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
|
/*
* Copyright 2008 ZXing authors
*
* 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.google.zxing.client.android;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
/**
* An HTML-based help screen with Back and Done buttons at the bottom.
*
* @author dswitkin@google.com (Daniel Switkin)
*/
public final class HelpActivity extends Activity {
private static final String TAG = HelpActivity.class.getName();
private static final String[] BUGGY_MODEL_SUBSTRINGS = {"Behold II", "Pulse", "Geeksphone"};
private static final Uri BUGGY_URI =
Uri.parse("http://code.google.com/p/zxing/wiki/FrequentlyAskedQuestions");
// Use this key and one of the values below when launching this activity via intent. If not
// present, the default page will be loaded.
public static final String REQUESTED_PAGE_KEY = "requested_page_key";
public static final String DEFAULT_PAGE = "index.html";
public static final String WHATS_NEW_PAGE = "whatsnew.html";
private static final String BASE_URL = "file:///android_asset/html/";
private WebView webView;
private Button backButton;
private final Button.OnClickListener backListener = new Button.OnClickListener() {
public void onClick(View view) {
webView.goBack();
}
};
private final Button.OnClickListener doneListener = new Button.OnClickListener() {
public void onClick(View view) {
finish();
}
};
private final DialogInterface.OnClickListener groupsListener =
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogInterface, int i) {
Intent intent = new Intent(Intent.ACTION_VIEW, BUGGY_URI);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
HelpActivity.this.startActivity(intent);
}
};
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.help);
webView = (WebView)findViewById(R.id.help_contents);
webView.setWebViewClient(new HelpClient());
Intent intent = getIntent();
if (icicle != null) {
webView.restoreState(icicle);
} else if (intent != null) {
String page = intent.getStringExtra(REQUESTED_PAGE_KEY);
if (page != null && page.length() > 0) {
webView.loadUrl(BASE_URL + page);
} else {
webView.loadUrl(BASE_URL + DEFAULT_PAGE);
}
} else {
webView.loadUrl(BASE_URL + DEFAULT_PAGE);
}
backButton = (Button)findViewById(R.id.back_button);
backButton.setOnClickListener(backListener);
Button doneButton = (Button)findViewById(R.id.done_button);
doneButton.setOnClickListener(doneListener);
}
@Override
public void onResume() {
super.onResume();
checkBuggyDevice();
}
private void checkBuggyDevice() {
String model = Build.MODEL;
Log.i(TAG, "Build model is " + model);
if (model != null) {
for (String buggyModelSubstring : BUGGY_MODEL_SUBSTRINGS) {
if (model.contains(buggyModelSubstring)) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(R.string.msg_buggy);
builder.setPositiveButton(R.string.button_ok, groupsListener);
builder.setNegativeButton(R.string.button_cancel, null);
builder.create().show();
break;
}
}
}
}
@Override
protected void onSaveInstanceState(Bundle state) {
webView.saveState(state);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (webView.canGoBack()) {
webView.goBack();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
private final class HelpClient extends WebViewClient {
@Override
public void onPageFinished(WebView view, String url) {
setTitle(view.getTitle());
backButton.setEnabled(view.canGoBack());
}
}
}
|
