First you have to specify the path of the sdcard. You can do that by creating a string like this: public static final String DATABASE_FILE_PATH = “/sdcard”; But for you should call Environment.getExternalStorageDirectory() to get the root path to the SD card and use that to create the database. After that you create the database … Read more
Lookup ACTION_MEDIA_MOUNTED broadcast action on the Intent public static final String ACTION_MEDIA_MOUNTED Since: API Level 1 Broadcast Action: External media is present and mounted at its mount point. The path to the mount point for the removed media is contained in the Intent.mData field. The Intent contains an extra with name “read-only” and Boolean value … Read more
You shouldn’t do that, you shouldn’t force the users to keep data on their phones without their consent. Anyway, application data directory will be deleted after uninstall, but NOT after an update The only way to have persistent data is to use the SD card, but again, users won’t like to have the data on … Read more
The process of saving a file (which is image in your case) is described here: save-file-to-sd-card Saving image to sdcard from drawble resource: Say you have an image namely ic_launcher in your drawable. Then get a bitmap object from this image like: Bitmap bm = BitmapFactory.decodeResource( getResources(), R.drawable.ic_launcher); The path to SD Card can be … Read more
Here is how you get internal storage sizes: StatFs statFs = new StatFs(Environment.getRootDirectory().getAbsolutePath()); long blockSize = statFs.getBlockSize(); long totalSize = statFs.getBlockCount()*blockSize; long availableSize = statFs.getAvailableBlocks()*blockSize; long freeSize = statFs.getFreeBlocks()*blockSize; Here is how you get external storage sizes (SD card size): StatFs statFs = new StatFs(Environment.getExternalStorageDirectory().getAbsolutePath()); long blockSize = statFs.getBlockSize(); long totalSize = statFs.getBlockCount()*blockSize; long availableSize … Read more
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
You can use this method to download a file from the internet to your SD card: public void DownloadFromUrl(String DownloadUrl, String fileName) { try { File root = android.os.Environment.getExternalStorageDirectory(); File dir = new File (root.getAbsolutePath() + “/xmls”); if(dir.exists()==false) { dir.mkdirs(); } URL url = new URL(DownloadUrl); //you can write here any link File file = … Read more
import android.util.Log; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream; /** * * @author jon */ public class Decompress { private String _zipFile; private String _location; public Decompress(String zipFile, String location) { _zipFile = zipFile; _location = location; _dirChecker(“”); } public void unzip() { try { FileInputStream fin = new FileInputStream(_zipFile); ZipInputStream zin … Read more
I’ve tried plenty of different methods to trigger the MediaScanner, and these are my results. SendBroadcast The most simple and naive solution. It consists in executing the following instruction from your code: sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse(“file://”+ Environment.getExternalStorageDirectory()))); However, this no longer works in KitKat devices, due to a lack of required permissions. MediaScannerWrapper As posted here … Read more
You are on the right track, however you are trying to do two things at once: read the file in and scale it to the appropriate size. The first step is to read the file to a Bitmap slightly bigger than you require, using BitmapFactory.Options.inSampleSize to ensure that you do not consume excessive memory reading … Read more