系统广播以及自定义广播
MainActivity
import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.net.ConnectivityManager; import android.net.Network; import android.net.NetworkInfo; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private IntentFilter intentFilter; private LocalReceiver localReceiver; private LocalBroadcastManager localBroadcastmanager; private NetworkChangeReceiver networkChangeReceiver; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); localBroadcastmanager = LocalBroadcastManager.getInstance(this); Button button = (Button) findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent intent = new Intent("com.ldxiaofeng.android.broadcasttest.LOCAL_BROADCAST"); localBroadcastmanager.sendBroadcast(intent); //Intent intent = new Intent("com.ldxiaofeng.android.broadcasttest.MY_BROADCAST"); //sendOrderedBroadcast(intent,null); } }); intentFilter = new IntentFilter(); intentFilter.addAction("com.ldxiaofeng.android.broadcasttest.LOCAL_BROADCAST"); localReceiver = new LocalReceiver(); localBroadcastmanager.registerReceiver(localReceiver,intentFilter); //intentFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");//网络发生变化系统就会发出android.net.conn.CONNECTIVITY_CHANGE的广播 //networkChangeReceiver = new NetworkChangeReceiver(); //registerReceiver(networkChangeReceiver,intentFilter);//注册 } class LocalReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { Toast.makeText(context,"收到本地广播",Toast.LENGTH_SHORT).show(); } } @Override protected void onDestroy() { super.onDestroy(); localBroadcastmanager.unregisterReceiver(localReceiver); //unregisterReceiver(networkChangeReceiver);//取消注册 } class NetworkChangeReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { ConnectivityManager connectionManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connectionManager.getActiveNetworkInfo(); if(networkInfo != null && networkInfo.isAvailable()){ Toast.makeText(context,"网络已连接",Toast.LENGTH_SHORT).show(); }else{ Toast.makeText(context,"网络未连接",Toast.LENGTH_SHORT).show(); } } } }
BootCompleteReceiver
import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.widget.Toast; public class BootCompleteReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving // an Intent broadcast. //throw new UnsupportedOperationException("Not yet implemented"); Toast.makeText(context,"Boot Complete",Toast.LENGTH_SHORT).show(); } }
MyBroadcastReceiver
public class MyBroadcastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving // an Intent broadcast. //throw new UnsupportedOperationException("Not yet implemented"); Toast.makeText(context,"收到广播在1内",Toast.LENGTH_SHORT).show(); abortBroadcast(); } }
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.ldxiaofeng.android.broadcasttest.MainActivity"> <Button android:id="@+id/button" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="发送广播"/> </LinearLayout>