Android System Broadcast Dynamic registration

 Packagecom.broadcasttest; Importandroid.app.Activity; ImportAndroid.content.BroadcastReceiver; ImportAndroid.content.Context; Importandroid.content.Intent; ImportAndroid.content.IntentFilter; ImportAndroid.os.Bundle; ImportAndroid.view.View; ImportAndroid.view.View.OnClickListener; ImportAndroid.widget.Button; ImportAndroid.widget.Toast;  Public classMainactivityextendsActivity {Button btn=NULL; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);          Setcontentview (R.layout.activity_main); BTN=(Button) Findviewbyid (R.ID.SENDBROADCASRT); Btn.setonclicklistener (NewOnclicklistener () { Public voidOnClick (View v) {Intent Intent=NewIntent (); Intent.setaction ("Dynamic_broadcast"); Intent.putextra ("Message", "Send Broadcast");              Sendbroadcast (Intent);                              }          }); //Increased filteringIntentfilter Intentfilter =NewIntentfilter (); //Add filtering Intent contentIntentfilter.addaction ("Dynamic_broadcast"); Mybroadcast Mr=NewMybroadcast (); //registering a broadcast receiver and intent filter with the system         This. Registerreceiver (MR, Intentfilter); }            //to create your own broadcast receive class implement OnReceive method    classMybroadcastextendsbroadcastreceiver{ Public voidOnReceive (Context context, Intent Intent) {StringBuilder sb=NewStringBuilder (); Sb.append (Intent.getaction ()). Append (", Message:"). Append (Intent.getstringextra ("message").)); Toast.maketext (mainactivity. This, Sb.tostring (), Toast.length_short). Show (); }                }  }  

Instance intent set information to send the broadcast.

Add Intentfilter filter to filter broadcast

Registering broadcasts and intentfilter with the system

Implement your own broadcast receiver class

Unregister broadcast broadcast filters for the corresponding life cycle