How can I get Pixel color of a coordinate? There is no method like canvas.getColor(x,y).
Actually, I am new to game developement. I am developing a Game which will restrict object if it comes to that boundary like in pac-man. How can I check that object has reached upto the boundary?
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I'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?
View 2 Replies View RelatedBefore I submit this I just wanted to check it's not a java nuiance.
The Color class can be used to extract rgb values from a pixel (32 bit int).
I implemented a lookup table filter and used a byte to store each individual r g & b value to save a bit of space.
Long story short;
CODE:...........
137 is the magic number causing the error in my case, there may be more.
I'm using Android's android.graphics.Canvas class to draw a ring. My onDraw method clips the canvas to make a hole for the inner circle, and then draws the full outer circle over the hole:
clip = new Path();
clip.addRect(outerCircle, Path.Direction.CW);
clip.addOval(innerCircle, Path.Direction.CCW);
canvas.save();
canvas.clipPath(clip);
canvas.drawOval(outerCircle, lightGrey);
canvas.restore();
The result is a ring with a pretty, anti-aliased outer edge and a jagged, ugly inner edge:What can I do to antialias the inner edge?I don't want to cheat by drawing a grey circle in the middle because the dialog is slightly transparent. (This transparency isn't as subtle on on other backgrounds.)
I have some png files that I am applying a color to. The color changes depending on a user selection. I change the color via 3 RGB values set from another method. The png files are a random shape with full transparency outside the shape. I don't want to modify the transparency, only the RGB value. Currently, I'm setting the RGB values pixel by pixel (see code below).I've come to realize this is incredibly slow and possibly just not efficient enough do in an application. Is there a better way I could do this? Here is what I am currently doing. You can see that the pixel array is enormous for an image that takes up a decent part of the screen
View 1 Replies View RelatedI am working on a little side project (program for Android platform)and I don't exactly have a problem, but I don't really know where to start. The project I am working on has to do with getting the info and manipulating a pixel's RGB values inside an image. I know this is a very basic program (not going to disclose all the information about the project), but I am a beginning android programmer.
View 1 Replies View RelatedI want to get the color of one pixel of screen
View 2 Replies View RelatedI want each pixel on the screen to flash between red, blue, green, white, and black but independently of each other. Is this possible? I have been searching everywhere with out any luck. Any help on where to start would be greatly appreciated.
View 1 Replies View RelatedI might be completely off-base here, but I've spent the last two days trying to figure this out and, without success, you're my only hope.What I'm doing is simple:
* I have a canvas where I draw a circle with center on (10, 10), with radius = 5;
* Then, I obtain the canvas transformation matrix
* And then I create a new rectangle, I map it using the matrix and I use the canvas to draw it.
My problem: basically, the rectangle is being drawn in a different position along the Y-axis.I outputed the transformation matrix and, by default, it is translated by zero in the X-axis and by 25.0 in the Y-axis. Please note that I made NO transformations, either translate, scale or rotate. I am unable to understand why this is happening and how to avoid it.
I'm trying to replace a color for something that is drawn on a Canvas using AvoidXferMode.
From the android docs it looks like it's exactly what I need:
AvoidXfermode xfermode will draw the src everywhere except on top of the opColor or, depending on the Mode, draw only on top of the opColor.
What I'm trying is something like this:
CDE:.......
However, this just gives a red screen, not green as I would expect (replacing the red with green). I guess I'm missing the point some where...
I am creating an application which retrieves images from the web. In case the image cannot be retrieved another local image should be used.
While trying to execute the following lines:
CODE:................
The line if(drawable.equals(null)) throws an exception if drawable is null.
Does anyone know how should the value of drawable be checked in order not to throw an exception in case it is null and retrieve the local image (execute drawable = getRandomDrawable())?
I defined a white color in mycolors.xml under res/values as below:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="my_white">#ffffffff</color>
</resources>
In my code, I set the text color of a TextView as the white color I defined:
TextView myText = (TextView) findViewById(R.id.my_text);
myText.setTextColor(R.color.my_white);
But the text in the TextView turned out to be a black color. When I use @color/my_white in layout xml files, it works fine. I check the generate R.java, and see: public static final int my_white=0x7f070025;
I'm working on Android game and there are some problem appear I want to fill a color on bitmap object but can not I tried bitmap.setPixel but my Image is PNG format (like a circle or unsharp, surrounded with transparent color) and android can not getHeight() or getWidth(), ie.
View 1 Replies View RelatedI don't know where to put the bug report of APIs.
I use WebView to display some pages in my dictionary software. I met some problems with WebView.
1) could not handle the color values When I use the HTML code: <font color="#00FF00"></font> the WebView could not handle this type of tags. But <font color="red"></font> can work well.
This bug exist both in SDK1.0 & SDK1.1
2) Chinese Char: I use UTF-8 as the charset, and if there exist some Chinese chars, then this HTML code could not be displayed in WebView: <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head> <body> <p><font color="red">[-------- 美国 统词典[双解] --------]</font></p> </body> </html>
This bug exists in SDK1.1.
