File length returns 0 android. File length is still 0.

File length returns 0 android listFiles(new CustomFileFilter()); I need to calculate the physical size of a directory. I'm writing an application to list all video file in a folder and display information of all videos in the folder. Attempt to read from null array but array contains several filenames. This function returns the length of the file denoted by the this abstract pathname was length. When recording video or after selecting video from gallery I want to know the size of my video which I took. currentBytesRead = inputStream. Source: Android documentation. For some devices, when the Android Media Provider notifies about new content added to the provider, the file still reports length zero. I'm importing data from my XML file. File class. 1) using file length path = "/ On KitKat devices, the progress bar percentage does not update (always 0). While I run ls -l, it has 12 bytes. toString(). length() returns true as value and I can play the MP3!! Android download manager file size not getting properly. Related. That is the reason in Android 11, you dont even need the flag to request support for Java APIs. { BufferedInputStream buf = new BufferedInputStream(new FileInputStream(file)); buf. I want to determine the size of the image programatically in kb or mb. please see Extensions to FTP RFC3659 for the size FTP cmd syntax. I am assuming this might be something to do with using the app internal storage. This is the problem: int count = inputStream. // Converting Bitmap image to Base64. isExternalStorageManager() 3. 3. Thanks to StackOverflow. length() returns 0 or not, that Hi, I am using jenkins to build Android game with Unity. The default implementation of this method in InputStream always returns 0. The camera application starts, but the resultCode is always 0. getFullPathFromTreeUri(treeUri,this); Is it possible to easily get the size of a folder on the SD card? I use a folder for caching of images, and would like to present the total size of all cached images. length()==0 So I solved my problem but I'm still left with a question. NotFoundException) { return 0 } } If you'd like a simple way to get a different byte representation, you can use these The documentation for File. "This is my string blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah So you can declare the permission should be requested only on the lower versions of Android by adding the maxSdkVersion attribute: <uses-permission android:name="android. File exists returns true. The issue is on the line long fileLength = file. length(); This returns the length of the file in bytes or 0 if the file does not exist. Alternatively, if you're reading from a file, length() returns the current length of the file (though assuming the file's length can't change may be incorrect, reading a file is inherently racy). To get the data type of a shared file given its content URI, the client app calls ContentResolver. The problem is that whenever i check its size quickly in another thread it sometimes Hi, I have a applet where I need to check the size of a file on the hdd of the user. length() in Files: in FileByteSource. getPath()); long ls = file. txt"); long size = file. File. HttpURLConnection content length returns -1 on android 4. Important Note: if you get file path from Uri [Don't use Uri. Steps to replace file:// I observed the following strange outcome in my real Nexus 5 device, Android 6. attempt to find length of null array but array contains several filenames. I need to iterate over a folder, going throughout all the files in it. decodeByteArray(byteA, 0, byteA. I'm getting a audio file which I'm saving in a uri (android. Check if you have all files access by using: Environment. getPath()); F The code works and downloads the file; however, what does not work is the progress bar update because the file length returned is -1. This method returned me an empty string. For now I'm sending a pulse from my activity to my service to get a quick sound reading and checking the Logcat printout of the amplitude as my volumeter. length() will return 0L if file doesn't exists ( developer. So, File. My Problem is a NullPointerException at files. length: Returns the length of the file denoted by this abstract pathname. However, It says that my folder is empty (size = 0). 2) and my tablet emulator (10" Android 4. listFiles()) { The problem I had was I was trying to delete a file that is empty: file. length(); } else { JOptionPane. The size is actually zero; The file does not exist in the path; So How am i supposed to eliminate the files that have 0 size in my file explorer. length. i get -1 length of file asynctask android download. Use the length() method of the File class to return the size of the file in bytes. I want to get the build size with File. 0" Android 4. But it returns correct file size when I run it on API 16 (JB). 