Android Coding Standered

Android Coding Standered

• 1.
  Architecture/Coding Standard For Android Projects
• 2.
  Variable Naming convention 1.Non-public, non-static field names start with m. a. private int mPrivate; 2. Static field names start with s. a. private static MyClass sSingleton; 3. Other fields start with a lower case letter. a. int mPackagePrivate;
• 3.
  Xml / sourcenaming 1. In XML - sepration by underscore a. Resources file names are written in lowercase_underscore. b. user_name 2. In Source - userName or mUserName
• 4.
  Drawable Files Icon ic_ ic_star.png Menu menu menu_submenu Notification notification_bg
• 5.
  Layout file name Activity UserProfileActivity activity_user_profile.xml Fragment SignUpFragment fragment_sign_up
• 6.
  Import Bed import foo.*; Good import foo.Bar;
• 7.
  Class/Package naming Class Start withcapital latter and camel case For classes that extend an Android component, the name of the class should end with the name of the component; ShippereApplication SignInActivity, SignInFragment, ImageUploaderService, ChangePasswordDialog. Package name
• 8.
  Limit Veriable scope Private Protective Public
• 9.
  Don’t ignore exception GOOD- Coding void setServerPort(String value) { try { serverPort = Integer.parseInt(value); } catch (NumberFormatException e) { } } BED - Coding try { someComplicatedSecurityFunction(); // may throw SecurityException // phew, made it all the way } catch (Exception e) { // I'll just catch all exceptions handleError(); // with one generic handler! }
• 10.
  Indentation 4 Space forBlock if (x == 1) { x++; } 8 for line wrap Instrument i = someLongExpression(that, wouldNotFit, on, one, line);
• 11.
  Constants SharedPreference PREF_ Arguments ARGUMENT_ Extra EXTRA_ static final StringPREF_EMAIL = "PREF_EMAIL";
• 12.
  XMl Style Rule GOOD <TextView android:id="@+id/text_view_profile" android:layout_width="wrap_content" android:layout_height="wrap_content" /> BAD <TextView android:id="@+id/text_view_profile" android:layout_width="wrap_content" android:layout_height="wrap_content"> </TextView>
• 13.
  String.xml error_ msg_ menu_ action_ title_ nav_
• 14.
  Attribute Order Id Style Height /width Other layout attributes, sorted alphabetically
• 15.
  Thank you!! Contact Me RavishankarAhirwar - Android Developer Email : ravishankar.ahirwar@gmail.com