Android :: How Google Map Draw On Canvas In Droid
Sep 16, 2010Can anybody tell me or send me some links if there is any..which tells how Google map draw on canvas in android. what is the logic behind that.
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Android :: Reset Canvas - Draw A New Bitmap Into The Canvas
Jul 7, 2010My loadMap() method generate a canvas.throwIfRecycled exception when i try to load a new map.
When i start the game, the initial map loads and work fine though,
its only when i try to load a new map that i get the exception ..
How can i "reset" canvas and the bitmap i use to draw into, so i can startover fresh with them ?
here's what i use to create and draw my maps:
CODE:.........
So basicaly once i created and used picDest and canvas, i cannot figure how to reset it all for when i want to load a new map..
Android :: Method To Draw Bitmaps Faster On Droid Canvas / OpenGL?
Jun 15, 2010I currently have a game written using the Android canvas. It is completely 2D, and I draw bitmaps as sprites on the canvas, and it technically works, but I have a few features that I need to add that will require drawing many more bitmaps on the screen, and there will be a lot more movement.
The app needs more power.
What is the best way to go from this method of drawing Bitmaps on a canvas to using OpenGL so I can draw them faster?
Android :: Draw From Old Canvas
Oct 28, 2010I'm making an App that needs to be able to draw new graphics on top of the last set.
This is my current onDraw() method -
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.WHITE);
if(points.size() > 0) {
//do some stuff here - this is all working ok
canvas.drawLine(p1.x, p1.y, p2.x, p2.y, linePaint);
}
}
Basically, I need to draw the new graphics as a layer on top of the last, so what I'm looking for is a way to carry the image of the last canvas to the current. I have tried to figure it out myself using the canvas.setBitmap() method but it acts very funny.
Android :: Draw Text On Canvas?
Oct 28, 2010i'm trying to develop a simple pie chart class for android. For now, it can take a map of labels and values and draw the pie chart. I'm yet to add the legends for the pie, which is where i need to place the texts near small rectangles on the screen corner. Any help appreciated, since i'm new to Android dev.
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Sep 7, 2010My requirement is to draw a line on canvas for every second. I am able to draw the line but its clearing the previously drawn lines when I call myview.invalidate(). Now my question is how to draw a new line retaining all the previously drawn line on the same canvas.
View 5 Replies View RelatedAndroid :: Drawable Cannot Draw Into Canvas / What To Do?
May 26, 2009I want to load an icon from resource and draw over it. But I cannot get it into a canvas. Can anyone please help me with the code below. If I uncomment c.drawColor(), I get blue color as expected. So the problem is on icon.draw(). code...
View 2 Replies View RelatedAndroid :: Can I Draw Views On Canvas
Sep 28, 2010I want to load e.g. LinearLayout with some Buttons from XML and draw it on Canvas in a way that the Views behave normally (I can set onClick actions for the Buttons and when I press a Button, it changes it's background drawable). Can I do this?
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Jan 24, 2010I'm trying to draw a nine patch onto a Canvas object on the Android. What seems strange is that although I generated my nine patch using the draw9patch tool, the constructor for NinePatch requires an additional byte array called the "chunk" to construct the nine patch. Why isn't this simpler? What is the "chunk"? And if you have done this yourself, how did you go about it?
View 1 Replies View RelatedAndroid : Can I Draw Outside Bounds Of An Canvas
Oct 26, 2010I'm porting an app written in a graphics environment that allows drawing to happen outside the bounds of the clipping rectangle. Any way to do this in Android?
View 1 Replies View RelatedAndroid :: Using StaticLayout With Canvas To Draw Text
Feb 4, 2010I have figured out the static layout this far, but I have no idea how to make it display my text anywhere else but in the top left corner. StaticLayout layout = new StaticLayout(text, getTextPaint(), 140, android.text.Layout.Alignment.ALIGN_CENTER,(float)1.0, (float)0.0, true); layout.draw(canvas);
View 2 Replies View RelatedAndroid :: How To Increase FPS When Draw On Canvas - Now 20 - Desired 40-50
Jan 18, 2010First I want to say that I have read many articles on this subject in this forum and on some external resources(very helpful was Robert Green's diary at www.rbgrn.net and www.droidnova.com).