0 however, it always returns -1. retrieveFileStream("/" + fileName); always returns null. The return value is unspecified if this pathname denotes a directory. From documentation. You have given it a "path" extracted from a URI which is probably not a pathname for a file system object. Hot Network Questions How do you check if a given force is Galilean invariant? What is a good approach to show my data only belongs to one cluster? Someone I met online asked me to open his online account How could a tropical saltwater lake, turned to freshwater, become salty again? -1 means that web server doesnt give you any information about length of file. File exists 100% (because I even tried to create it straight before getting the length (and checked it exists). I have the following code: File file = new File(path); FilenameFilter mediafilefilter = new FilenameFilter(){ private String[] filter Assuming you're using java. body() Retrofit returns content length 0 with spring data rest. What baffles me most is i get the content length in iOS but not on android. The problem I got is when I try to read my int array, I only get 0 as values. 256 / 1024 = 0. We still have many old server running today that don't even return content length but you can download from them successfully. image); image. listFiles() returns only subdirectories. File object in Android? I tried the following but it doesn't work: File file = new File(Envir The File constructor takes a file system pathname as as its argument. length() greater than 0 when actual file is 0 bytes. That means the next value you read (the size) will be incorrect. File length is still 0. Pattern emailPattern = Patterns. 4,333 9 9 gold badges 48 48 silver badges 96 96 bronze badges. We create our own class inheriting FileProvider in order to make sure our FileProvider doesn't conflict with FileProviders declared in imported dependencies as described here. The function returns long value which represents the number of bytes else returns I have a log file in my app that is constantly being written to and sometimes i need to check its size. Hot Network Questions How are companies paid for offering the 'Deutschlandticket'? Download a file with SSH/SCP, tar it inline and pipe it to openssl Pancakes: Avoiding the "spider batch" I am just trying to learn how to work with the android language. 3 calls to File. Can you open a shell (adb shell) on the device and run ls -l to see the byte count displayed by it is 0 (maybe Ask questions, find answers and collaborate at work with Stack Overflow for Teams. length; i++){ It is caused because i have a "fail readDirectory() errno=13" at I believe these 2 sample codes will help at least someone the same way many have helped me through this platform. length() is extremely slow with external storage. getPath()); // Get length of file in bytes long fileSizeInBytes = file. listFiles returns an array if the File instance from which this method is Get the size of an Android file resource? Ask Question Asked 13 years, 7 months ago. . available() might match the file size if the file is very small, but for larger files it isn't expected to match. Viewed 4k times <uses-permission android:name="android. 25. According to Java docs function . The function returns long value which represents the number of bytes else returns 0L if the file does not exists or if an exception occurs. I am trying download a file from ftp server to sdcard using Apache Commons FTPClient. fileSize = file. I have get the file in SD card now want to get the selected file in bytes. length() is returning 0 unexpectedly, verify the file's existence, check whether it is indeed a file and inspect permission settings. Use method length() instead. Share. Can someone give me a tip on how I can deal with this. this, "" + position, Toast. length()) – android developer Commented Sep 6, 2018 at 8:47 If the server does not allow the client to list the files. I am trying to get all files and subdirectories in directory and show their names. Android File. getPath(). Imports: import 'dart:io'; import 'dart:math'; I am trying to recursively show all the files in a directory, however, when I try to use the listFiles() method to list the files in an array it keeps returning null. This will give you the actual path of the selected folder It will work ONLY for files/folders that belong in local storage. I use file and bitmap. Gone views returns 0 as height if app in background. 5 I have the code as shown here. What has been changed between these 2 versions, and how can I fix it? I just need to send file that is only less than 2 mb. The Android File documentation mentions nothing about this behavior. formatShortFileSize(context,file. getContent(). listFiles() suggests that null will ONLY be returned in the case that the file calling it is not a directory. MANAGE_EXTERNAL_STORAGE" /> to manifest 2. What is the easiest way to convert from an android. 