drawable

I have some image files in the drawable folder. And now, I want to convert them into opencv Mat object. I've found a function: Mat img = Highgui.imread(inFile); which is reading a file path to get the Mat. However, I can't get path of my images as I can only read them by using their id like R.drawable.img1. How could I achieve what I want? This should do Mat img = Utils.loadResource(context, refrenceimgID, Highgui.CV_LOAD_IMAGE_COLOR); Imgproc.cvtColor(img, gryimg, Imgproc.COLOR_RGB2BGRA); 来源： https://stackoverflow.com/questions/20184215/how-to-get-mat-with-a-drawable-input-in-android-using

I have a android library project and reusable drawable resources in it. Lets say package name is: com.vijay.mylib; Then i have a main project and it uses the above library project. Lets say its package name is: com.vijay.myproject . Consider that I have linked library project with my main project correctly. In my main project i have a layout called main.xml. I want to use some drawable rom library project in main.xml. How can i do it in xml? Refering in normal way like "@drawable/myImage" didn't work for me. The referece chooser windows shows me the drawables only from main project. Not from

Im trying to draw a smaller circle within another circle. It seems pretty simple but Im having trouble with this and couldnt find an answer. The code im using is: ShapeDrawable biggerCircle= new ShapeDrawable( new OvalShape()); biggerCircle.setIntrinsicHeight( 60 ); biggerCircle.setIntrinsicWidth( 60); biggerCircle.setBounds(new Rect(0, 0, 60, 60)); biggerCircle.getPaint().setColor(Color.BLUE); ShapeDrawable smallerCircle= new ShapeDrawable( new OvalShape()); smallerCircle.setIntrinsicHeight( 10 ); smallerCircle.setIntrinsicWidth( 10); smallerCircle.setBounds(new Rect(0, 0, 10, 10));

How can I define an easily reusable base shape (or gradient, or corners) in XML? I have a dozen or so drawable gradients that will be the same other than the start and end colors. I was hoping to define the identical stuff somewhere else and have an XML file for each different gradient that only defined the start and end colors. Is that possible? This is the base: <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <gradient xmlns:android="http://schemas.android.com/apk/res/android" android:type="linear" android

This question is linked with the answers in the following question: Error removing Bitmaps[Android] Is there any advantage of using Drawable over Bitmap in Android in terms of memory de-allocation ? I was looking at Romain Guy project Shelves and he uses SoftReference for images caches but I'm unable to search where is the code which is de-allocating these Drawables when SoftReference automatically reclaims the memory for Bitmap. As far as I know .recycle() has to be explicitly called on the Bitmap for it to be de-allocated. In my understanding, Bitmaps are typically better for performance if

I'm a bit confused as to what resolutions I should be saving my images in for the different drawable folders. Is there a general formula for it? For example,if I want an image to take up 10% of the height and the full width of the screen, roughly how would I calculate what different resolutions I should save the image in? This is android's guidelines for icons. Obviously not all drawables are icons, but maybe this helps you get started. 36x36 for low-density 48x48 for medium-density 72x72 for high-density 96x96 for extra high-density From here: http://developer.android.com/guide/practices