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POWriting a bitmap to file in the sdcard
 

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    <p>I am trying to compress the bitmap into a jpg in my code. I get a nullpointer exception, Please advice</p> <pre><code>new Thread(new Runnable() { @Override public void run() { Cursor imageCursor=getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,new String[]{MediaStore.Video.Media.DATA},MediaStore.Video.Media.DISPLAY_NAME+"=?" ,new String[]{imageTitle},null); imageCursor.moveToFirst(); final String imageData=imageCursor.getString(imageCursor.getColumnIndex(MediaStore.Video.Media.DATA)); dbConnection connection=new dbConnection(getApplicationContext()); SQLiteDatabase db=connection.getWritableDatabase(); File imageFile=new File(imageData); File outputFile=new File("mnt/sdcard/Images/hiddenImage.jpg"); InputStream is; try { is = new FileInputStream(imageFile); InputStreamReader inputreader=new InputStreamReader(is); BufferedReader buffReader=new BufferedReader(inputreader); final ByteArrayBuffer buffer=new ByteArrayBuffer(512); int i; while((i=buffReader.read())!=-1) { buffer.append(i); } Bitmap imagefile=BitmapFactory.decodeByteArray(buffer.toByteArray(), 0, buffer.toByteArray().length); OutputStream os=new FileOutputStream("mnt/sdcard/Images/testing.jpg"); imagefile.compress(Bitmap.CompressFormat.JPEG, 100, os); os.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }).start(); </code></pre> <p>Here is the stack trace:</p> <pre><code>07-09 14:57:48.595: ERROR/AndroidRuntime(5761): FATAL EXCEPTION: Thread-9 07-09 14:57:48.595: ERROR/AndroidRuntime(5761): java.lang.NullPointerException 07-09 14:57:48.595: ERROR/AndroidRuntime(5761): at com.messageHider.viewImageThumb$1$1.run(viewImageThumb.java:106) 07-09 14:57:48.595: ERROR/AndroidRuntime(5761): at java.lang.Thread.run(Thread.java:1096) </code></pre> <p>The exception is thrown where I am trying to compress the bitmap: //::imagefile.compress(Bitmap.CompressFormat.JPEG, 100, os);</p>
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