how to unzip files on android

Android uses a file system similar to disk-based file systems on other platforms. This article describes how to use the Android file system to read and write files through the file API.The File object is suitable for reading or writing large amounts of data in the order from start to finish without skipping. For example, it is suitable for picture

Recently, I was in the arms of Android studio from Eclipse, but I was having trouble developing a map-related app to add the. jar and. So library files for the gold Map API. Simply copy and paste in eclipse, but how do you introduce it in Android studio?The solution is as followsThe first step: Add the Gold Map jar package Android_map_2.1.4.jar to the Libs folder

Android uses the AsyncHttpClient framework to upload files and uses HttpURLConnection to download files. The android-async-http open-source framework of AsyncHttpClient is very convenient. The AsyncHttpClient class is usually used in android applications to create asynchrono

"Share" Android Studio dedicated file Conversion tool: Save ANSI files in bulk as UTF-8 files without BOMWhen compiling Java files under Andoird Studio, there are often errors like the following:Error: (29, 43) downloading message: Ke policy home UTF-8 fermium Âμà switches Å è¡#̈亞 槧 hao 勫 瓧 quilting?Here, share a too

. listview_animation2); arrayadapter Animation2.xml layout file: Animation declaration file: Scale_anim.xml Animation associated files: Animation2_drawable.xml The comments in the Code have been quite clear, so I will not say much. Note that in the layout file, the positions of the animation declaration file and the animation associated file are all in the Res/anim folder. The above only shows a scaling animation. What other common animations do

The following error occurred using the Android Studio Packaging application:Note: Some of the input files use or overwrite outdated APIs.Note: For more information, please recompile using-xlint:deprecation.Note: Some input files use an unchecked or unsafe operation.Note: For more information, please recompile using-xlint:unchecked.After compiling to tell me this

.update (buffer, 0, numread);} Fis.close (); return tohexstring (Md5.digest ());} catch (Exception e) {System.out.println ("error"); return null;}} 16 binary converted to string public static string tohexstring (byte[] b) {char hex_digits[] = {' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 ', ' A ', ' B ', ' C ', ' D ', ' E ', ' F '}; StringBuilder sb = new StringBuilder (B.length * 2); for (int i = 0; i The use of asynchttpclient is also able to upload, download, delete.Ju

, continue to judge whether the mcontentparent object is null. If not, call the generatelayout () method to create the mcontentparent object.The generatelayout () method is as follows: Protected viewgroup generatelayout (decorview decor) {// apply data from current theme. //... 1. Set the features value based on the Android: theme = "" of requestfreature () and activity nodes. // 2. Set the features value based on the specified features value, that i

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

This section describes the file formats of assets and res in Android and how to obtain the file content. The file size limits of assets and raw folders and solutions are also described. 1. Introduction to related folders In the android project folder, the main resource files are stored in the res folder. The assets folder is a native file that is not compiled and

Source: Android Ndk compile (import). A file and compile multiple so filesfirst, compile a static library libstatic_android.aLocal_path: = $ (call my-dir) include $ (clear_vars) local_module := static_android local_src_ FILES:= libstatic_android.a include $ (prebuilt_static_library) include $ (clear_vars) Local_module := fpdfembedsdklocal_src_files:= xxxx.cpplocal_c_includes:= $ (local_path)/... /

Help a netizen to solve the problem of the R file can not be generated, collected some materials special finishing as follows, beginners refer to others code is very easy to appear this kind of problem, is generally an XML file error, can not be correctly parsed.The Gen directory could not be updated, or the R.java file in the Gen directory could not be generated1, the use of the Gen directoryThe Android Gen Directory R.java is not created by the user

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