Jeff Hamilton | 7949534 | 2010-10-18 13:13:10 -0500 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2010 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.apps.tag; |
| 18 | |
| 19 | import com.android.apps.tag.message.NdefMessageParser; |
| 20 | import com.android.apps.tag.message.ParsedNdefMessage; |
| 21 | import com.android.apps.tag.record.ParsedNdefRecord; |
| 22 | |
| 23 | import android.app.Activity; |
| 24 | import android.content.Context; |
| 25 | import android.content.Intent; |
| 26 | import android.nfc.NdefMessage; |
| 27 | import android.nfc.NdefTag; |
| 28 | import android.nfc.NfcAdapter; |
| 29 | import android.os.Bundle; |
| 30 | import android.os.Handler; |
| 31 | import android.os.Looper; |
| 32 | import android.os.Message; |
| 33 | import android.text.TextUtils; |
| 34 | import android.util.Log; |
| 35 | import android.view.ContextThemeWrapper; |
| 36 | import android.view.LayoutInflater; |
| 37 | import android.view.View; |
| 38 | import android.view.View.OnClickListener; |
| 39 | import android.view.WindowManager; |
| 40 | import android.widget.Button; |
| 41 | import android.widget.CheckBox; |
| 42 | import android.widget.ImageView; |
| 43 | import android.widget.LinearLayout; |
| 44 | import android.widget.TextView; |
| 45 | |
| 46 | import java.util.Locale; |
| 47 | |
| 48 | /** |
| 49 | * An {@link Activity} which handles a broadcast of a new tag that the device just discovered. |
| 50 | */ |
| 51 | public class TagViewer extends Activity implements OnClickListener, Handler.Callback { |
| 52 | static final String TAG = "SaveTag"; |
| 53 | static final String EXTRA_TAG_DB_ID = "db_id"; |
| 54 | static final String EXTRA_MESSAGE = "msg"; |
| 55 | |
| 56 | /** This activity will finish itself in this amount of time if the user doesn't do anything. */ |
| 57 | static final int ACTIVITY_TIMEOUT_MS = 10 * 1000; |
| 58 | |
| 59 | long mTagDatabaseId; |
| 60 | ImageView mIcon; |
| 61 | TextView mTitle; |
| 62 | CheckBox mStar; |
| 63 | Button mDeleteButton; |
| 64 | Button mCancelButton; |
| 65 | NdefMessage[] mMessagesToSave = null; |
| 66 | |
| 67 | @Override |
| 68 | protected void onCreate(Bundle savedInstanceState) { |
| 69 | super.onCreate(savedInstanceState); |
| 70 | |
| 71 | getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
| 72 | | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
| 73 | | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
| 74 | | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
| 75 | | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON |
| 76 | | WindowManager.LayoutParams.FLAG_DIM_BEHIND |
| 77 | ); |
| 78 | |
| 79 | setContentView(R.layout.tag_viewer); |
| 80 | |
| 81 | mTitle = (TextView) findViewById(R.id.title); |
| 82 | mIcon = (ImageView) findViewById(R.id.icon); |
| 83 | mStar = (CheckBox) findViewById(R.id.star); |
| 84 | mDeleteButton = (Button) findViewById(R.id.btn_delete); |
| 85 | mCancelButton = (Button) findViewById(R.id.btn_cancel); |
| 86 | |
| 87 | mDeleteButton.setOnClickListener(this); |
| 88 | mCancelButton.setOnClickListener(this); |
| 89 | mIcon.setImageResource(R.drawable.ic_launcher_nfc); |
| 90 | |
| 91 | Intent intent = getIntent(); |
| 92 | NdefMessage[] msgs = null; |
| 93 | NdefTag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); |
| 94 | if (tag == null) { |
| 95 | // Maybe it came from the database? |
