bitmapfactory

I'm having some difficulty with regards to placing the contents of a Canvas into a Bitmap. When I attempt to do this, the file gets written with a file size of around 5.80KB but it appears to be completely empty (every pixel is '#000'). The canvas draws a series of interconnected lines that are formed by handwriting. Below is my onDraw for the View. (I'm aware that it's blocking the UI thread / bad practices/ etc.., however I just need to get it working) Thank you. @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); if (IsTouchDown) { //

If you have a Uri and you need the Bitmap , you could theoretically do this Bitmap troublinglyLargeBmp = MediaStore.Images.Media.getBitmap( State.mainActivity.getContentResolver(), theUri ); but it will crash every time, so you do this ......... BitmapFactory.Options options = new BitmapFactory.Options(); options.inSampleSize = 4; AssetFileDescriptor fileDescriptor =null; fileDescriptor = State.mainActivity.getContentResolver().openAssetFileDescriptor( theUri, "r"); Bitmap actuallyUsableBitmap = BitmapFactory.decodeFileDescriptor( fileDescriptor.getFileDescriptor(), null, options); Utils.Log("

I need to change background of the action bar to a customized image, but every time I try to use this code it does not change a thing. Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.navbarbg); BitmapDrawable bd = new BitmapDrawable(getResources(), b); bar.setBackgroundDrawable(bd); Also I tried this code but it didn't work. Resources res = getResources(); xpp =res.getXml(R.drawable.actionbar_background); bitmapDrawable = (BitmapDrawable) BitmapDrawable.createFromXml (res, xpp); The contents of actionbar_background.xml are <?xml version="1.0" encoding="utf-8"?> <bitmap xmlns

I have an image that is 120x120px located in my /res/drawable/ directory. This is the size required for all devices. To load this Bitmap, I am using the following: Bitmap tmpBmp = BitmapFactory.decodeResource(getResources(), R.drawable.myimage); The issue is that when I measure tmpBmp , the size is 360x360px. I know how to scale this back down to the 120x120 that I need, but it is a waste of processing time, although minimal. I am assuming that this has something to do with screen densities, since my resource is in a density-less directory. What is the reason for decodeResource scaling my

I'm developing an Android application, and it's view is containing multiple Gallerys. The content of the Gallerys (the Bitmaps) are red from the Internet. For the first gallery, everything works fine, but when trying to download the first image of the second Gallery, the BitmapFactory.decodeStream(InputStream) returns null, while the stream is NOT null. public void loadBitmap() throws IOException { for (int i = 0; i < images.size(); ++i) { URL ulrn = new URL(images.get(i).getThumbUrl()); HttpURLConnection con = (HttpURLConnection) ulrn.openConnection(); InputStream is = con.getInputStream();

I try to load a remote image from a server and thanks to a lot of code examples on stackoverflow I have a solution which works in 2 out of 3 images. I don't really know what the problem is with the third picture and sometimes when letting the code run in the debugger the picture is loading. Also if I load the problem picture first the other two pictures are sometimes not loaded. Here is the code: public static Drawable getPictureFromURL(Context ctx, String url, final int REQUIRED_SIZE) throws NullPointerException { //Decode image size BitmapFactory.Options o = new BitmapFactory.Options(); int

Hi I've been trying to write Numbers on Imageview. Images for N number of questions. If the user entered answer is correct, then it should be displayed with question number with tick mark image else question number with wrong mark image. I need to write the question number on the image. My code is here: LinearLayout l_layout = (LinearLayout) findViewById(R.id.linear_view_report); LayoutParams param = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1.0f); ImageView[] imgview=new ImageView[questions.length]; for(int i=0;i<no_of_questions;i++) { if