BroadcastReceiver的清单中声明不接收广播 [英] BroadcastReceiver declared in manifest is not receiving the Broadcast

问题描述

我试图注册一个无线的BroadcastReceiver得到的WiFi状态时，它的变化。但到目前为止，我没有运气接收广播。

I've tried to register a Wifi BroadcastReceiver to get the wifi state when it changes. But so far I have no luck receiving the broadcast.

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <receiver android:name=".WifiReceiver" >
        <intent-filter>
            <action android:name="android.net.wifi.WifiManager.WIFI_STATE_CHANGED_ACTION" />
            <action android:name="android.intent.action.PHONE_STATE" />
        </intent-filter>
    </receiver>

    //activity declaration here...

</application>

难道你们知道如何注册BraodcastReceiver清单中？

Do you guys know how to register the BraodcastReceiver in manifest?

我不想在活动注册它，因为我想为监控无线时，有是否我的应用程序正在运行或不变化的wifi状态。

I don't want to register it in activities because I want to monitor the wifi when there is changes in the wifi state whether my application is running or not.

这是我的BroadcastReceiver类：

This is my BroadcastReceiver class:

public class WifiReceiver extends BroadcastReceiver {
    private final String TAG = "WifiReceiver";

    @Override
    public void onReceive(Context context, Intent intent) {
        int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_UNKNOWN);
        String wifiStateText = "No State";

        switch (wifiState) {
        case WifiManager.WIFI_STATE_DISABLING:
            wifiStateText = "WIFI_STATE_DISABLING";
            break;
        case WifiManager.WIFI_STATE_DISABLED:
            wifiStateText = "WIFI_STATE_DISABLED";
            break;
        case WifiManager.WIFI_STATE_ENABLING:
            wifiStateText = "WIFI_STATE_ENABLING";
            break;
        case WifiManager.WIFI_STATE_ENABLED:
            wifiStateText = "WIFI_STATE_ENABLED";
            break;
        case WifiManager.WIFI_STATE_UNKNOWN:
            wifiStateText = "WIFI_STATE_UNKNOWN";
            break;
        default:
            break;
        }
        MyLog.d(TAG, "onReceive Broadcast > WiFiState: " + wifiStateText);
        MyLog.d(TAG, "onReceive Broadcast > Time: " + new Date());
    }
}

我真的很希望能得到一些帮助。先谢谢了。

I really hope to get some help. Thanks in advance.

推荐答案

您在明显的接收者应该看起来像这样

Your receiver in manifest should looks like this

<receiver android:name=".WifiReceiver" >
    <intent-filter>
       <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
    </intent-filter>
</receiver>

还有以下权限可能需要

Also the following permission may be needed

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

这篇关于BroadcastReceiver的清单中声明不接收广播的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！