otg device for android

ComponentName (this, adminreceiver.class);......private void Startdevicemanager () {Intent localintent = new Intent ("Android.app.action.ADD_DEVICE_ADMIN"); Localintent.putextra ("Android.app.extra.DEVICE_ADMIN", this.componentname); Localintent.putextra ("Android.app.extra.ADD_EXPLANATION", "anti-theft photo assistant"); Startactivityforresult (localintent, 0); }OK, here it is. But the problem comes, dig. No, no, what is this? Search through the source code of

This error occurred while running the Android program:　　Failed to install homework.apk on device ' emulator-5554 ': EOFJava.io.IOException:EOFFind information online, the problem is the ADB, probably becauseSolution:One: Open cmd command prompt, execute adb kill-server first, then execute ADB start-serverTwo: 1. Cleanup project, Project->clean2. Right-click the project browser and close the project, then cl

Http://www.pocketmagic.net /? P = 762 Android ADB error: "device not found" on specified tuby Radu motisan posted on June 2nd, 2009 I 've been getting this error way too often recently, so I 've decided to point out some of the causes. 1) using my older desktop pc I cannot use ADB to connect to the Android device, b

The JavaScript method that has been validated can be usedvarDeviceAgent =navigator.userAgent.toLowerCase (); 02.varAgentid = Deviceagent.match (/(iphone|ipod|ipad|android)/); 03.if(Agentid.indexof ("iphone") >=0){ Alert ("iphone"); 05. } 06.if(Agentid.indexof ("ipod") >=0){ . Alert ("ipod"); 08. } 09.if(Agentid.indexof ("ipad") >=0){ Alert ("ipad"); 11. } 12.if(Agentid.indexof ("Android") >=0){ Alert ("

Judging is not pcfunction IsPC () {var useragentinfo = Navigator.useragent;var Agents = new Array ("Android", "IPhone", "SymbianOS" , "Windows Phone", "IPad", "IPod"), var flag = True;for (var v = 0; v 　　Determine what the mobile End Function Getostype () {if (/(Iphone|ipad|ipod|ios)/i.test (navigator.useragent)) {return "IOS";} else if (/( Android) {/i.test (navigator.useragent)) {return "

As we all know, when developing an android project, we need to store data in the data folder of the virtual device when it comes to data access and interaction. Previously, I learned how to upload files to devices in related books. As mentioned above, MP3 and MP4 players need to upload files to audio and video files on devices. The method is as follows: C:> ADB push C: codesamplevideo.mp4/data/samplevideo.m

This article describes how to get the status of your Android device WiFi connection!Add access permissions (in the Androidmanifest.xml file)Java code (mainactivity.java file)Package Com.example.androidtest;import Android.net.connectivitymanager;import android.net.NetworkInfo.State; Import Android.os.bundle;import android.app.activity;import Android.content.context;import Android.util.Log;import Android.view

/** * Determine whether the current device is a mobile phone or tablet, code from Google I/O App for Android * @param context * @return tablet returns TRUE, the phone returns False */ public Static Boolean Istablet (context context) { return (context.getresources (). GetConfiguration (). Screenlayout Configuration.screenlayout_size_mask) >= configuration.screenlayout_size_large

Capture the Android device request API When you carry such a large stack of data, how does PHP emulate this data? customerid:801 clientagent:m351#1080*1800 versionid:5.6.2 Model:generic/anyphone Contentformat:json2 userid:412b46585b10a8b8a8aac6e7f92b8811 token:7531756a785967676c4a6371664b33767531452b356b506e Agency:meizustore01 Clienttest:false content-length:609 content-type:application/x-www-form-urlencod

JS Judgment Device Terminal (Pc,ipad,iphone,android,winphone) and browservarUA =navigator.useragent; varBrowser ={}, Weixin= Ua.match (/micromessenger\/([^\s]+)/i), WebKit= Ua.match (/webkit\/([\d.] +)/i), Android= Ua.match (/(Android) \s+ ([\d.] +)/i), ipad= Ua.match (/(IPad). *os\s ([\d_]+)/i), ipod= Ua.match (/(IPod

