I am creating an application which requires login. I created the main and the login activity. In the main activity onCreate method I added the following condition: public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); … loadSettings(); if(strSessionString == null) { login(); } … } The onActivityResult method which is executed when the login form terminates … Read more
I have a global variable in JavaScript (actually a window property, but I don’t think it matters) which was already populated by a previous script, but I don’t want another script that will run later to see its value or that it was even defined. I’ve put some_var = undefined and it works for the … Read more
I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope? This is related to sharing variables across source files, but how does that work precisely? Where do I use extern? 18 18 Using extern is only of relevance when … Read more
How can I create or use a global variable in a function? If I create a global variable in one function, how can I use that global variable in another function? Do I need to store the global variable in a local variable of the function which needs its access? 2 23
