broadcastreceiver - How to make android application listen to specific NFC chip? -

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i'm creating application action if hit nfc chip , know following information nfc in android please correct me if wrong

  1. you can't register actions of nfc receiver in manifest file , activities .
  2. each nfc chip has it's own unique id .

what want is
while application in background or it's closed , if hit nfc chip id (ex 1234) app lunched , action.

is possible ? if yes, how can achieved?

edit here code , open when check nfc chip , action android.nfc.action.tech_discovered when open action android.intent.action.main mainactivity.java 

    public class mainactivity extends appcompatactivity {     public static final string action_check_in= "checked";     public static final string action_check_out= "unchecked";     private nfcadapter mnfcadapter;     boolean ischeckedin = false;      private static final string tag = "mainactivity";     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         mnfcadapter = nfcadapter.getdefaultadapter(this);         ischeckedin = pref.getboolean("check", false);     }      @override     protected void onresume() {         super.onresume();         log.d(tag, "onresume() called with: " + "");         string action = getintent().getaction();         if (action != null) {             log.d("mainactivity", "oncreate(" + action + ")");             if (action.equals(nfcadapter.action_ndef_discovered) || action.equals(nfcadapter.action_tag_discovered) || action.equals(nfcadapter.action_tech_discovered)) {                  if (!ischeckedin) {                     ischeckedin = true;                     pref.putboolean("check", true);                     log.d("checking","in");                 } else {                     ischeckedin = false;                     pref.putboolean("check", false);                     log.d("checking","out");                 }              }          }          if (!mnfcadapter.isenabled()) {              toast.maketext(mainactivity.this, "please open ", toast.length_short).show();         }           /**          * it's important, activity in foreground.          * otherwise illegalstateexception thrown.          */         setupforegrounddispatch(this, mnfcadapter);     }      @override     protected void onpause() {         /**          * call before onpause, otherwise illegalargumentexception thrown.          */         stopforegrounddispatch(this, mnfcadapter);          super.onpause();     }      @override     protected void ondestroy() {         super.ondestroy();     }       public static void setupforegrounddispatch(activity activity, nfcadapter adapter) {         final intent intent = new intent(activity.getapplicationcontext(), activity.getclass());         intent.setflags(intent.flag_activity_single_top);          final pendingintent pendingintent = pendingintent.getactivity(                 activity.getapplicationcontext(), 0, intent, 0);          intentfilter[] filters = new intentfilter[2];         string[][] techlist = new string[][]{};          // same filter manifest - action, category         filters[0] = new intentfilter();         filters[0].addaction(nfcadapter.action_tag_discovered);         filters[1] = new intentfilter();         filters[1].addaction(nfcadapter.action_tech_discovered);          adapter.enableforegrounddispatch(activity, pendingintent, filters, techlist);     }      public static void stopforegrounddispatch(activity activity, nfcadapter adapter) {         adapter.disableforegrounddispatch(activity);     } }

manifest

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.srjo.pocnfcadapter">      <uses-permission android:name="android.permission.nfc" />      <uses-feature         android:name="android.hardware.nfc"         android:required="true" />      <application         android:name=".myapplication"         android:allowbackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:supportsrtl="true"         android:theme="@style/apptheme">         <activity android:name=".mainactivity">               <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>             <intent-filter>                 <action android:name="android.nfc.action.tag_discovered" />             </intent-filter>             <intent-filter>                 <action android:name="android.nfc.action.tech_discovered" />             </intent-filter>              <meta-data                 android:name="android.nfc.action.tech_discovered"                 android:resource="@xml/filter_nfc" />          </activity>      </application>  </manifest>

according the android developer site, possible app filter nfc intents such action_ndef_discovered.


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