android read file from external storage example

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Based on Android, read the A.txt file in the assets directory and analyze it deeply _android

Android reads the contents of the assets file, usually using the Getasset.open () method, and passing the path of the file as a parameter, and when we parse the file in a directory when we need to parse it, for example: the contents of the A.txt

"Go" when Android adb shell operation appears "XXX ... Read-only File System "solution--good

Original URL: http://blog.csdn.net/whu_zhangmin/article/details/25364349When your phone is connected to your PCADB shellSuRm-r/system/app/launcher2.apkTip: RM failed for/system/app/launcher2.apk, read-only file systemWorkaround:Mount-o remount Rw/systemWhich is to re-mount the/system partition as a read-write partitionIf you want to revert to

Modify the Android system file with read-only permission

Recently, I am working on Android-ndk development. Because of the need to involve the dynamic library (SO) issue, I need to read and write mobile phone files. I found that the mobile phone file system did not allow writing and I searched for it. Solution: Enter $ mount on the terminal 1: It can be found that only the re

Android file read and write operation

Read the file data in the assets is = getResources().getAssets() .open("读取的文件名"); new InputStreamReader(is,"utf-8"); new BufferedReader(isr); string=""; while ((stringnull) { System.out.println(string); } Read

ArcGIS for Android read shp file Chinese garbled solution

Set the registry default character, you can solve the Chinese garbled problem.' Dbfdefault ' Setup method1. Start-run, enter "Regedit" to open the registry.2. If you are using the 10.x version of ArcGIS Desktop, navigate to "My Computer\hkey_current_user\software\esri\desktop 10.x" (if it is a previous version of 9.3.1, navigate to ' my Computer\hkey_current_user\software\esri ').3. Create the item ' Common ', then create ' CodePage ' entry, add ' string ', Name: Dbfdefault, Health value: UTF-8.

The first way for Android to read and write files (file mode)

File to save the data, save the path to/data/data/1 Public voidSave () {2String data = "Data to save";3FileOutputStream out =NULL;4BufferedWriter writer =NULL;5 Try {6out = Openfileoutput ("Data"), context.mode_private);7writer =NewBufferedWriter (NewOutputStreamWriter (out));8 writer.write (data);9}Catch(IOException e) {Ten e.printstacktrace (); One}finally { A Try { - if(Writer! =NULL) { - writer.close (); the } -}Catch(IOException

Android Search SD Card File Development Example _android

We often need access to the contents of the SD card in the development of Android, and because there are so many files, we want to search the SD card. This article gives an example of an Android development that demonstrates how to search for files in an SD card. Instance interface First let's see what the interface looks like when the program is running: Se

android--file read/write

(String contentstring) {try {FileOutputStream stream = Openfileoutput ("A.txt", mode_private);Stream.Write (Contentstring.getbytes ());Stream.Close ();} catch (FileNotFoundException e) {TODO Auto-generated catch blockE.printstacktrace ();} catch (IOException e) {TODO Auto-generated catch blockE.printstacktrace ();}} Public String readdate () {String Str=null;try {FileInputStream stream = Openfileinput ("A.txt");Bytearrayoutputstream BAOs = new Bytearrayoutputstream ();byte[] buffer = new byte[1

Simple example of resource file usage in Android _android

This example describes the usage of resource files in Android. Share to everyone for your reference, specific as follows: Use of resource files between XML files Reference format: Attribute= "@[packagename:]resourcetype/resourceidentifier" Example There are Strings.xml, Color.xml, dimen.xml files, using the parameters in them Ii. r

Using the. So library file (for example, libsqlite. So) in the Android system for ndk Development)

Unlike liblog. So, Android does not directly open libsqlite. So for external use. Although Android provides a Java interface for accessing SQLite, you need to access SQLite using C language in ndk.There are two methods: First, use the source code sqlite3.h and sqlite3.c.Download the SQLite. Git library from the android

A simple example of how Android uses a vcard file _android

The example in this article describes how Android uses a vcard file. Share to everyone for your reference, specific as follows: FileOutputStream OS = null; try {os = VCardTest.this.openFileOutput ("android.vcf", mode_private);} catch (FileNotFoundException E1) {//TODO Au To-generated Catch block E1.printstacktrace (); } OutputStreamWriter writer; try {wri

Android custom View and its example in layout file (2)

combination with the example above, the Activity gets the focus when it enters the CustomViewActivity. At this time, the Activity will request the system to draw its layout, this request is processed using the Android framework, provided that CustomViewActivity must provide the root node of the layout, from CustomViewActivity. java shows that this Activity provides R. layout. customview_layout, and the roo

Android vcard example to generate a vcf File

.addPhone (Contacts. Phones. TYPE_MOBILE, "15651865008", null, true );// Create vCard representationString vcardString;VcardString = composer. createVCard (contact1, VCardComposer. VERSION_VCARD30_INT );// Write vCard to the output streamWriter. write (vcardString );// Writer. write ("/n"); // add empty lines between contacts// Repeat for other contacts//...Writer. close ();Toast. makeText (c, "the SD card has been imported! ", Toast. LENGTH_SHORT). show ();} Catch (UnsupportedEncodingException

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