Android enables headphone insertion and removal status detection

To detect headphone insertion and removal under Android, you need to create a broadcastreceiver, used to listen for "Android.intent.action.HEADSET_PLUG" broadcasts.

implementation steps:

1. Create a broadcastreceiver subclass and override the OnReceive () method,in this method, the processing logic after receiving the broadcast is written;

2. Create an activity class that uses Registerreceiver () in the OnCreate () methodmethods to register and monitor broadcasts;

3. In activity, rewrite the Ondestory () method and use Unregisterreceiver () to unregister the listening broadcast.

The specific implementation code is as follows:

Broadcast receiver Class

Package Com.leigo.demo.receiver;import Android.content.broadcastreceiver;import Android.content.context;import Android.content.intent;import android.widget.toast;/** * Created by Administrator on 2014/8/27. */public class Headsetdetectreceiver extends Broadcastreceiver {    @Override public    void OnReceive (Context Context, Intent Intent) {        String action = intent.getaction ();        if (Intent.ACTION_HEADSET_PLUG.equals (ACTION)) {            if (Intent.hasextra ("state")} {                int state = Intent.getintextra ("state", 0);                if (state = = 1) {                    Toast.maketext (context, "Insert headset", Toast.length_short). Show ();                } else if (state = = 0) {                    Toast.maketext (context, "unplug headphones", toast.length_short). Show ();}}}}    

Package Com.leigo.demo;import Android.app.activity;import Android.content.broadcastreceiver;import Android.content.intent;import Android.content.intentfilter;import Android.os.bundle;import Android.view.Menu; Import Android.view.menuitem;import Com.leigo.demo.receiver.headsetdetectreceiver;public class MainActivity extends    Activity {private Broadcastreceiver receiver;        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);  /** * Broadcast action:wired Headset plugged in or unplugged * The intent would have the following extra         Values: * state-0 for Unplugged, 1 for plugged. * Name-headset type, human readable string * microphone-1 if Headset has a microphone, 0 otherwise *        /receiver = new Headsetdetectreceiver ();        Intentfilter intentfilter = new Intentfilter (); Intentfilter.addaction (Intent.action_Headset_plug);    Registerreceiver (receiver, intentfilter);        } @Override protected void OnDestroy () {Super.ondestroy ();    Unregisterreceiver (receiver); } @Override Public boolean Oncreateoptionsmenu (Menu menu) {//Inflate the menu, this adds items to the Actio        n Bar if it is present.        Getmenuinflater (). Inflate (R.menu.main, menu);    return true; } @Override public boolean onoptionsitemselected (MenuItem Item) {//Handle Action Bar item clicks here.  The action bar would//automatically handle clicks on the Home/up button, so long/As you specify a parent        Activity in Androidmanifest.xml.        int id = item.getitemid ();        if (id = = r.id.action_settings) {return true;    } return super.onoptionsitemselected (item); }}

Android enables headphone insertion and removal status detection