Android 短信的備份與恢復（導入導出）

最近在做一個Android 備份軟件，剛剛把短信的備份與恢復做完。短信的備份主要是對數據庫mmssms.db的sms表進行數據的導出，當然這裡是跨應用的，所以要使用contendResolver來訪問，最後把數據導出成xml文件。恢復時再對xml文件解析。備份時注意，不要備份thread_id字段，否則恢復時，手機中查看不到恢復的短信。

源代碼下載在Linux公社的1號FTP服務器裡，下載地址：

FTP地址：ftp://www.linuxidc.com

用戶名：www.linuxidc.com

密碼：www.muu.cc

在 2011年LinuxIDC.com\10月\10月\Android 短信的備份與恢復（導入導出）

下載方法見 http://www.linuxidc.net/thread-1187-1-1.html

短信導出源碼：

1. package cn.sqk.sms;
3. import java.io.File;
4. import java.io.FileNotFoundException;
5. import java.io.FileOutputStream;
6. import java.io.PrintWriter;
7. import java.text.SimpleDateFormat;
8. import java.util.Date;
10. import org.dom4j.Document;
11. import org.dom4j.DocumentHelper;
12. import org.dom4j.Element;
13. import org.xmlpull.v1.XmlSerializer;
15. import cn.sqk.constants.SmsField;
17. import android.content.ContentResolver;
18. import android.content.Context;
19. import android.database.Cursor;
20. import android.database.sqlite.SQLiteException;
21. import android.net.Uri;
22. import android.os.Environment;
23. import android.util.Log;
24. import android.util.Xml;
25. import android.widget.Toast;
27. public class ExportSmsXml {
28. Context context;
29. public static final String SMS_URI_ALL = "content://sms/";
30. private FileOutputStream outStream = null;
31. private XmlSerializer serializer;
33. public ExportSmsXml(Context context) {
34. this.context = context;
35. }
37. public void xmlStart() {
39. String path = Environment.getExternalStorageDirectory().getPath() + "/exportSms";
40. File file = new File(path);
41. if (!file.exists()) {
42. file.mkdirs();
43. }
44. File file2 = new File(path, "message.xml");
45. try {
46. outStream = new FileOutputStream(file2);
47. serializer = Xml.newSerializer();
48. serializer.setOutput(outStream, "UTF-8");
49. serializer.startDocument("UTF-8", true);
50. serializer.startTag(null, "sms");
52. } catch (Exception e) {
53. e.printStackTrace();
54. }
55. }
57. public boolean createXml() throws Exception {
59. this.xmlStart();
60. Cursor cursor = null;
61. try {
62. ContentResolver conResolver = context.getContentResolver();
63. String[] projection = new String[] { SmsField.ADDRESS, SmsField.PERSON, SmsField.DATE, SmsField.PROTOCOL,
64. SmsField.READ, SmsField.STATUS, SmsField.TYPE, SmsField.REPLY_PATH_PRESENT,
65. SmsField.BODY,SmsField.LOCKED,SmsField.ERROR_CODE, SmsField.SEEN }; // type=1是收件箱，==2是發件箱;read=0表示未讀，read=1表示讀過，seen=0表示未讀，seen=1表示讀過
66. Uri uri = Uri.parse(SMS_URI_ALL);
67. cursor = conResolver.query(uri, projection, null, null, "_id asc");
68. if (cursor.moveToFirst()) {
69. // 查看數據庫sms表得知 subject和service_center始終是null所以這裡就不獲取它們的數據了。
70. String address;
71. String person;
72. String date;
73. String protocol;
74. String read;
75. String status;
76. String type;
77. String reply_path_present;
78. String body;
79. String locked;
80. String error_code;
81. String seen;
82. do {
83. // 如果address == null，xml文件中是不會生成該屬性的,為了保證解析時，屬性能夠根據索引一一對應，必須要保證所有的item標記的屬性數量和順序是一致的
84. address = cursor.getString(cursor.getColumnIndex(SmsField.ADDRESS));
85. if (address == null) {
86. address = "";
87. }
88. person = cursor.getString(cursor.getColumnIndex(SmsField.PERSON));
89. if (person == null) {
90. person = "";
91. }
92. date = cursor.getString(cursor.getColumnIndex(SmsField.DATE));
93. if (date == null) {
94. date = "";
95. }
96. protocol = cursor.getString(cursor.getColumnIndex(SmsField.PROTOCOL));
97. if (protocol == null) {// 為了便於xml解析
98. protocol = "";
99. }
100. read = cursor.getString(cursor.getColumnIndex(SmsField.READ));
101. if (read == null) {
102. read = "";
103. }
104. status = cursor.getString(cursor.getColumnIndex(SmsField.STATUS));
105. if (status == null) {
106. status = "";
107. }
108. type = cursor.getString(cursor.getColumnIndex(SmsField.TYPE));
109. if (type == null) {
110. type = "";
111. }
112. reply_path_present = cursor.getString(cursor.getColumnIndex(SmsField.REPLY_PATH_PRESENT));
113. if (reply_path_present == null) {// 為了便於XML解析
114. reply_path_present = "";
115. }
116. body = cursor.getString(cursor.getColumnIndex(SmsField.BODY));
117. if (body == null) {
118. body = "";
119. }
120. locked = cursor.getString(cursor.getColumnIndex(SmsField.LOCKED));
121. if (locked == null) {
122. locked = "";
123. }
124. error_code = cursor.getString(cursor.getColumnIndex(SmsField.ERROR_CODE));
125. if (error_code == null) {
126. error_code = "";
127. }
128. seen = cursor.getString(cursor.getColumnIndex(SmsField.SEEN));
129. if (seen == null) {
130. seen = "";
131. }
132. // 生成xml子標記
133. // 開始標記
134. serializer.startTag(null, "item");
135. // 加入屬性
136. serializer.attribute(null, SmsField.ADDRESS, address);
137. serializer.attribute(null, SmsField.PERSON, person);
138. serializer.attribute(null, SmsField.DATE, date);
139. serializer.attribute(null, SmsField.PROTOCOL, protocol);
140. serializer.attribute(null, SmsField.READ, read);
141. serializer.attribute(null, SmsField.STATUS, status);
142. serializer.attribute(null, SmsField.TYPE, type);
143. serializer.attribute(null, SmsField.REPLY_PATH_PRESENT, reply_path_present);
144. serializer.attribute(null, SmsField.BODY, body);
145. serializer.attribute(null, SmsField.LOCKED, locked);
146. serializer.attribute(null, SmsField.ERROR_CODE, error_code);
147. serializer.attribute(null, SmsField.SEEN, seen);
148. // 結束標記
149. serializer.endTag(null, "item");
151. } while (cursor.moveToNext());
152. } else {
154. return false;
155. }
157. } catch (SQLiteException ex) {
158. ex.printStackTrace();
159. Log.d("SQLiteException:", ex.getMessage());
160. }finally {
161. if(cursor != null) {
162. cursor.close();//手動關閉cursor，及時回收
163. }
164. }
165. serializer.endTag(null, "sms");
166. serializer.endDocument();
167. outStream.flush();
168. outStream.close();
169. return true;
170. }
171. }