headset plug

From: http://embed.chinaitlab.com/J2ME/877029.html Recently, I was working on a Marvell project and encountered a hot plug-in problem. So I took a look at the relevant code. I would like to make a contribution here. Here we take the PXA code as an example. The entire framework is simple and clear. The upper layers are headsetobserver. Java and hookswitchobserver. java, They will directly read the state of a specific device in/sys/class/switch/, such a

What is Bluetooth? Bluetooth is the origin of the Tenth century unification of Denmark and Norway's Nordic Viking king Harald Bluetooth, because the king likes to eat blueberries, gums are blue every day, so called Bluetooth. Modern Bluetooth technology is developed by Ili Xin (Ericsson) A short-range wireless interface, and in 1998 with IBM, Intel, Nokia, Toshiba Five manufacturers set up Bluetooth SIG Bluetooth alliance (Bluetooth Special Interest Group). And the main three features of Blueto

Headset resurrection (Entire Process) Of course there should be a pair of ear plugs for children who like to listen to songs, so that they can truly enjoy wonderful music. But the ear plug is quite bad. Maybe only one ear is ringing in a day, but the lead of a pinch and a motion plug will occasionally ring, as a matter of fact, you may be able to get together wit

In the computer use, the sound can be normal to hear the voice, but the headset, heard is a murmur, can not be used normally. Sound can play the voice, then the sound card is no problem, replace the headset there is a murmur, all the decision is the headset problem. The headset can be removed for test use on other com

A lot of people in the Bluetooth headset when charging is always careless, general Bluetooth headset charging 2 hours is good. The direct consequence of long charging time is that the machine board aging or even burned out, a variety of inexplicable machine failures, such as standby time shortened, frequent disconnection, call distance shortened, unable to boot, etc., so please take care of your machine, do

to manually write the code to register the broadcast.First, create a subclass of BroadcastReceiver to listen to the plug-in and pull-out of the headset:[Java]Copy codeThe Code is as follows: public class HeadsetPlugReceiver extends BroadcastReceiver {Private static final String TAG = "headsetplugreceivreceiver ";@ OverridePublic void onReceive (Context context, Intent intent ){If (intent. hasExtra ("state

The new headset sounds good. However, it is always unsatisfactory to use the same type of ear plug as a friend for a period of time. The bass is tight and stiff, the sound is soft and plump, And the burrs of the treble are full. Why? Because this new headset has not been renewed!So what is headset? We all know that new

broadcast.First, create a subclass of BroadcastReceiver to listen to the plug-in and pull-out of the headset:[Java]Public class HeadsetPlugReceiver extends BroadcastReceiver {Private static final String TAG = "headsetplugreceivreceiver ";@ OverridePublic void onReceive (Context context, Intent intent ){If (intent. hasExtra ("state ")){If (intent. getIntExtra ("state", 0) = 0 ){Toast. makeText (context, "

volume is too low) Fourth Step Click on the headset device to view the device properties to see if the device is disabled. If the device is disabled, select Enable the device. Fifth Step The problem detects that there may be a problem with the socket. In the headset properties to see if the headset is plugged

, click on the Control Panel into window Device Manager, in the Device Manager to select Sound and volume management (by the way to detect whether to turn on mute or volume too small). Click on the headset device to view the device properties to see if the device is disabled. If the device is disabled, select Enable the device. Five, the problem detected here may be a socket problem. In the

Symptoms: Bo Master book Y50, before the switch off the machine, prompted Win10 to download the update and installation, after the boot found to plug the headset into the headphone hole after dead or alive to hear the sound (notebook with the sound of the audio). During the period when the headset has been suspected of a bad problem, check the

how Android listens for key events on a Bluetooth headsetWrite in front:Directly want the code very easy, you can directly pull the scroll bar to the bottom to be able to see. If you want to understand why, then follow the steps I have planned to understand. The following test environment with "Bluedio + red rice mobile phone"on hand.1. Use of Bluetooth headsetThe use manual of Bluetooth headset will have relevant specific use instructions, here to pi

Many users who use the MacBook have encountered internal speaker failure, and the MacBook's built-in speaker fails, and its headphone holes will also light up red, as shown in the following figure. So what causes the MacBook's headphones to Kong Liang the red light? What should I do if the MacBook speaker doesn't sound? Here's a look at the solutions offered by users: To solve this problem, we have to consider two kinds of situations: Dual systems and non dual systems, th

Android automatically exits the FM Radio application when the flight mode is enabled and the headset is pulled out. The FM radio needs to be inserted into the headset as an antenna, and automatically exits when the headset is pulled out. 1. First add the prompt string Mediatek/packages/apps/FMRadio/res/values/strings. xml The FM will close because you hav

Many friends will encounter the computer suddenly did not sound or reload the system after everything else is normal, is the stereo or headphones no sound problem. I'll explain in detail the various reasons why the computer doesn't sound, and in the later part of the article, I'll explain the microphone's sound problem. Through the following detailed analysis, I believe that you can let you know that your computer is not a sound is going on, in the end what is the reason. There's no sound on th

bluetooth headset matching before, to ensure full power, generally to charge more than 2.5 hours before the line. If it is a newly bought headset, has not been connected with other devices, the headset will have voice prompts, automatic search can be paired with the device. At this point to the mobile phone and other Bluetooth-enabled devices to open