如何接收服务发送的 Intent

Question

我在将 Intent 从 Service 发送到 Activity 时遇到了一些问题。代码如下：

Intent intent = new Intent(context,
MessagingActivity.NewMessageReceiver.class);
intent.setAction(XMPPService.NEW_MESSAGE);
intent.putExtra("MESSAGE", body);
intent.putExtra("FROM", from);
context.sendBroadcast(intent);

上下文是一项服务 接收方代码（活动中的内部类）：

public class NewMessageReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        if (intent.getAction().equals(XMPPService.NEW_MESSAGE))
        {
            String message = intent.getStringExtra("MESSAGE");
            String from = intent.getStringExtra("FROM");
            // TODO: add screen switch
            addMessage(true, from, message);
        }
    }
}

Android 清单条目：

<receiver 
    android:name=".MessagingActivity.NewMessageReceiver">
    <intent-filter>
        <action android:name="com.someapp.XMPPService.NEW_MESSAGE"/>
    </intent-filter>
</receiver>

问题是虽然发送了Intent，但是没有调用onReceive()方法。

谢谢，伊万。

Answer 1

试试这个

Intent intent = new Intent(XMPPService.NEW_MESSAGE);
intent.putExtra("MESSAGE", body);
intent.putExtra("FROM", from);
sendBroadcast(intent);

在活动中

IntentFilter filter = new IntentFilter(XMPPService.NEW_MESSAGE);


    BroadcastReceiver   mReceiver = new MessageReceiver(getApplicationContext());
        registerReceiver(mReceiver, filter);