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/*
* Copyright (C) 2013 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.nfc;
import android.content.ComponentName;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.nfc.NfcAdapter;
import android.nfc.cardemulation.ApduServiceInfo;
import android.nfc.cardemulation.CardEmulation;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import java.util.ArrayList;
import java.util.List;
public class PaymentBackend {
public static final String TAG = "Settings.PaymentBackend";
public static class PaymentAppInfo {
CharSequence caption;
Drawable banner;
boolean isDefault;
public ComponentName componentName;
}
private final Context mContext;
private final NfcAdapter mAdapter;
private final CardEmulation mCardEmuManager;
public PaymentBackend(Context context) {
mContext = context;
mAdapter = NfcAdapter.getDefaultAdapter(context);
mCardEmuManager = CardEmulation.getInstance(mAdapter);
}
public List<PaymentAppInfo> getPaymentAppInfos() {
PackageManager pm = mContext.getPackageManager();
List<ApduServiceInfo> serviceInfos =
mCardEmuManager.getServices(CardEmulation.CATEGORY_PAYMENT);
List<PaymentAppInfo> appInfos = new ArrayList<PaymentAppInfo>();
if (serviceInfos == null) return appInfos;
ComponentName defaultApp = getDefaultPaymentApp();
for (ApduServiceInfo service : serviceInfos) {
PaymentAppInfo appInfo = new PaymentAppInfo();
appInfo.banner = service.loadBanner(pm);
appInfo.caption = service.getDescription();
if (appInfo.caption == null) {
appInfo.caption = service.loadLabel(pm);
}
appInfo.isDefault = service.getComponent().equals(defaultApp);
appInfo.componentName = service.getComponent();
appInfos.add(appInfo);
}
return appInfos;
}
boolean isForegroundMode() {
try {
return Settings.Secure.getInt(mContext.getContentResolver(),
Settings.Secure.NFC_PAYMENT_FOREGROUND) != 0;
} catch (SettingNotFoundException e) {
return false;
}
}
void setForegroundMode(boolean foreground) {
Settings.Secure.putInt(mContext.getContentResolver(),
Settings.Secure.NFC_PAYMENT_FOREGROUND, foreground ? 1 : 0) ;
}
ComponentName getDefaultPaymentApp() {
String componentString = Settings.Secure.getString(mContext.getContentResolver(),
Settings.Secure.NFC_PAYMENT_DEFAULT_COMPONENT);
if (componentString != null) {
return ComponentName.unflattenFromString(componentString);
} else {
return null;
}
}
public void setDefaultPaymentApp(ComponentName app) {
Settings.Secure.putString(mContext.getContentResolver(),
Settings.Secure.NFC_PAYMENT_DEFAULT_COMPONENT,
app != null ? app.flattenToString() : null);
}
}
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