I need to put a flag waving animation as my Android background. The only way I found is creating number of images which shows each motion in waving and calling them.
Instead, is there a better way? Some languages got basic animation options like wave(), shake() etc, so is there any command in android so I can animate the image, without using number of images?
Or else, is there a way I can set a Flash animation (.swf) as the background?
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I'm trying to find a better way to create a scrolling background in android studio for a game I am making. I could just load the image twice and have them scroll side by side, but I am wondering if there is a better way to do it. The background needs to be moving at a constant rate, as the character never moves from the center of the screen. The movement of the background is completely independent from everything else.
Better way than
I could just load the image twice and have them scroll side by side
until they invented.
In this answer there is an example code.
I have a basic noob question which I'm sure many of you can easily answer.
I am finishing up a game I am making in java. It is a windowed game, and I am not using any flow layouts. In other words, I am placing the images and buttons myself using setbounds, etc. I want to port this game to android, where it will be full screen.
I have heard that I should use Eclipse or libgdx to do this. My question is, will my game still retain its dimensions on an android phone? Will it scale to a viewable size
or will I have to adjust everything on my game to make it fit?
I'm also wondering how difficult is it to port it.
Thanks for your help.
will my game still retain its dimensions on an android phone? Will it scale to a viewable size? Or will I have to adjust everything on my game to make it fit?
Yes. If you use a camera in libgdx (which you should!). It will scale everything to fit the screen, stretching it. But you can easily set it to keep aspect ratio and show black bars at the sides. For example this.
I'm wondering how difficult is it to port it.
The library is very easy to use, it depends on your current game design/implementation. But yeah, it must be very easy.
If you are not using libgdx at the moment it will be hard to port it to libgdx. May be a big part of your game has to be rewritten. But if you are allready using libgdx for the desktop version of your game you only have to handle the different input type (most times on android phones you use touch input instead of keyboard). If you are using libgdx but you are not using camera, you should definitly modify your game to use camera. By doing this you do not depend on screen aspect ration (One possible solution). Also you should then keep in mind, that on android the method pause() is called when call is incoming or homebutton is pressed and resume() is called when user returns to game. Hope this helps.
I'm trying to create a gauge/meter/dial animation as part of an application I'm trying to build.
What I'm trying to do is to display the acceleration values that I get via the the sensors on a gauge. Now I'm able to successfully get the values from the sensors but I don't know how to display them as an animated gauge/dial.
I've looked at the frame-by-frame and tweened animations, but they don't suit my needs, because I can't seem to use them to change the animation based on input from the code.
I should be able to display an image for the gauge and an image for the needle and then change the rotation of the needle image according to the values so as to make it look animated but I don't know how to do this.
Is there a way a do what I'm trying to do?
Is there a better/alternate way?
I'm using the standard Android SDK and eclipse and trying to support devices with android v2.2 upwards.
Hi Ayos Draw the background, a solid color is best, then draw you indicator in a different color (black). When you get a new value, test to see if its different and if it is draw the indicator in the background color (erase it). Then draw the new indicator. You will need to figure out a way of scaling your raw data and making it in to degrees to draw the indicator. Its best if your difference test allows you to not change the indicator if the change does not move the indicator less that a degree or two. If you use an image or pattern for the background then you have a big job in erasing the indicator. You might have to redraw the background every time, that takes a lot of processing time and the gauge may look jumpy. Cliff
Best reader,
I'm stuck on one of my concepts.
I'm making a program which classroom children can measure themselves with.
This is what the program includes;
- 1 webcam (only used for a simple webcam view.)
- 2 phidgets (don't mind these.)
So, this was my plan. I'll draw a rectangle on the webcamview and make it repaint itself constantly.
When the repainting is stopped by one of the phidgets, the rectangle's value will be returned in centimeters or meters.
I've already written the code of the rectangle that's repainting itself and this was my result:
(It's a roundRectangle, the lines are kind of hard to see in this image, sorry about that.)
As you can see, the background is now simply black.
I want to set the background of this JFrame as a webcam view (if possible) and then draw the
rectangle over the webcam view instead of the black background.
I've already looked into jmf, fmj and such but am getting errors even after checking my webcam path and adding the needed jar libraries. So I want to try other options.
So;
- I simply want to open my webcam, use it as background (yes live stream, if possible in some way).
And then draw this rectangle over it.
I'm thus wondering if this is possible, or if there's other options for me to achieve this.
Hope you understand my situation, and please ask if anything's unclear.
EDIT:
I got my camera to open now trough java. The running camera is of type "Process".
This is where I got the code for my camera to open: http://www.linglom.com/2007/06/06/how-to-run-command-line-or-execute-external-application-from-java/
I adjusted mine a little so it'll open my camera instead.
But now I'm wondering; is it possible to set a process as background of a JFrame?
Or can I somehow add the process to a JPanel and then add it to a JFrame?
I've tried several things without any succes.
My program as it is now, when I run it, opens the measuring frame and the camera view seperatly.
But the goal is to fuse them and make the repainting-rectangle paint over the camera view.
Help much appreciated!
I don't think it's a matter of setting a webcam stream as the background for your interface. More likely, you need to create a media player component, add it to your GUI, and then overlay your rectangles on top of that component.
As you probably know from searching for Java webcam solutions in Stack Overflow already, it's not easy, but hopefully the JMF Specs and API Guide will help you through it. The API guide is a PDF and has sections on receiving media streams, as well as sample code.
Currently I am developing an application for decoding barcodes using mobile phones.
I have a problem with how to draw a line or a square on the camera screen to easily capture the barcode.
What is the easiest way of doing it?
Unfortunately this isn't as easy as it sounds. If you have a preview image from a phone's camera then it's often rendered as an overlay. This means that the camera preview image doesn't actually form any part of your application's canvas and you can't interact directly with the pixels. The phone simply draws the preview on top of your appliction, completely out of your control.
If you draw a line on your screen, then it will be drawn underneath the preview image.
The way around this isn't too pretty. You need to actually capture an image from the camera. Unfortunately this means capturing a JPEG or a PNG file into a byte buffer. You then load this image using Image.createImage and render that to the screen. You can then safely draw on top of that.
This also has the undesirable downside of giving you an appalling frame-rate. You might want to enumerate all the possible file formats you can capture in and try them all to see which one is quickest.
You can do this by using OverlayControl, assumming that your target devices support it.
I think i remember seeing a good example # Sony Ericsson developer forums.
Edit: found this (does not involve use of OverlayControl)