Associate Android Developer Certification Questions and Answer (Dumps and Practice Questions)
Question : Which of these is the incorrect explanation of the androiddebuggable attribute of the
AndroidManifest.xm
1. If not set, it will be handled as "false".
2. It is necessary to set this to "true" in order to use Eclipse's breakpoint function.
4. When releasing the application, deleting android:debuggable is recommended.
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Explanation:
Question : Which of these is the correct description of file access?
1. Generally, files are handled as dedicated resources per each application.
2. Files created by an application can be directly accessed by any application.
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4. In order to access a file, the open FileStream method is provided in the Context class
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Question : Which of these is the correct method to persist SharedPreferences?
1. XML file
2. SQLite
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4. Java object
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Explanation: Interface for accessing and modifying preference data returned by getSharedPreferences(String, int). For any particular set of preferences, there is a single instance of this class that all clients share. Modifications to the preferences must go through an SharedPreferences.Editor object to ensure the preference values remain in a consistent state and control when they are committed to storage. Objects that are returned from the various get methods must be treated as immutable by the application.
Note: currently this class does not support use across multiple processes. This will be added later
To obtain shared preferences, use the following method In your activity:
SharedPreferences prefs = this.getSharedPreferences(
"com.example.app", Context.MODE_PRIVATE);
To read preferences:
String dateTimeKey = "com.example.app.datetime";
// use a default value using new Date()
long l = prefs.getLong(dateTimeKey, new Date().getTime());
To edit and save preferences
Date dt = getSomeDate();
prefs.edit().putLong(dateTimeKey, dt.getTime()).apply();
The android sdk's sample directory contains an example of retrieving and storing shared preferences. Its located in the:
Related Questions
Question : Which is the correct explanation of ListView?
1. It is necessary to use ListView as a set with ListActivity.
2. You cannot use a ListView when there is no information to be displayed.
3. When displaying a list of Strings using an ArrayAdapter class in ListView, you must save the value in anArrayList.
4. ListView has a function to display a list of uniquely defined Views other than TextView.
Question : Which of following is incorrect about the Toast class?
1. You cannot set a custom layout for a Toast.
2. A Toast can only created by an Activity class
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4. A Toast is displayed for only one of the following periods: Toast.LENGHT_SHORT orToast.LENGTH_LONG
Question : Which does not have a lifecycle?
1. Service
2. MediaPlayer
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4. Activity
Question : Which of these is the correct explanation of SQLite?
1. It is an object database.
2. It is client-server format.
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4. It can be accessed by other applications through ContentProvider
Question : Which is the processing that cannot be executed by using the emulator during development?
1. Displaying information of the heap and threads.
2. Emulation of outgoing calls
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4. Receiving E-mail
Question : Which of these is the correct explanation of the Android license form?
1. It is necessary to register with Android Market and pay a license fee in order to develop a paidfor
application on Android.
2. There is no special provision regarding application license operation on Android.
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not made public.
4. Since Android uses libraries licensed in various ways such as GPL, BSD, and LGPL,
applications developed under Android are subject to the severest license, GPL