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文件大小: 2mb
下载次数: 0
上传时间: 2015-07-18
详细说明: package com.JingTing.DBhelperClass; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class DBHelper extends SQLiteOpenHelper { public DBHelper(Context context) { super(context, "data.db", null, 1); } @Override public void onCreate(SQLiteDatabase db) { String createnotestable="create table datas (_id integer primary key autoincrement,ItemName text ,Money float,time datatime)"; db.execSQL(createnotestable); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { db.execSQL("drop table datas if exits"); onCreate(db); } public Cursor ExitsData() { SQLiteDatabase db = getReadableDatabase(); return db.rawQuery("select * from datas",null); } public Cursor SumMoney() { SQLiteDatabase db = getReadableDatabase(); return db.rawQuery("select SUM(Money) as SumAll from datas",null); } public Cursor ExitsIncome() { SQLiteDatabase db = getReadableDatabase(); return db.rawQuery("select * from datas where Money>0",null); } public Cursor SumInCome() { SQLiteDatabase db = getReadableDatabase(); return db.rawQuery("select SUM(Money) as SumInCome from datas where Money>0",null); } public Cursor ExitsExpenditure() { SQLiteDatabase db = getReadableDatabase(); return db.rawQuery("select * from datas where Money<0",null); } public Cursor SumExpenditure() { SQLiteDatabase db = getReadableDatabase(); return db.rawQuery("select SUM(Money) as SumExpenditure from datas where Money<0",null); } public Cursor SelectAllItem() { SQLiteDatabase db = getReadableDatabase(); return db.rawQuery("select * from datas order by time desc",null); } public long insertData(String ItemName,int Money,String time) { SQLiteDatabase DB=getWritableDatabase(); ContentValues values=new ContentValues(); values.put("ItemName", ItemName); values.put("Money", Money); values.put("time", time); return DB.insert("datas", null, values); } } ...展开收缩
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