A ClassCastException indicates that you’ve tried to cast an object to a subclass that it’s not an instance of, for example attempting to cast a String to an Integer. Java allows you to cast variables of one type to another, as long as this casting happens between compatible data types. Usually, this means you forgot to declare the Activity in your Manifest. This exception is thrown when a call to startActivity fails because the Activity cannot be found. Click here to enlarge the infographicĪndroid Errors List: 11 common errors and how to fix them 1. You attach your device or launch the Android Virtual Device (AVD) you created especially for this occasion, tell Android Studio to install your APK-and it doesn’t work.ĭon’t panic! Simply work your way down this infographic to find out exactly what’s preventing your app from running, and how you can fix it. After days of toiling away at your latest Android project, you’ve finally reached the point where you’re ready to put all your hard work to the test.
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