src/com/android/settings/wifi/tether/WifiTetherSecurityPreferenceController.java

package com.android.settings.wifi.tether;

import static com.android.settings.AllInOneTetherSettings.DEDUP_POSTFIX;

import android.content.Context;
import android.net.wifi.SoftApConfiguration;
import android.util.FeatureFlagUtils;

import androidx.preference.ListPreference;
import androidx.preference.Preference;

import com.android.settings.R;
import com.android.settings.core.FeatureFlags;

public class WifiTetherSecurityPreferenceController extends WifiTetherBasePreferenceController {

    private static final String PREF_KEY = "wifi_tether_security";

    private final String[] mSecurityEntries;
    private int mSecurityValue;

    public WifiTetherSecurityPreferenceController(Context context,
            OnTetherConfigUpdateListener listener) {
        super(context, listener);
        mSecurityEntries = mContext.getResources().getStringArray(R.array.wifi_tether_security);
    }

    @Override
    public String getPreferenceKey() {
        return FeatureFlagUtils.isEnabled(mContext, FeatureFlags.TETHER_ALL_IN_ONE)
                ? PREF_KEY + DEDUP_POSTFIX : PREF_KEY;
    }

    @Override
    public void updateDisplay() {
        final SoftApConfiguration config = mWifiManager.getSoftApConfiguration();
        if (config != null && config.getSecurityType() == SoftApConfiguration.SECURITY_TYPE_OPEN) {
            mSecurityValue = SoftApConfiguration.SECURITY_TYPE_OPEN;
        } else {
            mSecurityValue = SoftApConfiguration.SECURITY_TYPE_WPA2_PSK;
        }

        final ListPreference preference = (ListPreference) mPreference;
        preference.setSummary(getSummaryForSecurityType(mSecurityValue));
        preference.setValue(String.valueOf(mSecurityValue));
    }

    @Override
    public boolean onPreferenceChange(Preference preference, Object newValue) {
        mSecurityValue = Integer.parseInt((String) newValue);
        preference.setSummary(getSummaryForSecurityType(mSecurityValue));
        mListener.onTetherConfigUpdated(this);
        return true;
    }

    public int getSecurityType() {
        return mSecurityValue;
    }

    private String getSummaryForSecurityType(int securityType) {
        if (securityType == SoftApConfiguration.SECURITY_TYPE_OPEN) {
            return mSecurityEntries[1];
        }
        // WPA2 PSK
        return mSecurityEntries[0];
    }
}