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  • 第一阶段冲刺2

     做了一个标签栏:

    package com.example.zbytexttwo;

     

    import android.content.Context;

    import android.database.sqlite.SQLiteDatabase;

    import android.database.sqlite.SQLiteDatabase.CursorFactory;

    import android.database.sqlite.SQLiteOpenHelper;

    public class dbHelper extends SQLiteOpenHelper {

        public static final String TB_NAME = "bills";

        public dbHelper(Context context, String name, CursorFactory factory, int version) {

            super(context, name, factory, version);

            // TODO Auto-generated constructor stub    }

        @Override

        public void onCreate(SQLiteDatabase db) {

            // TODO Auto-generated method stub

            db.execSQL("CREATE TABLE IF NOT EXISTS " +

                    TB_NAME + " ( _id integer primary key autoincrement," +

                    "leixing varchar," +

                    "riqi varchar,"+

                    "jine integer," +

                    "beizhu varchar"+

                    ") ");

        }

        @Override

        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

            // TODO Auto-generated method stub

            db.execSQL("DROP TABLE IF EXISTS " + TB_NAME);

            onCreate(db);

        }

    }

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  • 原文地址:https://www.cnblogs.com/zaixiachengxuyuan/p/13111120.html
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