p5bxhmze4
/
XiaoMi.Note
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update NotesProvider.java

Browse Source
main
xz 2 years ago
parent 7ea31e7611
commit e6e31bfc77
1 changed files with 35 additions and 31 deletions
Show Stats Download Patch File Download Diff File

66
app/src/main/java/net/micode/notes/data/NotesProvider.java
Unescape View File

@ -36,20 +36,23 @@ import net.micode.notes.data.NotesDatabaseHelper.TABLE;
public class NotesProvider extends ContentProvider {
private static final UriMatcher mMatcher;
private static final UriMatcher mMatcher;// 定义UriMatcher，用于匹配URI
private NotesDatabaseHelper mHelper;
private NotesDatabaseHelper mHelper;// 数据库帮助类
private static final String TAG = "NotesProvider";
private static final String TAG = "NotesProvider";// 日志输出标签
private static final int URI_NOTE = 1;
private static final int URI_NOTE_ITEM = 2;
private static final int URI_DATA = 3;
private static final int URI_DATA_ITEM = 4;
private static final int URI_NOTE = 1; // 笔记URI
private static final int URI_NOTE_ITEM = 2;// 单个笔记URI
private static final int URI_DATA = 3; // 笔记数据URI
private static final int URI_DATA_ITEM = 4;// 单个笔记数据URI
private static final int URI_SEARCH = 5;
private static final int URI_SEARCH_SUGGEST = 6;
private static final int URI_SEARCH = 5;// 搜索URI
private static final int URI_SEARCH_SUGGEST = 6;// 搜索建议URI
// 初始化UriMatcher
static {
mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
@ -65,6 +68,7 @@ public class NotesProvider extends ContentProvider {
* x'0A' represents the '\n' character in sqlite. For title and content in the search result,
* we will trim '\n' and white space in order to show more information.
*/
// 搜索结果显示的投影
private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
+ NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
+ "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + ","
@ -72,7 +76,7 @@ public class NotesProvider extends ContentProvider {
+ R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
// 搜索语句
private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
+ " FROM " + TABLE.NOTE
+ " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
@ -81,37 +85,37 @@ public class NotesProvider extends ContentProvider {
@Override
public boolean onCreate() {
mHelper = NotesDatabaseHelper.getInstance(getContext());
mHelper = NotesDatabaseHelper.getInstance(getContext());// 创建数据库帮助类实例
return true;
}
// 查询数据
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) {
Cursor c = null;
SQLiteDatabase db = mHelper.getReadableDatabase();
String id = null;
SQLiteDatabase db = mHelper.getReadableDatabase(); // 获取可读数据库实例
String id = null; // ID值
switch (mMatcher.match(uri)) {
case URI_NOTE:
case URI_NOTE: // 笔记查询
c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
sortOrder);
break;
case URI_NOTE_ITEM:
case URI_NOTE_ITEM:// 单个笔记查询
id = uri.getPathSegments().get(1);
c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder);
break;
case URI_DATA:
case URI_DATA:// 笔记数据查询
c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
sortOrder);
break;
case URI_DATA_ITEM:
case URI_DATA_ITEM: // 单个笔记数据查询
id = uri.getPathSegments().get(1);
c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder);
break;
case URI_SEARCH:
case URI_SEARCH_SUGGEST:
case URI_SEARCH_SUGGEST:// 搜索和搜索建议查询
if (sortOrder != null || projection != null) {
throw new IllegalArgumentException(
"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
@ -146,16 +150,16 @@ public class NotesProvider extends ContentProvider {
}
return c;
}
// 插入数据
@Override
public Uri insert(Uri uri, ContentValues values) {
SQLiteDatabase db = mHelper.getWritableDatabase();
SQLiteDatabase db = mHelper.getWritableDatabase();// 获取可写数据库实例
long dataId = 0, noteId = 0, insertedId = 0;
switch (mMatcher.match(uri)) {
case URI_NOTE:
case URI_NOTE:// 插入笔记
insertedId = noteId = db.insert(TABLE.NOTE, null, values);
break;
case URI_DATA:
case URI_DATA:// 插入笔记数据
if (values.containsKey(DataColumns.NOTE_ID)) {
noteId = values.getAsLong(DataColumns.NOTE_ID);
} else {
@ -166,33 +170,33 @@ public class NotesProvider extends ContentProvider {
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
// Notify the note uri
// 通知笔记URI
if (noteId > 0) {
getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
}
// Notify the data uri
// 通知笔记数据URI
if (dataId > 0) {
getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
}
return ContentUris.withAppendedId(uri, insertedId);
return ContentUris.withAppendedId(uri, insertedId);// 返回插入数据的URI
}
// 删除数据
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
int count = 0;
String id = null;
SQLiteDatabase db = mHelper.getWritableDatabase();
boolean deleteData = false;
SQLiteDatabase db = mHelper.getWritableDatabase();// 获取可写数据库实例
boolean deleteData = false; // 是否删除数据
switch (mMatcher.match(uri)) {
case URI_NOTE:
case URI_NOTE:// 删除笔记
selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
count = db.delete(TABLE.NOTE, selection, selectionArgs);
break;
case URI_NOTE_ITEM:
case URI_NOTE_ITEM:// 删除单个笔记
id = uri.getPathSegments().get(1);
/**
* ID that smaller than 0 is system folder which is not allowed to

Write Preview
Loading…
Cancel
Save