why can t move apps to sd card android

----Main.java publicclassmainextendsactivity{privatetextviewtextview;private buttonbutton;privatelistviewlistview;publicfilecurrentparentfile;public file[]currentfiles;publicstaticstringsdcarddir;static{try{// The path of the SD card Sdcarddir=environment.getexternalstoragedirectory (). Getcanonicalpath ();} catch (ioexceptione) {e.printstacktrace ();}} @Overrideprotected voidoncreate (bundlesavedinstancest

That's what we've been getting before.Before Android API18: Fs.getavailableblocks () *fs.getblocksize ()Currently/** gets the system available memory **/@SuppressLint ("Newapi") Private String Getmemfree () {StatFs fs = new StatFs (environment.getdatadirectory (). GetPath ()); return Formatter.formatfilesize (This, (Fs.getavailablebytes ()));} /** gets the SD available memory **/@SuppressLint ("Newapi") Pri

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

+ "/" +filename,dir+filename+ "/");}Continue}File OutFile = new file (Mworkingpath, fileName);if (Outfile.exists ())Outfile.delete ();InputStream in =null;if (0!=assetdir.length ())in = Getassets (). Open (assetdir+ "/" +filename);Elsein = Getassets (). open (FileName);OutputStream out = new FileOutputStream (outFile);Transfer bytes frombyte[] buf = new byte[1024];int Len;while (len = In.read (buf)) > 0){Out.write (buf, 0, Len);}In.close ();Out.close ();}catch (FileNotFoundException e){E.printst

We were stitching the XML file manually in the previous section, but there was a problem with that in the previous section, such as:Insert the contents of the message sbuffer.append ("I added a So in this section we use the XML serializer to stitch up the text message content.The following code is how to stitch a file with an XML serializer:public class Mainactivity extends Activity {listAs you can see, I intentionally added a body to the content of the text message.Export to query the backup fi

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

How to determine files? You can use Cursor to traverse the database and compare the value of the INTERNAL_CONTENT_URI field. This is a Uri, which stores the complete path of the multimedia file on the Android mobile phone SD card. [Java] Copy codeThe Code is as follows: Uri originalUri = MediaStore. Images. Media. EXTERNAL_CONTENT_URI; // If it is a Video, it is

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

The Android program function Copies files in the assets folder to the SD card (including subfolders) of the mobile phone and androidassets. Recently, the function is to copy all files (including sub-files) in the asset folder to the specified directory. The method used is nothing more than AssetManager. However, the problem here is that both subfolders and subfol

This article for everyone in detail under the Android Read assets picture resources to save the specific implementation of SD card, interested members can refer to Ha, I hope to help you have copy code code as follows: public class Readbitmap { public void ReadByte (context C, String name, int indexint) { byte[] b = null; int[] Intarrat = C.getresources ().

Android deletes SD card files and creates folders and files Package com. jiub. client. mobile. addphoto; import java. io. file; import java. io. fileNotFoundException; import java. io. fileOutputStream; import java. io. IOException; import android. graphics. bitmap; import android