external sensors for android

inti = 0; theString str = ""; the while((i = Fis.read (b)) >0) - { thestr + =NewString (b,0, i); the } the fis.close ();94Toast.maketext (mainactivity. This, "File content =" +str, toast.length_short). Show (); the } the Catch(Exception e) the {98Toast.maketext (mainactivity. This, "failed to read external file", Toast.length_short). Show (); About

", Toast.length_short). Show (); } } Public voidonclick10 (view view) {if(Environment.getexternalstoragestate (). Equals (environment.media_mounted)) {//1. Get the content you want to store//String content = Et_5.gettext (). toString (); //2. Get the external storage directory with package name--only to the root directoryString Sdpath =environment.getexternalstoragedirectory (). GetAbsolutePath (); //Toast.maketext (activitydata.this, "sdpath="

SOURCE Blog: http://www.devahead.com/blog/2012/01/saving-the-android-webview-cache-on-the-sd-card/The main idea is to indirectly change the results obtained by WebView acquiring the cache directory by the override Getcachedir () method at the activity level;Getcachedir () and Getfilesdir () are often used when saving the cache (file), which returns the default result as/data/data/package name/cache (files).However, this can be very internal Storage, a

Android Studio provides three ways of importing external resources:1. Library Dependency – Online Add, Internet download required2. File Dependency – add some jar packages locally (to copy the jar package to the project's Libs folder first)3. Module Dependency – Add a library project with source code locally (to import moudle the library project into the project first)The third way, the import will report s

??"Android ormlite foreigncollection Associated External collections"Android Ormlite Foreigncollection The ability to correlate external collections to data structures or collections that are deeper and more hierarchical, and that data models penetrate and intersect each other. It is especially convenient to solve comp

When I wrote the native program in studio today, I found that version 2.2 introduced a External build to build the native project.The most intuitive performance is that the source code files of C + + is not in a project folder with Java files. And with the previous configuration in the Gradle, and then automatically generated makefile compared to the flexibility greatly increased, no longer have to look for the egg makefile corresponding Gradle statem

\inputmanagerservice.java to display the notification,Further analysis of code discovery is to control the display of notifications in the Deliverinputdeviceschanged method.Inputmanagerservice.javaprivate void Deliverinputdeviceschanged (inputdevice[] oldinputdevices) {........ if (Missinglayoutforexternalkeyboard) {if (missinglayoutforexternalkeyboardadded) {if ( multiplemissinglayoutsforexternalkeyboardsadded) {//We have more than one keyboard missing a layout, so drop the//user At the generi

files like your phone's own file system browser.Whether it's an internal SD card or an external SD card, it's a phone's external storage, and the phone's internal storage and external storage share the same device.Internal Storage Path:All apps installed to the phone will generate a package name folder in the Data/data directory, which is the path to the interna

! = null strarray.length >= 5) {String result = Strarray[1].replace ("/.a Ndroid_secure "," "); LOG.I ("Commonuitls", result); return result; } } if (Linestr.tolowercase (). Contains ("EXTSD". toLowerCase ())) {string[] Strarray = Linestr.split (""); LOG.I ("Commonuitls", strarray[1]); return strarray[1]; } if (p.waitfor () = 0 p.exitvalue () = = 1) {LOG.E ("Commonuitls",

/PlayAudioByWWW.csSummary of myWe know that when using www loading assetbundle, it is not possible to have Chinese name and Chinese path , but the method used above, why the Chinese file can be loaded and played properly?The above is simply loading the file via WWW, and the loaded file is not in Unity's assetbundle format, so the notation is not the same as loading assetbundle.Problems that existWhen the Ogg format music file is loaded via WWW, it will be reported "streaming of ' Ogg ' on this p

. second, The first step is to execute the onresultactivity () function in activity A, regardless of the getactivity () that you used in fragment B. onresultactivity (), or direct use of onresultactivity (). Span style= "font-family:monospace; font-size:14px; White-space:pre-wrap "> If you rewrite the Onactivityresult method of activity a This program only needs to modify my fragment D and jump activity B, do not need to modify activity A, to meet my needs ~ ~ ~Recording.How to impl

); Intentfilter.addaction (INTENT.ACTION_MEDIA_NOFS); Intentfilter.addaction (Intent.action_media_button); Intentfilter.addaction (Intent.action_media_scanner_scan_file); Intentfilter.adddatascheme ("file"); Registerreceiver (Broadcastrec, intentfilter);} Private final Broadcastreceiver Broadcastrec = new Broadcastreceiver () {@Override public void onreceive (Context Context, Intent Intent) {String action = intent.getaction (); LOG.D ("mediaaction", action); if (Action.equals

There are many ways to achieve, according to the steps to see which kind of, online said what pick-up card, in fact, is to turn AV into UVC, now on the market a lot of cameras directly is already UVC, in Windows Plug and Play.Android is also Linux, this is a good run.1. First download the Android USB detection program, insert the UVC camera, in the program to see whether the new node in the/dev/video, or/BUS/USB under the new node. If no video node is

The Android system can get the path of the memory card through Environment.getexternalstoragedirectory (), but now there are a lot of phones built in a storage space, but also support the external SD card insertion, This through the Environment.getexternalstoragedirectory () method to obtain is the location of the internal memory card, the need to obtain the path of the

Today on a new machine, configure the Android environment. System for Win7 flagship 64-bit, downloaded the JAVA8 installation package "Jdk-8u40-windows-x64.exe", installed on the D-disk:When the installation is complete, right-click on the desktop to open the Command line window, enter "Java-version", "java" command no problem:Enter the "Javac" command to indicate that "javac is not an internal or external

1. android manages multimedia files (audio, video, and image. In the/data/com. android. providers. in media, find the database file and open external. for more information about the db file, see the ing between the file path (_ data) and the Uri ID (_ id) in the media table. Ii. URI and file conversion 1. obtain the file path [java] string myImageUrl = "content:

: Access to SDcard must include access to SDcard in Androidmanifest.xmlif (Environment.getexternalstoragestate (). Equals (environment.media_mounted)) {File Sdcarddir = Environment.getexternalstoragedirectory ();//Get SDcard DirectoryFile SaveFile = new file (Sdcarddir, "a.txt"); FileOutputStream OutStream = new FileOutputStream (saveFile); Outstream.write ("Test". GetBytes ());Outstream.close ();}The Environment.getexternalstoragestate () method is used to get the state of the sdc

' JAVAC ' is not an internal or external command, nor is it a program or batch file that can be run. Problem Solving method Sharing!' JAVA ' is not an internal or external command, nor is it a program that can be run or a batch file solution similar.Reason one: No jdk installed, only JRE installed 1JDK1.7.0_60+JRE is complete, if the JDK is not installed, the cmd inside the input JAVAC will prompt