Merge "Settings: Clean up WifiManager APIs"

import android.net.wifi.WifiManager.NetworkRequestUserSelectionCallback;

import android.os.Bundle;

import android.os.Handler;

import android.os.HandlerExecutor;

import android.os.Message;

import android.widget.Toast;

import androidx.annotation.Nullable;

import androidx.fragment.app.FragmentActivity;

import com.android.settings.R;

import com.android.settings.wifi.NetworkRequestErrorDialogFragment.ERROR_DIALOG_TYPE;

import java.util.List;

/**

        final WifiManager wifiManager = getSystemService(WifiManager.class);

        if (wifiManager != null) {

            wifiManager.registerNetworkRequestMatchCallback(this, mHandler);

            wifiManager.registerNetworkRequestMatchCallback(new HandlerExecutor(mHandler), this);

        }

        // Sets time-out to stop scanning.

        mHandler.sendEmptyMessageDelayed(MESSAGE_STOP_SCAN_WIFI_LIST, DELAY_TIME_STOP_SCAN_MS);

import android.os.Bundle;

import android.text.TextUtils;

import android.util.Log;

import android.widget.Toast;

import androidx.annotation.NonNull;

                        finish();

                    }

                } break;

                case WifiManager.ERROR: {

                    Toast.makeText(activity, R.string.wifi_error, Toast.LENGTH_SHORT).show();

                    finish();

                } break;

            }

        }

    }