84 lines
2.7 KiB
Java
84 lines
2.7 KiB
Java
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.nfc;
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import android.content.Context;
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import android.database.ContentObserver;
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import android.net.Uri;
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import android.nfc.NfcAdapter;
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import android.os.Handler;
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import android.os.Looper;
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import android.provider.Settings;
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import androidx.annotation.VisibleForTesting;
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import androidx.preference.Preference;
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/**
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* NfcAirplaneModeObserver is a helper to manage the Nfc on/off when airplane mode status
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* is changed.
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*/
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public class NfcAirplaneModeObserver extends ContentObserver {
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private final Context mContext;
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private final NfcAdapter mNfcAdapter;
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private final Preference mPreference;
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private int mAirplaneMode;
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@VisibleForTesting
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final static Uri AIRPLANE_MODE_URI =
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Settings.Global.getUriFor(Settings.Global.AIRPLANE_MODE_ON);
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public NfcAirplaneModeObserver(Context context, NfcAdapter nfcAdapter, Preference preference) {
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super(new Handler(Looper.getMainLooper()));
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mContext = context;
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mNfcAdapter = nfcAdapter;
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mPreference = preference;
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updateNfcPreference();
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}
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public void register() {
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mContext.getContentResolver().registerContentObserver(AIRPLANE_MODE_URI, false, this);
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}
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public void unregister() {
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mContext.getContentResolver().unregisterContentObserver(this);
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}
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@Override
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public void onChange(boolean selfChange, Uri uri) {
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super.onChange(selfChange, uri);
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updateNfcPreference();
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}
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private void updateNfcPreference() {
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final int airplaneMode = Settings.Global.getInt(
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mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, mAirplaneMode);
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if (airplaneMode == mAirplaneMode) {
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return;
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}
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mAirplaneMode = airplaneMode;
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if (mAirplaneMode == 1) {
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// airplane mode is on, need to turn off NFC, and check if user can toggle it
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mNfcAdapter.disable();
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mPreference.setEnabled(NfcPreferenceController.isToggleableInAirplaneMode(mContext));
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} else {
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// airplane mode is off, no restriction
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mPreference.setEnabled(true);
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}
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}
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}
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