Q 9 – Is it mandatory to call onCreate() and onStart() in android? It is not mandatory, the program will work perfectly without fail, but the programmer has to implement the life cycle of activity.
Is it possible activity without UI in Android Mcq?
Explanation. Generally, every activity is having its UI(Layout). But if a developer wants to create an activity without UI, he can do it.
Which permissions are required to get a location in Android Mcq?
To get a location of a phone, ACCESS_FINE and ACCESS_COARSE permission in manifest file are required. Without these permissions, we can’t get the location of a mobile. Q 6 – What is a base adapter in android? D – None of the above.
Why we use onCreate method in Android?
onCreate(Bundle savedInstanceState) Function in Android:
Basically Bundle class is used to stored the data of activity whenever above condition occur in app. onCreate() is not required for apps. But the reason it is used in app is because that method is the best place to put initialization code.
What are return types of Startactivityforresult () in Android Mcq?
Options 1) RESULT_OK 2) RESULT_CANCEL 3) RESULT_CRASH 4) A & B.
What are the main components in Android Mcq?
Explanation: There are four main components that can be used within an Android application : Activities, Services, Broadcast Receivers and Content Providers. 2.
What is an interface in Android Mcq?
Interface is a class. Interface acts as a bridge between class and the outside world.
What is last known location in Android?
Using the Google Play services location APIs, your app can request the last known location of the user’s device. In most cases, you are interested in the user’s current location, which is usually equivalent to the last known location of the device.
What is the time limit of broadcast receiver in android?
As a general rule, broadcast receivers are allowed to run for up to 10 seconds before they system will consider them non-responsive and ANR the app.
Which permissions are required to get a location in Android?
If your app needs to access the user’s location, you must request permission by adding the relevant Android location permission to your app. Android offers two location permissions: ACCESS_COARSE_LOCATION and ACCESS_FINE_LOCATION .
What is onCreate () method?
onCreate is used to start an activity. super is used to call the parent class constructor. setContentView is used to set the xml.
What is the use of setContentView in Android?
SetContentView is used to fill the window with the UI provided from layout file incase of setContentView(R. layout. somae_file). Here layoutfile is inflated to view and added to the Activity context(Window).
What is the use of onStart in Android?
onStart() When the activity enters the Started state, the system invokes this callback. The onStart() call makes the activity visible to the user, as the app prepares for the activity to enter the foreground and become interactive. For example, this method is where the app initializes the code that maintains the UI.
What is the package name of JSON?
All npm packages contain a file, usually in the project root, called package. json – this file holds various metadata relevant to the project. This file is used to give information to npm that allows it to identify the project as well as handle the project’s dependencies.
What is the package name of HTTP client in Android?
Android includes two HTTP clients: HttpURLConnection and Apache HTTP Client. Both support HTTPS, streaming uploads and downloads, configurable timeouts, IPv6 and connection pooling.
What is startActivityForResult in Android?
By the help of android startActivityForResult() method, we can send information from one activity to another and vice-versa. The android startActivityForResult method, requires a result from the second activity (activity to be invoked).