| 96 | mTagDatabaseId = intent.getLongExtra(EXTRA_TAG_DB_ID, -1); |
| 97 | NdefMessage msg = intent.getParcelableExtra(EXTRA_MESSAGE); |
| 98 | if (msg != null) { |
| 99 | msgs = new NdefMessage[] { msg }; |
| 100 | } |
| 101 | |
| 102 | // Hide the text about saving the tag, it's already in the database |
| 103 | findViewById(R.id.cancel_help_text).setVisibility(View.GONE); |
| 104 | } else { |
| 105 | msgs = tag.getNdefMessages(); |
| 106 | mDeleteButton.setVisibility(View.GONE); |
| 107 | |
| 108 | // Set a timer on this activity since it wasn't created by the user |
| 109 | new Handler(this).sendEmptyMessageDelayed(0, ACTIVITY_TIMEOUT_MS); |
| 110 | |
| 111 | // Save the messages that were just scanned |
| 112 | mMessagesToSave = msgs; |
| 113 | } |
| 114 | |
| 115 | if (msgs == null || msgs.length == 0) { |
| 116 | Log.e(TAG, "No NDEF messages"); |
| 117 | finish(); |
| 118 | return; |
| 119 | } |
| 120 | |
| 121 | Context contentContext = new ContextThemeWrapper(this, android.R.style.Theme_Light); |
| 122 | LayoutInflater inflater = LayoutInflater.from(contentContext); |
| 123 | LinearLayout list = (LinearLayout) findViewById(R.id.list); |
| 124 | |
| 125 | buildTagViews(list, inflater, msgs); |
| 126 | |
| 127 | if (TextUtils.isEmpty(getTitle())) { |
| 128 | // There isn't a snippet for this tag, use a default title |
| 129 | setTitle(R.string.tag_unknown); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | private void buildTagViews(LinearLayout list, LayoutInflater inflater, NdefMessage[] msgs) { |
| 134 | if (msgs == null || msgs.length == 0) { |
| 135 | return; |
| 136 | } |
| 137 | |
| 138 | // Build the views from the logical records in the messages |
| 139 | NdefMessage msg = msgs[0]; |
| 140 | |
| 141 | // Set the title to be the snippet of the message |
| 142 | ParsedNdefMessage parsedMsg = NdefMessageParser.parse(msg); |
| 143 | setTitle(parsedMsg.getSnippet(this, Locale.getDefault())); |
| 144 | |
| 145 | // Build views for all of the sub records |
| 146 | for (ParsedNdefRecord record : parsedMsg.getRecords()) { |
| 147 | list.addView(record.getView(this, inflater, list)); |
| 148 | inflater.inflate(R.layout.tag_divider, list, true); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | @Override |
| 153 | public void setTitle(CharSequence title) { |
| 154 | mTitle.setText(title); |
| 155 | } |
| 156 | |
| 157 | @Override |
| 158 | public void onClick(View view) { |
| 159 | if (view == mDeleteButton) { |
| 160 | Intent save = new Intent(this, TagService.class); |
| 161 | save.putExtra(TagService.EXTRA_DELETE_ID, mTagDatabaseId); |
| 162 | startService(save); |
| 163 | finish(); |
| 164 | } else if (view == mCancelButton) { |
| 165 | mMessagesToSave = null; |
| 166 | finish(); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | @Override |
| 171 | public void onStop() { |
| 172 | super.onStop(); |
| 173 | if (mMessagesToSave != null) { |
| 174 | saveMessages(mMessagesToSave); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | void saveMessages(NdefMessage[] msgs) { |
| 179 | Intent save = new Intent(this, TagService.class); |
| 180 | save.putExtra(TagService.EXTRA_SAVE_MSGS, msgs); |
| 181 | startService(save); |
| 182 | } |
| 183 | |
| 184 | @Override |
| 185 | public boolean handleMessage(Message msg) { |
| 186 | finish(); |
| 187 | return true; |
| 188 | } |
| 189 | } |