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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.nfc.cardemulation;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.DialogInterface;
     22 import android.content.Intent;
     23 import android.content.IntentFilter;
     24 import android.content.pm.PackageManager;
     25 import android.nfc.NfcAdapter;
     26 import android.nfc.cardemulation.ApduServiceInfo;
     27 import android.nfc.cardemulation.CardEmulation;
     28 import android.os.Bundle;
     29 import android.view.Window;
     30 import android.view.WindowManager;
     31 import android.widget.TextView;
     32 
     33 import com.android.internal.R;
     34 import com.android.internal.app.AlertActivity;
     35 import com.android.internal.app.AlertController;
     36 
     37 public class TapAgainDialog extends AlertActivity implements DialogInterface.OnClickListener {
     38     public static final String ACTION_CLOSE =
     39             "com.android.nfc.cardemulation.action.CLOSE_TAP_DIALOG";
     40     public static final String EXTRA_APDU_SERVICE = "apdu_service";
     41 
     42     public static final String EXTRA_CATEGORY = "category";
     43 
     44     // Variables below only accessed on the main thread
     45     private CardEmulation mCardEmuManager;
     46     private boolean mClosedOnRequest = false;
     47     final BroadcastReceiver mReceiver = new BroadcastReceiver() {
     48         @Override
     49         public void onReceive(Context context, Intent intent) {
     50             mClosedOnRequest = true;
     51             finish();
     52         }
     53     };
     54 
     55     @Override
     56     protected void onCreate(Bundle savedInstanceState) {
     57         super.onCreate(savedInstanceState);
     58 
     59         setTheme(R.style.Theme_DeviceDefault_Light_Dialog_Alert);
     60 
     61         final NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this);
     62         mCardEmuManager = CardEmulation.getInstance(adapter);
     63         Intent intent = getIntent();
     64         String category = intent.getStringExtra(EXTRA_CATEGORY);
     65         ApduServiceInfo serviceInfo = intent.getParcelableExtra(EXTRA_APDU_SERVICE);
     66         IntentFilter filter = new IntentFilter(ACTION_CLOSE);
     67         filter.addAction(Intent.ACTION_SCREEN_OFF);
     68         registerReceiver(mReceiver, filter);
     69         AlertController.AlertParams ap = mAlertParams;
     70 
     71         ap.mTitle = "";
     72         ap.mView = getLayoutInflater().inflate(com.android.nfc.R.layout.tapagain, null);
     73 
     74         PackageManager pm = getPackageManager();
     75         TextView tv = (TextView) ap.mView.findViewById(com.android.nfc.R.id.textview);
     76         String description = serviceInfo.getDescription();
     77         if (description == null) {
     78             CharSequence label = serviceInfo.loadLabel(pm);
     79             if (label == null) {
     80                 finish();
     81             } else {
     82                 description = label.toString();
     83             }
     84         }
     85         if (CardEmulation.CATEGORY_PAYMENT.equals(category)) {
     86             String formatString = getString(com.android.nfc.R.string.tap_again_to_pay);
     87             tv.setText(String.format(formatString, description));
     88         } else {
     89             String formatString = getString(com.android.nfc.R.string.tap_again_to_complete);
     90             tv.setText(String.format(formatString, description));
     91         }
     92         ap.mNegativeButtonText = getString(R.string.cancel);
     93         setupAlert();
     94         Window window = getWindow();
     95         window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
     96     }
     97 
     98     @Override
     99     protected void onDestroy() {
    100         super.onDestroy();
    101         unregisterReceiver(mReceiver);
    102     }
    103 
    104     @Override
    105     protected void onStop() {
    106         super.onStop();
    107         if (!mClosedOnRequest) {
    108             mCardEmuManager.setDefaultForNextTap(null);
    109         }
    110     }
    111 
    112     @Override
    113     public void onClick(DialogInterface dialog, int which) {
    114         finish();
    115     }
    116 }