Android :: Creating Cache Files And Directories On HTC Desire
Oct 23, 2010
I've experienced a strange issue running applications on the HTC Desire.
When I call getApplicationContext().getCacheDir() or getApplicationContext().getFilesDir() from my activity this always returns null. In the emulator /data/data/com.myapp.android/cache respectively /data/data/com.myapp.android/files is returned.
Because of that I'm not able to use the webview class as it tries to create cache files and crashes with a null pointer exception. The logs:
CODE:..............
I noticed that other apps have issues as well. For example the google finance app logs the following message:
CODE:.............
Why I cannot create folders in this directory?
Is there a possibility to set the fileDir and cacheDir paths to the sd card or somewhere else? I looked at some classes like Context, Webview and CacheManager but I could not find a way to change it.
Do I need to set a permission to create cache files?
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Aug 11, 2010
Is it possible to create files in subdirectories created under "/data/data/packagename/files/" directory using openFileOutput method in android?
ie there is a sub-directory by name "text" inside the "/data/data/packagename/files/" directory.
I want to use the openFileOutput (String name, int mode) method to write a file eg:sample.txt into this directory....Is it possible to use openFileOutput method to do it....
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Sep 15, 2010
I cannot create directories and files on sd card.
This is the simple example:
code:.................
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Nov 20, 2010
I successfully partitioned EXT3/FAT32, rooted, and flashed Defrost.
Now a strange thing is occurring. I installed an off market app, but I can only see its folder in Android's File Manager, not in Windows XP.
This is going to cause me serious problems because I need to transfer some files into that folder from my PC.
How can I access this App's folder in Win XP?
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Nov 13, 2009
Is there a program for the Android OS that allows to to access your files and directories, like 'Windows Explorer' does on your desktop pc? I have some audio files that I would like to move to the ringtone directory.
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May 27, 2010
I have images uploaded on the simulated sdcard on my emulator. I downloaded them from the browser, using the long-click on each image.
When I look at the file explorer in the DDMS perspective, I see that they are in the directory sdcard/download.
Now if I want to download some audio files and use them in an app to, say list the title of all audio files, will they go in the same directory? (I am trying to push the audio files manually from my computer to the emulator).
This doesn't seem right. Shouldn't the media files of different types (pictures, audio, video) go into different directories?
Also, thinking this through a little, how is something like this related to the physical directory on the sdcard?
Uri mMedia = android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
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Oct 11, 2010
I have created a directory and even a file in that directory on the external storage, I am able to read and write into that but the problem is they are not visible on the emulator i.e, in the phone.
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Jul 18, 2009
I'm storing my Android project in a Subversion repository. After recently shuffling a bunch of stuff around I started getting tons of errors like: syntax error entries/project_name/src/.svnline 1Android AIDL Problem syntax error don't know what to do with "" entries/project_name/src/.svnline 28Android AIDL Problem etc.
It seems as if Eclipse is trying to build the files in the .svn directories now. This setup used to work fine.
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Nov 14, 2010
How to programmatically move copy and delete files and directories on SD(android)
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Mar 30, 2010
I need to generate a changelog of sorts between two Tags within a project controlled using git. Specifically the android source code. This list should include any files/directories/etc which have been edited, moved, renamed, deleted, created. and if you have a way to do this over the entire android source at once... even better.
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Sep 23, 2010
can I delete these.. anyone know?
on phone
/cache/ has about 20+ different "downloadfile.jpeg" and "downloadfile.apk" files? can I kill all of these off?
/sdcard
._.TemporaryItems (dated feb 10th) - can I delete?
._.Trashes (dated feb 9th) - can I delete?
._[] (dated feb 11th) - can I delete?
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Jul 20, 2010
I may opt to buy a larger 16GB card for my Dinc to replace the 2GB card that came with it that I've been using for weeks. Will it just be a matter of copying all the files and directories from the old card to a temp folder on my PC and then copying them back to the new card once installed in the phone? Don't want to lose what I already have on my 2GB card.
