android-image

I would like to create a list of about 200 ImageViews (random heights) with the following layout in a 'collage' fashion: Normally I would do this in a ListView for the peformance gained by using Adapters but since i want the images to be displayed in columns, and with different height (See picture Example ) depending on the pictures, I cannot use a single listview for this purpose. I have tried implementing this layout with: Three ListViews with synchronized scrolling = Slow Single ListView with each row containing three images = Not allowing different heights GridView = Not allowing different

Suppose I'm uploading two or more than two pics in some Framelayout . Hereby I'm uploading three pics with a same person in three different position in all those three pictures. Then what image processing libraries in Android or java or Native's are available to do something as shown in the pic. I would like to impose multiple pictures on each other. Something like these:- One idea is to : Do some layering in all those pictures and find mismatching areas in the pics and merge them. How one can merge multiple picture with other? By checking the di-similarity and merge with each other? Are there

In my application I want the user to be able to select some content of an Image contained inside an ImageView . To select the content I subclassed the ImageView class making it implement the OnTouchListener so to draw over it a rectangle with borders decided by the user. Here is an example of the result of the drawing (to have an idea of how it works you can think of it as when you click with the mouse on your desktop and drag the mouse): Now I need to determine which pixels of the Bitmap image correspond to the selected part. It's kind of easy to determine which are the points of the

I am trying to apply effect (sepia, brightness, bloom and other image effects if API for them is available) on an image for my android app. But I am totally unable to get precise and well mannered code or concept for solving such problem. Although Android 4.0 (API 14) have build in android.media.effect api in it but I am working in Android 2.1 which have only Bitmap, Drawable, DrawableBitmap e.t.c but i am not getting which to work with. I have written lots of image effects here, you can try: http://xjaphx.wordpress.com/learning/tutorials/ Note: the tutorials are meant to explain how image

In iOS preparing graphics is simple. There are either a normal image (height x width) or a retina image which is @2x (2 times height x 2 times width). However, since I'm new to Android, I see a ton of drawable-* folders in Eclipse where the * can be "hdpi" or "ldpi" or "mdpi" or "xhdpi" or "xxhdpi". Can someone very clearly and simply list for me what I must do to satisfy each of the display possibilities so my images will look right in each instance? I'm envisioning an answer will be a bullet list with each "*" listed and a sub-bullet list including the things that must be done. I'd also