drawable

The code is simple: <ImageView android:layout_width="fill_parent" android:layout_height="fill_parent" android:src="@drawable/cat"/> Notice the ImageView used fill_parent for width and height. The image cat is a small image and it will be zoomed in to fit the ImageView, and keep the width/height ratio at the same time. My question is how to get the displayed size of the image? I tried: imageView.getDrawable().getIntrinsicHeight() But which it the original height of the image cat . I tried: imageView.getDrawable().getBounds() But which returns Rect(0,0,0,0) . fsegaux the following will work: ih

I have the following code that will rotate a drawable by a set amount of degrees. public Drawable rotateDrawable(float angle, Context context) { Bitmap arrowBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.generic2rb); // Create blank bitmap of equal size Bitmap canvasBitmap = arrowBitmap.copy(Bitmap.Config.ARGB_8888, true); canvasBitmap.eraseColor(0x00000000); // Create canvas Canvas canvas = new Canvas(canvasBitmap); // Create rotation matrix Matrix rotateMatrix = new Matrix(); rotateMatrix.setRotate(angle, canvas.getWidth()/2, canvas.getHeight()/2); //Draw bitmap

I'm experimenting with Drawable backgrounds and have had no problems so far. I'm now trying to change the gradient background color at runtime. Unfortunately, there's no API to change it at runtime, it seems. Not even by trying to mutate() the drawable, as explained here: Drawable mutations The sample XML looks like this. It works, as expected. <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <gradient android:startColor="#330000FF" android:endColor="#110000FF" android:angle="90"/> </shape> Sadly, I want a list with various colors, and they'd have to

I have an image from the web in an ImageView . It is very small (a favicon) and I'd like to store it in my SQLite database. I can get a Drawable from mImageView.getDrawable() but then I don't know what to do next. I don't fully understand the Drawable class in Android. I know I can get a byte array from a Bitmap like: Bitmap defaultIcon = BitmapFactory.decodeStream(in); ByteArrayOutputStream stream = new ByteArrayOutputStream(); defaultIcon.compress(Bitmap.CompressFormat.JPEG, 100, stream); byte[] bitmapdata = stream.toByteArray(); But how do I get a byte array from a Drawable ? Cristian