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Dec 27, 2009
I find it kinda annoying that recordings made the voice recorder application show up in the music player. I'd like to have only my music play when I set it to shuffle. I have all my music in a folder called music. Can I limit the music player to search in that folder only?
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Jun 21, 2010
I'm trying to cache an image obtain from a webside. However, CacheManager.getCacheFileBaseDir() always returns null. Do I need to create the cache folder in the android emulator? if yes, how can I do it? in which directory i need to create it in?
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Nov 3, 2010
I'm trying to manage the files that I store in a local cache. I download files, then delete them after the total file size in the cache exceeds a certain number of bytes. What I'm shooting for right now is something simple: setting the max cache size to be 1 MB, or 1*1024*1024 bytes = 1048576 bytes. I have a method that gets the cache directory, then does a listFiles() on that File to get all children of the directory. I have a flat cache structure, no subdirectories, so simply calling f.length() on every child should give me my total cache size right?
Well what I'm finding is that the amount I count is about 0.9 of size reported in Manage Applications > Application Info for my app, in the Cache section.
Am I making a bad assumption that File.length() will actually return to me the size, in bytes, of a file on disk? I also wonder also if disk space in the Cache directory is being used by Android at all for some reason I'm unaware of.
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Oct 6, 2010
Got a desire last night which was unlocked and rooted, got home and was getting an error about com.android.mms has stopped working so did a factory reset, not solved the problem but now have another one. Will the factory reset have unrooted my phone as cant work out how to install apps to my sd card, downloaded ES file explorer which does let me explore my phone but shows half directories as empty.
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Jun 27, 2011
I noticed in the newer releases of busybox there's no 'zip' command anymore. I'm running busybox 1.19 on my Incredible.
I have been using this command to create different bootanimation.zip files from my phone but am wondering if there is an alternative command I can use from within Android. I've tried tar -cvzf but I believe tar archives/compresses the files differently and renaming the extensions to .zip does not work.
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Sep 28, 2012
I cannot play my mp3s without one or two songs repeating over and over, before going to a new song, then the player goes back to the same repeated ones. I noticed that extra files are being created continuously in the mp3 folder. Even if I make a play list the player still manages to go back to these invader files. Is that a micro sd card or android issue. I first notice it after I install ics on my SGS I9000. Now I am JB (I9300OXADLI8).
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Mar 21, 2014
I bought a Samsung Galaxy S2 Hercules (T-Mobile) and its used. In the Last week I pull some photos and mistakenly delete them, but with my "Recurva" program i could see all the photos (mine and others owners)
On the one hand I'm happy for having recovered, but if one day I want to permanently delete photos, I have the fear that the other person recovers.
How I can delete all photos, videos and files in the cache memory?
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Oct 21, 2011
I have a rather new phone, 2 weeks at most. I have rooted it, and am now trying to get it on odin. We have two bricked phones to work with, Download mode still works with both. I have dumped all partitions in /dev/block.I am working on the OPS file. I found this in the I believe Odin image. I think it's the OPS but I don't know.
here is the lines cleaned up this is the exact order I found it in from the image.
MIBIB
SIM_SECURE
FSBL
OSBL
NVBACKUP
AMSS
EFS2
APPSBL
DSP1
QDSP_Q
CPFOTA
boot
recovery
parameter
system
userdata
cache
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Jun 14, 2010
I've been theming my phone over the past week with Froyo BuglessBeast and have almost got my phone just the way I want it (custom icons, colors, launcher image, etc) My question is, how do I make this into an updateable file so I can flash it over future bugless upgrades instead of having to re-do everything again?
Just for information, not sure that it makes any difference. I themed the stock launcher as well as framework-res. I didn't do it with a home replacement.
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May 11, 2014
I want to make am basic app of website . To be accessible offline.I have files:
database/database.txt
css/style.css
img/logo.jpg
index.php
how to put that files info apk file and make it all working (php) ?
