Name some Exceptions in Android?

by
  • Inflate Exception
  • Surface.OutOfResourceException
  • SurfaceHolder.BadSurfaceTypeException
  • WindowManager.BadTokenException

In Android development, exceptions are typically used to handle errors or unexpected situations that may occur during the execution of a program. Here are some common exceptions that developers may encounter while working with Android:

  1. NullPointerException (NPE):
    • Occurs when trying to access an object or invoke a method on an object that is null.
java
String str = null;
int length = str.length(); // This will throw a NullPointerException
  1. IllegalStateException:
    • Thrown when an operation is performed that is not allowed in the current state of the application.
java
MediaPlayer mediaPlayer = new MediaPlayer();
mediaPlayer.start(); // IllegalStateException if called without proper initialization
  1. IllegalArgumentException:
    • Thrown when a method receives an argument of an illegal type or value.
java
Intent intent = new Intent(this, SomeActivity.class);
intent.putExtra("key", new Object()); // IllegalArgumentException for using an unsupported data type
  1. IndexOutOfBoundsException:
    • Raised when trying to access an array, list, or string with an invalid index.
java
int[] array = {1, 2, 3};
int value = array[5]; // IndexOutOfBoundsException
  1. NetworkOnMainThreadException:
    • Thrown when network operations are performed on the main thread.
java
// This will throw NetworkOnMainThreadException
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  1. SQLiteException:
    • Commonly encountered when working with SQLite databases on Android.
java
// Example of SQLiteException
SQLiteDatabase db = dbHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("SELECT * FROM non_existent_table", null);

It’s important for Android developers to handle these exceptions appropriately to ensure robust and error-free applications. This can be done using try-catch blocks or other error-handling mechanisms.