How to start an Intent by passing some parameters to it?
android, android-intent, constructor
Solution
In order to pass the parameters you create new intent and put a parameter map:
Intent myIntent = new Intent(this, NewActivityClassName.class);
myIntent.putExtra("firstKeyName","FirstKeyValue");
myIntent.putExtra("secondKeyName","SecondKeyValue");
startActivity(myIntent);
In order to get the parameters values inside the started activity, you must call the `get[type]Extra()` on the same intent:
// getIntent() is a method from the started activity
Intent myIntent = getIntent(); // gets the previously created intent
String firstKeyName = myIntent.getStringExtra("firstKeyName"); // will return "FirstKeyValue"
String secondKeyName= myIntent.getStringExtra("secondKeyName"); // will return "SecondKeyValue"
If your parameters are ints you would use `getIntExtra()` instead etc. Now you can use your parameters like you normally would.
Problem
I would like to pass some variables in the constructor of my ListActivity I start activity via this code: ``` startActivity(new Intent (this, viewContacts.class)); ``` I would like to use similar code, but to pass two strings to the constructor. How is possible?