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@ -14,48 +14,54 @@
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* limitations under the License.
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*/
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package net.micode.notes.model;
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import android.content.ContentProviderOperation;
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import android.content.ContentProviderResult;
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import android.content.ContentUris;
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import android.content.ContentValues;
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import android.content.Context;
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import android.content.OperationApplicationException;
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import android.net.Uri;
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import android.os.RemoteException;
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import android.util.Log;
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package net.micode.notes.model;//创建一个包，用于区别类名的命名空间
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import android.content.ContentProviderOperation;//批量的更新、插入、删除数据。
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import android.content.ContentProviderResult;//操作的结果
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import android.content.ContentUris;//用于添加和获取Uri后面的ID
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import android.content.ContentValues;//一种用来存储基本数据类型数据的存储机制
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import android.content.Context;//需要用该类来弄清楚调用者的实例
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import android.content.OperationApplicationException;//操作应用程序容错
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import android.net.Uri;//表示待操作的数据
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import android.os.RemoteException;//远程容错
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import android.util.Log;//输出日志，比如说出错、警告等
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//引入其余包
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.CallNote;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.data.Notes.TextNote;
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import java.util.ArrayList;
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import java.util.ArrayList;//系统的自带的可变数组的类
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public class Note {
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private ContentValues mNoteDiffValues;
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private NoteData mNoteData;
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//mNoteDiffValues和mNoteData
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private static final String TAG = "Note";
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/**
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* Create a new note id for adding a new note to databases
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* 创建一个新的笔记id为了加入将一个新的笔记加入数据库
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*/
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public static synchronized long getNewNoteId(Context context, long folderId) {
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// Create a new note in the database
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// 在数据库中加入一个新的笔记
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ContentValues values = new ContentValues();
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long createdTime = System.currentTimeMillis();
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values.put(NoteColumns.CREATED_DATE, createdTime);
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values.put(NoteColumns.MODIFIED_DATE, createdTime);
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values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
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values.put(NoteColumns.LOCAL_MODIFIED, 1);
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values.put(NoteColumns.PARENT_ID, folderId);
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long createdTime = System.currentTimeMillis();//创建一个变量记录创建的时间
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values.put(NoteColumns.CREATED_DATE, createdTime);//将创建日期的值付给 CREATED_DATE创建时间
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values.put(NoteColumns.MODIFIED_DATE, createdTime);//将创建日期的值付给 MODIFIED_DATE修改时间
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values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);//把type的值赋为0
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values.put(NoteColumns.LOCAL_MODIFIED, 1);//把LOCAL_MODIFIED 本地修改 的值赋为1
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values.put(NoteColumns.PARENT_ID, folderId);//把文件夹id赋给PARENT_ID 父类id
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Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
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long noteId = 0;
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try {
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noteId = Long.valueOf(uri.getPathSegments().get(1));
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} catch (NumberFormatException e) {
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}
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catch (NumberFormatException e) {
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Log.e(TAG, "Get note id error :" + e.toString());
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noteId = 0;
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}
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@ -153,7 +159,7 @@ public class Note {
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}
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void setTextDataId(long id) {
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if(id <= 0) {
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if (id <= 0) {
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throw new IllegalArgumentException("Text data id should larger than 0");
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}
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mTextDataId = id;
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@ -189,7 +195,7 @@ public class Note {
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ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
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ContentProviderOperation.Builder builder = null;
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if(mTextDataValues.size() > 0) {
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if (mTextDataValues.size() > 0) {
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mTextDataValues.put(DataColumns.NOTE_ID, noteId);
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if (mTextDataId == 0) {
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mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
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@ -197,12 +203,14 @@ public class Note {
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mTextDataValues);
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try {
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setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
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} catch (NumberFormatException e) {
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}
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catch (NumberFormatException e) {
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Log.e(TAG, "Insert new text data fail with noteId" + noteId);
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mTextDataValues.clear();
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return null;
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}
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} else {
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}
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else {
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builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
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Notes.CONTENT_DATA_URI, mTextDataId));
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builder.withValues(mTextDataValues);
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@ -211,7 +219,7 @@ public class Note {
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mTextDataValues.clear();
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}
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if(mCallDataValues.size() > 0) {
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if (mCallDataValues.size() > 0) {
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mCallDataValues.put(DataColumns.NOTE_ID, noteId);
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if (mCallDataId == 0) {
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mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
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@ -219,12 +227,14 @@ public class Note {
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mCallDataValues);
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try {
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setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
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} catch (NumberFormatException e) {
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}
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catch (NumberFormatException e) {
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Log.e(TAG, "Insert new call data fail with noteId" + noteId);
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mCallDataValues.clear();
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return null;
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}
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} else {
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}
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else {
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builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
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Notes.CONTENT_DATA_URI, mCallDataId));
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builder.withValues(mCallDataValues);
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@ -239,10 +249,12 @@ public class Note {
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Notes.AUTHORITY, operationList);
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return (results == null || results.length == 0 || results[0] == null) ? null
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: ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
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} catch (RemoteException e) {
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}
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catch (RemoteException e) {
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Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
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return null;
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} catch (OperationApplicationException e) {
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}
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catch (OperationApplicationException e) {
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Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
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return null;
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}
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