how to read corrupted sd card

1. Description of the phenomenon1) using the IMX6 Development Board, load 9 feet of 8G SanDisk SD card, the SD card read and write files are normal2) after inserting the 9-foot SD card

1. Call Environment.getexternalstoragestate () to determine if an SD card is plugged into the phone and the application has permission to read and write the SD card.Environment.getexternalstoragestate (). Equals (environment.media_mounted)A return value of TRUE indicates that the application has permission to

　　If the camera is available, most of the cards are good, and it is possible that 　　1 Your data cable or port is broken. Try replacing a data line or read it with a reader. 　　2 online USB port voltage shortage Do not use the USB port on the front panel of the computer and try the rear USB port. 　　3 Computer system failure Replace a computer to try or reload the operating system. 　　4 not working correctly Some brands of camera and computer onli

Although the permission to read and write the SD card is stated in the manifest file, However, you still do not have permission when running the program. This is because the SD card itself does not have permission, so you need to modify the permissions of the

My laptop is Dell's d430 and comes with an SD card reader, but the newly purchased sdhc 4G card cannot be read. I know that the electrical definition of sdhc is no different from that of SD, so I should update the software to be compatible with sdhc. Of course, this is just

Import java. io. bufferedReader; import java. io. file; import java. io. fileInputStream; import java. io. fileOutputStream; import java. io. inputStreamReader; import android. content. context; import android. OS. environment; public class Fileservice {/*** Method for storing user passwords ** @ param context * @ param user * @ param psd */public static boolean saveUserInfo (Context context, string user, String psd) {/** SD

= Environment.getexternalstoragestate ();if (State.equals (environment.media_mounted)) {File root = Environment.getexternalstoragedirectory ();File TargetDir = new file (Root,super.getpackagename ());if (! Targetdir.exists ()) {Targetdir.mkdir ();}try {Oos = new ObjectOutputStream (new FileOutputStream (New File (TargetDir, "yxl.txt"));Student Student = new Student ("Xiaoming", 18);Oos.writeobject (student);Toast.maketext (Getapplication (), "Write succeeded", Toast.length_short). Show ();} cat

Bootfile The default download file Bootargs boot parameters passed to the kernel Bootcmd commands executed at auto-start ServerIP server-side IP address IPAddr local IP address Stdin Standard input Devices StdOut Standard output Devices StdErr standard error Device Above is just some of the most basic environment variables, please n

How do I add files to the SD card on the android simulator mobile phone? Add a file directly to the SD card of the simulator in ddms. If an error occurs, such as: failed to push xxxxx.txt on emulator-: Read-Only file system, the error occurs because your sdcard permission is

I found that I could not write files to the USB flash drive/SD card today. I carefully checked that the USB flash drive is read-only. I tried to solve this problem using n methods: 1. chmod U + x/Media/usbdisk The prompt "read-only file system" cannot be changed. 2. sudo Mount-o rw-O remount-o User-T vfat/dev/sdb1/M

First get all the MP3 files under the path path of the SD card and save the file name and size to the list array (this code is defined in the Fileutils Class):/*** Read the name and size of the Mp3 file in the directory*/Public listSdcardroot = Environment.getexternalstoragedirectory (). GetAbsolutePath (); Get the path name of the

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.getc

In this section, we do a very simple demo that allows you to read an image from an SD card and display it in the app.In three steps:1. Set permissions. Add three lines of permission information to the manifest file. uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILES

[Android]android.uid.system cannot read SD card information [GO]In the androidmanifest.xml we can see android:shareduserid= "Android.uid.system"But with this sentence, the SD card can not read and write operations, such as the cre