sd-card
How can I get the size of a folder on SD card in Android?
Just go through all files and sum the length of them: /** * Return the size of a directory in bytes */ private static long dirSize(File dir) { if (dir.exists()) { long result = 0; File[] fileList = dir.listFiles(); if (fileList != null) { for(int i = 0; i < fileList.length; i++) { // Recursive … Read more
Android Open External Storage directory(sdcard) for storing file
I had been having the exact same problem! To get the internal SD card you can use String extStore = System.getenv(“EXTERNAL_STORAGE”); File f_exts = new File(extStore); To get the external SD card you can use String secStore = System.getenv(“SECONDARY_STORAGE”); File f_secs = new File(secStore); On running the code extStore = “/storage/emulated/legacy” secStore = “/storage/extSdCarcd” works … Read more
getExternalStorageDirectory not working
Actually, that is the correct location. From android 4,2 onwards, Google introduced multiple user accounts. Every user has his/her own external storage, which has the user ID in the path to maintain uniqueness. The primary (default) user’s ID is 0. So you get /storage/emulated/0/ as the path to the external storage.
How does storage access change on Android 6?
Let me answer Adoptable Storage Devices related questions: Suppose the user has chosen to use “Adoptable Storage Devices”, what does it mean for the various functions that retrieve the paths of the app’s files? For example : getFilesDir, getExternalFilesDir,… ? Would the oder of getExternalFilesDirs change because of it? When user choose to use SD … Read more
Android how to use Environment.getExternalStorageDirectory()
Environment.getExternalStorageDirectory().getAbsolutePath() Gives you the full path the SDCard. You can then do normal File I/O operations using standard Java. Here’s a simple example for writing a file: String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath(); String fileName = “myFile.txt”; // Not sure if the / is on the path or not File f = new File(baseDir + File.separator + … Read more