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收藏夹增加分类

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sonichy
2023-02-22 19:50:16 +08:00
parent 566e7030c0
commit fb386af64f
9 changed files with 179 additions and 40 deletions
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40
main/java/com/hty/browser/DBHelper.java
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@@ -11,7 +11,7 @@ import android.database.sqlite.SQLiteOpenHelper;
public class DBHelper extends SQLiteOpenHelper {
public static final String filename = "webfav.db";
public static final String DATABASE_NAME = MainActivity.dir + File.separator + filename;
private final static int VERSION = 1;
private final static int VERSION = 3;
static String TableName = "webfav";
private SQLiteDatabase db;
private static DBHelper mInstance = null;
@@ -30,28 +30,30 @@ public class DBHelper extends SQLiteOpenHelper {
@Override
public void onCreate(SQLiteDatabase db) {
this.db = db;
db.execSQL("CREATE TABLE webfav (_id INTEGER PRIMARY KEY , website TEXT, title TEXT)");
db.execSQL("CREATE TABLE webfav (_id INTEGER PRIMARY KEY , website TEXT, title TEXT, category TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// db.execSQL("DROP TABLE IF EXISTS battery");
// onCreate(db);
switch (newVersion) {
case 6:
case 3:
String sql = "CREATE TABLE category (_id INTEGER PRIMARY KEY , category TEXT)";
db.execSQL(sql);
sql = "ALTER TABLE " + TableName + " ADD COLUMN category TEXT default ''";
db.execSQL(sql);
break;
}
}
public void insert(ContentValues values) {
public void insert(String tableName, ContentValues values) {
db = getWritableDatabase();
db.insert(TableName, null, values);
db.insert(tableName, null, values);
db.close();
}
public Cursor query(String s) {
db = getWritableDatabase();
Cursor c = null;
Cursor c;
if (s.equals("")) {
c = db.query(TableName, null, null, null, null, null, "_id desc");
} else {
@@ -60,6 +62,28 @@ public class DBHelper extends SQLiteOpenHelper {
return c;
}
public Cursor queryCategoty(String s) {
db = getWritableDatabase();
Cursor c;
if (s.equals("无分类")) {
c = db.query(TableName, null, "category = ''", null, null, null, "_id desc");
} else {
c = db.query(TableName, null, "category = '" + s + "'", null, null, null, "_id desc");
}
return c;
}
public Cursor category(String s) {
db = getWritableDatabase();
Cursor c;
if (s.equals("")) {
c = db.query("category", null, null, null, null, null, "category asc");
} else {
c = db.query("category", null, "category = '" + s + "'", null, null, null, null);
}
return c;
}
public void del(int id) {
if (db == null)
db = getWritableDatabase();