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@ -33,8 +33,8 @@ import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.io.PrintStream;//////
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//添加包。类。对象等
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public class BackupUtils {
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public class BackupUtils {
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private static final String TAG = "BackupUtils";
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private static final String TAG = "BackupUtils";
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@ -42,9 +42,9 @@ public class BackupUtils {
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private static BackupUtils sInstance;
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private static BackupUtils sInstance;
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public static synchronized BackupUtils getInstance(Context context) {
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public static synchronized BackupUtils getInstance(Context context) {
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if (sInstance == null) {
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if (sInstance == null) {//如果实例为空则创建新实例
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sInstance = new BackupUtils(context);
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sInstance = new BackupUtils(context);
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}
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}//返回实例
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return sInstance;
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return sInstance;
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}
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}
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@ -72,19 +72,19 @@ public class BackupUtils {
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private static boolean externalStorageAvailable() {
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private static boolean externalStorageAvailable() {
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return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
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return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
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}
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}
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//将笔记·导出文本,返回导出时的状态码
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public int exportToText() {
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public int exportToText() {
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return mTextExport.exportToText();
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return mTextExport.exportToText();
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}
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}
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//获取导出文本文件名
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public String getExportedTextFileName() {
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public String getExportedTextFileName() {
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return mTextExport.mFileName;
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return mTextExport.mFileName;
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}
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}
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//获得到处文本文件目录
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public String getExportedTextFileDir() {
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public String getExportedTextFileDir() {
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return mTextExport.mFileDirectory;
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return mTextExport.mFileDirectory;
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}
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}
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//负责将笔记导出为文本
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private static class TextExport {
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private static class TextExport {
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private static final String[] NOTE_PROJECTION = {
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private static final String[] NOTE_PROJECTION = {
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NoteColumns.ID,
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NoteColumns.ID,
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@ -93,11 +93,11 @@ public class BackupUtils {
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NoteColumns.TYPE
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NoteColumns.TYPE
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};
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};
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private static final int NOTE_COLUMN_ID = 0;
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private static final int NOTE_COLUMN_ID = 0;//查询结果中笔记id所在列的索引
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private static final int NOTE_COLUMN_MODIFIED_DATE = 1;
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private static final int NOTE_COLUMN_MODIFIED_DATE = 1;//查询结果中笔记上次修改时间所在的索引
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private static final int NOTE_COLUMN_SNIPPET = 2;
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private static final int NOTE_COLUMN_SNIPPET = 2;//查询摘要所在索引
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private static final String[] DATA_PROJECTION = {
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private static final String[] DATA_PROJECTION = {
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DataColumns.CONTENT,
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DataColumns.CONTENT,
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@ -106,7 +106,7 @@ public class BackupUtils {
