how to extract files on android

-disposition:form-data; Name= "File"; Filename= "Storage/emulated/0/test.jpg" content-transfer-encoding: Binary here is the binary data of the picture file--O3FHJ53Z-OKTODUAELFBANU4PZHP4---See familiar, this is the post message format we mentioned at the beginning of the article. That's right! Httpentity is the message format that is responsible for constructing the parameters into HTTP, what format the text parameter is, what format the file is in, and what type, and these formats are fixed. On

Android pull parses xml files and androidpull parses xml files In the android system, many resource files are in xml format. In the android system, the xml is parsed using the pul parser, it is the same as sax parsing (I personall

Android development: several methods of merging files, android The following describes how to merge files, and introduces the specific process of merging files by merging amr files. The file header in amr format is 6 bytes. Theref

The 1,pull parser, which uses the pull parser under Android, works like a sax parser. It provides similar events, such as: start element and end element event. 2, use Parser.next () to enter the next element and trigger the corresponding event. 3, the event is sent as an int value, so a switch can be used to process the corresponding event. 4, when the element begins parsing, call the Parser.nexttext () method to get the value of the next text type no

In Android, the pull parser is used to generate XML files and read XML files. In Android, the Pull parser 1 is used, and the running mode of the Pull parser is similar to that of the SAX Parser. It provides similar events, such as the start element and end element events. 2. Use parser. next () to enter the next eleme

Android uses the pull parser to generate XML files and read XML files. androidpull In Android, the Pull parser 1 is used, and the running mode of the Pull parser is similar to that of the SAX Parser. It provides similar events, such as the start element and end element events. 2. Use parser. next () to enter the next

Description In fact, Android rarely use FTP and server interaction, especially the file upload and download operations, performance first, the entire code is very embarrassing, the basic need to use the native API to operate. There's not much encapsulation here, Just complete the function, after all, FTP is not the mainstream of Android network requests. Gossip is not much to say, on the code. Pack

Android stores read and write files internally, and android reads and writes File read/write operations* Ram memory: The Running memory, equivalent to the computer memory* Rom memory: internal storage space, equivalent to the hard disk of a computer* SD card: external storage space, equivalent to a mobile hard disk of a computerRead and Write

First of all, if you are viewing the Android database file on a real machine, you have to get root permission, so there is no more talking about how to get it. May be the cause of the phone, I get access to the following mobile phone:Although the permissions in the data directory are open, the package permissions under Data do not get the Write permission, which is based on the following workaround:The permission to the package is obtained from the co

Local_path: = $ (call My-dir)Include $ (clear_vars)Local_ldlibs: =-llogLocal_module: = DeviceapiLocal_src_files: = deviceapi.c \Include $ (build_shared_library)Include $ (clear_vars)Local_module: = LibbarcodereaderLocal_src_files: = libbarcodereader.soInclude $ (prebuilt_shared_library)Include $ (clear_vars)Local_module: = libbarcodereader43Local_src_files: = libbarcodereader43.soInclude $ (prebuilt_shared_library)After adding the android.mk part of the third party so file introduced1 include $

Android creates folders, generates files, and writes text files. 1. add permissions first 2. Create a folder, generate a file, and write the text file content codePrivate void initData (){String filePath = "/sdcard/Test /";String fileName = "log.txt ";WriteTxtToFile ("txt content", filePath, fileName );}// Write the string to a text filePublic void writeTxtToFile

Asynchttpclient Open Source Framework Android-async-http is still very convenient. Asynchttpclient This class is typically used to create asynchronous get in an Android application,POST, put and delete HTTP requests, request parameters created through Requestparams instances, respond by overriding anonymous inner class Responsehandlerinterfacemethod is processed.1, see the Code upload filepublic void Upload

My Android advanced tour ------> Configuration identifiers supported by Android SDK (useful reference files) and androidsdk The Android SDK supports the configuration of the flag. Configuration identifier Identifier value Description

/*************************************** **************************************** ************** Author: conowen @ Dazhong* E-mail: conowen@hotmail.com* Http://blog.csdn.net/conowen* Note: This article is original and only used for learning and communication. For more information, indicate the author and its source. **************************************** **************************************** ************/ 1. Introduction to Android audiotrack I

This method is used by the shell and makefile combinationWallpapers: = $ (Shell ls packages/apps/hyst_apps/newbingolauncher_c/default_wallpaper_config/)Product_copy_files + = $ (foreach wallpaper,$ (wallpapers), $ (if $ (findstring customized_config,$ (wallpaper)), \packages/apps/hyst_apps/newbingolauncher_c/default_wallpaper_config/$ (Wallpaper): system/$ (wallpaper), \packages/apps/hyst_apps/newbingolauncher_c/default_wallpaper_config/$ (Wallpaper): system/wallpaper/$ (Wallpaper) ))The first s

This method is used by the shell and makefile combinationWallpapers: = $ (Shell ls packages/apps/hyst_apps/newbingolauncher_c/default_wallpaper_config/)Product_copy_files + = $ (foreach wallpaper,$ (wallpapers), $ (if $ (findstring customized_config,$ (wallpaper)), \packages/apps/hyst_apps/newbingolauncher_c/default_wallpaper_config/$ (Wallpaper): system/$ (wallpaper), \packages/apps/hyst_apps/newbingolauncher_c/default_wallpaper_config/$ (Wallpaper): system/wallpaper/$ (Wallpaper) ))The first s

First, add a permissionIi. Create a folder, generate a file, and write a text file content codeprivate void InitData () {String FilePath = "/sdcard/test/";String fileName = "Log.txt";Writetxttofile ("txt content", FilePath, FileName);}Writing a string to a text filepublic void Writetxttofile (string strcontent, String FilePath, String fileName) {Create a folder, then generate the file, or you will get an errorMakefilepath (FilePath, fileName);String strFilePath = filepath+filename;Write on each

File Transfer is required in the project. The best way to facilitate transmission is to convert the file into a base64 string, and then convert the base64 string into a byte stream and save it in the file. However, this method is simple, but it still needs to be selected based on actual needs. The disadvantage is that it cannot be converted into too many files. Too many files will cause efficiency problems.

Android stores and loads local files (internal storage devices) and android storage devices All applications on Android devices have a directory of files placed in the sandbox. Saving the files in the sandbox can prevent other app

In the Android network programming learning and real-life trip, the implementation of one or more files uploaded to their own built server, then this section, the obvious content of course is how to download the file. This is still implemented using the HttpURLConnection in the java.net package. About the downloaded file, there can be two ways to deal with, one is to save it, the other is to display it, suc