android - Bad Quality on Camera Preview -


i making android app using camera api. having trouble picture preview (after picture has been taken). issues are: 1) quality of image poor , blurred 2) rotation of picture 270 degrees rotated. 3) picture preview without zoom if zoom in live preview.

please me these problems. need save pictures sd card. how should it?

my source preview is:

public static bitmap decodestrem(file fil, uri selectedimage,                                      context mcontext) {          bitmap bitmap = null;         try {              bitmap = bitmapfactory.decodestream(mcontext.getcontentresolver()                     .openinputstream(selectedimage));              final int thumbnail_size = getthumbsize(bitmap);              bitmap = bitmap.createscaledbitmap(bitmap, thumbnail_size,                     thumbnail_size, false);              bytearrayoutputstream baos = new bytearrayoutputstream();             bitmap.compress(bitmap.compressformat.jpeg, 100, baos);             bitmap = bitmapfactory.decodestream(new bytearrayinputstream(baos                     .tobytearray()));              return bitmap = rotateimage(bitmap, fil.getabsolutepath());          } catch (exception e) {             e.printstacktrace();         }         return bitmap;     }     public static bitmap rotateimages(bitmap bmp, string imageurl) {         if (bmp != null) {             exifinterface ei;             int orientation = 0;             try {                 ei = new exifinterface(imageurl);                 orientation = ei.getattributeint(exifinterface.tag_orientation,                         exifinterface.orientation_normal);              } catch (ioexception e) {                 e.printstacktrace();             }             int bmpwidth = bmp.getwidth();             int bmpheight = bmp.getheight();             matrix matrix = new matrix();             switch (orientation) {                 case exifinterface.orientation_undefined:                     matrix.postrotate(90);                     break;                 case exifinterface.orientation_rotate_90:                     matrix.postrotate(90);                     break;                 case exifinterface.orientation_rotate_180:                     matrix.postrotate(180);                     break;                 case exifinterface.orientation_rotate_270:                     matrix.postrotate(270);                     break;                 default:                     break;             }             bitmap resizedbitmap = bitmap.createbitmap(bmp, 0, 0, bmpwidth,                     bmpheight, matrix, true);             return resizedbitmap;         } else {             return bmp;         }     }      public static bitmap decodefile(file f, int sampling) {         try {             bitmapfactory.options o2 = new bitmapfactory.options();             o2.injustdecodebounds = true;             bitmapfactory.decodestream(                     new fileinputstream(f.getabsolutepath()), null, o2);              o2.insamplesize = sampling;             o2.intempstorage = new byte[48 * 1024];              o2.injustdecodebounds = false;             bitmap bitmap = bitmapfactory.decodestream(                     new fileinputstream(f.getabsolutepath()), null, o2);             bytearrayoutputstream baos = new bytearrayoutputstream();             bitmap.compress(bitmap.compressformat.jpeg, 100, baos);             bitmap = rotateimage(bitmap, f.getabsolutepath());             return bitmap;          } catch (filenotfoundexception e) {             e.printstacktrace();         } catch (outofmemoryerror e) {             e.printstacktrace();         }         return null;     }      public static bitmap rotateimage(bitmap bmp, string imageurl) {         if (bmp != null) {             exifinterface ei;             int orientation = 0;             try {                 ei = new exifinterface(imageurl);                 orientation = ei.getattributeint(exifinterface.tag_orientation,                         exifinterface.orientation_normal);              } catch (ioexception e) {                 e.printstacktrace();             }             int bmpwidth = bmp.getwidth();             int bmpheight = bmp.getheight();             matrix matrix = new matrix();             switch (orientation) {                 case exifinterface.orientation_undefined:                     matrix.postrotate(90);                     break;                 case exifinterface.orientation_rotate_90:                     matrix.postrotate(90);                     break;                 case exifinterface.orientation_rotate_180:                     matrix.postrotate(180);                     break;                 case exifinterface.orientation_rotate_270:                     matrix.postrotate(270);                     break;                 default:                     break;             }             bitmap resizedbitmap = bitmap.createbitmap(bmp, 0, 0, bmpwidth,                     bmpheight, matrix, true);             return resizedbitmap;         } else {             return bmp;         }     }      public static int getthumbsize(bitmap bitmap) {          int thumbnail_size = 250;         if (bitmap.getwidth() < 300) {             thumbnail_size = 250;         } else if (bitmap.getwidth() < 600) {             thumbnail_size = 500;         } else if (bitmap.getwidth() < 1000) {             thumbnail_size = 750;         } else if (bitmap.getwidth() < 2000) {             thumbnail_size = 1500;         } else if (bitmap.getwidth() < 4000) {             thumbnail_size = 2000;         } else if (bitmap.getwidth() > 4000) {             thumbnail_size = 2000;         }         return thumbnail_size;     }


Comments

Post a Comment

Popular posts from this blog

ubuntu - PHP script to find files of certain extensions in a directory, returns populated array when run in browser, but empty array when run from terminal -

i running os ububtu 16.04. ultimate goal able run php script cron job every minute. here php script located @ /var/www/html/tests/test/index.php : <?php $directorypath = $_server['document_root']."/tests/test/data/"; echo "directorypath: $directorypath<br><br>";//check $imagefilepathsarray = glob($directorypath . "*.{png,gif}", glob_brace); echo "<br><br>imagefilepathsarray: "; print_r($imagefilepathsarray);//check ?> when open php script in browser visiting url my-ip-address/tests/test/index.php , get: directorypath: /var/www/html/tests/test/data/ imagefilepathsarray:array( [0] => /var/www/html/tests/test/data/pic.png [1] => /var/www/html/tests/test/data/pic.gif ) before writing cron job in crontab file, need check if can run anywhere using terminal . opened ubuntu terminal @ /home/ location, , executed in terminal: sudo php /var/www/html/tests/test/index.php i got following out...
Read more

php - How can i create a user dashboard -

today have questions you, want create user dashboard site, include (obviously), users data, example -email -username -and others stuff how can information, , print them in html page? if can, how can these information via php sessions? shuld use session? example, if user login, , start new session ( session_start() ), how can data print in dashboard? should use php "project"? in advice, have day , thank time!
Read more

javascript - How to detect toggling of the fullscreen-toolbar in jQuery Mobile? -

i have jquery mobile page fixed full-screen toolbar, data-tap-toggle enabled. straight under toolbar have positioned banner should slide upwards when toolbar hiding , slide downward when toolbar showing. jquery mobile toggles toolbar applying , removing ui-fixed-hidden class - sadly, can't find in documentation of toolbar widget toggle , hide or show event that. how can detect when toolbar toggled, reposition banner? .banner { position: fixed; background-color: darkseagreen; top: 46px; min-height: 48px; width: 100%; text-align: center; line-height: 48px; } <!doctype html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"> <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css"> <script src="https://code.jquery.com/jquery-1....
Read more