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DatabaseOpenHelper.java
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DatabaseOpenHelper.java
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package com.example.adi18.blood;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.Build;
import android.widget.Toast;
import com.readystatesoftware.sqliteasset.SQLiteAssetHelper;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
public class DatabaseOpenHelper extends SQLiteOpenHelper {
private static final String DATABASE_NAME="bloodbank";
private static final int DATABASE_VERSION=1;
private static String DB_PATH="C:\\Users\\adi18\\eclipse-workspace\\somya\\app\\src\\Blood\\app\\src\\main\\assets";
private SQLiteDatabase mDatabase;
private Context context;
public DatabaseOpenHelper(Context con)
{
super(con,DATABASE_NAME,null,DATABASE_VERSION);
/* if(Build.VERSION.SDK_INT >=17)
DB_PATH=con.getApplicationInfo().dataDir+"/databases/";
else
DB_PATH="/data/data/"+con.getPackageName()+"/databases/";*/
context=con;
}
public synchronized void close()
{
if(mDatabase!=null)
mDatabase.close();
super.close();
}
public boolean checkDatabase()
{
SQLiteDatabase temp=null;
try
{
String path=DB_PATH+DATABASE_NAME;
temp=SQLiteDatabase.openDatabase(path,null,SQLiteDatabase.OPEN_READONLY);
}
catch(SQLiteException e){
}
if(temp!=null)
temp.close();
return temp!=null?true:false;
}
public void copyDatabase()
{
try {
InputStream myInput=context.getAssets().open(DATABASE_NAME);
String outputFileName=DB_PATH+DATABASE_NAME;
OutputStream output= new FileOutputStream(outputFileName);
byte[] buffer=new byte[1024];
int length;
while((length=myInput.read(buffer))>0){
output.write(buffer,0,length);
}
output.flush();
output.close();
myInput.close();
}
catch(IOException e){
e.printStackTrace();
}}
public void openDatabase()
{
String path=DB_PATH+DATABASE_NAME;
mDatabase=SQLiteDatabase.openDatabase(path,null,SQLiteDatabase.OPEN_READONLY);
}
public void createDatabase()
{
boolean check=checkDatabase();
if(check)
{
}
else
{
this.getReadableDatabase();
try{
copyDatabase();
}
catch(Exception e){
throw new Error("Error copying database");
}
}
}
public List<Account>getuser(){
List<Account>tem=new ArrayList<Account>();
SQLiteDatabase d=this.getWritableDatabase();
Cursor c;
try{
c=d.rawQuery("SELECT * FROM "+DATABASE_NAME,null);
if(c==null)
return null;
c.moveToFirst();
do{
Account account=new Account(c.getInt(c.getColumnIndex("SNo")),c.getString(c.getColumnIndex("Name")),c.getString(c.getColumnIndex("City")),c.getString(c.getColumnIndex("Area")));
tem.add(account);
}while(c.moveToNext());
c.close();
}
catch(Exception e){
}
d.close();
return tem;
}
@Override
public void onCreate(SQLiteDatabase db) {
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}