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Mar 21, 2014
I'm looking for a method or an application for android tablet, which allows me to quickly reset the device deleting any data (from the Internet cache, and the cache to the photos of the various programs such as facebook, twitter etc ...) and that does not allow any modification of the operating system. I need this solution because I have a restaurant and I want to put a tablet on each table for guests to make him see the menu (full of photos and videos), surf the internet and play with the kids.
is there an app that allows this? or is there a quick way to do this, such as a multiaccount management ? I remember, for example, that for windows there are applications that completely erase any unauthorized modification, files and cache, at the time you restart the operating system.
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Oct 23, 2010
I am pretty close now to finally making my first android phone purchase. I have been between the Desire, Galaxy S and the Desire HD for the last month but have been really turned off by the small battery on the DHD and have just found I can get almost all the feature on the Desire with 2.2. One answer I couldnt find is does the froyo update for 2.2 have auto caching of the maps? I use my map a lot as I travel all over the city and this really intrigued me about the DHD. If not not a big deal but would make me order the phone right now
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Aug 16, 2012
In cm roms, dalvik cache of system apps are generated in /cache but those data/apps are generated in /data. Is there any way to disable this behaviour? Cache partition in our phones is too small. In AOSP and AOKP and stock roms, dalvik cache is always generated in /data no matter whether its a system app. any way to achieve this in cm roms?
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Apr 27, 2010
We've had our desire's for a few weeks now and was just wondering what the phones performance is like for you guys/gals? you've all put on apps that you want and music and videos etc., has this affected the phone in anyway? Does it still run like it did out of the box or do you experience lag or other faults? Interested what you have to say.
The only gripe that I have is it is sometimes slow to access the market and takes a few seconds to load the page when scrolling down and I've got a stutter when I access an app to read reviews. Other than that it still runs smooth, I've got music, videos, apps, widgets and voice to text on mine and is easily the best phone I've ever had. Has anybody got a cache cleaner app, I can only find one for rooted phones?
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Aug 30, 2010
These day low on space notification has come up and i was trying to discover what happens and i noticed that the facebook app was 10mb. I have previously checked my apps and it was 7 mb. On cyrket it says that it is 2 mb (http://www.cyrket.com/p/android/com.facebook.katana/). My question is can i clean this hidden cache from facebook and other apps (twitter also is 10 mb) without rooting.
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Jul 23, 2010
Just bought a new HTC Desire and to use the Wifi network at University I need to change the cache settings however I can't find any option to do this what so ever! I know you can on Android 1.6.
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Sep 19, 2010
I have Desire not rooted and I'm trying recovery but ...E:Can't open /cache/recovery/command (this comes up before even trying to run the update)
--Install From sdcard...
Finding update package...
Opening update package...
Verifying update package...
E:signature verification failed
Installation aborted.
I was having black SLCD (RUU_Bravo_HTC_WWE_1.21.405.2_T2_Radio_32.41.00.32 U_4.08.00.09_release_137222_signed.exe) and have solved the problem right now and do OTA update to Froyo and there is System Info.:
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Jun 21, 2010
I'm implementing an image cache system for caching downloaded image.
My strategy is based upon two-level cache:
Memory-level and disk-level.
My class is very similar to the class used in the droidfu project
My downloaded images are put into an hashmap and the Bitmap objet is wrapped inside a SoftRererence object.
Also every image is saved permanently to the disk.
If a requested image is not found into the Hashmap<String,SoftReference<Bitmap>> it will be searched on the disk, readed, and then pushed back into the hashmap. Otherwise the image will be downloaded from the network.
Since I store the images into the phisical device momery, I have added a check for preserve the device space and stay under a 1M of occupied space:
CODE:.................
This method is called sometime afte a disk writing:
CODE:..............
What I'd like to add is the same check on the HashMap size to prevent it will grow too much. Something like this:
CODE:.....................
My question is:
What could be a right MAX_MEMORY_SIZE value? Also, Is it a good approach? A good answer also could be: "Don't do it! SoftReference is already enough"
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