external sd card reader for android

1 byte[] bytes = DECODEIMAGSTR (imgstring);//using Base64 to decode a picture2 if(Environment.getexternalstoragestate (). Equals (environment.media_mounted)) {//Check the status of the SD card3String pathdir= environment.getexternalstoragedirectory () + constantsforfile.tmp_file_directory;//set File storage directory4String Picname =NewDate (). GetTime () + ". jpg";5File Dirfile =NewFile (pathdir);6 if(!dirfile.exists ()) dirfile.m

false;}/*** Delete Log File */public static void deleteLogFile () {File file = new File (filePath); if (file. exists () {file. delete ();}}}2. writing data to a file asynchronously does not affect user experience, and there cannot be any latency due to log writing. (In this experiment, if the data written to a file is small at a time, it will not be too slow even if the data is synchronized) to achieve this goal, we first consider multithreading. Another thread is responsible for writing logs t

I always thought that the automatic mounting of Android SD card is implemented in Vold, and its configuration file is easily found on the Internet which is system/etc/vold. in fstab, the configuration file is Mount, which is generally as follows: Dev_mount sdcard/mnt/sdcard 3/devices/platform/sc65-sdhci.0/mmc_host/mmc0/mmc0: 0001/block/mmcblk0 nonremovable, en

. Android_secure is the product of the official app2sd. After deletion, the software installed on the SD card cannot be used. There are a lot of. ASEC files, which are software installed on the SD card, but they are usually installed in the SD card.ProgramThe. android_secure

(1) Description: The operation of the file on the SD card needs to add the following permissionsCreate and delete file permissions on an SD cardPermission to write data on an SD cardThe file on the SD card operation and my previou

[] data = bos.toByteArray();fis.close();bos.close();return new String(data);} catch (Exception e) {e.printStackTrace();}returnnull;}/*** @desc 将文本内容保存到sd卡的文件中* @param context* @param fileName* @param content* @throws IOException*/public static void saveToSDCard(Context context, String fileName, String content) throws IOException{File file = new File(Environment.getExternalStorageDirectory(),fileName);FileOutputStream fos = new FileOutputStream(file);f

/** * Save Bitmap to a file. Saves the picture to the SD card. * * @param bitmap * @param file * @return error message if the saving is failed. Null if the saving is * successful. * @throws IOException */public static void Savebitmaptofile (Bitmap Bitmap, String _file) throws Ioexcep tion {//_file = /** * Get SDK Path * @return */public static String Getsdpath () { File sddir = null; Boole

Read event binding Listener Read.setonclicklistener (new Onclicklistener () {public void OnClick (View v) {edit2.settext (read ());}});} Public String Read () {if (Environment.getexternalstoragestate (). Equals (environment.media_mounted)) {File Sdcarddir = Environment.getexternalstoragedirectory (); try {fileinputstream fis = new FileInputStream (sdcarddir.getcanonicalpath () + file_name); BufferedReader br = new BufferedReader (new InputStreamReader (FIS)); StringBuilder sb = new StringBuilde

1, because the simulator must be installed under the system disk, so the default SD card file is also stored in the C disk, then the expansion of capacity will inevitably lead to the reduction of C disk space, which is usually intolerable to users, so you also need to transfer it to the hard disk of other more free partitions, The following functions can be used to facilitate the implementation of the Force

Android-system information (memory, cpu, SD card, power, Version)The total memory size of memory (ram) android is stored in the system's/proc/meminfo file. You can read this file to obtain this information: copy the code public void getTotalMemory () {String str1 = "/proc/meminfo"; String str2 = ""; try {FileReader fr

There are at least 10MB of available storage space in the Android version of the Skype phone, and Skype needs more storage space to keep the data after the installation. (Skype's footprint is determined by the amount of user's account information, typically requiring about 15MB of space)--that is, for a typical user, it requires 30MB of space to install and use Skype completely. Download the latest version of the installation program, the

This article describes the Android programming method for reading local SD card images. Share to everyone for your reference, specific as follows: Private Bitmap Getdiskbitmap (String pathstring) { Bitmap Bitmap = null; Try { File File = new file (pathstring); if (file.exists ()) { bitmap = Bitmapfactory.decodefile (pathstring); }

Android obtains all pictures, video thumbnails, and album covers on the SD card.Query Images First, query the inherent Android database. The image Uri isImages.Media.EXTERNAL_CONTENT_URI.The following is a specific instance query,FileInfoIs a custom data model. Public ArrayList QueryAllImage (final Context context) {if (context = null) {// judge the validi

Copy files from the Android Project Assets folder to the SD card

Android files saved to the app and SD card

Tag:android database private void Copydbtosdcrad () {String database_name = "Database file name"; String OldPath = "data/data/com.packagename/databases/" + database_name; String NewPath = environment.getexternalstoragedirectory () + File.separator + database_name;copyfile (OldPath, NewPath) ;} /** * Copy a single file * * @param oldpath * String Original file path * @param newpath * string after copy path * @return Boolean */ public static void CopyFile (String oldpath, String newpath) {Try{in

(); Fos.close (); Toast.maketext (circleshareactivity.this, "screenshot file saved to sdcard/andydemo/screenimage/", Toast.length_long). Show (); }} catch (Exception e) {e.printstacktrace (); }}/** * get SDcard folder path function * @return */private String Getsdcardpath () {File Sdcarddir = n Ull Infers whether SDcard exists as a Boolean sdcardexist = Environment.getexternalstoragestate (). Equals (Android.os.Environment.MEDIA_MOU NTED);

two different ways:First, the window interface operation1. Open DDMS page2. Open the File Explorer page, if not, at window---Show View-->file Explorer3, generally in mnt--sdcard4. In SDcard, click on the destination folder where you want to put the file, such as mp3 folder5, click on the folder, on the right side of the File Explorer page, there are two icons, one is pull, one is Push,pull will be mp3 inside the file pulled out, push is the outside, such as the files on the hard drive into the M

Android storage location is not in the selected "SD card", androidsdModify the saveImageInBackgroundTask method of GlobalScreenshot. java: String imageDir = Environment. getExternalStoragePublicDirectory (Environment. DIRECTORY_PICTURES). getAbsolutePath ();1. Modify JB2 to String imageDir = StorageManager. getdefapath path () + '/' + Environment. DIRECTORY_PICTU