Android组件之间的通信有多种实现方式，Broadcast就是其中一种。在activity和fragment之间的通信，broadcast用的更多本文以一个activity为例。
效果如图：

布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/textView1" android:layout_marginLeft="27dp" android:layout_marginTop="26dp" android:text="发送广播" /></LinearLayout>

MainActivity.java

public class MainActivity extends Activity { private Button btn; private TextView tv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv = (TextView) this.findViewById(R.id.textView1); //接收广播 LocalBroadcastManager broadcastManager = LocalBroadcastManager .getInstance(MainActivity.this); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction("com.example.test1"); BroadcastReceiver mItemViewListClickReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { tv.setText("1111"); } }; broadcastManager.registerReceiver(mItemViewListClickReceiver, intentFilter); btn = (Button) this.findViewById(R.id.button1); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { //发送广播 Intent intent = new Intent("com.example.test1"); LocalBroadcastManager.getInstance(MainActivity.this) .sendBroadcast(intent); } }); }}

原文链接：http://blog.csdn.net/u012702547/article/details/46816331

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