Logo F2FInterview

Android Interview Questions

Q   |   QA
‹‹ previous12345678910 ... 1516

Android is a stack of software for mobile devices which has Operating System, middleware and some key applications. The application executes within its own process and its own instance of Dalvik Virtual Machine. Many Virtual Machines run efficiently by a DVM device. DVM executes Java language?s byte code which later transforms into .dex format files.

The following are the advantages of Android:

  • The customer will be benefited from wide range of mobile applications to choose, since the monopoly of wireless carriers like AT&T and Orange will be broken by Google Android.
  • Features like weather details, live RSS feeds, opening screen, icon on the opening screen can be customized
  • Innovative products like the location-aware services, location of a nearby convenience store etc., are some of the additive facilities in Android.
  • Components can be reused and replaced by the application framework.
  • Optimized DVM for mobile devices
  • SQLite enables to store the data in a structured manner.
  • Supports GSM telephone and Bluetooth, WiFi, 3G and EDGE technologies
  • The development is a combination of a device emulator, debugging tools, memory profiling and plug-in for Eclipse IDE.

  • Application framework enabling reuse and replacement of components
  • Dalvik virtual machine optimized for mobile devices
  • Integrated browser based on the open source WebKit engine
  • Optimized graphics powered by a custom 2D graphics library; 3D graphics based on the OpenGL ES 1.0 specification (hardware acceleration optional)
  • SQLite for structured data storage
  • Media support for common audio, video, and still image formats (MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, GIF)
  • GSM Telephony (hardware dependent)
  • Bluetooth, EDGE, 3G, and WiFi (hardware dependent)
  • Camera, GPS, compass, and accelerometer (hardware dependent)
  • Rich development environment including a device emulator, tools for debugging, memory and performance profiling, and a plugin for the Eclipse IDE.

The following are the exceptions that are supported by Android

  • InflateException : When an error conditions are occurred, this exception is thrown
  • Surface.OutOfResourceException: When a surface is not created or resized, this exception is thrown
  • SurfaceHolder.BadSurfaceTypeException: This exception is thrown from the lockCanvas() method, when invoked on a Surface whose is SURFACE_TYPE_PUSH_BUFFERS
  • WindowManager.BadTokenException: This exception is thrown at the time of trying to add view an invalid WindowManager.LayoutParamstoken.

The APK file is compressed the AndroidManifest.xml file, application code (.dex files), resource files, and other files. A project is compiled into a single .apk file.

‹‹ previous12345678910 ... 1516

In order to link this F2FInterview's page as Reference on your website or Blog, click on below text area and pres (CTRL-C) to copy the code in clipboard or right click then copy the following lines after that paste into your website or Blog.

Get Reference Link To This Page: (copy below code by (CTRL-C) and paste into your website or Blog)
HTML Rendering of above code: