how to use sd card as default storage on android

This article is an example of how Android determines whether an SD card is mounted or not. Share to everyone for your reference. Specifically as follows: Provides a listener method Broadcastreceiver setting Intentfilter as: intent.action_media_mountedIntent.action_media_ejectIntent.action_media_removed You can then implement your startup logic in the public vo

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

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

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

Suppose the SD card folder is in/mnt/sdcard when Google comes with a simulator or a real machine debug. This is a belief that we all know.but today when debugging with Genymotion. found that the/mnt/sdcard not open the folder, at that time did not pay attention to other information. Think it is the ADB, eclipse what the problem, after restarting them still can't open, after a struggle, found an important cl

This example mainly implements Android to get the data in the Assets folder and write it to the SD card, which is mainly to read the database in the Assets folder and write it to the SD memory card. The complete sample code is as follows: Import Java.io.File; Import Ja

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

This paper illustrates the method of realizing SD card reading database with Android programming. Share to everyone for your reference, specific as follows: First add permissions to the Manifest: Then add the method in Mainactivity: Sqlitedatabase db; private final String Database_path = android.os.Environment. Getexte Rnalstoragedirectory

If nandflash fails to be written, or the wrong Bootstrap is written, the system cannot be started or connected to Sam-BA by USB, but jlink is not available at hand, you can try to use the SD card startup method to restore the data.After downloading the attachment and placing it in the root directory of the SD

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

ImportJava.io.File;ImportAndroid.os.Build;ImportAndroid.os.Bundle;Importandroid.os.Environment;ImportAndroid.os.StatFs;Importandroid.app.Activity;ImportAndroid.text.format.Formatter;ImportAndroid.view.Menu;ImportAndroid.widget.TextView; Public classMainactivityextendsActivity {@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate); Setcontentview (R.layout.activity_main); File Path=environment.getexternalstoragedirectory (); StatFs Stat=

Saveimageinbackgroundtask method to modify Globalscreenshot.java: String Imagedir = Environment.getexternalstoragepublicdirectory (environment.directory_pictures). GetAbsolutePath ();1, JB2 modified to: String Imagedir = Storagemanager.getdefaultpath () + '/' + environment.directory_pictures; 2, JB3. TDD modified to: Import com.mediatek.storage.StorageManagerEx is also required;String Imagedir = Storagemanagerex.getdefaultpath () + '/' + environment.directory_pictures; 3, KK modified to: (1) Imp

Add Permissions in Manifest first"android.permission.WRITE_EXTERNAL_STORAGE" /> "android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />Then add the method in MainactivitySqlitedatabase DB; PrivateFinal String Database_path =android.os.Environment. getExternalStorageDirectory (). GetAbsolutePath ()+"/vote"; PrivateString Database_filename ="db_vote.db";//Initializing the database Privatesqlitedatabase OpenDatabase () {Try{String DatabaseFileName= Database_path +"/"+Database_filename; File dir=NewFil

Create a shell script for the android SD Boot Card #! /Bin/bashexport lc_all = CIF [$ #-ne 1]; then Echo "Usage: $0

static final int least_size_of_sdcard = ten * MB; /** get picture from cache **/public static Bitmap getImage (final string imageUrl) {final string path = Getcachedirectory () + "/" + converturltofilename (IMAGEURL); LOG.I (TAG, "GetImage filepath:" + path); LOG.I (TAG, "GetImage URL:" + URL); File File = new file (path); if (file.exists ()) {//LOG.I (TAG, "GetImage file exists"); Bitmap bmp = null; try {//width becomes 1/3 of the original. High also becomes 1/3

When the Android system is started, it will automatically detect the SD card files and collect music files to generate a database file. We only need to access the information in the database table to obtain the required File Code as follows: Obtain the cursor object to access the media resources in the cursor. If (cursor. moveToFirst () {do {String title = curso

This article describes how to save the image resources of android Assets to the SD card. If you are interested, refer to the following:Copy codeThe Code is as follows: Public class ReadBitmap {Public void readByte (Context c, String name, int indexInt ){Byte [] B = null;Int [] intArrat = c. getResources (). getIntArray (indexInt );Try {AssetManager am = null;Am =

Export the database in the android program to the SD card Private void copyDBToSDcrad () {String DATABASE_NAME = "database file name"; String oldPath = "data/com. packagename/databases/"+ DATABASE_NAME; String newPath = Environment. getExternalStorageDirectory () + File. separator + DATABASE_NAME; copyFile (oldPath, newPath );} /*** copy a single file ** @ param

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