Android :: How To Delete A Named Preferences File In Droid?
Nov 5, 2010
I can create a new preferences file by calling Context.getSharedPreferences(String name, int mode), putting some values in the returned preferences' editor, and committing. However, I don't see an interface in the API to remove the created file when I no longer need it. I've tried Context.deleteFile(String name), passing in the same name argument from above, but that returns false, indicating the file wasn't actually deleted. I'm using MODE_PRIVATE, if that makes a difference. Browsing the source for context's implementation of the editor doesn't reveal any clues either, as far as I can tell. Any ideas? The background here is that I'm allowing my users to save copies of their "current" preferences so that they can restore previously saved settings. When they don't want those settings anymore, I want to remove the saved preferences file so it doesn't take up space. At the moment the best I can do is an edit().clear().commit on the file, which I believe will remove most of the contents. Not as good as delete, though.
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Sep 30, 2010
On my Vibrant, I created a file called .nomedia with a view to place a ringtone file in it so that the ringtone file would not show in the music player library. However it has had the effect of hiding ALL my media files from my phone - non are accessible. When I mount (to a Mac) I cannot see a file named .nomedia and so cannot delete it, but all my media files are there. How to I get rid of the .nomedia file i cannot see?
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Jun 23, 2010
My android application has two kinds of preferences:
1) I have user preferences defined in res/xml/preferences.xml so that users can manage their preferences with a PreferenceActivity.
2) I'd like to define another file for global configuration preferences of my app.
What is the best way to manage my app config preferences? Should I create another XML file with config values or should I specify those config values in strings.xml? What is the best practice for managing config preferences?
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Jun 17, 2010
Do anyone have a file in the root directory of your SD card named search.trace? I have one that is about 8.5 megs. I took a look at it but it didn't look like the entries were specific to a particular app. Looks like some system log. Anyone know if there would be a problem deleting it?
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Apr 29, 2010
I can't figure out exactly why this fails. The application has android.permission.WRITE_EXTERNAL_STORAGE permissions. I can create normal files with exactly the same name in the same location, but pipe creation fails. The pipe in question should be accessible from multiple applications. I suspect that noone can create pipes in /sdcard. Where would it be the best location to do so? What mode mast should I set (2nd parameter) Does application need any extra permissions?
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Nov 17, 2009
Trying to create shared preferences for my class representing my api and one for my main class. I create a shared preference file by making this call in my api & main classes String PREF_NAME = "API"; this.pref = context.getSharedPreferences( PREF_NAME, Context.MODE_PRIVATE );
the log gives me this....................
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Aug 3, 2010
I am planning to store a password in my Native app (Android and iPhone). Should I store them after encrypting it ? or can I store it without any encryption? Are they really secure?
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Apr 22, 2010
I am using a PreferenceActivity to let the user set some values. I am feeding it the xml file with the defined preferences.
I have set all the android:defaultValue="" for them.
When I start my application, I need the preferences, or if they are not set yet manually, I want the default values:
CODE:.................
However, when android:defaultValue="true" I still get false. So, it looks like the defaultValues set in the XML are not used anywhere but when initializing the preferences-screen.
I don't want to hardcode the default values in the getBoolean() method. So, is there a way get the default-values with only defining these in 1 place?
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Mar 19, 2010
My application is used on multiple platforms so it saves it preferences to a file (rather than to the standard Android SharedPreferences).
Is there any easy of reusing the PreferenceActivity to save preferences to a file or is it a case of creating a whole new activity to do the job? If the latter is the case is there a layout I can use that will make the activity look like the normal preferences screen? PreferenceActivity uses com.android.internal.R.layout.preference_list_content but this doesn't appear to be available to apps for reuse.
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May 19, 2010
How do you delete a downloaded PDF file?
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Sep 25, 2009
I have this problem. Two apps: app_a and service_s. Service_S creates file in /tmp. After create this file, service_s uses FileUtils.setPermission to change file mode to 666. Then app_a tries to delete this file. But I always failed when deleting. It seems the files are private. One application cannot delete files which another application creates. Is there any way to delete this file?
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Feb 8, 2010
I was preparing to overclock my droid but once i saw the news i decided to hold off, i got far enough to only copy the flash_image file to my rom and thats it, i would like to delete it and unroot, whats the simplest way?
