It is present in bin directory of project.

Following are the methods provided by AsyncTask: doInBackground(), onPreExecute(),onPostExecute(), onProgressUpdate(), isCancelled(). There is no method called doInFront() provided by AsyncTask.

A toast provides a simple popup.

Images to be used in android projects should be stored in drawable folder of res directory.

AndroidManifest.xml present in res folder is used to modify the application permissions, activities and intent fillters.

Extras is a bundle of additional information which can be used to provide extended information to the component. 

The res directory has subfolders - values, layout and drawable.

The bin directory has res, classes and dexedLibs.

The android.widget.ImageView package has to be imported for displaying images. 

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Manifest.xml file should contain the following code: <uses-permission android:name="android.permission.CAMERA" /> <uses-feature android:name="android.hardware.CAMERA" />

The file R.java is an auto-generated file that is added to your application by the android plugin.

Intent is an object used for runtime binding.

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Android virtual devices (or AVD for short) defines a particular device’s software version and hardware format to run user designed application in.