Department of Information Technology Srilakshmi.Ch Lab Name :Mobile Computing Lab Code:IT6611 Index INDEX Dates for “A” Sec S.No Exercise Page No Date of Experiment Date of Submission Signature of faculty 1 Mobile Application using GUI components, Font and Colours 2 Mobile Application using Layout Managers and event listeners 3 Mobile Native calculator application 4 Mobile Application that draws basic graphical primitives 5 Mobile Application using database 6 Mobile Application using RSS Feed. 7 Mobile Multi threading Application 8 Mobile Application using Native GPS location information 9 Mobile Application that writes data to the SD card 10 Mobile Application that creates alarm clock Exercise : 1 GUI Components, fonts and colors Date: Aim: Develop an application that uses GUI components, Font and Colours. UI Elements (Layouts,Widgets, Text Fielsds ,Containers,Common Attributes) Layouts:  Linear Layout o Horizontal o Vertical  Relative Layout  Table Layout  Grid Layout  Frame Layout Widgets:  TextView  Button  RadioButton  ToggleButton  ImageView  ImageButton  CheckBox  ProgressBar  SeekBar  RatingBar  WebView  Spinner Text Fields  EditText o Plain text, Name, Number, Email etc. Containers  ScrollView o Vertical o Horizontal  ListView  GridView  SearchView  TabHost Common Attributes  Layout Width  Layout Height o match_parent o fill_parent o wrap_content o <> in dp  Gravity o centre o left o right etc.  Style o uses drawable.  background o color or drawable.  id  padding  margin  textColor o color value (Hex,Rgba etc.) o drawable o color resource  textStyle  typeface Changing attributes (text color, background, typeface) TextView <> = (TextView) findViewById(R.id.<>); <>.setTextColor(getResources().getColor(R.color.<>)); <>.setBackgroundColor(getResources().getColor(R.color.<>)); The color resource is defined in a “color.xml” rescource file inside “values”resource directry < resources > < color name="yellow" >#FFFF00 Changing Type Face Create an assets directry. Project  new  folder  assetsfolder Create a new directory “font” Copy the fonts and paste in directory. TextView tF = (TextView) findViewById(R.id. theFont ); Typeface typeface = Typeface. createFromAsset (getAssets(), "font/unica_one_regular.ttf" ); tF.setTypeface(typeface); Code to add 2 numbers L ayout activity_main.xml There are two “Edit Text” Widget to get Number 1 and Number 2 There is one “Text View” Widget to view the result of addition operation There is one “Button” Widget when clicked does addition operation In properties window as shown below To change Color,font and text size  To change the color of the text  In the properties window select the  text color box & type the hexacode of the color.  To change the size of text  In the properties window  select the textSize with 25dp.  To change the font  In the properties window  Select text Style and in its check box choose Bold or Italics DESIGN

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