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DataColumns.DATA2,
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DataColumns.DATA2,
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DataColumns.DATA3,
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DataColumns.DATA3,
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DataColumns.DATA4,
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DataColumns.DATA4,
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};
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};//定义静态不可变数据列
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private static final int DATA_COLUMN_CONTENT = 0;
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private static final int DATA_COLUMN_CONTENT = 0;
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@ -114,24 +114,24 @@ public class BackupUtils {
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private static final int DATA_COLUMN_CALL_DATE = 2;
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private static final int DATA_COLUMN_CALL_DATE = 2;
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private static final int DATA_COLUMN_PHONE_NUMBER = 4;
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private static final int DATA_COLUMN_PHONE_NUMBER = 4;//定义以上数据列MIME类,呼叫日期,号码的索引初始值
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private final String [] TEXT_FORMAT;
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private final String [] TEXT_FORMAT;//定义带有3个元素字符串数组TEXT_FORMAT
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private static final int FORMAT_FOLDER_NAME = 0;
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private static final int FORMAT_FOLDER_NAME = 0;//格式化后目录名称FORMAT_FOLDER_NAME= 0
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private static final int FORMAT_NOTE_DATE = 1;
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private static final int FORMAT_NOTE_DATE = 1;
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private static final int FORMAT_NOTE_CONTENT = 2;
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private static final int FORMAT_NOTE_CONTENT = 2;//格式化后的笔记内容索引为2
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private Context mContext;
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private Context mContext;//声名Context类型和字符串类型
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private String mFileName;
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private String mFileName;//文件名称
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private String mFileDirectory;
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private String mFileDirectory;//文件目录路径
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public TextExport(Context context) {
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public TextExport(Context context) {
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TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
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TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);//初始化文件名称变量为控字符串
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mContext = context;
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mContext = context;
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mFileName = "";
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mFileName = "";
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mFileDirectory = "";
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mFileDirectory = "";
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}
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}//初始化文件路径mFileDirectory = ""为空
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//创建TextExport对象
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private String getFormat(int id) {
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private String getFormat(int id) {
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return TEXT_FORMAT[id];
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return TEXT_FORMAT[id];
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}
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}
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@ -166,39 +166,39 @@ public class BackupUtils {
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* Export note identified by id to a print stream
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* Export note identified by id to a print stream
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*/
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*/
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private void exportNoteToText(String noteId, PrintStream ps) {
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private void exportNoteToText(String noteId, PrintStream ps) {
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Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI,
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Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI,//查询CONTENT_DATA_URI对应的数据表
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DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[] {
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DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[] {
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noteId
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noteId
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}, null);
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}, null);
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//使用DataColumns.NOTE_ID是否为?限制查询条件,并查询noted对应的数据行
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if (dataCursor != null) {
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if (dataCursor != null) {//若查询不为空,则执行以下代码:
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if (dataCursor.moveToFirst()) {
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if (dataCursor.moveToFirst()) {//移动游标为第一条记录并循环记录
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do {
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do {
