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- import android.content.ContentValues;
- import android.content.Context;
- import android.database.Cursor;
- import android.database.sqlite.SQLiteDatabase;
- import android.database.sqlite.SQLiteOpenHelper;
- public class DatabaseHelper extends SQLiteOpenHelper {
- public static final String DATABASE_NAME = "tasks.db";
- public static final String TABLE_NAME = "task_table";
- public static final String ID_COL = "ID";
- public static final String NAME_COL = "NAME";
- public static final String CATEGORY_COL = "CATEGORY";
- public static final String DURATION_COL = "DURATION";
- public static final String DATETIME_COL = "DATETIME";
- public static final String DESCRIPTION_COL = "DATETIME";
- public DatabaseHelper(Context context) {
- super(context, DATABASE_NAME, null, 1);
- }
- @Override
- public void onCreate(SQLiteDatabase db) {
- String CREATE_TABLE_TASKS = "CREATE TABLE " + TABLE_NAME + "("
- + ID_COL + " INTEGER PRIMARY KEY AUTOINCREMENT ,"
- + NAME_COL + " TEXT, "
- + DATETIME_COL + " TEXT,"
- + DURATION_COL + " INTEGER,"
- + CATEGORY_COL + " TEXT,"
- + DESCRIPTION_COL + " TEXT " + ")";
- db.execSQL(CREATE_TABLE_TASKS);
- }
- @Override
- public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
- db.execSQL("DROP TABLE IF EXISTS "+TABLE_NAME);
- onCreate(db);
- }
- public boolean insertData(Task task) {
- SQLiteDatabase db = this.getWritableDatabase();
- ContentValues contentValues = new ContentValues();
- contentValues.put(NAME_COL,task.getName());
- contentValues.put(CATEGORY_COL,task.getCategory().toString());
- contentValues.put(DATETIME_COL,task.getDateTime());
- contentValues.put(DURATION_COL,task.getDuration());
- contentValues.put(DESCRIPTION_COL,task.getDescription());
- long result = db.insert(TABLE_NAME,null ,contentValues);
- if(result == -1)
- return false;
- else
- return true;
- }
- public Cursor getAllData() {
- SQLiteDatabase db = this.getWritableDatabase();
- Cursor res = db.rawQuery("select * from "+TABLE_NAME,null);
- return res;
- }
- public boolean updateData(String id,Task task) {
- SQLiteDatabase db = this.getWritableDatabase();
- ContentValues contentValues = new ContentValues();
- contentValues.put(ID_COL,id);
- contentValues.put(CATEGORY_COL,task.getCategory().toString());
- contentValues.put(DATETIME_COL,task.getDateTime());
- contentValues.put(DURATION_COL,task.getDuration());
- contentValues.put(DESCRIPTION_COL,task.getDescription());
- db.update(TABLE_NAME, contentValues, "ID = ?",new String[] { id });
- return true;
- }
- public Integer deleteData (String id) {
- SQLiteDatabase db = this.getWritableDatabase();
- return db.delete(TABLE_NAME, "ID = ?",new String[] {id});
- }
- }
- package com.example.tareq.tasks2do;
- import android.content.ClipData;
- import android.content.Intent;
- import android.database.sqlite.SQLiteDatabase;
- import android.os.Bundle;
- import android.support.v7.app.AppCompatActivity;
- import android.view.Menu;
- import android.view.MenuInflater;
- import android.view.MenuItem;
- import android.view.View;
- public class MainActivity extends AppCompatActivity {
- DatabaseHelper data;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- data = new DatabaseHelper(this);
- setContentView(R.layout.activity_main);
- }
- @Override
- public boolean onCreateOptionsMenu(Menu menu){
- getMenuInflater().inflate(R.menu.item,menu);
- Intent intent = new Intent(MainActivity.this, addActivity.class);
- // startActivity(intent);
- return super.onCreateOptionsMenu(menu);
- }
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
- switch (item.getItemId()) {
- case R.id.add:
- Intent intent = new Intent(MainActivity.this,addActivity.class);
- startActivity(intent);
- }
- return super.onOptionsItemSelected(item);
- }
- }
- public DatabaseHelper(Context context) {
- super(context, DATABASE_NAME, null, 1);
- this.getWriteableDatabase();
- }
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