how to access sd card on android phone

Reprint Please specify source: http://blog.csdn.net/l1028386804/article/details/47375595At present, many Android phone software in the market has the function of clearing SD card cache, such as 360, Jinshan and so on. So how does the software implement the ability to clean up the SD

Formatter.formatfilesize (mainactivity.this, blockSize * totalblocks); /** * Obtain SD card remaining capacity, you can use the size * * @return/private String getsdavailablesize () {File path = Environment.getexternals Toragedirectory (); Statfs stat = new Statfs (Path.getpath ()); Long blockSize = Stat.getblocksize (); Long availableblocks = Stat.getavailableblocks (); Return Formatter.forma

Android differentiate SD does the card have a method that is now mounted? This article describes an android -differentiated SD card that is not currently mounted by the method that touches the

Writestreamtosdcard (String dirpath,string filename,inputstream input) {file file=NULL; OutputStream Output=NULL; Try { //create a directory;Createdir (Dirpath); //create a file on the created directory;File = CreateFile (dirpath+filename); Output=Newfileoutputstream (file); byte[]bt=New byte[4*1024x768]; while(Input.read (BT)!=-1) {output.write (BT); } //Refresh the cache,Output.flush (); } Catch(IOException e) {e.printstacktrace (); } finally{

Android gets a way to monitor SD card status The example in this article describes how Android gets to listen for SD card status. Share to everyone for your reference. The specific analysis is as follows: 1. Register Storageeven

. If you use adb shell, you generally do not have the write permission for the root directory. You cannot create a directory. If you do not have this directory/mnt/sdcard, you cannot mount the directory. 4. If you use the adb shell, use the remount command to mount a partition of the SD card. For details about the specific operation, see my adb command. Because it is not written into the configuration file,

Android obtains the total capacity of the SD card, available size, total body memory capacity and available size, and androidsd Public long getSDTotalSize () {/* get the memory card path */File sdcardDir = Environment. getExternalStorageDirectory ();/* StatFs View File System space usage */StatFs statFs = new StatFs (s

This article is an example of how Android obtains SD card and cell phone ROM capacity. Share to everyone for your reference, specific as follows: Here is a simple example to get the capacity of the SD card and the capacity of the cell phone ROM, the code is as follows:

Hello everyone, I finally met you again after seven days of the national day. Today I want to share with you the broadcastreceiver-based SD card loading and unloading instance. By default, the Android device sends a notification message on the status bar of the Android device when we plug in USB to connect to the compu

An example of this article describes the Android programming method for file read and write on SD card. Share to everyone for your reference, specific as follows: A lot of knowledge can be extrapolate only after you have a real understanding of mastery. Java in the file operation and the Android

The first step is to increase the access rights of the SD card in Androidmanifest.xmldoes the SD card existPrivate Boolean Existsdcard () { if (android.os.Environment.getExternalStorageState (). Equals ( Android.os.Environment.MEDIA_MOUNTED) { return true; } e

Android tools ------) SD card-related auxiliary classes Import java. io. file; import android. OS. environment; import android. OS. statFs; // SD card-related auxiliary class public cla

Android parses the APK file on the SD card and android parses the sdapk public void parseApk(Context context, String apkFilePath){ PackageManager packageManager = context.getPackageManager(); PackageInfo packageInfo = packageManager.getPackageArchiveInfo(apkFilePath, 0); if(packageInfo != null){ packag

How do I create an SD card for my Android emulator?We enter Mksdcard 512M D:\Program Files (x86) in the command line \android\sdcard.imgThis has a sdcard.img size of 512M in our D:\Program Files (x86) \android directoryThe SD

============ Problem Description ============Because learning needs to look at the old Luo's video about the data stored in the SD card to write the part of the file to almost completely comply with the knock code results on the pad test and expected to have a difference originally should be stored in the SD card file

Android SDK + eclipse provides the SD card simulation method. The usage is as follows: 1. Create an SD card image file. Mksdcard 1024 M sdcard. img This command will generate an sdcard. imgfile in the current directory, which is the

The upload function of an image must provide the path of the uploaded image in the SD card, summarize some columns on the Internet, and modify the code. For more information, see, hope to help you Recently, I am working on an image upload function. I need to provide the path for uploading images to the SD card. I have

}Else if(Status.equalsignorecase (environment.media_nofs)) { -Toast.maketext (Techolite. This, "Although the SD card exists but its file system is not supported", Toast.length_long). Show (); -}Else if(Status.equalsignorecase (environment.media_unmountable)) { -Toast.maketext (Techolite. This, "Although the SD card is

· Sometimes using the Android simulator to simulate SD card related operations, in Eclipse can directly view the SD card directory;First, the new simulator to create the SD card, the si

Address: http://www.cnblogs.com/TerryBlog/archive/2010/06/26/1765910.html SD card for Android Simulators In this example, you can directly specify the music file in the SD card for operations. How can we use the SD