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package com.example.android.provider02;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;

public class TestProvider extends ContentProvider {
//SQLiteOpenHelper-建立資料庫TaxiCarDB和Table:Users
private static class DatabaseHelper extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "TaxiDB";
private static final int DATABASE_VERSION = 1;
//建立PhoneContentDB資料庫
private DatabaseHelper(Context ctx) {
super(ctx, DATABASE_NAME, null, DATABASE_VERSION);
}
//建立Users表單
@Override
public void onCreate(SQLiteDatabase db) {
String sql = "CREATE TABLE " + UserSchema.TABLE_NAME + " ("
+ UserSchema.ID + " INTEGER primary key autoincrement, "
+ UserSchema.USER_NAME + " text not null, "
+ UserSchema.VENDOR + " text not null, "
+ UserSchema.TELEPHONE + " text not null, "
+ UserSchema.VIP + " text not null, "
+ UserSchema.STATUS + " text not null, "
+ UserSchema.NUMBER + " text not null "+ ");";
db.execSQL(sql);
}
//更新新版本
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS test");
onCreate(db);
}
}
//定義DatabaseHelper類別變數 databaseHelper
static DatabaseHelper databaseHelper;
//實作Content Providers的onCreate()
@Override
public boolean onCreate() {
databaseHelper = new DatabaseHelper(getContext());
return true;
}
public interface UserSchema {
String TABLE_NAME = "Taxi"; //計程車名單資料庫
String ID = "_ID"; //編號

String USER_NAME = "_Name"; //姓名
String VENDOR = "_Vendor"; //計程車業者
String TELEPHONE = "_Phone"; //手機號碼
String VIP = "_vip"; //VIP(是或否)
String STATUS = "_Status"; //狀態(空車或滿車)
String NUMBER = "_Number"; //車號
}
//實作Content Providers的insert()
@Override
public Uri insert(Uri uri, ContentValues values) {
SQLiteDatabase db = databaseHelper.getWritableDatabase();
db.insert(UserSchema.TABLE_NAME, null, values);
db.close();
return null;
}
//實作Content Providers的query()
@Override
public int update(Uri uri, ContentValues values, String selection,
String[] selectionArgs) {
SQLiteDatabase db = databaseHelper.getWritableDatabase();
db.update(UserSchema.TABLE_NAME, values, selection ,null);
db.close();
return 0;
}
//實作Content Providers的delete()
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
SQLiteDatabase db = databaseHelper.getWritableDatabase();
db.delete(UserSchema.TABLE_NAME, selection ,null);
db.close();
return 0;
}
//實作Content Providers的update()
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
SQLiteDatabase db = databaseHelper.getReadableDatabase();
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
qb.setTables(UserSchema.TABLE_NAME);
Cursor c = qb.query(db, projection, selection, selectionArgs, null,
null, null);
return c;
}
//實作Content Providers的getType()
@Override
public String getType(Uri uri) {
// TODO Auto-generated method stub
return null;
}
}