how to access sd card on android phone

[] 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 care of it.Because assuming that you read 40kb

-- --Delete a fileFileName = "/sdcard/myimage/" + image;Remove the SD card folderSD Card write: http://blog.csdn.net/zhaoyazhi2129/article/details/8994295Android Delete SD card file

If you use Google's own simulator or the real machine debugging, the SD card directory is/mnt/sdcard. This is a belief that we all know.but today with Genymotion debugging, found at all not open/mnt/sdcard This directory, at that time also did not pay attention to other information, think is adb, eclipse what problem, After restarting them still can't open, after a struggle, found an important clue! Oh, it

Sometimes, when the program reads and writes external data, the SD card status needs to be monitored to prevent exceptions. We can use registration broadcast for the SD card status. The following is a classic example in the document; // Listen to sdcard status broadcast broadcastreceiver available; // sdcard available

If you want to use SD card during development, you must specify There are two ways to create an SD card. One is to directly enter the size to be created and the ADT is automatically created. The other is the image file of the specified sdcard. Use the mksdcard.exe tool in sdkto create an image file for sdcard. For

(). toString (). Trim ());Edit1.settext ("");}});Read.setonclicklistener (New Onclicklistener () { @Overridepublic void OnClick (View v) {Edit2.settext (read ());}});}private void Write (String content) {try {if (Environment.getexternalstoragestate (). Equals (environment.media_mounted)) {Get the directory of the SD cardFile Sdcarddir = Environment.getexternalstoragedirectory ();File TargetFile = new file (Sdcarddir.getcanonicalpath () + file_name)

Read the SD card file information and add it to the listview to display it: Listview obtains the information of the SD FileCode: List Draw different images based on filetype:

Objective:Use the activity of the Openfileoutput () method to save the file, the file is stored in the mobile phone space, the general phone storage space is not very large, storage of small files is OK, if you want to store large files such as video, it is not feasible. For large files like video, we can store it in SDcard. What is sdcard for? You can think of it as a removable hard drive or USB stick.To use SDcard in the simulator, you need to first create a SDcard

Public long getsdtotalsize () {/* Gets the memory card path */File sdcarddir= environment.getexternalstoragedirectory (); /*statfs See File system space Usage */StatFs statfs=new StatFs (Sdcarddir.getpath ()); Long blocksize= Statfs.getblocksizelong (); Long Totalsize=statfs.getblockcountlong (); return blocksize*totalsize;} /** * Get the remaining capacity of SD

Private Bitmap Getdiskbitmap (String pathstring) {NBSP;NBSP; bitmapbitmap=null ;NBSP;NBSP; try NBSP;NBSP; NBSP;NBSP;NBSP;NBSP;{NBSP;NBSP; filefile=new file (pathstring); if (file.exists ()) { Bitmap = Bitmapfactory.decodefile (pathstring); NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;NBSP;}NBSP;NBSP; }catch (exceptione) NBSP;NBSP;NBSP;NBSP;{NBSP;NBSP; //todo:handleexception NBSP;NBSP; } r

public static final String temp_photo_file_name = "Temp_photo.jpg";private static String Msdrootpath = Environment.getexternalstoragedirectory (). GetPath (); /** * Delete cached images and directories for SD card or phone * /public void DeleteFile () { log.i ("INFO", msdrootpath+ "/" +temp_photo_file _name+ "========================"); File Dirfile = new file (msdrootpath+ "/"

. Propertyconfigurator. getconfigurator (this). Configure (); 4. Put the microlog. properties file in the assets folder. Note: The assets folder is the same as the res folder. Then change the microlog. properties file to the following: Microlog. Level = debugMicrolog. appender = logcatappender; fileappenderMicrolog. formatter = patternformatterMicrolog. formatter. patternformatter. pattern = % C [% P] % m % t 5. Write log records Logger. debug ("My debug "); 6. Add

The specific usage is as follows: 1. Download Download the http://code.google.com/p/microlog4android/downloads/list and microlog. properties files to the microlog4android-1.0.0.jar 2. Create a logger object Private Static final logger = loggerfactory. getlogger (main. Class ); 3.ProgramThe initialization method in the oncreate method of the first activity Propertyconfigurator. getconfigurator (this). Configure (); 4. Put the microlog. properties file in the assets folder. Note: Th

Nonsense not much said, directly to everyone to paste the code, the specific code as follows Permissions The above is a small part of the introduction of the Android database file access to the storage card method, I hope to help you, this article is not good to write please heroes forgive me!

This example describes Android's approach to acquiring information about mobile phone SIM card operators, which is of practical value for Android programming. Share for everyone to use for reference. The specific methods are as follows: The main functional code is as follows: /** * Get SIM card operator * * @param context * @return /public static St