1. Added new method for altering table.

Author: amitjangid80

.idea/caches/build_file_checksums.ser

@@ -15,8 +15,8 @@ android {
     defaultConfig {
         minSdkVersion 19
         targetSdkVersion 28
-        versionCode 36 // this indicates the number of releases of library
-        versionName "1.4.0" // this indicates the current version of library
+        versionCode 42 // this indicates the number of releases of library
+        versionName "1.6.3" // this indicates the current version of library
     }
 
     buildTypes {

app/build.gradle

@@ -992,6 +992,59 @@ public DBHelper createTable(String tableName)
 
         return this;
     }
+    
+    //#region COMMENTS FOR alterTable method
+    /**
+     * 2019 April 15 - Monday - 01:13 PM
+     * alter table method
+     *
+     * @param tableName - name of the table where column is to be added
+     *
+     * this method will alter the table and will add new column to the table
+    **/
+    //#endregion COMMENTS FOR alterTable method
+    public DBHelper alterTable(String tableName)
+    {
+        try
+        {
+            if (dbColumnArrayList == null || dbColumnArrayList.size() == 0)
+            {
+                Log.e(TAG, "alterTable: No Db Columns were provided.");
+                return this;
+            }
+            
+            for (int i = 0; i < dbColumnArrayList.size(); i++)
+            {
+                String columnName = dbColumnArrayList.get(i).columnName;
+                String columnDataType = dbColumnArrayList.get(i).columnDataType;
+                
+                String query = "SELECT COUNT(*) FROM pragma_table_info('" + tableName + "') " +
+                        "WHERE name = '" + columnName + "'";
+                
+                int count = db.getRecordCount(query);
+                
+                if (count == 0)
+                {
+                    query = "ALTER TABLE " + tableName + " ADD COLUMN " + columnName + " " + columnDataType;
+                    Log.e(TAG, "alterTable: query for adding new column or altering table is: " + query);
+                    db.getWritableDatabase().execSQL(query);
+                }
+                else
+                {
+                    Log.e(TAG, "alterTable: " + columnName + " already exists in " + tableName);
+                }
+            }
+            
+            return this;
+        }
+        catch (Exception e)
+        {
+            Log.e(TAG, "alterTable: exception while altering table:\n");
+            e.printStackTrace();
+            
+            return null;
+        }
+    }
 
     //#region COMMENTS FOR insertData method
     /**

app/src/main/java/com/amit/db/DBHelper.java

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlinVersion = '1.3.21'
+    ext.kotlinVersion = '1.3.30'
     ext.supportLibraryVersion = '28.0.0'
 
     repositories {
@@ -10,7 +10,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.1'
+        classpath 'com.android.tools.build:gradle:3.3.2'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"