7 URLConnection. EMAIL_ADDRESS; // API lev This should make your issue with 0-byte files occur less often. If your File object has a pathname for a non-existent file, then when you call File::length, the The content length is not always available because by default Android request a GZIP compressed response. READ_EXTERNAL_STORAGE" /> file. 4" Android 4. The length, in bytes, of the file denoted by this abstract pathname, or 0L if the file does not exist In addition there's no need to check for existence in any case, since file. so far I have attempted the following approaches: Note: all the permissions are in place and i do have access to the file. length() returns in kb when i divide by 1024. Hot Network Questions I am a newbie to Android. WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="18" /> but maxSdkVersion is the issue, I just removed it and now it 0 . postWithTreeObserver(postJob: (View, Int, Int trying to get length of file which from local storage. I want to get the size of a file in MBs and to put limit on file select based on its size. I have the following: String dir = "/storage/emulated/0"; java. This is the hex representation of my file (got from xxd -p): 2090887fffd0ffff437ffd0c Here is the code. Length() 3. getPath()). This is the code I use: File internalStorageDir = new File(Environment. length return always 0 in android. Subclasses should override this method if they are able to indicate the the above code returns true in case of Android 10 or lower. On Android 2. I have a problem getting the size of a file. showMessageDialog(null, ""); return; } // Overwrite In summary, if you're experiencing a situation where File. I do this by calling. Subclasses should override this method if they are able to indicate the Android File. As such, this file will have only meta info without any content, with zero length, and this is probably a I am able to select a pdf type file from the internal storage of my phone. How can i do it The code for saving to array l I was creating an application to test whether File. If you don't, In my app i am getting the images from a folder in gallery and saving it into an array list. length() returns 0 in both cases. val size = descriptor?. 1. close() return size } catch (e: Resources. By default, a FileProvider determines the file's MIME type from its filename extension. File file = new java. Any ideas? I need to get the size of a file, but I keep on getting 0 as the size, which is not the actual size. file. length(); // Convert the bytes to Kilobytes (1 KB = 1024 Bytes) long fileSizeInKB = fileSizeInBytes / 1024; // Convert the KB to MegaBytes (1 MB = The method length() in File returns the length of a file in Bytes, this code transforms that into b/kb/mb as can be seen in the Windows Explorer I ended up with the code below, let me know if it c I tried to use standard methods to determine the mime type, but I cannot retain the file extension using MimeTypeMap. This method returns the file's MIME type. 0. length() but it always return 0. getCacheDir() then read the length of the file from there. length ?: return 0 descriptor. 2. My smartphone runs on Android 7. getTotalSpace: Returns the size of the partition named by this abstract pathname. I researched and people say that it’s because that the Return the length, in bytes, of the file denoted by this abstract pathname, or 0L if the file does not exist. length); //<- I get null here ImageView image = (ImageView) findViewById(R. If it doesnt exist response. Ask Question Asked 11 years, 7 months ago. ). I need to show these HTML files from assets' sub-folders in a list. Uri treeUri = data. Everything works, File. I want to check size of file where I have only URI content://media/external/video/media/813 to get size of file I use: File file=new File(uri. How to compare the regular imagefile. length(); where the fileLength is 0. Since 4. 7. getExternalStorageDirectory(), "lala. length() returns 0 while writing to it. // Get file from file name File file = new File("U:\intranet_root\intranet\R1112B2. There is no built-in way to get the size of a folder, you are going to have to walk the directory tree recursively (using the listFiles() method of a file object that represents a directory) and accumulate the directory size for yourself: A file's data type indicates to the client app how it should handle the file's contents. getContentLength() returning -1 on some devices and not others. read(buffer, bufferOffset, Math. It would fix the problem regardless of where other team members store their project files. you also can use the following function example. show(); } }); } Here is the xml layout file: Android getWidth I am new to android platform. but returns false in case of Android 11. Used easyimage library in the project. getContentLength() returns -1 when I run it on KitKat. how to get values in kb of bitmap file? It loops until its totally compressed to 0 quality. However, it returns 0. Camera resultCode returns 0. Can somebody please help me to solve this? Thank you in advance. toFloat(). But bitmap image returns byte bitmap. But following code always returns 0 although the file has been successfully selected. compress(Bitmap. So to get file path always use Uri. pdf etc) Android File. length() instead of getContentLength() None of these worked for me yet. getData(); String path = FileUtil. 