如何设置一个意图，以便我可以将数据发送到第二个活动，然后从那里发送到第三个活动？

Question

I get input from user in first activity and send that to a second activity. From the second activity, using the user input, I fetch data from the db and want to send that data to a third activity. How do I give the intent from the second activity to the third activity?

Answer 1

Presumably you are starting each activity using an Intent in which case you could pass data as an extra.

Intent i = new Intent(FirstActivity.this, SecondActivity.class);
i.putExtra("user_input_key", "user_input");
startActivity(i);

In the second activity onCreate

Bundle extras = getIntent().getExtras();
if (extras != null) {
    String userInput = extras.getString("user_input_key");
    //Once activity starts use this string to get data from DB and put/get extra in the same way
}

You shouldn't be passing the intent between activities. Identify exactly what you want to pass between activities and put that data in the intent as an extra and retrieve that data in the new Activity onCreate.