1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/*
* Copyright (C) 2010 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.apps.tagcanon;
import com.android.apps.tag.MockNdefMessages;
import com.google.common.base.Preconditions;
import com.google.common.primitives.Bytes;
import android.app.ListActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.nfc.NdefMessage;
import android.nfc.NdefRecord;
import android.nfc.NfcAdapter;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Locale;
/**
* A test activity that launches tags as if they had been scanned.
*/
public class TagCanon extends ListActivity {
static final String TAG = "TagCanon";
static final byte[] UID = new byte[] { 0x05, 0x00, 0x03, 0x08 };
ArrayAdapter<TagDescription> mAdapter;
public static NdefRecord newTextRecord(String text, Locale locale, boolean encodeInUtf8) {
Preconditions.checkNotNull(text);
Preconditions.checkNotNull(locale);
byte[] langBytes = locale.getLanguage().getBytes(StandardCharsets.US_ASCII);
Charset utfEncoding = encodeInUtf8 ? StandardCharsets.UTF_8 : StandardCharsets.UTF_16;
byte[] textBytes = text.getBytes(utfEncoding);
int utfBit = encodeInUtf8 ? 0 : (1 << 7);
char status = (char) (utfBit + langBytes.length);
byte[] data = Bytes.concat(
new byte[] { (byte) status },
langBytes,
textBytes
);
return new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_TEXT, new byte[0], data);
}
public static NdefRecord newMimeRecord(String type, byte[] data) {
Preconditions.checkNotNull(type);
Preconditions.checkNotNull(data);
byte[] typeBytes = type.getBytes(StandardCharsets.US_ASCII);
return new NdefRecord(NdefRecord.TNF_MIME_MEDIA, typeBytes, new byte[0], data);
}
final NdefMessage[] buildImageMessages() {
Resources res = getResources();
Drawable drawable = res.getDrawable(R.drawable.ic_launcher_nfc);
Bitmap photo = ((BitmapDrawable) drawable).getBitmap();
final int size = photo.getWidth() * photo.getHeight() * 4;
final ByteArrayOutputStream out = new ByteArrayOutputStream(size);
try {
photo.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
byte[] payload = out.toByteArray();
out.close();
NdefRecord text = newTextRecord("There's an image below this text!", Locale.US, true);
NdefRecord image = newMimeRecord("image/png", payload);
NdefMessage[] msgs = new NdefMessage[] {
new NdefMessage(new NdefRecord[] { text, image }) };
return msgs;
} catch (IOException e) {
throw new RuntimeException("Failed to compress image", e);
}
}
static final class TagDescription {
public String title;
NdefMessage[] msgs;
public TagDescription(String title, byte[] bytes) {
this.title = title;
try {
msgs = new NdefMessage[] { new NdefMessage(bytes) };
} catch (Exception e) {
throw new RuntimeException("Failed to create tag description", e);
}
}
public TagDescription(String title, NdefMessage[] msgs) {
this.title = title;
this.msgs = msgs;
}
@Override
public String toString() {
return title;
}
}
@Override
public void onCreate(Bundle savedState) {
super.onCreate(savedState);
ArrayAdapter<TagDescription> adapter = new ArrayAdapter<TagDescription>(this,
android.R.layout.simple_list_item_1, android.R.id.text1);
adapter.add(new TagDescription("Image", buildImageMessages()));
adapter.add(new TagDescription("Real NFC message", MockNdefMessages.REAL_NFC_MSG));
adapter.add(new TagDescription("Call Google", MockNdefMessages.CALL_GOOGLE));
adapter.add(new TagDescription("English text", MockNdefMessages.ENGLISH_PLAIN_TEXT));
adapter.add(new TagDescription("Send text message", MockNdefMessages.SEND_TEXT_MESSAGE));
adapter.add(new TagDescription("SmartPoster URL & text", MockNdefMessages.SMART_POSTER_URL_AND_TEXT));
adapter.add(new TagDescription("SmartPoster URL", MockNdefMessages.SMART_POSTER_URL_NO_TEXT));
adapter.add(new TagDescription("VCARD", MockNdefMessages.VCARD));
adapter.add(new TagDescription("URI", MockNdefMessages.URI));
setListAdapter(adapter);
mAdapter = adapter;
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
TagDescription description = mAdapter.getItem(position);
Intent intent = new Intent(NfcAdapter.ACTION_TAG_DISCOVERED);
intent.putExtra(NfcAdapter.EXTRA_NDEF_MESSAGES, description.msgs);
startActivity(intent);
}
}
|
