Podcast
Questions and Answers
What is the primary purpose of the onDestroy() method?
What is the primary purpose of the onDestroy() method?
- To pause the activity
- To resume the activity
- To release all the resources which are not released by the onStop() method (correct)
- To start the activity
What is the name of the class that is used for error logging in Android?
What is the name of the class that is used for error logging in Android?
- Error
- Warning
- Log (correct)
- Debug
In which method is the setContentView() function typically used?
In which method is the setContentView() function typically used?
- onStart()
- onResume()
- onCreate() (correct)
- onPause()
What is the order of the callback methods when an activity is started?
What is the order of the callback methods when an activity is started?
What is the purpose of the onPause() method?
What is the purpose of the onPause() method?
What is the name of the package that contains the Log class?
What is the name of the package that contains the Log class?
What happens to an app when a pop-up dialog box blocks it?
What happens to an app when a pop-up dialog box blocks it?
What is a typical action taken in the onPause() method?
What is a typical action taken in the onPause() method?
What event triggers an app's onResume() method?
What event triggers an app's onResume() method?
What happens to an app when it is no longer visible and in the foreground?
What happens to an app when it is no longer visible and in the foreground?
What is the purpose of the onPause() method?
What is the purpose of the onPause() method?
What is the purpose of using different app layouts for portrait vs landscape screen orientation?
What is the purpose of using different app layouts for portrait vs landscape screen orientation?
Where is the layout file for landscape orientation stored?
Where is the layout file for landscape orientation stored?
What happens to the current activity when the device's configuration changes?
What happens to the current activity when the device's configuration changes?
What is the purpose of the onSaveInstanceState method?
What is the purpose of the onSaveInstanceState method?
What is the system's role in saving an activity's state?
What is the system's role in saving an activity's state?
What is an example of state that needs to be saved when an activity is destroyed?
What is an example of state that needs to be saved when an activity is destroyed?
What is the purpose of creating a LayoutParams object?
What is the purpose of creating a LayoutParams object?
What is the method used to set the text of a Button?
What is the method used to set the text of a Button?
What is the purpose of the setPadding method?
What is the purpose of the setPadding method?
What is the method used to add a view to the LinearLayout?
What is the method used to add a view to the LinearLayout?
What is the value of the width of the EditText set to?
What is the value of the width of the EditText set to?
What is the background color of the TextView?
What is the background color of the TextView?
What happens to the values of variables when the activity is destroyed and recreated during rotation?
What happens to the values of variables when the activity is destroyed and recreated during rotation?
What method is called by the system before onPause(), onStop(), and onDestroy()?
What method is called by the system before onPause(), onStop(), and onDestroy()?
What is the purpose of onSaveInstanceState()?
What is the purpose of onSaveInstanceState()?
When creating a UI programmatically, what is the first step?
When creating a UI programmatically, what is the first step?
What is the benefit of using onSaveInstanceState()?
What is the benefit of using onSaveInstanceState()?
Why is the activity not loaded from the main.xml file when creating a UI programmatically?
Why is the activity not loaded from the main.xml file when creating a UI programmatically?