Android - Activity constructor

Question

I noticed that using the shortcut Alt + Insert and selecting the builders, it tries to create a constructor with each private property (e.g. cManager

Answer 1

All of your initializations should be performed in the onCreate() method of your Activity:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.cManager = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
    this.mTextView = (TextView)this.findViewById(R.id.mProgressText);
}

Overriding the constructor of Activity involves quite a bit of heavy lifting, and is really not a walk in the park. Although you can [of course] have an empty constructor for an Activity, it really is quite superfluous in the context of the Android framework.

Related answers:

1. Why I cannot pass parameters to Android Activity Constructor.

2. Start an Activity with a parameter.