Android - can I pass a parameter when launch other applications from my application?

How to p开发者_开发技巧ass a parameter to an application that I call from my Application?

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You're starting your other activity with an Intent. It should look similar to this code:

Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
startActivity(intent);

Then you can add a line of code to pass parameters (e.g. Strings):

intent.putExtras("key", "value");

Note: you should add this line before starting the activity ;)