drawable

I hope you can help me, I already researched my case but didn't found a good answer. I want to compare the content of a variable with the names of all existing resources (if possible only with drawable resources). The question in short: How to compare the String content of an variable with a list of all resource names, preferential only with drawable resources? Or in other words: How to get a list (containing Strings) of all resource names, preferential only drawable resources? The Case: I want to display a symbol based on a given type. This type is retrieved from a SQLite Database. There are

Is there a way to set the background image of a SurfaceView? Does it have to be done in xml or can I do it all in Java - I've got something that looks like this in my constructor: Drawable sky = (getResources().getDrawable(R.drawable.sky)); this.setBackgroundDrawable(sky); But it still doesn't show anything. You cannot set a background drawable on a SurfaceView. You'll have to draw the background onto the surface yourself. Try this public void surfaceCreated(SurfaceHolder arg0) { Bitmap background = BitmapFactory.decodeResource(getResources(), R.drawable.background); float scale = (float

For example, if each row in a list had a background that was a gradient, would it be better to use a image of a gradient or to define that gradient in a shape drawable in xml? Is there is significant performance difference between the two methods? I just asked a similar question and it sounded like that using an image drawable is more efficient computationally than using a vector.(but i'm not expert so don't quote me on that) It really depends on what your trying to set out to achieve in the first place. If you have completed creative assets that aren't going to change then it would make sense

Which is the meaning of the second parameter of Drawable.createFromStream() method? From Android APIs I only get: public static Drawable createFromStream (InputStream is, String srcName) Create a drawable from an inputstream In all examples I have read I see they use the string "src": is it the name of the directory where the drawable is cached, relative to my application's root dir? One parallel question: where am I supposed to find Android core sources (for example of Drawable.createFromStream() method...), to avoid such silly questions, in future? It's basically useless : Based on Froyo

XML file saved at res/drawable/gradient_box.xml: <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <gradient android:startColor="#FFFF0000" android:endColor="#80FF00FF" android:angle="45"/> <padding android:left="7dp" android:top="7dp" android:right="7dp" android:bottom="7dp" /> <corners android:radius="8dp" /> </shape> (The above shape definition is is taken from then Android developer guide. There's no errors in it.). Let's try to use it together with a TextView: <TextView android:layout_width="match_parent"

I know that changing the ImageView resource is not big deal just using myImageView.setImageResource(mynewImageDrawable) but what I want to do is to check the current ImageSource before changing it. basically, I want to implement my own group radio buttons using imageViews. so every time any imageView is clicked, the oncliked event method will change the Image Resources of my group. and sorry for my poor English. regards, redsea There is no getDrawableId function so you'll need to do something like set a tag for the ImageView when you change its drawable. For instance, set the drawable id as a