However, despite all of this I want to start topic regarding FPS, and ask for advice from experienced game developers on Android platform.
My main question is "How to improve FPS when draw on Canvas?"
I have implemented simple 2D arcade game skeleton for testing purpose. Now I have ~20 FPS and want to increase this value to 40-50 FPS, if this is possible of course. I know about Open GL ES, but so far I am interested in Canvas.
In every frame I draw following stuff on the screen: - Canvas.drawColor(Color.BLACK) - to clear the screen - 1 spaceship PNG 24x24 image 1.25 kb - 5 asteroids PNG 64x64 image ~8 kb each - from 1 to 30 bullets PNG 8x8 image 299 b - 4 30x30 Rectangles - to control objects on the screen
After running my app, in logcat I can see following output data: - Average FPS: 20 (Total frames drawn: 1945 in 97 seconds) - Average onDraw: 32 ms (clear canvas: 3, draw game stuff: 26, draw controls: 1) - Average updatePhysics: 1 ms
From this output I can assume, that my main problem here is "draw game stuff" wich includes: - draw 1 spaceship - draw 5 asteroids - draw from 1 to 30 bullets
Here is my code:........................
Android :: Draw Canvas Using Blur Effect?
Dec 30, 2009I need do draw on Android's Canvas using Blur effect, it is a very simple feature, I need to draw a circular area, which is blurred (the foreground) and the background transparent, I can do everything with manipulating the colour alpha to do it with custom transparency but I need it to be blurred instead of transparent..
View 1 Replies View RelatedAndroid :: Code To Draw Hands On Canvas?
Jun 28, 2010I want to draw hands on the canvas which is smooth and closed arc. How can I draw it? Any code regarding graphics or reference class to draw it will be helpful.
View 2 Replies View RelatedAndroid :: How To Draw Canvas In Respect Of Phone Orientation?
Oct 11, 2010There is no problem with portrait mode but when i try my app on landscape mode it doesn't look how it should.What is general approach to solve this problem.My first idea is replacing X and Y places.If i am on the right track how should i do this ? Should i use an if statement at the beginning of the onDraw() function and write entire same code twice (one for x,y and other is for y,x) ?
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Aug 7, 2010I am very new to android development and have been trying to draw a square comprised of multiple smaller rectangles of different colours... Like a Mosaic essentially. Basically at the moment I am reading values from a file which assigns the colour to the smaller Rects. I am using a pair of nested for loops to try to draw the small Rects sequentially, line by line. However when the program finishes there is only one small Rect drawn which is the last one to be drawn and its colour corresponds to the first value read from the file. Here is some of my code to show you what I mean:
public SnapshotDraw(Context context) {
super(context);
for(int a = 0; a < 63; a++){
for(int b = 0; b < 63; b++){
fileName = PREFIX + "2" + EXTENSION;..............
Android :: Draw A View On A Canvas By Giving X , Y Postion?
Sep 29, 2010How can i draw a view on a canvas by giving the x,y position in the canvas.
For example,
I have custom view myView, which was created by inflating one of my layout.xml file.
Now i want to draw this myView on the canvas at position (x, y).
How can i do that? code...
Android :: Draw And Scale A Bitmap On A Canvas Using Bicubic Interpolation
Mar 25, 2010I want to draw a bitmap on a canvas with bigger size than it is. I can use canvas.drawBitmap(bitmap, null, destRect, null); but that gives a poor quality, as the result is pixelated, if the source image is sightly smaller than the destination rectangle. How can i draw my bitmap using bilinear or bicubic resampling?
View 1 Replies View RelatedAndroid :: Draw Translucent Bitmaps Using Canvas Without Having To Resort To OpenGL?
Mar 17, 2010I have a Bitmap object and want to render it to a Canvas object with varying levels of translucency (i.e. make the whole bitmap partially see through). For example, I have sprites in a game (that are drawn over the top of a bitmap background) that I want to fade out from being opaque to being invisible. Can I do this without having to resort to OpenGL?
View 2 Replies View RelatedAndroid :: How To Draw Default Postion On Google Map In Droid
Oct 4, 2010Current the Google map display US as default.
