WakefulBroadcastReceiver不能被解析为一个类型 [英] WakefulBroadcastReceiver cannot be resolved to a type

问题描述

我的项目显示错误消息， WakefulBroadcastReceiver不能被解析为一个类型。 我抬起头，对所有可能的原因，我能想到的。我已经设置 Android的支持库和谷歌播放服务的路径。甚至我的MapView作品（如果我下面评论code），这意味着谷歌播放服务正确添加到项目。

My project shows error message that WakefulBroadcastReceiver cannot be resolved to a type. I looked up for all possible reasons I can think of. I have set android-support-library and google play services's path. Even my mapView works (if I comment below code) that means google play service is correctly added to project.

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // Explicitly specify that GcmIntentService will handle the intent.
        ComponentName comp = new ComponentName(context.getPackageName(),
            GcmIntentService.class.getName());
        // Start the service, keeping the device awake while it is launching.
        startWakefulService(context, (intent.setComponent(comp)));
        setResultCode(Activity.RESULT_OK);
    }
}

任何想法，为什么这给了错误？

Any idea why this gives error?

推荐答案

请确保您有最新的Andr​​oid支持包添加到项目中。例如，此示例项目具有合适 Android的支持-v4.jar 并演示了如何使用 WakefulBroadcastReceiver 。

Make sure that you have the latest Android Support package added to your project. For example, this sample project has a suitable android-support-v4.jar and demonstrates the use of WakefulBroadcastReceiver.

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