用ConnectivityManager判断网络类型

public void connectivityManager(){
// 判断网络类型
ConnectivityManager connectMgr = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo info = connectMgr.getActiveNetworkInfo();

if (info == null) {
Toast.makeText(context, "当前无可用网络",Toast.LENGTH_SHORT).show();

return;
}

// WiFi 连接
if (info != null&& info.getType() == ConnectivityManager.TYPE_WIFI) {

}
// 手机信号连接
else if (info != null&& info.getType() == ConnectivityManager.TYPE_MOBILE) {

}
}

// 跳转到无线网络设置界面
startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));
// 跳转到无限wifi网络设置界面
startActivity(new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS));