1 import android.app.Activity; 2 import android.content.BroadcastReceiver; 3 import android.content.Context; 4 import android.content.Intent; 5 import android.content.IntentFilter; 6 import android.os.Bundle; 7 import android.provider.Browser.BookmarkColumns; 8 import android.util.Log; 9 import android.view.Menu;10 import android.view.MenuItem;11 import android.view.View;12 import android.view.View.OnClickListener;13 import android.widget.Button;14 15 public class MainActivity extends Activity {16     Myboardcast mMyboardcast;17     protected String action = "发送内容";18 19     @Override20     protected void onCreate(Bundle savedInstanceState) {21         super.onCreate(savedInstanceState);22         setContentView(R.layout.activity_main);23         Button button = (Button) findViewById(R.id.btn);24         mMyboardcast = new Myboardcast();//创建广播25         IntentFilter filter = new IntentFilter();26         filter.addAction(action);//过滤器27         registerReceiver(mMyboardcast, filter);28         button.setOnClickListener(new OnClickListener() {29 30             @Override31             public void onClick(View v) {32                 Intent intent = new Intent();33                 intent.setAction(action);34                 MainActivity.this.sendBroadcast(intent);//发送意图35             }36         });37     }38 39     @Override40     protected void onDestroy() {41         unregisterReceiver(mMyboardcast);42         super.onDestroy();43     }44 45     private class Myboardcast extends BroadcastReceiver {46 47         @Override48         public void onReceive(Context context, Intent intent) {49             Log.e("Myboardcast", "收到广播！");50         }51 52     }53 }