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Diff for: ‎.gitignore

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*.iml
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.gradle
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/local.properties
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/.idea/workspace.xml
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/.idea/libraries
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.DS_Store
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/build
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/captures
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.externalNativeBuild

Diff for: ‎.idea/gradle.xml

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Diff for: ‎.idea/misc.xml

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Diff for: ‎.idea/modules.xml

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Diff for: ‎.idea/runConfigurations.xml

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Diff for: ‎.idea/terminal.xml

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Diff for: ‎.idea/vcs.xml

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Diff for: ‎app/.gitignore

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/build

Diff for: ‎app/build.gradle

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apply plugin: 'com.android.application'
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android {
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compileSdkVersion 26
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defaultConfig {
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applicationId "com.example.laksh.sqlapp"
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minSdkVersion 19
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targetSdkVersion 26
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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}
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dependencies {
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implementation fileTree(dir: 'libs', include: ['*.jar'])
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implementation 'com.android.support:appcompat-v7:26.1.0'
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implementation 'com.android.support.constraint:constraint-layout:1.1.0'
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testImplementation 'junit:junit:4.12'
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androidTestImplementation 'com.android.support.test:runner:1.0.2'
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androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
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}

Diff for: ‎app/proguard-rules.pro

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# Add project specific ProGuard rules here.
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# You can control the set of applied configuration files using the
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# proguardFiles setting in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}
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# Uncomment this to preserve the line number information for
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# debugging stack traces.
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#-keepattributes SourceFile,LineNumberTable
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# If you keep the line number information, uncomment this to
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# hide the original source file name.
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#-renamesourcefileattribute SourceFile

Diff for: ‎app/src/androidTest/java/com/example/laksh/sqlapp/ExampleInstrumentedTest.java

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package com.example.laksh.sqlapp;
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import android.content.Context;
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import android.support.test.InstrumentationRegistry;
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import android.support.test.runner.AndroidJUnit4;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static org.junit.Assert.*;
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/**
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* Instrumented test, which will execute on an Android device.
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*
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* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
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*/
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@RunWith(AndroidJUnit4.class)
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public class ExampleInstrumentedTest {
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@Test
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public void useAppContext() throws Exception {
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// Context of the app under test.
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Context appContext = InstrumentationRegistry.getTargetContext();
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assertEquals( "com.example.laksh.sqlapp", appContext.getPackageName() );
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}
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}

Diff for: ‎app/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.laksh.sqlapp">
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/AppTheme">
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<activity android:name=".MainActivity">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<provider
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android:authorities="com.example.laksh.sqlapp"
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android:name="com.example.laksh.sqlapp.DBContentProvider"/>
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</application>
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</manifest>

Diff for: ‎app/src/main/java/com/example/laksh/sqlapp/DatabaseHelper.java

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package com.example.laksh.sqlapp;
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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/**
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* Created by laksh on 6/5/2018.
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*/
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public class DatabaseHelper extends SQLiteOpenHelper {
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//Initialize all the fields needed for database
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public static final String DATABASE_NAME = "Students.db";
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public static final String TABLE_NAME = "student_data";
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public static final String COL_1 = "ID";
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public static final String COL_2 = "Name";
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public static final String COL_3 = "Surname";
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public static final String COL_4 = "Marks";
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public static final String COL_5 = "Date";
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public static final String LBR = "(";
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public static final String RBR = ")";
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public static final String COM = ",";
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//Just pass context of the app to make it simpler
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public DatabaseHelper(Context context) {
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super( context, DATABASE_NAME, null, 2 );
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}
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@Override
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public void onCreate(SQLiteDatabase db) {
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//Creating table
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db.execSQL( "create table " + TABLE_NAME + LBR + COL_1 + " INTEGER PRIMARY KEY AUTOINCREMENT" + COM +
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COL_2 + " TEXT" + COM + COL_3 + " TEXT" + COM + COL_4 + " INTEGER" + COM + COL_5 + " INTEGER" +RBR );
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// Another way of writing the CREATE TABLE query
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/* db.execSQL( "create table student_data (ID INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT, Surname TEXT," +
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"Marks INTEGER, Date TEXT)" );*/
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int i, int i1) {
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//Dropping old table
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db.execSQL( "DROP TABLE IF EXISTS " + TABLE_NAME);
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onCreate( db );
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}
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//Insert data in database
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public boolean instertData(String name, String surname, String marks, String date){
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//Get the instance of SQL Database which we have created
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SQLiteDatabase db = getWritableDatabase();
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//To pass all the values in database
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ContentValues contentValues = new ContentValues();
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contentValues.put( COL_2, name );
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contentValues.put( COL_3, surname );
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contentValues.put( COL_4, marks );
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contentValues.put( COL_5, date);
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long result = db.insert( TABLE_NAME, null, contentValues );
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if(result == -1)
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return false;
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else
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return true;
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}
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//Cursor class is used to move around in the database
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public Cursor getData(){
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//Get the data from database
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SQLiteDatabase db = getWritableDatabase();
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Cursor res = db.rawQuery( "select * from " + TABLE_NAME, null );
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return res;
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}
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//Update fields of database using ID (Unique identifier)
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public boolean updateData(String id, String name, String surname, String marks, String date){
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SQLiteDatabase db = getWritableDatabase();
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ContentValues contentValues = new ContentValues( );
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// When you want to update only name field
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if(surname.equals( "" ) && marks.equals( "" )){
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contentValues.put( COL_1, id );
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contentValues.put( COL_2, name );
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contentValues.put( COL_5, date);
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}
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// When you want to update only surname field
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if(name.equals( "" ) && marks.equals( "" )){
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contentValues.put( COL_1, id );
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contentValues.put( COL_3, surname );
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contentValues.put( COL_5, date);
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}
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// When you want to update only marks field
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if(name.equals( "" ) && surname.equals( "" )){
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contentValues.put( COL_1, id );
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contentValues.put( COL_4, marks );
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contentValues.put( COL_5, date);
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}
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// When you want to update name and surname field
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if(marks.equals( "" ) && !name.isEmpty() && !surname.isEmpty()){
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contentValues.put( COL_1, id );
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contentValues.put( COL_2, name );
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contentValues.put( COL_3, surname );
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contentValues.put( COL_5, date);
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}
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// When you want to update marks and surname field
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if(name.isEmpty() && !marks.isEmpty() && !surname.isEmpty()){
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contentValues.put( COL_1, id );
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contentValues.put( COL_3, surname );
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contentValues.put( COL_4, marks );
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contentValues.put( COL_5, date);
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}
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// When you want to update name and marks field
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if(surname.isEmpty() && !name.isEmpty() && !marks.isEmpty()){
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contentValues.put( COL_1, id );
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contentValues.put( COL_2, name );
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contentValues.put( COL_4, marks );
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contentValues.put( COL_5, date);
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}
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// When you want to update every data field
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if(!id.isEmpty() && !name.isEmpty() && !surname.isEmpty() && !marks.isEmpty()){
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contentValues.put( COL_1, id );
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contentValues.put( COL_2, name );
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contentValues.put( COL_3, surname );
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contentValues.put( COL_4, marks );
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contentValues.put( COL_5, date);
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}
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// UPDATE query
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db.update( TABLE_NAME, contentValues, "ID = ?", new String[]{id} );
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return true;
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}
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//Delete data from the databse using ID (Primary Key)
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public Integer deleteData(String id){
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SQLiteDatabase db = getWritableDatabase();
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return db.delete( TABLE_NAME, "ID = ?", new String [] {id} );
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}
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}

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