i want to retrieve data from the sqlite database from clicking the button OK then I want it to display in a TextView in other activity, like this image output
If possible, can anyone please help me with the code what have I done wrong?
database name certificate with structure
_id integer primary key
certificate_no text
product_name text
company text
valid_from text
valid_to text
DatabaseHelper.java
package com.mjusuf.halal;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
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;
public class DatabaseHelper extends SQLiteOpenHelper{
//The Android's default system path of your application database.
private static String DB_PATH = "/data/data/mjusuf/databases/";
private static String DB_NAME = "certificate";
private SQLiteDatabase myDataBase;
private final Context myContext;
/**
* Constructor
* Takes and keeps a reference of the passed context in order to access to the application assets and resources.
* @param context
*/
public DatabaseHelper(Context context) {
super(context, DB_NAME, null, 1);
this.myContext = context;
}
/**
* Creates a empty database on the system and rewrites it with your own database.
* */
public void createDataBase() throws IOException{
boolean dbExist = checkDataBase();
if(dbExist){
//do nothing - database already exist
}else{
//By calling this method and empty database will be created into the default system path
//of your application so we are gonna be able to overwrite that database with our database.
this.getReadableDatabase();
try {
copyDataBase();
} catch (IOException e) {
throw new Error("Error copying database");
}
}
}
/**
* Check if the database already exist to avoid re-copying the file each time you open the application.
* @return true if it exists, false if it doesn't
*/
private boolean checkDataBase(){
SQLiteDatabase checkDB = null;
try{
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
}catch(SQLiteException e){
//database does't exist yet.
}
if(checkDB != null){
checkDB.close();
}
return checkDB != null ? true : false;
}
/**
* Copies your database from your local assets-folder to the just created empty database in the
* system folder, from where it can be accessed and handled.
* This is done by transfering bytestream.
* */
private void copyDataBase() throws IOException{
//Open your local db as the input stream
InputStream myInput = myContext.getAssets().open(DB_NAME);
// Path to the just created empty db
String outFileName = DB_PATH + DB_NAME;
//Open the empty db as the output stream
OutputStream myOutput = new FileOutputStream(outFileName);
//transfer bytes from the inputfile to the outputfile
byte[] buffer = new byte[1024];
int length;
while ((length = myInput.read(buffer))>0){
myOutput.write(buffer, 0, length);
}
//Close the streams
myOutput.flush();
myOutput.close();
myInput.close();
}
public String[] getCertificateDetail() {
final String TABLE_NAME = "certificate";
String selectQuery = "SELECT * FROM " + TABLE_NAME;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
String[] data = null;
if (cursor.moveToFirst()) {
do {
// get the data into array, or class variable
} while (cursor.moveToNext());
}
cursor.close();
return data;
}
public void openDataBase() throws SQLException{
//Open the database
String myPath = DB_PATH + DB_NAME;
myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
}
@Override
public synchronized void close() {
if(myDataBase != null)
myDataBase.close();
super.close();
}
@Override
public void onCreate(SQLiteDatabase db) {
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
// Add your public helper methods to access and get content from the database.
// You could return cursors by doing "return myDataBase.query(....)" so it'd be easy
// to you to create adapters for your views.
}
Manual.java
package com.mjusuf.halal;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.ImageButton;
public class Manual extends ActionBarActivity {
EditText manual = (EditText) findViewById(R.id.form_manual);
ImageButton reset = (ImageButton) findViewById(R.id.btn_reset);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_manual);
String input = manual.getText().toString();
reset.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
manual.setText("");
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.manual, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_manual.xml
<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<EditText
android:id="@+id/form_manual"
android:layout_width="300dp"
android:layout_height="50dp"
android:layout_marginTop="150dp"
android:layout_centerHorizontal="true"
android:textSize="24sp"
android:gravity="center"
android:background="@drawable/form_manual"
android:ems="10"
android:inputType="number" >
<requestFocus />
</EditText>
<ImageButton
android:id="@+id/btn_ok"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_marginLeft="30dp"
android:layout_marginTop="50dp"
android:layout_alignLeft="@+id/form_manual"
android:layout_below="@+id/form_manual"
android:background="@drawable/button_ok" />
<ImageButton
android:id="@+id/btn_reset"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_marginRight="30dp"
android:layout_marginTop="50dp"
android:layout_alignRight="@+id/form_manual"
android:layout_below="@+id/form_manual"
android:background="@drawable/button_reset" />
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/form_manual"
android:layout_alignLeft="@+id/form_manual"
android:layout_marginBottom="50dp"
android:text="Certificate Number"
android:textAppearance="?android:attr/textAppearanceMedium" />
</RelativeLayout>
OutputSuccess.java
package com.mjusuf.halal;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
public class OutputSuccess extends ActionBarActivity {
TextView certificate_no = (TextView) findViewById(R.id.textView3);
TextView valid_from = (TextView) findViewById(R.id.textView6);
TextView valid_to = (TextView) findViewById(R.id.textView9);
TextView company = (TextView) findViewById(R.id.textView12);
TextView product_name = (TextView) findViewById(R.id.textView15);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_outputsuccess);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.output_success, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_outputsuccess.xml
<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
xmlns:tools="http://ift.tt/LrGmb4"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.mjusuf.halal.OutputSuccess" >
<TextView
android:id="@+id/textView16"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/tableLayout1"
android:layout_alignLeft="@+id/tableLayout1"
android:text="Certificate Information"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TableLayout
android:id="@+id/tableLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/cell_shape" >
<TableRow
android:id="@+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:padding="5dp"
android:text="Certificate Number" />
<TextView
android:id="@+id/textView2"
android:text=":" />
<TextView
android:id="@+id/textView3"
android:padding="5dp"
android:text="1234567890" />
</TableRow>
<TableRow
android:id="@+id/tableRow2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView4"
android:padding="5dp"
android:text="Valid From" />
<TextView
android:id="@+id/textView5"
android:text=":" />
<TextView
android:id="@+id/textView6"
android:padding="5dp"
android:text="2016-01-01" />
</TableRow>
<TableRow
android:id="@+id/tableRow3"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView7"
android:padding="5dp"
android:text="Valid To" />
<TextView
android:id="@+id/textView8"
android:text=":" />
<TextView
android:id="@+id/textView9"
android:padding="5dp"
android:text="2018-01-01" />
</TableRow>
<TableRow
android:id="@+id/tableRow4"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView10"
android:padding="5dp"
android:text="Company" />
<TextView
android:id="@+id/textView11"
android:text=":" />
<TextView
android:id="@+id/textView12"
android:padding="5dp"
android:text="Internation Inch" />
</TableRow>
<TableRow
android:id="@+id/tableRow5"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView13"
android:padding="5dp"
android:text="Product Name" />
<TextView
android:id="@+id/textView14"
android:text=":" />
<TextView
android:id="@+id/textView15"
android:padding="5dp"
android:text="Noodle" />
</TableRow>
</TableLayout>
</RelativeLayout>
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