android studio app crashes when changing activity

In the example below, recipeToShow is throwing a 'Type mismatch' error and Android Studio even shows what it was expecting (Int as a parameter instead of Recipe). If you hover over the error in Android Studio with your mouse then it should describe the issue.

In which case, it may be time to turn to the great wide web for help. Maybe removing one error creates another, or perhaps the proposed solution just isn't relevant. Sometimes the suggested resolutions from Android Studio don't quite solve the problem. Sometimes you need to rename the reference and fix a typo (like in this example), other times you may need to import a missing function or perform another task to get your code working. A drop-down menu will then appear with some possible fixes. Simply select the red code then press the alt and enter keys on your keyboard. In addition to finding the error, Android Studio will often offer potential resolutions. In this case, the phrase 'setContntView' is highlighted because of a typo. If you then open the file you will find the offending code highlighted in red. In the example below, it is the MainActivity.kt file that contains the bug. Simply press Project > app and scan the folders for files underlined in red. You must resolve all red warnings before your app will run. If Android Studio spots something that will crash your app then it will often highlight it in red.

1 - Find any red warningsĪndroid Studio is generally pretty good at finding bugs in your code. In this article, we will explore five ways of identifying (and resolving) bugs when developing an Android app. Why is my app crashing? Five ways to spot a bug using Android Studio and the Logcat

4 - Use Logcat messages to check for bugs.

Five ways to spot a bug using Android Studio.

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Android studio app crashes when changing activity