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.graphics.drawable.Drawable; 26 import android.nfc.NfcAdapter; 27 import android.nfc.cardemulation.ApduServiceInfo; 28 import android.nfc.cardemulation.CardEmulation; 29 import android.os.Bundle; 30 import android.os.UserHandle; 31 import android.util.Log; 32 import android.view.View; 33 import android.view.Window; 34 import android.view.WindowManager; 35 import android.widget.ImageView; 36 37 import androidx.appcompat.widget.Toolbar; 38 39 import com.android.nfc.cardemulation.util.AlertActivity; 40 41 import java.util.concurrent.atomic.AtomicReference; 42 43 public class TapAgainDialog extends AlertActivity implements DialogInterface.OnClickListener { 44 private static final String TAG = "TapAgainDialog"; 45 public static final String ACTION_CLOSE = 46 "com.android.nfc.cardemulation.action.CLOSE_TAP_DIALOG"; 47 public static final String EXTRA_APDU_SERVICE = "apdu_service"; 48 49 public static final String EXTRA_CATEGORY = "category"; 50 51 // Variables below only accessed on the main thread 52 private CardEmulation mCardEmuManager; 53 private boolean mClosedOnRequest = false; 54 private AtomicReference<BroadcastReceiver> mReceiver; 55 56 @Override onCreate(Bundle savedInstanceState)57 protected void onCreate(Bundle savedInstanceState) { 58 super.onCreate(savedInstanceState); 59 60 setTheme(com.android.nfc.R.style.TapAgainDayNight); 61 62 final NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this); 63 if (adapter == null) { 64 Log.e(TAG, "adapter is null"); 65 finish(); 66 return; 67 } 68 mCardEmuManager = CardEmulation.getInstance(adapter); 69 Intent intent = getIntent(); 70 ApduServiceInfo serviceInfo = intent.getParcelableExtra(EXTRA_APDU_SERVICE); 71 if (serviceInfo == null) { 72 Log.e(TAG, "onCreate: serviceInfo is null"); 73 finish(); 74 return; 75 } 76 77 final BroadcastReceiver receiver = new BroadcastReceiver() { 78 @Override 79 public void onReceive(Context context, Intent intent) { 80 mClosedOnRequest = true; 81 finish(); 82 } 83 }; 84 mReceiver = new AtomicReference<BroadcastReceiver>(receiver); 85 IntentFilter filter = new IntentFilter(ACTION_CLOSE); 86 filter.addAction(Intent.ACTION_SCREEN_OFF); 87 registerReceiver(receiver, filter); 88 89 View view = getLayoutInflater().inflate(com.android.nfc.R.layout.tapagain, null); 90 Toolbar toolbar = (Toolbar) view.findViewById(com.android.nfc.R.id.tap_again_toolbar); 91 toolbar.setNavigationIcon(getDrawable(com.android.nfc.R.drawable.ic_close)); 92 toolbar.setNavigationOnClickListener(new View.OnClickListener() { 93 @Override 94 public void onClick(View view) { 95 finish(); 96 } 97 }); 98 99 PackageManager pm = getPackageManager(); 100 ImageView iv = (ImageView) view.findViewById(com.android.nfc.R.id.tap_again_appicon); 101 Drawable icon = pm.getUserBadgedIcon(serviceInfo.loadIcon(pm), 102 UserHandle.getUserHandleForUid(serviceInfo.getUid())); 103 104 iv.setImageDrawable(icon); 105 106 mAlertBuilder.setTitle(""); 107 mAlertBuilder.setView(view); 108 109 setupAlert(); 110 Window window = getWindow(); 111 window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); 112 } 113 114 /** 115 * Safely unregister the broadcast receiver and empty the mReceiver internal elements. 116 */ close()117 public void close() { 118 final BroadcastReceiver receiver = mReceiver.getAndSet(null); 119 if (receiver != null) { 120 unregisterReceiver(receiver); 121 } 122 } 123 124 @Override onDestroy()125 protected void onDestroy() { 126 super.onDestroy(); 127 if (mReceiver.get() != null) { 128 Log.e(TAG, "onDestroy: Failed to unregister receiver"); 129 close(); 130 } 131 } 132 133 @Override onStop()134 protected void onStop() { 135 super.onStop(); 136 if (!mClosedOnRequest && mCardEmuManager != null) { 137 mCardEmuManager.setDefaultForNextTap(null); 138 } 139 } 140 141 @Override onClick(DialogInterface dialog, int which)142 public void onClick(DialogInterface dialog, int which) { 143 finish(); 144 } 145 } 146