bitmapfactory

问题 Let's assume we have a worker thread which calls BitmapFactory.decodeStream with some connection stream, like this: Bitmap bitmap = BitmapFactory.decodeStream(new URL(imgUrl).openConnection().getInputStream(), null, someUnrelatedOptions); Now we need to terminate this thread immedietely in order to reclaim any memory that BitmapFactory has allocated. We can't wait for it to finish for too long, as the memory is required by UI thread. The example is simplified, so let's don't go into details

问题 In my interface, the user selects from a variable number of songs, and when a song is selected, I need to display the relevant background image. The user needs to keep control of the interface while the images are loading, and still be able to change song. The way I currently do this is using an AsyncTask. I am executing it using: if (LoadBG!=null&&!LoadBG.isCancelled()) LoadBG.cancel(false); LoadBG = new loadBG(); LoadBG.execute((Object) diff.BGPath); attempting to cancel the previous task

问题 I'm trying to decode a jpeg that is in CMYK color format. BitmapFactory returns null. I googled around but with no luck. Is it possibile Android team did not the right job supporting all kind of color format? I'm using Android 2.2. Thank you so much. 回答1: Found the solution: loading the JPEG using the external library libjpeg compiled with NDK. It has been a hard work, but I did it! 回答2: It's very possible I'd say: http://code.google.com/p/skia/issues/detail?id=69 来源： https://stackoverflow

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Bitmap byte-size after decoding? Is there anyway so I can get the size of this Bitmap?I've tried to use getByteCount() but I can't use it? Bitmap bitmap = BitmapFactory.decodeByteArray(decryptedData , 0, decryptedData .length); //decoding bytearrayoutputstream to bitmap Any suggestions? 回答1: As you can see from the API, you can use getWidth() getHeight() for the size of the Bitmap in pixels. And if it is an

问题 I have read 100s of article about the OOM problem. Most are in regard to large bitmaps. I am doing a mapping application where we download 256x256 weather overlay tiles. Most are totally transparent and very small. I just got a crash on a bitmap stream that was 442 Bytes long while calling BitmapFactory.decodeByteArray(....). The Exception states: java.lang.OutOfMemoryError: bitmap size exceeds VM budget(Heap Size=9415KB, Allocated=5192KB, Bitmap Size=23671KB) The code is: protected Bitmap

问题 I am developing an Android Application. I created a custom camera class to capture images. It is working fine in som many devices but when i Tried it with Samsung Galaxy S4 it returns image with gray lins as shown. My Code is : ![`*public void surfaceCreated(SurfaceHolder holder) { frontCam = SharedUserPrefs.getSharedPrefData(AutoCapture.this, Constants.IS_FRONT_CAMERA); if (frontCam.equals(Constants.VALUE_ON)) { for (int camIdx = 0; camIdx < Camera.getNumberOfCameras(); camIdx++) { Camera

问题 Many have asked this question before and got the right way to resolve it. but somehow its not working out for me. My app crashes when I try to choose a large image for display. I have tried to reduce the size by scaling it as well using BitmapFactory. This is not working. Please help. my code: public void browse(View v){ @SuppressWarnings("unused") int id = v.getId(); Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); intent.addCategory

问题 I read many discussions about the inSampleSize OutOfMemory dilemma. Cannot get a good solution so i ask a question about it. Im currently loading a bitmap with inSampleSize=4. That will give me a Bitmap with the size 648x388. Original On disk size is 2592x1592. Im writing text on 648x388 bitmap and saving it back to disk. Im writing on the 648x388 because the 2592x1592 give me OutOfMemory . The way it works is that there can be 1-10 648x388 Bitmaps to be saved in a while loop. I want to

问题 I'm having a bit of a problem with decodeStream returning null. It seems to be a fairly common problem around, but it's usually pinned down to one of two problems: An OutOfMemory exception thrown by attempting to load a large bitmap in it's entirety. Attempting to use the same input stream twice. However, I'm not doing either. The code to run it is simply stream = new java.net.URL(url).openStream(); Bitmap image = BitmapFactory.decodeStream(stream); stream.close(); with the URL set to here.

问题 We are trying a prototype using Google chart api. http://chart.apis.google.com/chart?chf=bg,s,000000&chxs=0,FFFFFF00,9.5&chxt=x&chs=500x300&cht=p3&chco=3072F3|FF9900|80C65A|990066&chd=t:50,5,5,40&chdl=50%C2%B0%20Apples|5%C2%B0%20Oranges|5%C2%B0%20Dates|40%C2%B0%20Strawberries&chdlp=b&chp=0.1 the problem is when we see the chart in the browser it displays the legend. but when we use the BitmapFactory to download the image to an ImageView or even SD card the Legend goes missing (this happens