ANR stands for Application Not Responding. It is a dialog box that appears if the application is no longer responding.

ANR stands for “Application Not Responding” in the context of Android. It occurs when the main thread of an Android application is blocked for too long and is unable to respond to user input or system events. When this happens, the Android system may display an ANR dialog to the user, indicating that the application is not responding and giving them the option to wait or close the app.

ANR issues often arise when an application performs long-running tasks on the main thread, such as network operations or database queries, which can lead to unresponsiveness. To prevent ANRs, developers are encouraged to offload time-consuming tasks to background threads or services, leaving the main thread free to handle user interactions promptly.