[英]Automatically connect to wifi network in android?
我正在開發一個應用程序,如果該應用程序以前連接過網絡,那么只要打開wifi,然后在后台應用程序中都應連接到網絡?我可以為此目的使用廣泛投放接收器嗎?
為了接收Broadcast
的連接更改,您可以像這樣收聽:
在AndroidManifest.xml
注冊您的接收器
<receiver
android:name=".NetworkCheckReceiver"
>
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
然后在BroadcastReceiver
類中
public class NetworkCheckReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
Log.d("NetworkCheckReceiver", "NetworkCheckReceiver invoked...");
boolean noConnectivity = intent.getBooleanExtra(
ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
if (!noConnectivity) {
Log.d("NetworkCheckReceiver", "connected");
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format("\"%s\"", networkSSID);
wifiConfig.preSharedKey = String.format("\"%s\"", networkKey);
WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
int netId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(netId, true);
wifiManager.reconnect();
}
else{
Log.d("NetworkCheckReceiver", "disconnected");
}
}
}
}
當然,不要忘記添加所需的權限
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
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