//创建广播接收
BroadcastReceiver receiver=new BroadcastReceiver(){
@Override
public void onReceive(Context context,Intent data){
@NotNull String json=data.getString("data")
// foo
}
}
// 订阅广播
IntentFilter intentFilter=IntentFilter();
intentFilter.addAction(action)
context.registerReceiver(receiver, intentFilter)
// 注销订阅
context.unregisterReceiver(receiver)
action
data