10. Here's some sample code that does this. then reference that dimension resource from your layout file and your source code, to avoid this problem. To check for 0 byte files using File. Can anyone tell me where I am making a mistake? String test = "test"; byte[] byteA = test. So you can have something like: fun File. 1 I run the following simple code during my app launched. Try Teams for free Explore Teams suppose I have a string below. Is there a way to this other t I am trying to include a camera in my app that saves the files locally on the SD card. or 1024 into a float or a double, otherwise the operation will return an integer which in case the file size is less than 1024 will return 0. It returns the length of the file indicated by the file path. 2, I have got a mistake and my app is closed, in this case I have to put: I have some folders with HTML files in the "assets" folder in my Android project. getFileSizeFloat(): Float { return this. The line InputStream input = client. Content Length header is to only give you a heads up of how big the content is and can be used to request parts of a file data. sendCommand("SIZE", remoteFilePath); String[] reply = In the xml layout file, gridview was the only view, then I added it to a linearlayout so maybe it atleast return the width and height of its parentbut that is still zero. io. I'm a beginner in Android programming. setImageBitmap(bmp); Alternatively, if you're reading from a file, length() returns the current length of the file (though assuming the file's length can't change may be incorrect, reading a file is inherently racy). min(1024, fileLength - bytesRead)); In order to use the same File API to get ALL files in Android 11, you need to do following: 1. net. Just stumbled upon the same issue. File[] files = path. getExternalStorageDirectory(). Function signature: public long length() Syntax: long I'm creating an Android app, and I want to list the files in a directory. The naive algorithm to do that could be : public static long getFolderSize(File dir) { long size = 0; for (File file : dir. getBytes(); Bitmap bmp = BitmapFactory. getContentLength() returns -1. View v, int position, long id) { Toast. Some operating systems may return 0L for pathnames denoting system The method file. But the file is there in Ftp location. 0 if that's of any help. inputStream. So getTotalSpace is for checking information about folders or drives. Google drive is sending length of file to -1 progressdialog android. length(); // Convert the bytes to Kilobytes (1 KB = 1024 Bytes) long Android File. length(); and always get 0. listFiles() method is working or not. length() should work properly. This my code (1oo% works) fun View. File("myfile. 2. From the javadocs: Returns the length of the file denoted by this abstract pathname. android content Length() return -1. Modified 4 years, 11 months ago. Just a tip for Android developers : To show the file size in a nice readable way on Android, you can use Formatter. I did some more test and find out that . . The length() function is a part of File class in Java . exists() returns true, but File. 3 file. I'm downloading an mp3 with DownloadManager and when the download is finished, After a few seconds the File. LENGTH_SHORT). Quoting the link: By default, this implementation of HttpURLConnection requests that servers use gzip compression and it automatically decompresses the data for callers of getInputStream(). length() returns 0 if file doesn't exist, it's just for a matter of What I'm trying to do: I'm trying to write a program that reads audio from the android microphone (without recording) and captures some measure of how loud it is using a service. private long getRemoteSize(FTPClient client, String remoteFilePath) throws Exception { client. Hot Network Questions Correctly sum pixel values into bins of angle relative to center Do Saturn rings behave like a small scale model of protoplanetary disk? What to do with a tenuto pizzicato note? Understanding pressure in terms of force I am trying to access my android files through my apk and (initially) list them on my terminal. Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a link to this Fetching the content length as string (from header field Content-Length) and then converting it to long; Tried conn. If the file This function returns the length of the file denoted by the this abstract pathname was length. createTempFile creates empty file on the System. Android - listFiles() doesn't list some files. After checking the codes, I found conn. android I'm looking for a way to read 'PDF' size. Uri object which holds a file: type to a java. txt"); file. Uri) I need to display it's size in a TextView. How can I fix that? java; android; uri; Daniele Daniele. map() might be problematic because they don't check if File. png, . bytecount. Is there any way to get the size of a folder based on its content uri without it taking forever? Or can I somehow find an actual path to the sd card and use Files instead? Android File. Modified 8 years, 10 months ago. size() and Files. (It might be if you are using a file: URL, but you are not checking the schema, so you can't be sure. Hot Network Questions caber in different expressions You should cast either your . Hot Network Questions Last board with Intel ICH 8/9/10 chipsets that had both, PCI and PCIe slots and allowed to use either as main GPU you need to open a stream to the file and then check the size like this: File file=new File(Environment. jpg extension. id. length() is used to retrieve the size of the file in bytes, according to the Java 7 Documentation. But when i try to get the video duration it Working on an SQLite database. txt, . for(int i=0; i < files. length, the result is only 9. listFiles() was giving me only folders and not any files (by files I mean . Unable to download complete file in android app. length); buf. getFileExtensionFromUrl(uri. <uses-permission android:name="android. Now i want to extract only the files with . In order to access the files, the permissions must be given in the manifest file. Please let me know how to perform this task in android. toString(); File file = new File(filepath. length(). Commented Feb 10, 2016 at 8:36. URLConnection. getType(). To check this I made an application and I used it there but this returning null in place of an array. 0 I have this piece of code which is going to download some file , well it Returns the content length in bytes specified by the response header field content-length but it will return -1 if this field is not set. sizeIfKnown(), FileByteSource. CompressFormat. It's the simple code and instead of getting result to set the Bitmap, I get null. Add <uses-permission android:name="android. java; android; nullpointerexception; Share. div(1024) } fun Android File. read(bytes, 0, bytes. I researched and people say that it’s because that the file is opening for writing. I am selecting an image from gallery. 1 boolean empty = file. Attempt to get Length of null Array of file. zip"); // Get length of file in bytes long fileSizeInBytes = file. Here is a solution using a function that will provide you with the file size as a neat formatted string. 2 ), but this is not valid for my emulator 4. length(); for more on this try reading here: Get the file size in android sdk? Use the length() method in the File class. EDIT 2: Heres my iOS and Android code for comparison - iOS: In my opinion, using a separate short build path allows for easier sharing of the project with others. For example: Integers. Why android:requestLegacyExternalStorage but it bounced back and now they will continue to provide support for file APIs. See more linked questions. This is valid for my smartphone emulator (5. Doubles or Float. makeText(GameActivity. 0 . you can try size cmd. So it can not update the progress. However, When I try to find the File's length with File. Add I am working on android video application where I am recording a Video using Camera Intent and taking a video from gallery. For a compressed asset, the only way to get the size reliably is to copy it to the filesystem, ex: context. java. JPEG, 100, I have a binary file. I need to create a text file in android. 3, it works well and returns the correct length. length() works well with internal storage but DocumentFile. 0. encode String type public String getStringImage(Bitmap bmp) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bmp. How I am trying to get file content in bytes in Android application. length() == 0; since according to documentation the method returns. CAMERA"/> <uses If your targetSdkVersion >= 24, then we have to use FileProvider class to give access to the particular file or folder to make them accessible for other apps. 13 About the maximum length: Since I couldn't find anything specific to Android, and since java does not restrict the length of a file name it works with (As you can see here), I'd say the maximum length is like the most widely used limit, which is 255 bytes. The Content-Encoding Hi, I am using jenkins to build Android game with Unity. – Debosmit Ray. permission. close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e Android File. length() returns 0. This is what I have written: public String calculateFileSize(Uri filepath) { //String filepathstr=filepath. I have written a code that is working fine in java but not in android. @EJP Many times servers return a content length of -1 and the file downloads successful. Android listFiles returns empty array. read(); while (count != -1) { You're consuming a byte and then ignoring it. toString()] as it will return file path in file:/// format, in this case [new File(filePath)] will not work. Retrofit gets header content-length. gheia lgc leozwo hlno bcmk gjswv vmrjb hxnlhfd gvbj brydt