sd card corrupted android

= "error") {toast. maketext (mainactivity. this, "reading failed! ", Toast. length_short). Show (); show. settext (" reading failed! "); Return;} Show. settext (" read successful: "+ Str); toast. maketext (mainactivity. This," read successful! ", Toast. length_short ). show () ;}}); write. setonclicklistener (New onclicklistener () {public void onclick (view v) {string STR = show. gettext (). tostring (); If (writesdcard (STR) = true) {toast. maketext (mainactivity. this, "Write successful! ",

Directly on the code:Package Com.example.callstatus;import Java.io.file;import Java.io.filewriter;import java.io.ioexception;import Java.io.printwriter;import Java.io.stringwriter;import Java.net.unknownhostexception;import Java.text.simpledateformat;import Java.util.date;import Android.annotation.suppresslint;import Android.os.environment;import android.util.log;/** * Android Development Debug Log Tool class [support save to

] = = '. ') | |(Name_len = = 2 de_src->d_name[0] = = '. ' de_src->d_name[1] = = '. ')) {Continue}else {src dir path Append the folder ' s D_namesprintf (Src_file_path, "%s/%s", Src_dir_path, De_src->d_name);printf ("src dir path:%s\n", Src_file_path);Des dir path Append the folder ' s D_namesprintf (Des_file_path, "%s/%s", Des_dir_path, De_src->d_name);printf ("Des dir path:%s\n", Des_file_path);printf ("---entry sub dir to restore\n");ret = Restore_dir_file (Des_file_path, Src_file_path);prin

Android newest mobile phone internal storage size, SD card storage size Method We used to obtain this information in the past. // Before Android API18: fs. getAvailableBlocks () * fs. getBlockSize () Currently: /** Obtain available system memory **/@ SuppressLint ("NewApi") private String getMemFree () {S

Mobile phone storage and SD card of all storage devices mounted to Android devicesObtain all memory attached to an Android device The android system provides Environment. the getExternalStorageDirectory () interface obtains the path of the storage. However, this interface do

[] buffer =New byte[1*1024];//Stream Read IndexintDownloadnum = 0; //writes an input stream to a file while((Downloadnum = inputstream.read (buffer))! =-1) {output.write (buffer,0, downloadnum);} Output.flush ();When the file is downloaded to the SD card, output.write (buffer); This code is absolutely problematic and causes the file to become corrupted. So take c

The first few days encountered a problem: Save the image to the SD card in the Android development app, and the user searched in the gallery, similar to the form of the cache. The first idea is to change the suffix name, for example, to save a picture as Image1.txt, so save of course no problem, but in the application of reading in the not, and later did not stud

Android determines whether the mobile phone has an SD card or USB. Static judgment, androidsd The determination of SD card is divided into static and dynamic, Dynamic Registration of broadcast, many people are writing online, so I will not elaborate too much here. For this s

Back to SD card pathpublic static listStorageManager sm = (StorageManager) context.getsystemservice (Context.storage_service);listFile exdirfile = Environment.getexternalstoragedirectory ();String externalstoragedir = "";if (exdirfile! = null) {Externalstoragedir = Exdirfile.getabsolutepath ();}try {String[] paths = (string[]) Sm.getclass (). GetMethod ("getvolumepaths", null). Invoke (SM, null);if (paths!

/*** Method of obtaining SD information*/ Private voidGetsd () {//TODO auto-generated Method StubFile path=environment.getexternalstoragedirectory (); StatFs Stat=NewStatFs (Path.getpath ()); LongBlocksize=stat.getblocksize (); Longtotalblacks=Stat.getblockcount (); Longavailableblocks=stat.getavailableblocks (); Longtotalsize=blocksize*totalblacks; Longavailsize=availableblocks*blockSize; String Totalstr=formatter.formatfilesize (mainactivity. Thi

Under the cmd command line, enter the Platform-tools directory. 1. Create SDcard mksdcard-l Mycard 256M E:\android\myCards\mysdcard.img This creates a virtual image of an SD card in this directory.Where the-l command-line parameter represents the volume label of the virtual disk. 256M is the size of the virtual sdcard created, between 9m-1023m 2. Activating sdcar

Starting point:Traditional game simulators (FC, Neo, FBA, GBA, Mame, n64, NDS, and PSP) are all moved to Android phones, the game Rom is then saved to the SD card and run through the simulator. However, considering that mobile games must follow the fast forward and fast forward principles, I have implemented the following micro-innovations on this basis: 1. direc

Android 4.4 and later systems have read and Write permission restrictions on level two external storage devices, resulting in applications that may not be able to read and write external SD cards, and the following methods can be lifted.1, root system.2. Install the RE manager.3. Use the RE manager to modify the "Platform.xml" file in the "/system/etc/permissions" directory, locate the following label and a

Steps1Get the path to the SD cardFile root =environment.getexternalstoragedirectory ();2Determine the path to the file to be writtenString path =root.getabsolutepath () + "/test2" + "/TEST3";3and turn the path into file.File file =new file (path);4 Creating a DirectoryFile.mkdir ();5 write the specified file in the specified directory aboveFile File1 = new file (file, "Test.png");Be sure to pay attention to the difference between path and file, and mu

There are two ways to resolve this:1.by modifyingAndroidSystem of source code, openSDThe card read and Write permission, the detailed modification method and the explanation, may refer to the online materialhttp://www.ifeegoo.com/ Android-debug-static-storage-paths-are-not-available-from-aid-system-error-analysis-and-solution.html2.in the application, theandroid:shareduserid= "Android.uid.system"insteadandr

(tag); Sb.append (": "); Sb.append (msg); Sb.append ("\ n"); Randomaccessfile RAF=NULL; Try{RAF=NewRandomaccessfile (Mlogfile, "RW"); Raf.seek (Mlogfile.length ()); Raf.write (Sb.tostring (). GetBytes ("UTF-8")); } Catch(unsupportedencodingexception e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); } finally { if(RAF! =NULL) { Try{raf.close (); }