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String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE);
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String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE);//获取MIME_TYPE的值
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if (DataConstants.CALL_NOTE.equals(mimeType)) {
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if (DataConstants.CALL_NOTE.equals(mimeType)) {
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// Print phone number
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// Print phone number
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String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER);
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String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER);
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long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE);
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long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE);
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String location = dataCursor.getString(DATA_COLUMN_CONTENT);
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String location = dataCursor.getString(DATA_COLUMN_CONTENT);//从记录中获取phonenumber和calldate的值并输出号码
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if (!TextUtils.isEmpty(phoneNumber)) {
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if (!TextUtils.isEmpty(phoneNumber)) {//若电话号码不为空
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
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phoneNumber));
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phoneNumber));//输出电话号码输出到PrintStream实例PS中
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}
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}
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// Print call date
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// Print call date
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
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.format(mContext.getString(R.string.format_datetime_mdhm),
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.format(mContext.getString(R.string.format_datetime_mdhm),
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callDate)));
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callDate)));//输出通话日期信息到PrintStream中
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// Print call attachment location
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// Print call attachment location
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if (!TextUtils.isEmpty(location)) {
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if (!TextUtils.isEmpty(location)) {//若位置信息不为空
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
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location));
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location));
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}
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}//输出位置信息到PrintStream实例PS中
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} else if (DataConstants.NOTE.equals(mimeType)) {
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} else if (DataConstants.NOTE.equals(mimeType)) {//若数据类型为Note,则执行以下语句
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String content = dataCursor.getString(DATA_COLUMN_CONTENT);
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String content = dataCursor.getString(DATA_COLUMN_CONTENT);//从Cursor中获取信息
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if (!TextUtils.isEmpty(content)) {
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if (!TextUtils.isEmpty(content)) {
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
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ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
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content));
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content));//将内容信息格式化输出rintStream实例PS中
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}
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}
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}
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}
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} while (dataCursor.moveToNext());
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} while (dataCursor.moveToNext());
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@ -210,74 +210,74 @@ public class BackupUtils {
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ps.write(new byte[] {
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ps.write(new byte[] {
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Character.LINE_SEPARATOR, Character.LETTER_NUMBER
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Character.LINE_SEPARATOR, Character.LETTER_NUMBER
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});
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});
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} catch (IOException e) {
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} catch (IOException e) {//若出现IO异常,则廖永Log类的e()方法将异常信息输出日志中
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Log.e(TAG, e.toString());
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Log.e(TAG, e.toString());
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}
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}
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}
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}
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//使用rintStream实例PS的write()方法写入字节数组到输出流中,包括换行和字母数字
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/**
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/**
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* Note will be exported as text which is user readable
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* Note will be exported as text which is user readable
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*/
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*/