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Jun 2, 2013
I deleted my hosts file on my droid RAZR Max. How to replace it or place a link for it so I can download it.
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Oct 13, 2010
Now I am slightly new to the android game. Had a D1 that I traded for and I loved it. Used Astro File manager on there to get swype when it was available. I hear about this app and how it is great and you need it. I have downloaded it and I am not really 100% positive on its purpose. Is it just an easy way to delete files? Are there files I shouldn't delete?
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Jul 18, 2010
New Moto Droid X here. I was having trouble updating my " my verizon " app today and kept getting the message installation error package was not signed correctly. i read to delete the app and reinstall, but after i found out that the ota update coming out tomorrow supposed to fix this but i already went in the sys file with astro and deleted the verizon apk and astro said it was successful. is this possible to delete factory apps with astro did i screw my phone up
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Mar 4, 2010
I apologize if this has already been asked and answered. Obviously I'm new here and not real sure how the search function goes.
Anyway, can I delete the 2.1 file off my SD card once it's installed on my phone? If so, what's the easiest way to do that.
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Dec 29, 2009
Most samples that I see appear to use an anonymous method in a call like button.setOnClickListener(). Instead, I'd like to pass in a method defined on the Activity class that I'm working in. What's the Java/Android equivalent of the following event handler wiring in C#?
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Nov 14, 2009
For some reason, many of my Apps and programs have been renamed: It now appears that most are back to normal, but the Meebo App I downloaded still has the funny/odd name, com.something. Is there any way to fix this?
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Aug 2, 2010
I am taking a lot of pictures on my Desire, but having them names IGM1 IMG 2 etc isn't very helpful. Is there any way of changing some settings so the phone automatically names the pictures with the date instead?
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Aug 8, 2009
I am creating a file to send as an attachment to an email. Now I want to delete the image after sending the email. Is there a way to delete the file? i have tried: myFile.delete();but it didn't delete the file.
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Apr 15, 2010
I would like some of my preferences to have icons, like the Settings app. I guess one way of doing this would be to copy all the relevant code and resources from the Settings app, but it seems like overkill for a couple of icons.
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Apr 12, 2010
May i please know how can i delete the content of the file in java?
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Aug 24, 2010
I have used the android internal storage to save a file for my application (using openFileOutput) but I would like to delete that file, is it possible and how?
thanks maxsap.
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Oct 14, 2010
I have a rooted desire, but I have a troublesome app that won't update and I can't delete. I have seen others who have had the same problem, and a solution is to rename the app .apk.old and then redownload it, but I can't find a decent app to do this. I do have superuser permissions.
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Feb 4, 2010
We are starting the e-mail intent of the user's choice (createChooser) and sending a zip file. This zip file is created right before the email sends, but we need to make sure the file is there until the email actually gets sent. Once the e-mail is sent, it would be nice to have this file deleted instead of sitting around eating SD card storage. Is this possible? (it can't be done in onActivityResult, e-mail intents don't actually finish, they cancel and thread the sending in a background service...so when onActivityResult gets called the e-mail might not have sent yet). Any ideas?
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Aug 10, 2010
What i want to do: delete an image file from the private internal storage in my app. I save images in internal storage so they are deleted on app uninstall.
I have successfully created and saved: code...
I have read on the android developer website that i must open private internal files using the openFileInput(...) method which returns an InputStream allowing me to read the contents, which i don't really care about - i just want to delete it.
can anyone point me in the right direction for deleting a file which is stored in internal storage?
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Jun 28, 2010
I can access the preferences and add and change them. How can I view the entire file that stores the keys and values for sharedpreferences in my app. I have changed, added and removed some keys from my code and would like to see the effect on the preference file.
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Nov 29, 2009
In an Android utility class, I want to get a system preference value in a class, but I don't have the context there, because the class that calls it doesn't have the context either. I've found that for Resources one can use the static Resources.getSystem() function. Is there any similar way for getting system preferences without context?
My class isn't an activity nor service. It's a utility class. Could give more info if needed.
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Sep 22, 2010
I want to delete image file in SD card after sending email...anybody knows,please give sample code for me.
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Sep 16, 2010
Downloaded Astro File Mgr based on people's reviews. Alot of different file folders on there and am wondering if I delete certain ones, will they permanently delete from the phone or just the program?
Things like:
com.espn.score_center
tmp
playgame site. etc
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