During debugging, the following error occurs: Java. Io. ioexception: Unable to upload file: no space left on device. The reason is that my APK is too big. The solution is as follows: Find the simulator directory under the AVD directory C: \ Documents and Settings \ qijianzhou \. Android \ AVD \ advv4.avd Modify the config. ini file Add disk. datapartition. size = 1024 HW. LCD. density = 120 Sdcard. s

, usbserialport.parity_none);7 8 byteBuffer[] =New byte[16];9 intNumbytesread = port.read (buffer, 1000);TenLOG.D (TAG, "Read" + Numbytesread + "bytes.")); One}Catch(IOException e) { A //Deal with error. -}finally { - port.close (); the}Of course, we can add a monitor to the serial port.11Private FinalExecutorservice Mexecutor =executors.newsinglethreadexecutor ();22PrivateSerialinputoutputmanager Mserialiomanager;3344Private FinalSerialinputoutputmanager.listener Mlistener =55NewSerialinp

1. The information of connected equipment is stored in/data/misc/dhcp/dnsmasq.leases2. Its format is:/system ID, no value required/client MAC address/client IP address/client device name/weighted after MAC address, no value required2, refer to the Wifiservie.java Getclientip () method, you can customize this method to obtain the device name, as follows:Reprint Please specify source: Zhou Mushi's csdn blog H

Timer_list: Init_timer (button_timer);Activation timer: Add_timer (button_timer);Note: Setup_timer (button_timer,button_timer_function,test); This can replace the 2 steps above.3. In the interrupt handler function, Mod_timer (button_timer, jiffies+hz/100); 10msNote: The dynamic timer does not need to be released manually, and Mod_timer is automatically released after the timeout is executed. Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduc

Android application Crash automatically captures logs _ automatically saves Crash logs to the local device, androidcrash After the application crash occurs, you need to view the log to identify the problem. However, once the application is released, you need to find a way to analyze the user's crash log. Therefore, we need to capture logs after the crash occurs and upload them to the server for developers t

If Bluetooth is paired and connected manually, get the connected device:1. Check the connection status:Java code int A2DP = Bluetoothadapter.getprofileconnectionstate (BLUETOOTHPROFILE.A2DP); int headset = bluetoothadapter.getprofileconnectionstate (Bluetoothprofile.headset); int health = bluetoothadapter.getprofileconnectionstate (bluetoothprofile.health); 2, depending on whether there is a connection to obtain the connected d

Relativelayoutxmlns:android= "Http://schemas.android.com/apk/res/android"2 Xmlns:tools= "Http://schemas.android.com/tools"3 Android:layout_width= "Match_parent"4 Android:layout_height= "Match_parent"5 Android:paddingbottom= "@dimen/activity_vertical_margin"6 Android:paddingleft= "@dimen/activity_horizontal_margin"7 Android:paddingright= "@dimen/activity_horizontal_margin"8 Android:paddingtop= "@dimen/activity_vertical_margin"9 Tools:context= "Kempff.

If you ' re has this same issue the problem is probably an out-of-date SDK. As of Android 4.2.2 There is a security feature this requires you to confirm the RSA fingerprint of the Connectin G device. As the following screenshot: Update ADB TOOL 1. Open the SDK Manager and update the tools! Then reboot. 2. OR Donwload the ADB from the link: Http://dl.vmall.com/c0b481awh1 http://pan.baidu.com/wap/album/file

/** * Gets the MAC address of the device * * @param AC * @param callback * After successfully acquiring the MAC address, this method is recalled */public static void Getmacaddress (final Activity AC, Final Simplecallback callback) {final Wifimanager wm = (Wifimanager) AC. Getsystemservice (Service.wifi_servi (CE)//If WiFi is turned on after the boot, the MAC information can be obtained directly. return data immediately. Wifiinfo info = wm.getconnectio