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2014/10/16 ¤W¤È 08:13:25
android Programming Glossary: f.getpathNullPointerException at openFileOutput in Activity http://stackoverflow.com/questions/10259421/nullpointerexception-at-openfileoutput-in-activity File f makeFilename getFilesDir name try FileOutputStream fos new FileOutputStream f append setFilePermissionsFromMode f.getPath mode 0 return fos catch FileNotFoundException e File parent f.getParentFile parent.mkdir FileUtils.setPermissions parent.getPath.. FileUtils.S_IRWXG FileUtils.S_IXOTH 1 1 FileOutputStream fos new FileOutputStream f append setFilePermissionsFromMode f.getPath mode 0 return fos So now the question is how can I make sure that the call to f.getParentFile will not return null and why..
Save internal file in my own internal folder in Android http://stackoverflow.com/questions/5766609/save-internal-file-in-my-own-internal-folder-in-android myfolder OutputStreamWriter out try File f new File mypath myfile.txt out new OutputStreamWriter openFileOutput f.getPath MODE_PRIVATE out.write test out.close Fourth Way File path getFilesDir OutputStreamWriter out try File f new File path.getPath.. OutputStreamWriter out try File f new File path.getPath myfolder myfile.txt out new OutputStreamWriter openFileOutput f.getPath MODE_PRIVATE out.write test out.close Fifth way File path getFilesDir OutputStreamWriter out try File f new File path.getCanonicalPath.. OutputStreamWriter out try File f new File path.getCanonicalPath myfile.txt out new OutputStreamWriter openFileOutput f.getPath MODE_PRIVATE out.write test out.close android share improve this question First Way You didn't create the directory...
Android post Base64 String to PHP http://stackoverflow.com/questions/9920967/android-post-base64-string-to-php it as an image on my server's hard drive like so File f new File savedImagePath Bitmap bitmap BitmapFactory.decodeFile f.getPath ByteArrayOutputStream stream new ByteArrayOutputStream bitmap.compress Bitmap.CompressFormat.JPEG 30 stream byte byte_arr..
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