To fix this issue you should cancel the background thread when pausing or stopping the Fragment. This results in calling a detached Fragment, throwing such exception. This happens when a time-consuming operation is being done in a background thread, a new Fragment has been created in the meantime and was detached to the Activity before the background thread finished.
The actual error IllegalStateException can occur from a multitude of sources but at the core of it, the reason is mismanagement of Activity states. One of the more common Android crashes that you will likely have encountered if you’ve dealt with fragments. And generally, look to handle any potential null pointers that could cause the error. And simply pull them back out when calling onResume(). And to avoid the error you should aim to save your data when the onPause() method is called in a more permanent place to avoid losing references. Use a stack trace to detect where the error occurred to be sure. This results in some references being lost and when the Android onResume() method is called again it can result in the NullPointException error. The most common cause behind NullPointerException is for data being referenced after going out of scope or being garbage collected.Ī common event in which this occurs is when the app goes to the background, it usually gets rid of some memory. Chances are if you’ve ever developed an Android app then you have run into this error. Top 5 Android Crashes and How to Fix Themĭefinitely the most common Android crash. (Have an iOS app, too? Here’s how to fix the top five iOS crashes.) To help minimize your app crashes and the time it takes to address them, we’ve compiled the most common Android crashes and how to fix them. App instability can quickly lead to failure or at least be very costly. 62% of users uninstall an app if they experience a crash according to a study by DCI. Mobile teams hate dealing with them and users hate experiencing them.
Crashes are a headache for all parties involved.
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