- Where Developers Learn, Share, & Build Careers


I'm trying to store a bitmap (which I've already read from a file) in a better shape After decoding BitmapFactory.Options.inSampleSize . The problem is that the file size of the stored bitmap is at least double the size of the original file. I have searched a lot and how can I find out how I can work with it, because I do not want to do it for memorable efficiency (I can reuse archived bitmap later) This is my way What I describe: 

  personal bitmap decodeFileToPreferredSize (filef) {bitmap b = empty; {// decode image size Log.i ("bitmap", "imported image size:" + f.length () + "bytes"); Bitmapfile Option o = new bitmapfile Option (); O.inJustDecodeBounds = True; BitmapfinderDiscoverFile (FAAA.S.O.O.O.O.L.O.T.), O); // Check that the user defined the custom image size int scale = 1; If (pref_height! = -1 & amp; pref_width! = -1) {if (o.outHeight> gt; pref_height || o.outwidth & gt; pref_width} {scale = (Math) Math.pow (2, (Int) Math. (Mathematics.log (pref_width / (double) math.max (oh oh, o overview)) / Math log (0.5));}} // point with dot bitmapfactor. O2 = new bitmapfactor option (); O2.in sample size = scale; b = bitmapfile.dicodefile (FAAAASO.O.O.O..T.), O2); String name = "image_" + system syntetime milliseus () + ".jpg"; File file = new file (environment .getExternalStorageDirectory (), name); FileOutputStream Out = New FileOutputStream (File); B.compress (bitmap.compress format.jpeg, 100, out); Out.close (); Logs. I ("bitmap", "exported image size:" + file.length () + "bytes"); } Hold (exception e) {b = null; } Return B; }   
  UPDATE  I have seen density on two image files. There is a 72 dpi density for the width and height of a person who came with the intention of the camera. The image file created with the above method has 96 dpi density for width and height. It shows that the size of a 0.5 MBIET image coming in the form of camera has changed to approximately 2.5 MBAT in my above method because the rescale factor is (96/72) * 2 ~ = 2.5 For some reason, I do not take the density of the vs. bitmap image which came from the camera. I tried to install the density with all the variations of the bitmapfactory. Option. Also I tried to change bitmap density with  bitmap.setDensity (int dpi);  But there is still no effect. Therefore, my new question is that there is a way to define bitmap density when the image is stored.  
 Thanks in advance.   
 
 
 I had a similar problem when I downloaded images from the web, Used more space on the SD when downloaded. I think the issue is that the Bitmapfactor saves images in any kind of non-friendly format.  
 My operation was to use a bitmapfactor instead:  
  try {try = is your input stream; // Consider reading the stream twice and going back to bitmap Os = youroutputstream; Byte data [] = new byte [4096]; integer number; Whereas ((count = is.read (data)) = -1) {os.write (data, 0, count); }} Hold (exception e) {e.printStackTrace (); } Finally {if (!! = Null) is {. } If (os! = Null) {os.close (); }}} Hold (IOException e) {e.printStackTrace (); }

Comments

Post a Comment

Popular posts from this blog

Python SQLAlchemy：AttributeError: Neither 'Column' object nor 'Comparator' object has an attribute 'schema' -

I tried to create a new database in my project, but when I run the script, I get this error, I have another project, this type of definition worked before, but now it gets a single error. I am using Python 2.7.8 and the version of SQLAlchemy module is 0.9.8. By the way, using a project flask- SQLAlchemy, it works well, I'm confused. Traceback information is as follows: Traceback (most recent call final): File "D: / Projects / IOM / db_create.py", line 4, & lt; Module & gt; From the models the base file "D: \ Projects \ OO-IM \ models.py", in line 15, in the & lt; Module & gt; Column ( 'followed_id', int (), ForeignKey ( 'user.id')) file "C: \ Python27 \ lib \ site-packages \ SQLAlchemy \ SQL \ schema.py", line 369, __new__ schema = metadata. Schema file "C: \ Python27 \ lib \ site-packages \ SQLAlchemy \ SQL \ elements.py", line 662, AttributeError in __getattr__ key): Neither 'column' object nor ...
Read more

java - How not to audit a join table and related entities using Hibernate Envers? -

I use Eners to be hibernate to audit my institutions. I have an audit entity, Foo , which includes a list & lt; Bars & gt; However, I do not want to audit the bar institutions, in the form of properties, I have written that: @inti @edicated public class Foo {@JoinTable (name = "T_FOO_BAR", joinColumns = @JoinColumn (name = "FOO_ID"), inverseJoinColumns = @JoinColumn (Name = "BAR_ID")) @ManyToMany (Cascade = Persist) @ Indited (targetAuditMode = RelationTargetAuditMode.NOT_AUDITED ) Public listing & lt; Bars & gt; GetBars () {Return bars; }} Now, I want to retrieve an amendment of foo : AuditReader reader = AuditReaderFactory.get (GetEntityManager ()); FU modification = (FU) reader.CreativeTeA () .entensEtrevision (Foo Class, 42) .getSingleResult (); Unfortunately, when I want to retrieve all the data (i.e. when it loads lazy times ), error me ORA-00942: table or view is not present , because Tried to query this: Sel...
Read more

mongodb - CakePHP paginator ignoring order, but only for certain values -

While pagging my user model in kppp, I can sort with some values, but not others. For example, I can order results from created or email , for example, but username or reputation seems to come back order by arbitrary command for example with a list of users: $ this-> paginate = array ('condition' => array ( 'User.is_active' = & gt; true), 'border' => 24, 'order' => array ('User.created' => DESC)); Works as expected, but $ this - & gt; Paged = array ('conditions' = & gt; array (' user.isIactive '= & gt; true),' border '= & gt; 24,' command '= & gt; array (' user repeats' = ' & Gt; DESC ')); No, no. I first thought that this could be a database issue, but when I search the database directly, sorted as expected. Note: I am using Mangodebi with the Mongo DB plugin of Ichikawa for the KPPHP; Pagnetizing users are used to work properl...
Read more