CODEWITHSUNDEEP
javaandroidtextview
Harry
Harry

Reputation: 782

Detecting if the Back Button was pressed from previous activity

So, (for example) let's say I have an activity with a method that sets the test of a TextView

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends Activity {

    private TextView tv;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        tv = (TextView) findViewById(R.id.textView1);
        setTextView();
    }
    public void setTextView() {
        String myText = ...//fetches text from web server
        tv.setText(myText);
    }
}

If I go to another activity from this one, and the back button is pressed and I return to this activity, I want to be able to recall my setTextView() method to update the text in the TextView. Is it possible to detect when a person "backs" into the activity? Thanks

Upvotes: 1

Views: 741

Answers (1)

Blackbelt
Blackbelt

Reputation: 157437

In your case calling setTextView from onResume instead of onCreate is enough, since when you press back the current activity is finished and the previous one is resumed.

Upvotes: 2

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