Merge branch 'master' of https://bdgit.educoder.net/pfqs8cjuk/gitProject
左丹妮
2 years ago
commit
d6d45592e6
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package net.micode.notes.model;
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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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public class Note {
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// private ContentValues mNoteDiffValues;
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ContentValues mNoteDiffValues;//
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private NoteData 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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*/
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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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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);//将数据写入数据库表格
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Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
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//ContentResolver()主要是实现外部应用对ContentProvider中的数据
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//进行添加、删除、修改和查询操作
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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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Log.e(TAG, "Get note id error :" + e.toString());
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noteId = 0;
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}//try-catch异常处理
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if (noteId == -1) {
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throw new IllegalStateException("Wrong note id:" + noteId);
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}
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return noteId;
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}
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public Note() {
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mNoteDiffValues = new ContentValues();
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mNoteData = new NoteData();
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}//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
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public void setNoteValue(String key, String value) {
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mNoteDiffValues.put(key, value);
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mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
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mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
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}//设置数据库表格的标签属性数据
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public void setTextData(String key, String value) {
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mNoteData.setTextData(key, value);
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}//设置数据库表格的标签文本内容的数据
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public void setTextDataId(long id) {
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mNoteData.setTextDataId(id);
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}//设置文本数据的ID
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public long getTextDataId() {
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return mNoteData.mTextDataId;
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}//得到文本数据的ID
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public void setCallDataId(long id) {
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mNoteData.setCallDataId(id);
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}//设置电话号码数据的ID
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public void setCallData(String key, String value) {
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mNoteData.setCallData(key, value);
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}//得到电话号码数据的ID
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public boolean isLocalModified() {
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return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
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}//判断是否是本地修改
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public boolean syncNote(Context context, long noteId) {
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if (noteId <= 0) {
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throw new IllegalArgumentException("Wrong note id:" + noteId);
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}
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if (!isLocalModified()) {
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return true;
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}
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/**
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* In theory, once data changed, the note should be updated on {@link NoteColumns#LOCAL_MODIFIED} and
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* {@link NoteColumns#MODIFIED_DATE}. For data safety, though update note fails, we also update the
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* note data info
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*/
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if (context.getContentResolver().update(
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ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
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null) == 0) {
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Log.e(TAG, "Update note error, should not happen");
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// Do not return, fall through
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}
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mNoteDiffValues.clear();
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if (mNoteData.isLocalModified()
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&& (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
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return false;
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}
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return true;
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}//判断数据是否同步
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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
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private long mTextDataId;
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private ContentValues mTextDataValues;//文本数据
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private long mCallDataId;
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private ContentValues mCallDataValues;//电话号码数据
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private static final String TAG = "NoteData";
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public NoteData() {
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mTextDataValues = new ContentValues();
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mCallDataValues = new ContentValues();
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mTextDataId = 0;
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mCallDataId = 0;
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}
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//下面是上述几个函数的具体实现
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boolean isLocalModified() {
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return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
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}
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void setTextDataId(long id) {
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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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}
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void setCallDataId(long id) {
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if (id <= 0) {
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throw new IllegalArgumentException("Call data id should larger than 0");
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}
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mCallDataId = id;
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}
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void setCallData(String key, String value) {
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mCallDataValues.put(key, value);
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mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
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mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
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}
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void setTextData(String key, String value) {
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mTextDataValues.put(key, value);
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mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
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mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
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}
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//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
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Uri pushIntoContentResolver(Context context, long noteId) {
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/**
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* Check for safety
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*/
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if (noteId <= 0) {
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throw new IllegalArgumentException("Wrong note id:" + noteId);
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}//判断数据是否合法
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ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
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ContentProviderOperation.Builder builder = null;//数据库的操作列表
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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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Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
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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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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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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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operationList.add(builder.build());
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}
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mTextDataValues.clear();
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}//把文本数据存入DataColumns
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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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Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
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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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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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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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operationList.add(builder.build());
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}
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mCallDataValues.clear();
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}//把电话号码数据存入DataColumns
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if (operationList.size() > 0) {
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try {
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ContentProviderResult[] results = context.getContentResolver().applyBatch(
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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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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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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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}//存储过程中的异常处理
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return null;
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}
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}
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}
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@ -0,0 +1,116 @@
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.micode.notes.widget;
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import android.app.PendingIntent;
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import android.appwidget.AppWidgetManager;
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import android.appwidget.AppWidgetProvider;
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import android.content.ContentValues;
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import android.content.Context;
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import android.content.Intent;
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import android.database.Cursor;
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import android.util.Log;
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import android.widget.RemoteViews;
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import net.micode.notes.R;
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.tool.ResourceParser;
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import net.micode.notes.ui.NoteEditActivity;
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import net.micode.notes.ui.NotesListActivity;
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public abstract class NoteWidgetProvider extends AppWidgetProvider {
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public static final String [] PROJECTION = new String [] {
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NoteColumns.ID,
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NoteColumns.BG_COLOR_ID,
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NoteColumns.SNIPPET
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};
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public static final int COLUMN_ID = 0;
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public static final int COLUMN_BG_COLOR_ID = 1;
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public static final int COLUMN_SNIPPET = 2;
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private static final String TAG = "NoteWidgetProvider";
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@Override
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public void onDeleted(Context context, int[] appWidgetIds) {
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ContentValues values = new ContentValues();
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values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
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for (int i = 0; i < appWidgetIds.length; i++) {
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context.getContentResolver().update(Notes.CONTENT_NOTE_URI,
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values,
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NoteColumns.WIDGET_ID + "=?",
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new String[] { String.valueOf(appWidgetIds[i])});
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}
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}
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private Cursor getNoteWidgetInfo(Context context, int widgetId) {
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return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
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PROJECTION,
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NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",
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new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) },
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null);
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}
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protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
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update(context, appWidgetManager, appWidgetIds, false);
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}
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private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
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boolean privacyMode) {
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for (int i = 0; i < appWidgetIds.length; i++) {
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if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
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int bgId = ResourceParser.getDefaultBgId(context);
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String snippet = "";
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Intent intent = new Intent(context, NoteEditActivity.class);
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intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
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intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
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intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
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Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]);
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if (c != null && c.moveToFirst()) {
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if (c.getCount() > 1) {
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Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]);
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c.close();
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return;
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}
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snippet = c.getString(COLUMN_SNIPPET);
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bgId = c.getInt(COLUMN_BG_COLOR_ID);
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intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
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intent.setAction(Intent.ACTION_VIEW);
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} else {
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snippet = context.getResources().getString(R.string.widget_havenot_content);
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intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
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}
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if (c != null) {
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c.close();
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}
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RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
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rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
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intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
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/**
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* Generate the pending intent to start host for the widget
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*/
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PendingIntent pendingIntent = null;
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if (privacyMode) {
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rv.setTextViewText(R.id.widget_text,
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context.getString(R.string.widget_under_visit_mode));
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pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
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context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
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} else {
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rv.setTextViewText(R.id.widget_text, snippet);
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pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
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PendingIntent.FLAG_UPDATE_CURRENT);
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}
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rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
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appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
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}
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}
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}
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protected abstract int getBgResourceId(int bgId);
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protected abstract int getLayoutId();
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protected abstract int getWidgetType();
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}
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