24.8 Using Run App
As previously described, the addition or removal of a method requires the complete re-installation and restart of the running app. To experience this, edit the MainActivity.java file and add a new method after the onCreate method as follows:
public void demoMethod() {
}
Clicking on either of the two Apply Changes buttons will result in the request failing. The only way to run the app after such a change is to click on the Run App button.