[Solved] app crashing because of ‘Caused by: java.lang.NullPointerException’ error [closed]
Hey you are are getting exception on something like this code your_toggle_button.setChecked(true); The above code is in other class rather than your_toggle_button activity because you can’t touch your activity’s child if the activity is not running, to achieve this you will have to save your value in some variable and send it through intent when … Read more