Hi, Try reading this http://developer.android.com/training/basics/data-storage/files.html and this http://developer.android.com/reference/android/content/Context.html#openFileOutput(java.lang.String, int) in particular use -
- MODE_APPEND <http://developer.android.com/reference/android/content/Context.html#MODE_APPEND> - so you don't overwrite previous strings. Also your "logs" file will *not* be located in src/main/assets folder it will typically be in http://developer.android.com/reference/android/content/Context.html#getFilesDir() Regards On Friday, March 18, 2016 at 2:00:16 AM UTC+11, Jordan Ong wrote: > > I am new to android programming and I am trying to write strings into a > text file without overwriting the previous one. It is somehow like a > history log of the application. I tried reading online guide but it doesnt > seem to write in to my text file. Can anyone advice me on this? My empty > text file name logs is inside src/main/assets folder. Everytime the > saveText function is called, it successfully prompt the Toast that shows > the string of the saveText, so I wonder why it did not write into the logs > textfile. > > public void saveText(){ > int seconds; > FileOutputStream outputStream; > String saveText; > long elapsedMillis = SystemClock.elapsedRealtime() - > mChronometer.getBase(); > seconds = (int) (elapsedMillis / 1000); > try { > outputStream = openFileOutput("logs", Context.MODE_PRIVATE); > saveText = String.valueOf(seconds); > outputStream.write(saveText.getBytes()); > outputStream.close(); > Toast.makeText(this, saveText, Toast.LENGTH_LONG).show(); > > } catch (Throwable t){ > Toast.makeText(this, "Exception: " + t.toString(), > Toast.LENGTH_LONG).show(); > }} > > Android Manifest: > > <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> > > <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> > <application > android:allowBackup="true" > android:icon="@mipmap/ic_launcher" > android:label="@string/app_name" > android:supportsRtl="true" > android:theme="@style/AppTheme"> > <activity android:name=".MainActivity"> > <intent-filter> > <action android:name="android.intent.action.MAIN" /> > > <category android:name="android.intent.category.LAUNCHER" /> > </intent-filter> > </activity> > <activity android:name=".GameActivity" /> > <activity android:name=".EndActivity" /></application> > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/b5301764-321d-423a-b7e1-38d3a76e10a1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
