android bluetooth auto connect paired device

Recently do an Android application, with Bluetooth signal control an instrument, through a Bluetooth to the serial port device, send Bluetooth signal, and then converted to serial command sent to the instrument. The Bluetooth

native code, while in the green is Java code. The top thread: inputdevicereader is the control center of the entire input process (in Android 4. x, this thread is in inputmanager. cpp ). This thread reads the input devices in the/dev/input directory of Linux Through eventhub: getevent () to obtain the hardware key input. Based on a key layout map associated with each input device, the key input is mapped t

, new object [] {29}); Java. lang. system. out. println ("service socket established successfully"); playthread. start ();} catch (illegalargumentexception e) {// todo auto-generated catch blocke. printstacktrace ();} catch (illegalaccessexception e) {// todo auto-generated catch blocke. printstacktrace ();} catch (invocationtargetexception e) {// todo auto-gener

OverviewSince Android 5.0, Google has added support for Android phones as a low-power Bluetooth peripheral, the service side. Enables mobile phones to communicate with each other through low-power Bluetooth.Development stepsIn fact, this function only needs to be divided into setting up the broadcast and setting up a server two parts to completeSetting up the ser

The Android system will first read the value of the btm_def_local_name, and if it is empty, use "Ro.product.model" as the Bluetooth device name.system/bt/btif/src/btif_dm.cc#define PROPERTY_PRODUCT_MODEL "ro.product.model"......static char* btif_get_default_local_name() { if (btif_default_local_name[0] == '\0') { int max_len = sizeof(btif_default_local_name)

In Android, the listening of Bluetooth device buttons is the same as the listening of general system buttons, but it only processes different keyevents. Here we will talk about the value of the previous and next keyevents sent by bluetooth, Listen to and perform corresponding processing. Public Boolean onkeydown (I

The priority rules for the current Android WiFi auto-connect are as follows:1, the priority value of the range is set to [0,1000000], if beyond this range will reset;2, the most recently connected AP has the highest priority, in the automatic connection will first try to connect it;3, not connected but scan to the AP,

One. Connect the Android device to the computer and install the associated driver. Two. Set the user's environment variable. "My Computer"-->> "Properties"-->> "Advanced"-->> "Administrator's user environment variable"-->> "Path" Click on the "Edit" button, at the end of the "Variable Value" column, enter the absolute path of the platform-tools and tools under

[Transfer from]http://blog.csdn.net/kuanxu/article/details/7444874Recently, because you want to debug your code on another Android device, check its log on your native PC. Two machines away from the relatively far, can not be directly connected with the USB, so find a lot of information on the Internet, the most find using the ADB Connect method to solve the prob

1. First connect your Android device with USB, then run the command at the terminal, it can start the device's 5555 port so that it can connect on the network.55552. Disconnect the USB connection now and make sure the device and your computer are connected to the same wirele

{idvendor}== "05c6", attr{idproduct}== "6774", SYMLINK+= "Libmtp-%k", ENV {id_mtp_device}= "1", env{id_media_player}= "1" vim/etc/udev/rules.d/51-android.rulesattr{idvendor}== "05c6", ATTR{ idproduct}== "6774", mode= "0666"The ID obtained in the third step is used here.5. Restart the Udev serviceService Udev RestartSo far, one of my mobile phones has been able to connect to Ubuntu over the MTP protocol. It is important to note that the above operation