在我的应用程序中,如果连接了网络更改,我需要重新启动服务。目前它只能以一种方式工作(wifi 到移动数据),但它不能以另一种方式工作(移动数据到 wifi。)这是为什么?是因为我的广播接收器中没有 android.net.wifi.WIFI_STATE_CHANGED
还是放错了权限?
感谢您的帮助。
代码: 接收方的 list 条目:
<receiver
android:name="LiveForever"
android:label="NetworkChangeReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
接收器本身:
public static final int TYPE_WIFI = 1;
public static final int TYPE_MOBILE = 2;
public static final int TYPE_NOT_CONNECTED = 0;
public static final String PREFS_NAME = "cakecloudpreferences";
@Override
public void onReceive(Context context, Intent intent) {
SharedPreferences settings = context.getSharedPreferences(PREFS_NAME, 0);
if (getConnectivityStatus(context)!=0&&!settings.getBoolean("osmframerunning",false)) {
context.stopService(new Intent(context, OSMFrame.class));
settings.edit().putBoolean("osmframerunning",false).commit();
Intent frameintent = new Intent(context,OSMFrame.class);
frameintent.putExtra("username",settings.getString("usr",""));
frameintent.putExtra("password",settings.getString("pswd",""));
frameintent.putExtra("uid",settings.getString("uid",""));
context.startService(frameintent);
Log.i("CCLiveForever","LiveForever Triggered, OSMFrame restarted.");
}
}
public int getConnectivityStatus(Context context) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
if (null != activeNetwork) {
if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI) return TYPE_WIFI;
if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) return TYPE_MOBILE;
}
return TYPE_NOT_CONNECTED;
}
我列出的相关权限:
- android.permission.ACCESS_WIFI_STATE
- android.permission.ACCESS_NETWORK_STATE
- android.permission.INTERNET
再次感谢您!
最佳答案
android.net.wifi.WIFI_STATE_CHANGED
仅在启用或禁用 WiFi 时发送。如果你想在连接到 WiFi 网络或断开连接时接收广播事件,你也需要捕获 android.net.wifi.STATE_CHANGE
。
关于android.net.wifi.WIFI_STATE_CHANGED 未被广播,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/17929086/