Why we have to setup a boundary string?What is the purpose for? any rules on it?
View 1 Replies View RelatedI am fighting with android hardware backbutton now my question to you is can i restrict its functionality upto 3 or 4 levels? right now for example, i have 1,2,3,4,5,6,7,8,9,10 activities i go to 1 then 2 then 3 .... upto 10 and start pressing backbutton it takes me to 9 then 8 then 7 upto end i want to keep track of only last three levels is this possible or not?
View 2 Replies View RelatedI thank HTC for trying to take Blackberry's notification LED and implementing on our Desire
However, I have yet to find it useful because the LED light (other than battery indication) stops functioning after few minutes for missed calls, text msgs
I was hoping once they update it to 2.2, they would fix this problem.
Is there ANY way to make the LED lights stay on until I check it?
Also, are there any apps that can change the color of the LED light?
Can anyone tell me what the desire is like for memory. i know that it takes a micro sd upto 32 gig but what can be saved on that is it just music ext or will the downloaded apps save to this also? what is the phone memory like im sorry im due upgrade and my choice is between this and the samsung galaxy s.
View 7 Replies View RelatedMy 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..
I want to do some automated testcase with Instrumentation . Suggest that my AUT has 2 Activity. After clicking the button in ther first Activity, the second one will be shown with new content base on what we enter in the first Activity.) Instrumentation provides us the function called startActivitySync() and return the Activity object for processing. My question is how we can get the pointer of the second Activity after the it is shown by clicking the button on the first activity.?
View 2 Replies View RelatedI would like to convert a Picture object to Bitmap object in memory, without writing data to disk.
View 2 Replies View RelatedI want to ask where does the defaults values of memory min-free values of a Rom reside? I mean what file I would have to edit to edit those values?
View 1 Replies View RelatedI have an Activity that running on system. I can get the Intent that is used to start the activity. But i don't know how to get the Activity object from the Intent object or something else. Can anyone tell me how to do this??? Note that, I don't use Instrumentation object.
View 11 Replies View RelatedI have a TextView inside a ScrollView and I have loaded it with a bunch of text. When the ScrollView gets to the bottom/top I would like to load the TextView with new data BUT there doesn't appear to be any way to find out when you have reached either location. Could some one help me out with this? How can this be done?
View 5 Replies View RelatedYesterday (which was the last day of the month), I got a message in the browser saying that I had reached my data limit. It would not load anything. It would still access data over Facebook, Twidroid and Sportstrack, but not the browser. Today, all is fine. So, was that message just in error, or does it sound as if I actually hit my limit? I heard around here that they were not really going to be monitoring the usage unless you were on the business plan. I suppose I could find out if I could see my total usage numbers, if I was around the 5 GB mark.
View 21 Replies View RelatedI am trying to get my environment setup to develop an android app so I downloaded the SDK(http://developer.android.com/sdk/installing.html). After unpacking the files and running the SDK Setup.exe, the Android SDK and AVD manager opens up.
During the installation process, I got an error stating the following: Failed to fetch URL https://dl-ssl.google.com/android/repository/repository.xml, reason: HTTPS SSL error. You might want to force download through HTTP in the settings.
So then I proceed to the SETTINGS tab and activated the check box which states: Force https://... sources to be fetched using http://
Then click save and apply. A box flashes on screen, which appears to be the previous box which showed the error, except this time, the progress bar races from 0 to 100% in about a second and then disappears. So clicking the FORCE option seemed to have worked for that issue.
Now, I click on the AVAILABLE PACKAGES tab which is where the Android manager actually downloads all the available resources including every "SDK Platform Android Vx.x" and every "Google API by Google Inc., API x, revision x"
There are green check marks in every check box indicating that I need to download every update.
SO I click INSTALL SELECTED.
The confirmation page comes up. Again, I click INSTALL ACCEPTED.
The INSTALLATION ARCHIVES box pops up and this is where I get stuck. I receive the following errors and I'm not sure what to do from here..
CODE:..................
I did some googling on "No buffer space available (maximum connections reached?)" and apparently it is a socket issue that typically occurs when a database query is called and there are a large number of TCP connections.
But beyond that I'm completely stuck. Can't find anything on my issue relating to Android SDK installation and I don't really know where to turn to continue with the SDK installation.
I have pretty much reached my limit on internal space, but while looks at my apps list on which to delete because I don't use I found only two. I was wondering what will happen if I clear data on the contacts storage i.e. will I loose my contacts, and with the facebook. Is there a way of clearing the data not uninstalling apps if so what data does it clear?
View 5 Replies View RelatedWhenever I try to attach a video I take with my Rezound they won't attach. I always get a message that says "cannot attach video. Message limit size has been reached ". The videos are the lowest resolution and only about 5 seconds.
View 5 Replies View RelatedI've got the following row xml file which consists of CheckboxView and TextView;
CODE:............
When the app run, i'm unable to "tick" any of the check boxes...
Facebook app has been acting up on my Droid since evening. I can get to mobile site but the app says "application request limit reached" and will not get data from FB.
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