Android-自定义发送/接收广播(BroadcastReceiver)

发送广播的项目：

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

public void button(View view) {
//发送自定义广播
Intent intent = new Intent();
//广播中的action也是自定义的
intent.setAction("com.example.cn");
sendBroadcast(intent);
}

}

接收广播的项目：
AndroidManifest.xml

<receiver android:name=".MyReceiver" >
<intent-filter>
<action android:name="com.example.cn" />
</intent-filter>
</receiver>

MyReceiver.java
public class MyReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "接收到广播", Toast.LENGTH_SHORT).show();
}

}