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public int exportToText() {
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public int exportToText() {//定义exportToText(),返回值类型为整型
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if (!externalStorageAvailable()) {
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if (!externalStorageAvailable()) {
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Log.d(TAG, "Media was not mounted");
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Log.d(TAG, "Media was not mounted");
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return STATE_SD_CARD_UNMOUONTED;
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return STATE_SD_CARD_UNMOUONTED;
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}
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}
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//若外部存储不可用,输出日记信息,返回表示Media was not mounted
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PrintStream ps = getExportToTextPrintStream();
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PrintStream ps = getExportToTextPrintStream();//获取打印输出
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if (ps == null) {
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if (ps == null) {
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Log.e(TAG, "get print stream error");
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Log.e(TAG, "get print stream error");
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return STATE_SYSTEM_ERROR;
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return STATE_SYSTEM_ERROR;
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}
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}//若获取不到打印输出,输出get print stream error",并返回错误
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// First export folder and its notes
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// First export folder and its notes
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Cursor folderCursor = mContext.getContentResolver().query(
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Cursor folderCursor = mContext.getContentResolver().query(//声名Cursor类的变量folder,存储调查结果
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Notes.CONTENT_NOTE_URI,
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Notes.CONTENT_NOTE_URI,
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NOTE_PROJECTION,
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NOTE_PROJECTION,//调用getContentResolver(),查询目标为Note表中数据和NOTE_PROJECTION指定列
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"(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND "
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"(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND "
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+ NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR "
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+ NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR "
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+ NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER, null, null);
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+ NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER, null, null);
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//限定查询条件为文件夹且父类文件夹不是回收站
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if (folderCursor != null) {
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if (folderCursor != null) {//判断folder是否为空
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if (folderCursor.moveToFirst()) {
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if (folderCursor.moveToFirst()) {
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do {
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do {
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// Print folder's name
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// Print folder's name
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String folderName = "";
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String folderName = "";//遍历查询文件夹中所有文件夹记录
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if(folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) {
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if(folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) {
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folderName = mContext.getString(R.string.call_record_folder_name);
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folderName = mContext.getString(R.string.call_record_folder_name);//若记录对应通话记录文件夹,给folder赋值Notes.ID_CALL_RECORD_FOLDER
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} else {
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} else {//否则folder赋值为记录的摘要字段值
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folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET);
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folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET);
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}
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}
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if (!TextUtils.isEmpty(folderName)) {
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if (!TextUtils.isEmpty(folderName)) {
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ps.println(String.format(getFormat(FORMAT_FOLDER_NAME), folderName));
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ps.println(String.format(getFormat(FORMAT_FOLDER_NAME), folderName));
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}
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}
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String folderId = folderCursor.getString(NOTE_COLUMN_ID);
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String folderId = folderCursor.getString(NOTE_COLUMN_ID);//获取当前记录对应文件夹id并赋值给folder
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exportFolderToText(folderId, ps);
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exportFolderToText(folderId, ps);
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} while (folderCursor.moveToNext());
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} while (folderCursor.moveToNext());//将当前记录文件夹导出为文本形式,结果写入PS中
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|
}
|
|
|
|
}
|
|
|
|
folderCursor.close();
|
|
|
|
folderCursor.close();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Export notes in root's folder
|
|
|
|
// Export notes in root's folder
|
|
|
|
Cursor noteCursor = mContext.getContentResolver().query(
|
|
|
|
Cursor noteCursor = mContext.getContentResolver().query(//通过getContentResolver()获取resolver对象,并调用querty方法查询
|
|
|
|
Notes.CONTENT_NOTE_URI,
|
|
|
|
Notes.CONTENT_NOTE_URI,//查询URI
|
|
|
|
NOTE_PROJECTION,
|
|
|
|
NOTE_PROJECTION,//查询列
|
|
|
|
NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID
|
|
|
|
NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID
|
|
|
|
+ "=0", null, null);
|
|
|
|
+ "=0", null, null);//限制查询类型为Notes.TYPE_NOTE,且父id为0的note记录
|
|
|
|
|
|
|
|
|
|
|
|
if (noteCursor != null) {
|
|
|
|
if (noteCursor != null) {
|
|
|
|
if (noteCursor.moveToFirst()) {
|
|
|
|
if (noteCursor.moveToFirst()) {//将游标移到查询结果的第一条记录
|
|
|
|
do {
|
|
|
|
do {
|
|
|
|
ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
|
|
|
|
ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
|
|
|
|
mContext.getString(R.string.format_datetime_mdhm),
|
|
|
|
mContext.getString(R.string.format_datetime_mdhm),
|
|
|
|
noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
|
|
|
|
noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));//根据时间格式化字符串的时间戳,将时间转换成字符串格式
|
|
|
|
// Query data belong to this note
|
|
|
|
// Query data belong to this note
|
|
|
|
String noteId = noteCursor.getString(NOTE_COLUMN_ID);
|
|
|
|
String noteId = noteCursor.getString(NOTE_COLUMN_ID);
|
|
|
|
exportNoteToText(noteId, ps);
|
|
|
|
exportNoteToText(noteId, ps);
|
|
|
|
} while (noteCursor.moveToNext());
|
|
|
|
} while (noteCursor.moveToNext());
|
|
|
|
}
|
|
|
|
}//或i去当前Note记录的id,吧id对应数据写入输出流中
|
|
|
|
noteCursor.close();
|
|
|
|
noteCursor.close();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
ps.close();
|
|
|
|
ps.close();//关闭游标
|
|
|
|
|
|
|
|
|
|
|
|
return STATE_SUCCESS;
|
|
|
|
return STATE_SUCCESS;
|
|
|
|
}
|
|
|
|
}
|
|
|
@ -286,21 +286,21 @@ public class BackupUtils {
|
|
|
|
* Get a print stream pointed to the file {@generateExportedTextFile}
|
|
|
|
* Get a print stream pointed to the file {@generateExportedTextFile}
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
private PrintStream getExportToTextPrintStream() {
|
|
|
|
private PrintStream getExportToTextPrintStream() {
|
|
|
|
File file = generateFileMountedOnSDcard(mContext, R.string.file_path,
|
|
|
|
File file = generateFileMountedOnSDcard(mContext, R.string.file_path,//使用getExportToTextPrintStream()再sd卡上生成指定名称和路径的文本文件
|
|
|
|
R.string.file_name_txt_format);
|
|
|
|
R.string.file_name_txt_format);
|
|
|
|
if (file == null) {
|
|
|
|
if (file == null) {
|
|
|
|
Log.e(TAG, "create file to exported failed");
|
|
|
|
Log.e(TAG, "create file to exported failed");
|
|
|
|
return null;
|
|
|
|
return null;//若生成文件失败,返回null,再logcat输出错误信息
|
|
|
|
}
|
|
|
|
}
|
|
|
|
mFileName = file.getName();
|
|
|
|
mFileName = file.getName();
|
|
|
|
mFileDirectory = mContext.getString(R.string.file_path);
|
|
|
|
mFileDirectory = mContext.getString(R.string.file_path);//将成功创建文件保存为FoleNAMe,路径柏村委mFileDiectory
|
|
|
|
PrintStream ps = null;
|
|
|
|
PrintStream ps = null;
|
|
|
|
try {
|
|
|
|
try {
|
|
|
|
FileOutputStream fos = new FileOutputStream(file);
|
|
|
|
FileOutputStream fos = new FileOutputStream(file);
|
|
|
|
ps = new PrintStream(fos);
|
|
|
|
ps = new PrintStream(fos);//创建对象fos,用于写入文件
|
|
|
|
} catch (FileNotFoundException e) {
|
|
|
|
} catch (FileNotFoundException e) {//使用fos创建PrintStream对象PS,一边向文件夹写入数据
|
|
|
|
e.printStackTrace();
|
|
|
|
e.printStackTrace();
|
|
|
|
return null;
|
|
|
|
return null;//若无法找到写入目标文件,再logcat输出错误信息,并返回null
|
|
|
|
} catch (NullPointerException e) {
|
|
|
|
} catch (NullPointerException e) {
|
|
|
|
e.printStackTrace();
|
|
|
|
e.printStackTrace();
|
|
|
|
return null;
|
|
|
|
return null;
|
|
|
@ -314,28 +314,28 @@ public class BackupUtils {
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
|
|
|
|
private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
|
|
|
|
StringBuilder sb = new StringBuilder();
|
|
|
|
StringBuilder sb = new StringBuilder();
|
|
|
|
sb.append(Environment.getExternalStorageDirectory());
|
|
|
|
sb.append(Environment.getExternalStorageDirectory());//再strtingbuilder中添加SD卡根目录路径
|
|
|
|
sb.append(context.getString(filePathResId));
|
|
|
|
sb.append(context.getString(filePathResId));
|
|
|
|
File filedir = new File(sb.toString());
|
|
|
|
File filedir = new File(sb.toString());//添加文件路径字符串资源id,并返回file对象表示该目录
|
|
|
|
sb.append(context.getString(
|
|
|
|
sb.append(context.getString(
|
|
|
|
fileNameFormatResId,
|
|
|
|
fileNameFormatResId,
|
|
|
|
DateFormat.format(context.getString(R.string.format_date_ymd),
|
|
|
|
DateFormat.format(context.getString(R.string.format_date_ymd),
|
|
|
|
System.currentTimeMillis())));
|
|
|
|
System.currentTimeMillis())));//再StringBuilder添加文件名格式字符串资源id,并使用dateFormat替换为当前日期格式化字符串
|
|
|
|
File file = new File(sb.toString());
|
|
|
|
File file = new File(sb.toString());
|
|
|
|
|
|
|
|
//返回表示最终创建的文件夹对象
|
|
|
|
try {
|
|
|
|
try {
|
|
|
|
if (!filedir.exists()) {
|
|
|
|
if (!filedir.exists()) {
|
|
|
|
filedir.mkdir();
|
|
|
|
filedir.mkdir();
|
|
|
|
}
|
|
|
|
}//判断指定目录是否存在,若不存在创建
|
|
|
|
if (!file.exists()) {
|
|
|
|
if (!file.exists()) {
|
|
|
|
file.createNewFile();
|
|
|
|
file.createNewFile();
|
|
|
|
}
|
|
|
|
}//判断指定目录是否存在,若不存在创建
|
|
|
|
return file;
|
|
|
|
return file;//返回创建对象
|
|
|
|
} catch (SecurityException e) {
|
|
|
|
} catch (SecurityException e) {
|
|
|
|
e.printStackTrace();
|
|
|
|
e.printStackTrace();
|
|
|
|
} catch (IOException e) {
|
|
|
|
} catch (IOException e) {
|
|
|
|
e.printStackTrace();
|
|
|
|
e.printStackTrace();
|
|
|
|
}
|
|
|
|
}//如果不能在指定目录下创建新的文件,则抛出IOException异常
|
|
|
|
|
|
|
|
|
|
|
|
return null;
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
}
|
|
|
|