在我的应用程序中,我想向用户提供选择Wi-Fi / GPRS来与网络服务器进行网络连接的选项.可能是以下问题的答案解决我的问题
1.如何检查当前默认网络连接选项是否启用.
2.如何在用户选择时启用Wi-Fi / GPRS,或(如果用户选择GPRS,则禁用Wi-Fi – 如果GPRS只需要此选项)
1.如何检查当前默认网络连接选项是否启用.
2.如何在用户选择时启用Wi-Fi / GPRS,或(如果用户选择GPRS,则禁用Wi-Fi – 如果GPRS只需要此选项)
还是有其他一些方法呢？
解决方法
尝试这个：
ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (mWifi.isConnected())
//if wifi connected
}
ConnectivityManager connManager1 = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo mMobile = connManager1.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if (mMobile.isConnected()) {
//if internet connected
}
不要忘记在清单文件中添加这些权限;
android.permission.CHANGE_WIFI_STATE android.permission.ACCESS_WIFI_STATE android.permission.UPDATE_DEVICE_STATS android.permission.CHANGE_NETWORK_STATE android.permission.ACCESS_NETWORK_STATE android.permission.MODIFY_PHONE_STATE android.permission.READ_PHONE_STATE
要启用或禁用Wifi,请使用mWiFi.setWifiEnabled(true | false)
要启用/禁用GPRS / 3G,请使用以下代码段.
void turnData(boolean ON) throws Exception
{
if(bv == Build.VERSION_CODES.FROYO)
{
Log.i("version:","Found Froyo");
try{
Method dataConnSwitchmethod;
Class telephonyManagerClass;
Object ITelephonyStub;
Class ITelephonyClass;
TelephonyManager telephonyManager = (TelephonyManager) getApplicationContext().getSystemService(Context.TELEPHONY_SERVICE);
telephonyManagerClass = Class.forName(telephonyManager.getClass().getName());
Method getITelephonyMethod = telephonyManagerClass.getDeclaredMethod("getITelephony");
getITelephonyMethod.setAccessible(true);
ITelephonyStub = getITelephonyMethod.invoke(telephonyManager);
ITelephonyClass = Class.forName(ITelephonyStub.getClass().getName());
if (ON) {
dataConnSwitchmethod = ITelephonyClass.getDeclaredMethod("enableDataConnectivity");
} else {
dataConnSwitchmethod = ITelephonyClass.getDeclaredMethod("disableDataConnectivity");
}
dataConnSwitchmethod.setAccessible(true);
dataConnSwitchmethod.invoke(ITelephonyStub);
}catch(Exception e){
Log.e("Error:",e.toString());
}
}
else
{
Log.i("version:","Found Gingerbread+");
final ConnectivityManager conman = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
final Class conmanClass = Class.forName(conman.getClass().getName());
final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
iConnectivityManagerField.setAccessible(true);
final Object iConnectivityManager = iConnectivityManagerField.get(conman);
final Class iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName());
final Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled",Boolean.TYPE);
setMobileDataEnabledMethod.setAccessible(true);
setMobileDataEnabledMethod.invoke(iConnectivityManager,ON);
}
}