\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{fabiobays}
\pdfinfo{
  /Title (csis-3175-mobile.pdf)
  /Creator (Cheatography)
  /Author (fabiobays)
  /Subject (CSIS 3175 Mobile Cheat Sheet)
}

% Lengths and widths
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\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{CSIS 3175 Mobile Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{fabiobays} via \textcolor{DarkBackground}{\uline{cheatography.com/80431/cs/19381/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}fabiobays \\
  \uline{cheatography.com/fabiobays} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 18th April, 2019.\\
   Updated 18th April, 2019.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Decimal Format}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{DecimalFormat currency = new DecimalFormat("\$\#\#\#,\#\#\#.\#\#");   \newline currency.format(totalCost));} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Pass And Get Value Into/From Another Activity}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Intent i = new Intent(MainActivity.this, \newline                                 SecondActivity.class); \newline                         i.putExtra("data",totalCost); \newline                         startActivity(i); \newline  \newline Intent intent = getIntent(); \newline Double value = itent.getDoubleExtra(Key,0);} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Splash Activity}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public class SplashActivity extends AppCompatActivity \{ \newline     @Override \newline     protected void onCreate(Bundle savedInstanceState) \{ \newline         \seqsplit{super.onCreate(savedInstanceState);} \newline         \seqsplit{setContentView(R.layout.activity\_splash);} \newline         TimerTask task = new TimerTask() \{ \newline             @Override \newline             public void run() \{ \newline                 finish(); \newline                 startActivity(new \seqsplit{Intent(SplashActivity.this}, \newline                         MainActivity.class)); \newline             \} \newline         \}; \newline         Timer t = new Timer(); \newline         t.schedule(task,4000); \newline     \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Working with Files}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{FileOutputStream fout = \newline 		openFileOutput("File1.txt",MODE\_APPEND); \newline fout.write(data.getBytes()); \newline fout.write("\textbackslash{}n".getBytes()); \newline fout.close(); \newline FileInputStream fin = \seqsplit{openFileInput("File1.txt");} \newline String temp = ""; \newline int c; \newline char ch; \newline while((c=fin.read())!=-1)\{ \newline 	ch = (char)c; \newline 	temp += Character.toString(ch); \newline \} \newline output.setText(temp); \newline fin.close();} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Calling DBHelper}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{//to view student records \newline /*Cursor c = dbh.viewData(); \newline StringBuilder str = new StringBuilder(); \newline if(c.getCount()\textgreater{}0)\{ \newline 	while (c.moveToNext())\{ \newline 		str.append("ID : " +c.getString(0)); \newline 		str.append(" First Name : " +c.getString(1)); \newline 		str.append(" Last Name : "+c.getString(2)); \newline 		str.append(" Cell number : "+ c.getString(3)); \newline 		str.append(" prov Id : " + c.getString(4)); \newline 		str.append("\textbackslash{}n"); \newline 	\} \newline 	result.setText(str); \newline  \newline //Create Record \newline  boolean isAdded= \seqsplit{db.addRec(fn.getText().toString()},ln.getText().toString(), \newline                         cn.getText().toString(),pi.getText().toString());} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{New Page}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{} \tn 
% Row Count 0 (+ 0)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Database}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public class DatabaseHelper extends SQLiteOpenHelper\{ \newline final static String DATABASE\_NAME = "Information.db"; \newline final static int DATABASE\_VERSION = 4; \newline  \newline public DatabaseHelper(Context context) \{ \newline 	super(context, DATABASE\_NAME, null, DATABASE\_VERSION); \newline \} \newline  \newline @Override \newline public void onCreate(SQLiteDatabase db) \{ \newline 	//creating student\_table and province\_table \newline 	String query = "Create Table {[}TABLENAME{]} ( {[}COLUMN{]} INTEGER PRIMARY KEY ,COLUMN2 TEXT,...)";  \newline 	//Only INTEGER, TEXT OR REAL \newline 	try\{ \newline 		db.execSQL(query); \newline 	\} \newline 	catch (Exception e)\{ \newline 		e.printStackTrace(); \newline 	\} \newline \} \newline  \newline @Override \newline public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) \{ \newline 	db.execSQL("Drop table if exists " + TABLE1\_NAME); \newline 	db.execSQL("Drop table if exists " + TABLE2\_NAME); \newline 	onCreate(db); \newline \} \newline  \newline //Add Record \newline SQLiteDatabase db = \seqsplit{this.getWritableDatabase();} \newline ContentValues values = new ContentValues(); \newline values.put("Column",value); \newline long r = db.insert(TABLE1\_NAME,null,values); \newline if(r == -1)\{ \newline 	return  false; \newline \} \newline else\{ \newline 	return true; \newline \} \newline  \newline //method to view data \newline public Cursor viewData()\{ \newline 	SQLiteDatabase db = \seqsplit{this.getWritableDatabase();} \newline 	String query = "Select * from " + TABLE1\_NAME; \newline 	Cursor c = db.rawQuery(query,null); \newline 	return c; \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Play Media}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{mpG = new MediaPlayer(); \newline mpG = MediaPlayer.create(this,R.raw.ukulele); \newline mpD = new MediaPlayer(); \newline mpD = MediaPlayer.create(this,R.raw.drums); \newline mpG.start(); \newline mpG.pauset();} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Shared Prefs}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{final SharedPreferences sharedPref = \newline                 \seqsplit{PreferenceManager.getDefaultSharedPreferences} \newline                         (this); \newline  \newline button.setOnClickListener(new View.OnClickListener() \{ \newline             @Override \newline             public void onClick(View v) \{ \newline                 intYear = \seqsplit{Integer.parseInt(years.getText().toString());} \newline                 decLoan = \seqsplit{Float.parseFloat(loan.getText().toString());} \newline                 decInterest = \seqsplit{Float.parseFloat(interest.getText().toString());} \newline                 SharedPreferences.Editor editor = sharedPref.edit(); \newline                 editor.putInt("key1",intYear); \newline                 editor.putFloat("key2",decLoan); \newline                 editor.putFloat("key3",decInterest); \newline                 editor.commit(); \newline                 startActivity(new Intent \newline                         (MainActivity.this,Payment.class)); \newline             \} \newline         \}); \newline  \newline  \newline //Get the values \newline SharedPreferences sp = PreferenceManager. \newline                 \seqsplit{getDefaultSharedPreferences(this);} \newline  \newline  int years = sp.getInt("key1",0); \newline  float loan = sp.getFloat("key2",0); \newline float interest = sp.getFloat("key3",0);} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Working With Fragments}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public class FragmentOne extends Fragment \{ \newline     @Override \newline     public View \seqsplit{onCreateView(LayoutInflater} inflater, ViewGroup container, \newline                              Bundle savedInstanceState) \{ \newline         // Inflate the layout for this fragment \newline         return \seqsplit{inflater.inflate(R.layout.fragment\_fragment\_one}, container, false); \newline     \} \newline //Main \newline public void clickOne(View view)\{ \newline         FragmentManager fm = \seqsplit{getSupportFragmentManager();} \newline         FragmentTransaction ft = fm.beginTransaction(); \newline         FragmentOne f1 = new FragmentOne(); \newline         ft.add(R.id.rlFrag1,f1); \newline         ft.commit(); \newline     \} \newline //Add this to the layout \newline android:onClick="clickOne" \newline //Dont forget to change fragment layout to relative} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}