I want to display India as default on the map.
How can i do this?
Android :: Draw Route On Google Map?
Jun 22, 2010I'm new to Android. and I parse a XML file from the following URL http://maps.google.com.tw/maps/api/directions/xml?origin=41.77732,-87. and I want to draw a route on Map, I found the information can help me to do this <polyline> <points>se~}FjtxuOKdEJ|JIpA</points> <levels>B??B</levels> </polyline> but how to use? help me, there are so many useless information when I search "Android polyline example" anyone can give me some short examples?
View 4 Replies View RelatedAndroid :: Want To Draw Line Or Path On Google Map In HelloMapView
Feb 1, 2010I'v been busy for a long long long time finding out how to draw a line between two (gps) points on the map in HelloMapView but with no luck.Could anyone please tell me how to do so.Suppose I use the HelloMapView which extends MapView. Do I need to use overlays? If so do I have to override the onDraw() method of the overlay and draw a line here? I actually tried these things but with no result.
View 5 Replies View RelatedAndroid :: Lines And Drawables Draw Order In Google Maps
Nov 11, 2010I'm writing an app that shows in google maps pipes and valves(lines and points). For that i've two classes.
One extends from ItemizedOverlay, and i add to map overlay one for each category of valve, and each one can have more than one item.
The second extends from Overlay, and in the draw method y draw the line with the method drawline of the canvas.
The problem i've is that the lines are drawn over the ItemizedOverlay items, no matter the order i add them to the mapView.getOverlays().
I want the lines on the bottom of all overlays. is there a way to do that.
Android :: Draw Route Path Draw Function
Sep 5, 2010In my android application I use this method in "draw" Overlay class for draw route on map. Can someone tell me if this method is good (in terms of performance) for route draw on map or I must to put code in Thread ??
I'm new to android.
public synchronized void draw(Canvas canvas, MapView mapView, boolean shadow) {
if (pointsAndTimes.isEmpty()) {
return;
}
Projection projection = mapView.getProjection();
Paint paint = new Paint();
paint.setARGB(250, 255, 0, 0);.............
Android :: Google Maps - MapView - Draw A Nice Flight Route Between 2 Points
Aug 1, 2010I wonder, how can I draw a nice flight route between 2 points on a google map's MapView? look at this: http://maps.forum.nu/gm_flight_path.html
View 6 Replies View RelatedSony Ericsson Xperia X10 :: Phone Draw Pad Failed And Google Account - System Update
Sep 11, 2010right so the bottom buttons were working fine, but the next day, the back button takes me to the home screen :S so if im on facebook, press the back button, instead of going to the previous page. and i also set up the draw thing to unlock it, but as it was raining a little it said i entered it wrong too many times and asked for the google mail thing... but i really have no rememberence of making one, which is so ******* annyoying.
the only way ive found out to solve this problem is doin a phone software update, however as my bottom right button is working properly, everytime i hold it down to plug the phones usb, the phone just starts normally, so basically i cannot do the system update.
Android :: Can't Add 3 Images In A Canvas In Droid / Way To Do
Mar 10, 2010I have 3 images that I want to add one after other on a canvas.
This is my code...
but this is not working.
Can someone please tell me what I am doing wrong here.
Android :: Composite Operations In Droid Canvas?
Mar 31, 2010I'm just starting with Android development and I'm coming from JavaScript/HTML world so I'm currently investigating the possibilities of the Android SDK.
The HTML 5 canvas supports composite operations (See here).
Is this possible in an Android Canvas? I scanned the API of the Canvas class but couldn't find anything useful. I need at least the composite operation "source-in" or (if this isn't possible) "source-atop".
Android :: Way To Get Pixel Values From Droid Canvas
Jul 9, 2010I'm currently writing an Android game using surfaceView. I've optimized the game as much as possible and it runs quite smoothly. However, I have collision detection incorporated which is a bit messy. I would like to do collision detection by reading pixels directly from the canvas. Is this possible to do? The closest to this that I have found was to attach a new bitmap to the canvas using setBitmap. Then when I drew to the canvas, the bitmap would be updated. Would this be the way to go?
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Nov 11, 2010How to move ball on particular angle in android canvas?
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