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“Team Leader Android Developer related Frequently Asked Questions by expert members with professional career as Team Leader Android Developer. These list of interview questions and answers will help you strengthen your technical skills, prepare for the new job interview and quickly revise your concepts”



67 Team Leader Android Developer Questions And Answers

41⟩ Please explain what are application Widgets in android?

App Widgets are miniature application views that can embedded in other applications (such as the Home screen) and receive periodic updates. These views has referred to as Widgets in the user interface, and you can publish one with an App Widget provider.

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45⟩ Tell me what is action in Android?

In Android, the action is a description of something that an intent sender desires.

SYNTAX:

CONTAINED IN:

DESCRIPTION:

Adds an action to an intent filter. An element must contain one or more elements. If it doesn’t contain any, no Intent objects will get through the filter.

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49⟩ Explain me the resource that is a compiled visual resource and can be used as a background, title, or in other part of the screen?

Drawable is the virtual resource that can be used as a background, title, or in other parts of the screen. It is compiled into an android.graphics.drawable subclass. A Drawable resource is a general concept for a graphic which can be drawn. The simplest case is a graphical file (bitmap), which would be represented in Android via a BitmapDrawable class.

The Drawable is stored as individual files in one of the res/drawable folders. The ADT project creation wizard creates these folders by default. You would store bitmaps for different resolutions in the -mdpi, -hdpi, -xhdpi, -xxhdpi subfolders of res/drawable If these bitmaps are provided in a different folder, the Android system selects the correct one automatically based on the device configuration.

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51⟩ Tell me what is the APK format?

The Android packaging key is compressed with classes, UI's, supportive assets and manifest.All files are compressed to a single file is called APK.

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59⟩ Explain me what are the different storage methods in Android?

Android offers several different options for data persistence. Shared Preferences – Store private primitive data in key-value pairs. This sometimes gets limited as it offers only key-value pairs. You cannot save your own java types. Internal Storage – Store private data on the device memory.

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60⟩ Explain me how can ANR be prevented?

One technique that prevents the Android system from concluding a code that has been responsive for a long period of time is to create a child thread. Within the child thread, most of the actual tasks of the codes can be placed, so that the main thread runs with minimal periods of unresponsive time.

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