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Update Note.java

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pull/2/head
puavjn2x9 12 months ago
parent 05bcd2a9b6
commit 62840b2654
1 changed files with 36 additions and 36 deletions
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72
src/net/micode/notes/model/Note.java
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@ -15,15 +15,15 @@
*/
package net.micode.notes.model;
import android.content.ContentProviderOperation;
import android.content.ContentProviderResult;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.OperationApplicationException;
import android.net.Uri;
import android.os.RemoteException;
import android.util.Log;
import android.content.ContentProviderOperation;//批量的更新、插入、删除数据。
import android.content.ContentProviderResult;//操作的结果
import android.content.ContentUris;//用于添加和获取Uri后面的ID
import android.content.ContentValues;//一种用来存储基本数据类型数据的存储机制
import android.content.Context;//需要用该类来弄清楚调用者的实例
import android.content.OperationApplicationException;//操作应用程序容错
import android.net.Uri;//表示待操作的数据
import android.os.RemoteException;//远程容错
import android.util.Log;//输出日志，比如说出错、警告等
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.CallNote;
@ -49,16 +49,17 @@ public class Note {
values.put(NoteColumns.MODIFIED_DATE, createdTime);
values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
values.put(NoteColumns.LOCAL_MODIFIED, 1);
values.put(NoteColumns.PARENT_ID, folderId);
values.put(NoteColumns.PARENT_ID, folderId);//将数据写入数据库表格
Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
//ContentResolver()主要是实现外部应用对ContentProvider中的数据
//进行添加、删除、修改和查询操作
long noteId = 0;
try {
noteId = Long.valueOf(uri.getPathSegments().get(1));
} catch (NumberFormatException e) {
Log.e(TAG, "Get note id error :" + e.toString());
noteId = 0;
}
}//try-catch异常处理
if (noteId == -1) {
throw new IllegalStateException("Wrong note id:" + noteId);
}
@ -68,37 +69,37 @@ public class Note {
public Note() {
mNoteDiffValues = new ContentValues();
mNoteData = new NoteData();
}
}//定义两个变量用来存储便签的数据，一个是存储便签属性、一个是存储便签内容
public void setNoteValue(String key, String value) {
mNoteDiffValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
}//设置数据库表格的标签属性数据
public void setTextData(String key, String value) {
mNoteData.setTextData(key, value);
}
}//设置数据库表格的标签文本内容的数据
public void setTextDataId(long id) {
mNoteData.setTextDataId(id);
}
}//设置文本数据的ID
public long getTextDataId() {
return mNoteData.mTextDataId;
}
}//得到文本数据的ID
public void setCallDataId(long id) {
mNoteData.setCallDataId(id);
}
}//设置电话号码数据的ID
public void setCallData(String key, String value) {
mNoteData.setCallData(key, value);
}
}//得到电话号码数据的ID
public boolean isLocalModified() {
return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
}
}//判断是否是本地修改
public boolean syncNote(Context context, long noteId) {
if (noteId <= 0) {
@ -128,16 +129,16 @@ public class Note {
}
return true;
}
}//判断数据是否同步
private class NoteData {
private class NoteData {//定义一个基本的便签内容的数据类，主要包含文本数据和电话号码数据
private long mTextDataId;
private ContentValues mTextDataValues;
private ContentValues mTextDataValues;//文本数据
private long mCallDataId;
private ContentValues mCallDataValues;
private ContentValues mCallDataValues;//电话号码数据
private static final String TAG = "NoteData";
@ -147,26 +148,25 @@ public class Note {
mTextDataId = 0;
mCallDataId = 0;
}
boolean isLocalModified() {
boolean isLocalModified() {//判断当前对象是否有本地修改
return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
}
void setTextDataId(long id) {
void setTextDataId(long id) {//设置文本数据的ID
if(id <= 0) {
throw new IllegalArgumentException("Text data id should larger than 0");
}
mTextDataId = id;
}
void setCallDataId(long id) {
void setCallDataId(long id) {//设置电话号码数据的ID
if (id <= 0) {
throw new IllegalArgumentException("Call data id should larger than 0");
}
mCallDataId = id;
}
void setCallData(String key, String value) {
void setCallData(String key, String value) {////得到电话号码数据的ID
mCallDataValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
@ -177,17 +177,17 @@ public class Note {
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
//下面函数的作用是将新的数据通过Uri的操作存储到数据库
Uri pushIntoContentResolver(Context context, long noteId) {
/**
* Check for safety
*/
if (noteId <= 0) {
throw new IllegalArgumentException("Wrong note id:" + noteId);
}
}//判断数据是否合法
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
ContentProviderOperation.Builder builder = null;
ContentProviderOperation.Builder builder = null;//数据库的操作列表
if(mTextDataValues.size() > 0) {
mTextDataValues.put(DataColumns.NOTE_ID, noteId);
@ -197,7 +197,7 @@ public class Note {
mTextDataValues);
try {
setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
} catch (NumberFormatException e) {
} catch (NumberFormatException e) {//出错则清空
Log.e(TAG, "Insert new text data fail with noteId" + noteId);
mTextDataValues.clear();
return null;
@ -209,7 +209,7 @@ public class Note {
operationList.add(builder.build());
}
mTextDataValues.clear();
}
}//把文本数据存入DataColumns
if(mCallDataValues.size() > 0) {
mCallDataValues.put(DataColumns.NOTE_ID, noteId);
@ -231,7 +231,7 @@ public class Note {
operationList.add(builder.build());
}
mCallDataValues.clear();
}
}//把电话号码数据存入DataColumns
if (operationList.size() > 0) {
try {
@ -246,7 +246,7 @@ public class Note {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
return null;
}
}
}//存储过程中的异常处理
return null;
}
}

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