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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.connecteddevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.nfc.NfcAdapter;
import android.os.UserManager;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnResume;
import com.android.settingslib.core.lifecycle.events.OnStop;
/**
* Controller that used to show NFC and payment features
*/
public class NfcAndPaymentFragmentController extends BasePreferenceController
implements LifecycleObserver, OnResume, OnStop {
private final NfcAdapter mNfcAdapter;
private final PackageManager mPackageManager;
private final UserManager mUserManager;
private final IntentFilter mIntentFilter;
private Preference mPreference;
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (mPreference == null) {
return;
}
final String action = intent.getAction();
if (NfcAdapter.ACTION_ADAPTER_STATE_CHANGED.equals(action)) {
refreshSummary(mPreference);
}
}
};
public NfcAndPaymentFragmentController(Context context, String preferenceKey) {
super(context, preferenceKey);
mPackageManager = context.getPackageManager();
mUserManager = context.getSystemService(UserManager.class);
mNfcAdapter = NfcAdapter.getDefaultAdapter(context);
mIntentFilter = isNfcAvailable()
? new IntentFilter(NfcAdapter.ACTION_ADAPTER_STATE_CHANGED) : null;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
}
@Override
public int getAvailabilityStatus() {
if (!mPackageManager.hasSystemFeature(PackageManager.FEATURE_NFC)
|| !mPackageManager.hasSystemFeature(
PackageManager.FEATURE_NFC_HOST_CARD_EMULATION)) {
return UNSUPPORTED_ON_DEVICE;
}
return AVAILABLE;
}
@Override
public CharSequence getSummary() {
if (mNfcAdapter != null) {
if (mNfcAdapter.isEnabled()) {
return mContext.getText(R.string.nfc_setting_on);
} else {
return mContext.getText(R.string.nfc_setting_off);
}
}
return null;
}
@Override
public void onStop() {
if (!isNfcAvailable()) {
return;
}
mContext.unregisterReceiver(mReceiver);
}
@Override
public void onResume() {
if (!isNfcAvailable()) {
return;
}
mContext.registerReceiver(mReceiver, mIntentFilter);
}
private boolean isNfcAvailable() {
return mNfcAdapter != null;
}
}
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