying to develop an app to list the bus stops for my local Public Transit buses on a google map map, It's not Chicago is it!? =P Any one have any idea why my markers are not being added? Tip: when stuff doesn't show on the map, try zooming all the way out in case you've plotted it wrong Walk with me here ... This is your format, right?:-79261518440062802511YRT And this is your parsing, right?: LineSplit[0]),Integer.parseInt(LineSplit[1]) ... And this is your function, right?: AddOverlayItem(int intLat, int intLong ... So -79261518 is latitude, 44006280 is the longitude right? And this becomes -79.261518 and 44.006280, right? Is this a transit system for Penguinshttp://maps.google.com/maps?f=qsource=s_qhl=engeocode=q=-79.261518,+44.006280aq=sll=41.896758,-87.643616sspn=0.013928,0.02032ie=UTF8ll=-84.267172,41.484375spn=169.144106,305.859375z=1 ? Or for Duckshttp://maps.google.com/maps?f=qsource=s_qhl=engeocode=q=44.006280,+-79.261518aq=sll=-84.267172,41.484375sspn=169.144106,305.859375ie=UTF8ll=44.292401,-80.244141spn=13.775603,20.808105z=6 ? - TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago transit tracking app for Android-powered devices -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Trying to load a list of overlay positions from file
what do you mean one overlay per bus line? what my app is doing is it lists all bus stops in my area, then when i tap a marker it will open the web browser and display the times the bus comes at for that stop. Eventually I will parse the web page and display the times within the dialog that pops up when the marker is clicked. On Fri, Apr 15, 2011 at 9:04 PM, lbendlin l...@bendlin.us wrote: Why are you creating a new overlay for each marker? To stay with your story, one overlay per bus line would make much more sense. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Trying to load a list of overlay positions from file
Hi, I am trying to develop an app to list the bus stops for my local Public
Transit buses on a google map map,
but i seem to be having problem loading the overlay markers locations from a
text file
Heres the code i use to load a new overlay onto the mapview:
[CODE]
public void AddOverlayItem(int intLat, int intLong, String
strStop,String strType) {
Toast.makeText(HelloGoogleMaps.this.getBaseContext(), intLat + , +
intLong + , + strStop + , + strType,Toast.LENGTH_SHORT).show();
// TODO Auto-generated method stub
ListOverlay mapOverlays = mapView.getOverlays();
Drawable drawable = this.getResources().getDrawable(R.drawable.viva);
if (YRT.equals(strType)) {
drawable = this.getResources().getDrawable(R.drawable.yrt);
}
HelloItemizedOverlay itemizedoverlay = new
HelloItemizedOverlay(drawable,this);
GeoPoint point = new GeoPoint(intLat,intLong);
OverlayItem overlayitem = new OverlayItem(point, strStop, strType);
itemizedoverlay.addOverlay(overlayitem);
mapOverlays.add(itemizedoverlay);
}
[/CODE]
When i call the above code from a button i click from within my app all
works fine, settings get saved and marker appears on screen:
[CODE]
WriteSettings(HelloGoogleMaps.this,String.valueOf((int)(longitude*1E6))
+ +
String.valueOf((int)(latitude*1E6)) + +
etStop.getText().toString() + +
YRT);
AddOverlayItem((int)(latitude*1E6),(int)(longitude*1E6),
etStop.getText().toString(),YRT);
[/CODE]
But the problem i am having is when i call the following code at the end of
the onCreate method, my overlays do not appear:
[CODE]
public void RefreshStops() {
// Refreshes the list of bus stop's
//Find the directory for the SD Card using the API
//*Don't* hardcode /sdcard
File sdcard = Environment.getExternalStorageDirectory();
//Get the text file
File file = new File(sdcard,LocFile);
try {
BufferedReader br = new BufferedReader(new FileReader(file));
String line;
while ((line = br.readLine()) != null) {
String LineSplit[] = line.split();
AddOverlayItem(Integer.parseInt(LineSplit[0]),Integer.parseInt(LineSplit[1]),LineSplit[2],
LineSplit[3]);
}
}
catch (IOException e) {
//You'll need to add proper error handling here
Toast.makeText(HelloGoogleMaps.this.getBaseContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
}
}
[/CODE]
Contents of file being read:
longitudelatitudestopnumberbus-service
[CODE]
cat BusLoc2.txt
-79261518440062802511YRT
-79161518440062803243YRT
-79161518440062806465YRT
-7916151844006280675YRT
[/CODE]
I know the AddOverlayItem() method is being called from the RefreshStops()
method because i have put a 'toast' in the AddOverlayItem() method for debug
purposes and can see the info being passed to it correctly but for some
reason they are not appearing??
Any one have any idea why my markers are not being added?
Thanks for any help
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