81 lines
2.2 KiB
Java
81 lines
2.2 KiB
Java
package com.hty.browser;
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import java.io.File;
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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public class DBHelper extends SQLiteOpenHelper {
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public static final String DATABASE_NAME = MainActivity.dir + File.separator + "webfav.db";
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private final static int VERSION = 1;
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String TableName = "webfav";
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private SQLiteDatabase db;
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private static DBHelper mInstance = null;
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public DBHelper(Context context) {
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super(context, DATABASE_NAME, null, VERSION);
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}
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public static synchronized DBHelper getInstance(Context context) {
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if (mInstance == null) {
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mInstance = new DBHelper(context);
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}
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return mInstance;
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}
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@Override
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public void onCreate(SQLiteDatabase db) {
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this.db = db;
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db.execSQL("CREATE TABLE webfav (_id INTEGER PRIMARY KEY ,website TEXT,title TEXT)");
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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// db.execSQL("DROP TABLE IF EXISTS battery");
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// onCreate(db);
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switch (newVersion) {
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case 6:
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db.execSQL("alter table battery rename to battery_temp");
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db.execSQL("CREATE TABLE battery (_id INTEGER PRIMARY KEY ,time TEXT,level INTEGER, voltage INTEGER, current INTEGER , temperature INTEGER, cpu INTEGER)");
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db.execSQL("insert into battery select *,'' from battery_temp");
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db.execSQL("drop table battery_temp");
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break;
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}
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}
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public void insert(ContentValues values) {
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db = getWritableDatabase();
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db.insert(TableName, null, values);
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db.close();
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}
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public Cursor query(String url) {
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db = getWritableDatabase();
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Cursor c = null;
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if (url.equalsIgnoreCase("")) {
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c = db.query(TableName, null, null, null, null, null, "_id desc");
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} else {
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c = db.query(TableName, null, "website=?", new String[] { url }, null, null, "_id desc");
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}
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return c;
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}
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public void del(int id) {
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if (db == null)
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db = getWritableDatabase();
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db.delete(TableName, "_id=?", new String[] { String.valueOf(id) });
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// Log.e("id", id + "");
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// db.ExecuteNonQuery(CommandType.Text, "VACUUM");
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}
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@Override
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public void close() {
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if (db != null)
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db.close();
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}
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}
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